What is a solution Class 7?.
In class 7, a solution is typically defined as a type of mixture where one or more substances are evenly dispersed in another substance.
The substance that is being dispersed is called the solute, and the substance that it is being dispersed in is called the solvent. Solutions can be liquids, gases, or even solids, and they can be formed by dissolving a solute in a solvent.
In class 7, students learn about different types of solutions, such as:
Liquid solutions: These are solutions where the solvent is a liquid, such as sugar dissolved in water to make a sweet drink.
Gas solutions: These are solutions where the solvent is a gas, such as air, and the solute is a gas or a solid, such as the dissolved oxygen in the air we breathe.
Solid solutions: These are solutions where the solvent is a solid, such as a metal alloy, and the solute is a metal or a non-metal.
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What is the name of Σ?.
The Greek letter Sigma (Σ) is a mathematical symbol used to represent the sum of a series. It is also used to denote standard deviation and other statistical terms, and is the eighteenth letter of the Greek alphabet.
The symbol is written as a capital letter Σ, and is used to indicate the summation of a set of numbers, with a subscript indicating the range. For example, Σ1-10 would indicate the sum of numbers from one to ten.
Sigma can also be used to represent a group of numbers' standard deviation. To do this, the sigma symbol is written with a subscript indicating the range, and the square root of the variance of the set is calculated.
In summary, the sigma symbol is used to represent the sum of a series, as well as to denote standard deviation and other statistical terms. It is written as the capital letter Σ, and is usually followed by a subscript to indicate the range of the summation or standard deviation.
Complete answer:
What is the name of Σ?
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stefanie has 18 grams of 20% sugar syrup, and john has 30 grams of 25% sugar syrup. how many grams of sugar are in john's syrup?
John syrup contains 11.1 grams of sugar
How to calculate the number of grams in john's syrup?Stefanie has 18 grams of 20% syrup
John has 30 grams of 25%
Therefore the number of grams of sugar in John's syrup can be calculated as follows
18× 20/100 + 30 × 25/100
= 18×0.2 + 30×0.25
= 3.6 + 7.5
= 11.1
Hence there are 11.1 grams of sugar in John's syrup
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Questions 4,5,6, please.
Hope it helps. To know the values of all trigonometric ratios, see the table.
If you have any query, feel free to ask.
What is the base of 2?.
The base of 2 is a binary number. This means it is comprised of only 0's and 1's.
A binary number is a number represented in the base-2 numeral system or binary numeral system, a method of a mathematical term which uses only two symbols: typically "0" (zero) and "1" (one).
A binary number system is one of the types of the number system. In computer applications, where only two symbols or digits represent binary numbers, i.e. 0 (zero) and 1(one). The binary numbers here are represented in the base-2 numeral system. For example, (101)₂ is a binary number. Each digit in this system is stated to be a bit.
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What is the height H of the roof?.
Answer:
Step-by-step explanation:
Per ASCE 7, the Mean Roof Height (h) is defined as the average of the roof eave height and the height to the highest point on the roof surface, except that, for roof angles of less than or equal to 10°, the mean roof height is permitted to be taken as the roof eave height
i hope it helps
What is a product of a fraction?.
The product of fractions is a fraction or an integer.
We know that the fraction is used to represent the portion or part of the whole thing.
The fraction has two parts: numerator and denominator.
The top part of fraction is numerator and the bottom part is denominator.
consider a fraction 1/8.
Here, numerator is 1, denominator is 8
When certain thing is divided into 8 equal parts then each part of is represented by fraction1/8
The multiplication of fractions is defined as the product of a fraction with a fraction or the product of a fraction with an integer or the product of a fraction with the variables.
The steps to multiply two fraction are:
First multiply the numerator with numerator
Then Multiply the denominator with the denominator
And lastly simplify the fractions, if required
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which information is not sufficient to prove that a parallelogram is a square
a. The diagonals are both congruent and perpendicular.
b. The diagonals are perpendicular and one pair of adjacent sides are congruent.
c. The diagonals are congruent and one pair of adjacent sides are congruent.
d. The diagonals are perpendicular and one pair of adjacent sides are perpendicular.
The statement B. "The diagonals are perpendicular and one pair of adjacent sides are congruent." is not sufficient to prove that a parallelogram is a square.
A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length. It has opposite angles equal in measure. The diagonals of a parallelogram bisect each other.
A square is a type of rectangle and a type of parallelogram. It is a four-sided polygon with all sides of equal length and all angles right angles. The opposite sides of a square are parallel and congruent, and opposite angles are congruent as well. The diagonals of a square are congruent and bisect each other. Additionally, the diagonals of a square are also perpendicular to each other.
Note that a rhombus also has congruent adjacent sides and perpendicular diagonals, but it's not a square.
Therefore, if the diagonals are perpendicular and one pair of adjacent sides are congruent, the parallelogram is not necessarily a square.
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Whitney drink 1,500 mL of water each day troy drink 1. 8 L of water each day
Who drink more water?
By how much water?
The person who drink more water is Troy and he drinks 0.3 L more than Whitney
What is unit conversion?It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.
To solve this problem, we have to do the conversion of units with the given information:
Information about the problem:
Whitney = 1500 mLTroy = 1.8 L1 L is equal to 1000 mLBy converting the unit from mL to L, we have:
1500 mL * (1 L / 1000 mL ) = 1.5 L
Comparing the volume of water that Whitney and Troy drink we have:
1.8 L > 1.5 L
Troy > Whitney
Troy drinks more water than Whitney
Calculating how much water Troy drinks more, we get:
Volume difference = Troy - Whitney
Volume difference = 1.8 L - 1.5 L
Volume difference = 0.3 L
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Jamar is ordering a taxi from an online taxi service. The taxi charges $3.50 just for the pickup and then an additional $2 per mile driven. How much Would a taxi ride cost if Jamar is riding for 7 miles? How much would a taxi ride cost that is m miles long?
Answer:
Step-by-step explanation: Hello! (Don't read this if you are taking a test, please!)
You know that the taxi will already charge $3.50. Write that down. You know that Jamar is riding for 7 miles. You know that each mile costs $2. Multiply the cost of a single mile by the amount of miles, 7. Then you will get your answer. I hope I helped you out!
Two step equation that equals 13
Following are the different equations, for which the value of equals 13.
There are numerous mathematical formulae that could all equal 13. The following phrases all equal 13.
9+ 4 = 13
15-2 = 13
1 × 13 = 13
Let's think about some intriguing expressions right now.
x³ - x² + x + 7
The equation will equal 13 if the value of x is 2.
A word puzzle states that Shiya has 10 balls and Riya has 3 more than Tom. How many balls does Ria possess?
Let x represent the quantity of Balls Shiya owns.
Shiya has 10 Balls, thus x is equal to 10, and Ry has x+3 Balls.
As a result, Riya has = x + 3 = 10 + 3 = 13 Balls.
Therefore, Riya has 13 Balls total.
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Determine whether the two expreion are equivalent. 1) 3a 6 5a and 8a 6
2) 5c - 4c c and 3c
3) 8x 8 - 4x - 3 and 16% - 7
The process of multiplying a number or expression by itself a certain number of times, known as its exponent.
1) 3a + 6 = 5a
3a + 6 - 5a = 0
-2a = 0
a = 0
2) 5c - 4c = c
5c - 4c - c = 0
c = 0
3) 8x8 - 4x - 3 = 16% - 7
8x8 - 4x - 3 - 16% + 7 = 0
64x - 3 - 16% = 0
64x - 3 - 16/100 = 0
64x - 0.16 = 0
64x = 0.16
x = 0.0025
Exponents are a way to represent repeated multiplication of a number by itself. To solve an equation with an exponent, we must simplify the expression by breaking down the exponent into its component parts, and then simplify the equation by solving for the variable. We can then solve for the exponent by substituting the value of the variable into the equation. For example, if we had an equation of 3a + 6 = 5a, we would first subtract 5a from both sides to get -2a = 0. We can then substitute that value into the equation to get a = 0. Exponents can be a useful tool to quickly solve equations, but can also be tricky to solve if you don't know the basics of algebra.
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What is the domain of 7?.
The domain of a function is the set of all input values (or independent variables) for which the function is defined, and for which the output values (or dependent variables) are real numbers. In other words, it's the set of all the values that can be plugged into the function without resulting in an error.
The number 7 is not a function, it's a constant value. Therefore, it doesn't have a domain, as it doesn't take any input value. A domain is only applicable for a function, which takes some input and produces an output. It does not make sense to speak of the domain of a constant number.
In contrast, if you have a function like f(x) = 7, the domain of this function would be the set of all real numbers since the function will produce the output of 7 for any real value of x.
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100 POINTS AND BRAINIEST
Laisha rides a bike 8 miles in 40 minutes. Jefford rides a bike 5 miles in 30 minutes.
Who will bike the farthest in 1 hour?
2nd question. How much farther?
Step-by-step explanation:
laisha bike farthest in 1 hour
Which of the following expressions is equivalent to 2 exponent -4
Answer:
Step-by-step explanation:
2^-4=0.0625
we can divide by any number to to make an equivalent expression. (Note it is more easier when it is not a repeating decimal.)
we can do 0.0625/2= 0.03125 with this answer we can make an equivalent expression
1(0.03125+0.03125)=0.0625
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{2^{-4}}[/tex]
[tex]\mathsf{= \dfrac{1}{4 \times 4 \times 4 \times 4}}[/tex]
[tex]\mathsf{= \dfrac{1}{2^4}}[/tex]
[tex]\mathsf{= \dfrac{1}{2 \times 2 \times 2 \times 2}}[/tex]
[tex]\mathsf{= \dfrac{1}{4 \times 4}}[/tex]
[tex]\mathsf{= \dfrac{1}{16}}[/tex]
[tex]\huge\text{Therefore, your answer could possibly be: }[/tex]
[tex]\huge\boxed{\mathsf{\dfrac{1}{16}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
How many solutions does equation x1 x2 x3 11 have where x1 x2 and x3 are non negative integers?.
The number of solutions to an equation x₁ + x₂ + x₃ = 11 are 55
Consider given equation x₁ + x₂ + x₃ = 11,
wherex₁, x₂, and x₃ are non-negative integers.
We can oberve that x₁ is the number of ones before the first zero, x₂ the number of ones between the first and the second zero, x₃ is the number of ones after the second zero.
So, we can say that there is a one to one correspondence between the solutions and reorderings of 11 ones and 2 zeros.
So, the number of solutions to given equation would be,
n = ¹¹C₂
Using combination formula [tex]^nC_r=\frac{n!}{r!\times(n-r)!}[/tex],
¹¹C₂ = 11! / (2! × (11 - 2)!)
¹¹C₂ = 55
So, n = 55
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The complete question is:
How many solutions does equation x₁ + x₂ + x₃ = 11 have where x₁, x₂, and x₃ are non negative integers?.
What is y =- 4 on a graph?.
It is a horizontal line which crosses the y axis at -4
The y-intercept is the point at which the graph crosses the y-axis. The most important step in graphing any function with the formula y = f(x) is finding the intercepts. The x-intercept and the y-intercept are the two possible forms of an intercept for a function. The point on the axis where a function's graph intersects it is known as the intercept.
In this equation, y=-4 which means y-intercept is -4 (i.e., c= -4) and the slope of the line is 0.
Thus, it will be a horizontal line cutting the y-axis at -4
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Shawnece is solving the equation x/7 − 4 = −6. One of her steps is to multiply both sides of the equation by 7. Why?
Multiplying both sides by 7 undoes the division of x by 7 in the original problem
The negative sign in −6 must be changed to positive.
Multiplying both sides by 7 undoes the subtraction in the original problem.
Multiplying both sides by 7 undoes the addition in the original problem.
Multiplying both sides by 7 undoes the division of x by 7 in the original problem. Therefore, option A is the correct answer.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
The given equation is x/7 -4=-6
The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.
Multiplying both sides of equation by 7, we get
x-28=-42
Add both sides of equation by 28, we get
x=-42+28
x=-42
Therefore, option A is the correct answer.
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what number is equivalent to 49 ÷ 9
The value of the equation is A = 5.44
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
A = 49 ÷ 9 be equation (1)
On simplifying the equation , we get
A = 5.44
Therefore , the value of A is 5.44
Hence , the equation is A = 5.44
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Chris is at the deli and is trying to figure out how much total cheese he has bought. He knows that he bought ½ pound of American cheese and two packs of 2/3 pound Mozzarella cheese. How much total cheese did he buy?
Answer: 7/6 or 1 1/6
Step-by-step explanation:
1/2+2/3= 7/6 or 1 1/6
2x2 and 3x2 which is 4/6 (multiply with 2)
1x3 and 2x3 which is 3/6 (multiply with 3)
4/6+3/6= 7/6 or 1 1/6
please answer this it is urgent and due tomorrow morning
Answer: a) 190cm³
b) 76cm³
(refer to the image to see all the steps and workings I did related to these diagrams)
I need the answers, please. It's due today.
Answer the following questions:
1. In a kitchen, the combined number of plates and glasses is 60. If the ratio of the number of plates to glasses is 2 ∶ 3, how many plates should be added so that the ratio of plates to glasses is 1 ∶ 1?
2. Fred has a collection of movie CDs. The ratio of fantasy movies to drama movies is 3 ∶ 2. The ratio of drama movies to comedy movies is 4 ∶ 3. If Fred has 24 fantasy movie CDs in his collection, how many comedy movie CDs does he have?
The number of plates to make the ratio 1 : 1 is 12 and the number of comedy movies is 24
What is RatioA ratio is a way of comparing two or more quantities, typically by expressing them as a fraction. The numerator of the fraction represents one quantity and the denominator represents the other. The ratio can be written in different forms, such as "a to b" or "a:b", which expresses the relationship of a to b.
In this problem, using the ratio 2:3;
Number of glasses and plates = 60
Number of plates = 2 / (2 +3) * 60
number of plates = 2 / 5 * 60
number of plates = 24
Number of glasses = 3 / 5 * 60
Number of glasses = 36
The number of plates to make the ratio 1:1 = 36 - 24 = 12
The number of plates = 12
2.
The ratio of fantasy movie to drama movie = 3 : 2
The ratio of drama to comedy = 4 : 3
The number of fantasy = 24
We will set a ratio between fantasy to drama to comedy = 3 : 2 : 2
The total number of movies ;
24 = 2/ 7 * x
24 * 7 = 2x
2x = 168
x = 168 / 2
x = 84
The number of comedy movie is;
y = 2 / 7 * 84
y = 24
The number of comedy is 24
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determine whether the table repersents a discrete probability distribution
The discrete probability distribution is discussed above.
What is probability?Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.Given is discrete probability distribution.
A probability distribution is the mathematical function that gives the probabilities of occurrence of different possible outcomes for an experiment.A discrete probability distribution is the probability distribution of a random variable that can take on only a countable number of values which means that the probability of any event {E} can be expressed as a (finite or countably infinite) sum.Mathematically, we can write it as : [tex]${\displaystyle P(X\in E)=\sum _{\omega \in A}P(X=\omega )}[/tex].A discrete probability distribution is often represented with Dirac measures, the probability distributions of deterministic random variables. If {E} is any event, then : [tex]${\displaystyle P(X\in E)=\sum _{\omega \in A}p(\omega )\delta _{\omega }(E)}[/tex].Mathematically, we can write the equivalent formula as -[tex]${\displaystyle P(X\in E)=\sum _{\omega \in A}p(\omega )\delta _{\omega }(E)} =[/tex]
[tex]${\displaystyle P(X\in E)=\int _{E}f(x)\,dx=\sum _{\omega \in A}p(\omega )\int _{E}\delta (x-\omega )=\sum _{\omega \in A\cap E}p(\omega )}[/tex]
Therefore, the discrete probability distribution is discussed above.
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Finding the final amount given the original amount and a...
Last year, Deandre opened an investment account with $7600. At the end of the year, the amount in the account had decreased by
21.5%. How much is this decrease in dollars? How much money was in his account at the end of last year?
Answer:
The decrease in dollars is $1634
Deandre has $5966 in his bank account at the end of the year
Step-by-step explanation:
7600 times 0.215 = 1634
7600 - 1634 = 5966
The spinner is spun 300 times. How many times would you expect the arrow to stop on green if the spinner is fair? The table below shows the number of times the arrow stops on each colour. The spinner is spun once more. Estimate the probobility of it landing on purple. If the spinner is spun another 1000 times, about how many times would you expect it to land on blue?
If the spinner is fair, it means that the probability of the arrow stopping on any given color is the same. Given that there are four colors on the spinner (green, blue, purple, and yellow), we can expect the arrow to stop on green 1/4 of the time. So if the spinner is spun 300 times, we would expect the arrow to stop on green 300 times * 1/4 = 75 times.
Given that the spinner has been spun once more, the table now shows that the spinner has been spun 301 times. We can estimate the probability of it landing on purple by using the number of times it has landed on purple divided by the total number of spins.
Purple: 48/301 = 0.159 or 15.9%
If the spinner is spun another 1000 times, we can expect it to land on blue 1000 * 1/4 = 250 times approximately, this is assuming the spinner is fair.
Answer this functions question
Answer:
x=0
Step-by-step explanation:
You want the value of x that cannot be in the domains of either f(x) = 2/x or g(x) = (x+1)/x.
DomainThe domain of a function is the set of input values for which the function is defined.
These functions f(x) and g(x) are "undefined" when x=0, because that would cause division by zero.
x cannot be zero
Students in Mrs. Barnes’s class determined the probability that she will check homework on a randomly chosen day is 0.42. They also determined the probability that she will give a pop quiz when she checks homework is 0.6, and the probability that she will give a pop quiz when she does not check homework is 0.9. The probabilities are displayed in the tree diagram.
A tree diagram. Random day goes to checks homework and does not check homework. The arrow to checks homework is 0.42, and does not check homework is 0.58. Checks homework to pop quiz, 0.60; checks homework to no pop quiz, 0.40. Does not check homework to pop quiz, 0.90; does not check homework to no pop quiz, 0.10.
What is the probability that Mrs. Barnes checks homework if the students take a pop quiz?
0.25
0.33
0.67
0.77
The probability that Mrs. Barnes checks homework if the students take a pop quiz is 0.77, the correct option is D.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.
P(E) = Number of favorable outcomes / total number of outcomes
Given;
Mrs. Barnes’s class determined the probability that she will check homework on a randomly chosen day is 0.42;
They also determined the probability that she will give a pop quiz when she checks homework is 0.6, and the probability that she will give a pop quiz when she does not check homework is 0.9;
Then the probability that Mrs. Barnes does not check homework if the students take a pop quiz;
P= 0.42*0.60 + 0.58*0.90
P = 0.252 + 0.522
P = 0.774
P ≈ 0.77
Therefore, the probability will be 0.77
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For each scatter plot, determine if the relationship shown is linear and positive, linear and negative or nonlinear.
Linear and Positive
Linear and Negative
Nonlinear
For the scatter plots shown;
a) Non linear
b) Linear positive
c) Non linear
d) Linear negative
What is the scatter plot?We know that the scatter plot is used to show the relationship between variables. The variable that is plotted on the vertical axis is the dependent variable while the variable that is plotted on the horizontal is the independent variable.
The points that we have on the scatter plot can help us to be able to know whether or not the relationship between the variables is linear.
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A vector in standard position has its terminal point at (7, –4). what is the magnitude of the vector? startroot 3 endroot 3 startroot 65 endroot 65
Answer:
(c) √65
Step-by-step explanation:
You want to know the magnitude of the vector (7, -4).
Vector magnitudeThe magnitude of a vector is the root of the sum of the squares of its components.
|(7, -4)| = √(7² +(-4)²) = √(49 +16) = √65
The magnitude of the vector is √65.
Answer:
√65
Step-by-step explanation:
Margaret i purchaing a new cell phone. The phone he want to buy cot $275. If he ha a coupon for the phone tore for 15% off and another coupon for $20 off, which hould he ue?
Coupon 1 will provide more discount and hence he will use coupon 1.
Describe percent discount:Percent discount is a way to express a reduction in price as a percentage of the original price. It is commonly used in sales and promotions. For example, a 20% discount on a $100 item would reduce the price to $80.
In order to check which coupon provides more discount to the Margaret we need to check for both coupon value and the coupon whose value is greater that one we will use
coupon 1 is 15 percent of initial cost.
Coupon 1 value = (15/100) * 275
=> $0.15*275
=> $41.25
Coupon 2 value = $20
so Coupon 1 will provide more discount .
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