Answer:
Step-by-step
Ask your child to practise division by sharing objects equally. For example, 8 ÷ 2 could be solved by sharing 8 objects into 2 equal groups. Using objects such as your child's toys, items of food, or buttons helps them visualise what the calculation means and keeps them interested.Step-by-step explanation:
If 6/7=A/49, then the value of a is
Answer:
A = 42
Step-by-step explanation:
If 6 / 7 = A / 49, then:
(multiply both sides of the equation by 49)
A = 49 * 6 / 7
A = 42
You can also solve by the rule of proportions (see picture):
7 * A = 6 * 49
A = 6 * 49 / 7
A = 6 * 7 = 42
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How do you do the square root of 48 over the square root of 42 this is Algebra 1?
Answer:
Step-by-step explanation:
Simplify the following:
(sqrt(48))/(sqrt(42))
Rationalize the denominator. (sqrt(48))/(sqrt(42)) = (sqrt(48))/(sqrt(42))×(42^(1 - 1/2))/(42^(1 - 1/2)) = (sqrt(48)×42^(1 - 1/2))/42:
(sqrt(48)×42^(1 - 1/2))/42
Combine powers. (sqrt(48)×42^(1 - 1/2))/42 = sqrt(48)×42^((1 - 1/2) - 1):
sqrt(48)×42^((1 - 1/2) - 1)
Put 1 - 1/2 over the common denominator 2. 1 - 1/2 = 2/2 - 1/2:
sqrt(48)×42^((2/2 - 1/2) - 1)
2/2 - 1/2 = (2 - 1)/2:
sqrt(48)×42^(((2 - 1)/2) - 1)
2 - 1 = 1:
sqrt(48)×42^(1/2 - 1)
Put 1/2 - 1 over the common denominator 2. 1/2 - 1 = 1/2 - 2/2:
sqrt(48)×42^(1/2 - 2/2)
1/2 - 2/2 = (1 - 2)/2:
sqrt(48)×42^((1 - 2)/2)
1 - 2 = -1:
sqrt(48)×42^((-1)/2)
sqrt(48) = sqrt(2^4×3) = 2^2 sqrt(3):
2^2 sqrt(3) 1/sqrt(42)
2^2 = 4:
4 sqrt(3) 1/sqrt(42)
Rationalize the denominator. (4 sqrt(3))/(sqrt(42)) = (4 sqrt(3))/(sqrt(42))×(sqrt(42))/(sqrt(42)) = (4 sqrt(3) sqrt(42))/42:
(4 sqrt(3) sqrt(42))/42
The gcd of 4 and 42 is 2, so (4 sqrt(3) sqrt(42))/42 = ((2×2) sqrt(3) sqrt(42))/(2×21) = 2/2×(2 sqrt(3) sqrt(42))/21 = (2 sqrt(3) sqrt(42))/21:
(2 sqrt(3) sqrt(42))/21
sqrt(3) sqrt(42) = sqrt(3×42):
2/21 sqrt(3×42)
3×42 = 126:
(2 sqrt(126))/21
sqrt(126) = sqrt(3^2×14) = 3 sqrt(14):
2/21 3 sqrt(14)
3/21 = 3/(3×7) = 1/7:
Answer: (2 sqrt(14))/7
14/35 Marks
Which one of these grids is shaded red and blue in the ratio 1: 2?
B
C
E
F
Four red cells and eight blue cells make up the body. Then, C is the right answer.
What are proportion and ratio?A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional. A ratio that connects a part to a whole is a percentage. For instance, there are 100 students in the class with 20 men and 80 women. The percentage of men is 20/100, or 20%. 80 out of 100, or 80%, are women.
There are 12 square boxes in the grids.
Let R stand for red and B for blue.
R + B = 12 ...1
R / B = 1/2 ...2
We have by resolving equations 1 and 2
R + 2R = 12
3R = 12
R = 4
Then
4 + B = 12
B = 8
Then, C is the right answer.
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Complete Question -
Point M is online to LN given LN equals 10 and LM equals 8 determine the length of mn
Answer:
2 ...
Step-by-step explanation:
since LM = 8
and LN = 10
therefore MN = LN - LM .
MN = 10 - 8 .
MN = 2
MARK ME AS BRAINLIEST ...Write the equation of a square root function that has been reflected across the y-axis, stretched vertically by a factor of 2, and shifted up 4 units.
A. y= 2[tex]\sqrt{-x}-4[/tex]
B. y= 2[tex]\sqrt{-x}+4[/tex]
C. y= -2[tex]\sqrt{x}-4[/tex]
D. y= [tex]\sqrt{2x}+4[/tex]
Step-by-step explanation:
DISCUSSION QUESTIONS (DQ's).
1. Is division always a negative in a religious faith? Why or why not?
The price of a new car is $29990. If the sales tax rate is 6.5%, then how much sales tax is being charged? What is the total cost of the car including tax?
Answer:
Step-by-step explanation:
Hello! You know that the price of a new car is $29,990 and the sales tax rate is 6.5%. To calculate the tax you will have to pay, you have to multiply 0.065 by 29,990. You have to move the decimal space two spaces to the left to get rid of the percentage. 29,990 x 0.065 = 1949.35. The sales tax being charged for the car is $1949.35. The total cost of the car including tax is $29,990 + $1949.35, which equals $31939.35. Hope this helps!
pleaz pleaz help i'll give 100 points pleazz help
Answer:
D. y = 5x
Step-by-step explanation:
This graph shows a linear relationship between the number of sandwiches bought (x) and their cost (y). In this question, we are asked to define the relationship between x and y using an equation. Since this relationship is linear and thus has a constant of proportionality, we can represent it in the form: y = mx, where m is the ratio of the cost of sandwiches to the number of sandwiches. We can solve for m with the formula:
m = rise / run
So, the value m of the given line is:
m = 10 / 2
m = 5
Hence, the equation that displays the proportional relationship between the number of sandwiches bought (x) and their cost (y) is D. y = 5x.
What are the solution's to the quadratic equation 9x2 4 group of answer choices?.
The exact solutions of an quadratic equation, 9x² - 4 is equals to the values of x, i.e., x = 2/3, - 2/3.
In algebra, a quadratic equation is any equation that can be written in standard form as ax² + bx + c = 0, where x represents an unknown variable, and a, b, and c are known constants, where a ≠ 0. The solutions of a quadratic equation represent x values, where values stratified the equation . Quadratic formula is used to find the solution of standard equation and it can be written as, x = (- b ±√b² - 4ac)/2a .
We have, an quadratic equation,9x²- 4=0
Comparing it with standard equation ax² + bx + c = 0, we get, a = 9 , b = 0 , c = - 4
Using the quadratic formula to determine the solution of it , x = (- b ±√b² - 4ac)/2a
=> x = { -0 ±√0 - 4×9×(-4)}/2×9
=> x = ±(√144/18)
=> x = ± 12/18 = ± 2/3
Hence, the required solution are x = ± 2/3.
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Mr. Blair and Ms. Stevenson are teaching their classes how to write in cursive. Mr. Blair has already taught his class 4 letters. The students in Ms. Stevenson's class, who started the unit later, currently know how to write 2 letters. Mr. Blair plans to teach his class 1 new letter per week, and Ms. Stevenson intends to cover 2. new letters per week. Eventually, the students in both classes will know how to write the same number of letters. How long will that take?
Answer:
2 weeks
Step-by-step explanation:
The next week Mr Blair’s class will have written 5 letters because his class wrote one more letter, while Ms Stevenson’s class will have written 4 letters because her class wrote 2 more letters. This next week Mr Blair’s class will write another letter leaving them at 6 letters, and Ms Stevenson’s class will write 2 more letters leaving them at 6 letters also. So all in all, in 2 weeks, the two classes will be at equal amounts and caught up to each other.
2
1 point
A motorcyclist is travelling at a constant speed of 40 miles an hour. How far will he travel in two and a half hours?
Type your answer...
I
OI
Answer: 183sr3, 370sr3
Step-by-step explanation:
Gentiana i going to the movie to ee Wakanda Forever. Her mom gave her $40 to pend. Gentiana ue $10 for her entrance fee, 25% on a luhie, 20 % on popcorn and the remaining on a pizza pie. How much money did the pizza pie cot?
The pizza pie cost $16.50.
We have the following information. An equation is a mathematical statement that asserts the equality of two expressions. It is written in the form of "left-hand side = right-hand side," where both sides are expressions that are made up of numbers, variables, and mathematical operations.
Gentiana spent $10 on her entrance fee, so she has $40 - $10 = $30 left.
25% of $30 is $30 x 0.25 = $7.50.
She spent $7.50 on a Movie.
20% of $30 is $30 x 0.20 = $6.
She spent $6 on popcorn.
So, the total amount spent on Movie and popcorn is $7.50 + $6 = $13.50.
Therefore, the pizza pie cost $30 - $13.50 = $16.50
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25% of $30 is $30 x 0.25 = $7.50.
She spent $7.50 on a Movie.
20% of $30 is $30 x 0.20 = $6.
She spent $6 on popcorn.
So, the total amount spent on Movie and popcorn is $7.50 + $6 = $13.50.
Therefore, the pizza pie cost $30 - $13.50 = $16.50
How many formulas are there in arithmetic progression class 10?.
There are major two formulas in arithmetic progression which is related to the nth term of A.P.
The difference between any two consecutive integers in an arithmetic progression (AP) sequence of numbers is always the same amount. It also goes by the name Arithmetic Sequence. For instance, the natural number sequence 1, 2, 3, 4, 5, 6,... is an example of an arithmetic progression. It has a common difference of 1 between two succeeding terms (let's say 1 and 2). (2 -1). We can see that the common difference between two subsequent words will be equal to 2 in both the case of odd and even numbers.
Definition 1: An acronym for a mathematical sequence where the difference between any two consecutive terms is always a constant.
Definition 2: An arithmetic sequence or progression is a series of numbers in which the second number in each pair of consecutive terms is obtained by adding a predetermined number to the first.
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Solve for x in this figure.
Enter your answer in the box.
Previous
Answer:
x = 111°
Step-by-step explanation:
Sum of interior angle
(n - 2) 180°
=(7 - 2) 180
=(5) 180°
=900°.
The value of x
=139° + 141° + 120° + x + 136° + 118° + 135° = 900°
=400° + x + 389° = 900°
=789° + x = 900°
x = 900° - 789°
x = 111°.
Select the correct answer.
What is this expression in simplest form?
see picture
Answer:
1.
-x² + 2x
Step-by-step explanation:
x² + x - 2.
=x³ - x² + 2x - 2.
1
=-x² + 2x.
note: x³ cancel x² and x, and -2 cancel -2.
The source or origin of a word is called its
Answer:
Etymology
Step-by-step explanation:
Do a majority of the seniors prefer the prom at the high school ar at a hall? Decide if this is census or sample. Justify your answer.
A)Sample. There are too many seniors at a high school.
B)Census. There are too many seniors at a high school.
C)Sample. It's pretty easy to survey all the students at a high school.
D)Census. It's pretty easy to survey all the students at a high school.
The true statement is D)Census. It's pretty easy to survey all the students at a high school.
What are Census and Sampling:Census:All units or participants in the target population under the survey are statistically compiled as part of the census method's process.
Population in this context refers to the total collection of observations associated with a specific study.
For instance, if university students are asked for input on the teaching staff, the latter group will be considered the study's population.
SamplingThe targeted population is used to choose the various sample entities. With this approach, a predetermined number of observations that come from a bigger pool of populations are statistically analyzed.
Different types of sample methodology can be used, including basic random sampling, systematic sampling, cluster sampling, stratified sampling, and more.
By the above observations, we can conclude that This given situation is a Census as we can survey it among a collection of people that is the batch of senior students and it is easy to survey as there will be a few members of seniors in a school.
Therefore,
The true statement is D)Census. It's pretty easy to survey all the students at a high school.
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2h²g∧4h∧5g-7hg²h∧6g³-4g²h³h∧4g³
simplify
every variable/coefficient is one individual thing
also ^means raised to the power of
The simplified exponential expression for this problem is given as follows:
-9h^7g^5.
How to simplify the exponential expression?The exponential expression for this problem is defined as follows:
2h²g^4h^5g - 7hg²h^6g³ - 4g²h³h^4g³.
When two terms with the same base and different exponents are multiplied, the bases are kept while the exponents are added.
Hence the terms are simplified as follows:
2h²g^4h^5g = 2h^(2 + 5)g^(4 + 1) = 2h^7g^5.7hg²h^6g³ = 7h^(1 + 6)g^(2 + 3) = 7h^7g^5.4g²h³h^4g³ = 4h^(3 + 4)g^(2 + 3) = 4h^7g^5.Hence the simplified expression is given as follows:
2h^7g^5 - 7h^7g^5 - 4h^7g^5.
(2 - 7 - 4)h^7g^5.
-9h^7g^5.
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How to proof quadrilaterals? in geometry
Different quadrilaterals have different properties to get proven.
what are quadrilaterals?
A quadrilateral is a polygon with four sides, four vertices, and four angles.
It is formed by joining four non-collinear points. The sum of the interior angles of quadrilaterals is always equal to 360 degrees. The word quadrilateral is derived from the Latin words ‘Quadra’ which means four and ‘Latus’ means ‘sides’. Not all the four sides of a quadrilateral need to be equal in length. Hence, we can have different types of quadrilaterals based on sides and angles.
Now,
Five special quadrilaterals are shown below in the image, along with their definitions and pictures, and points for them to get proven.
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NEED HELP ASAP PLEASE ANSWER SOON
The area of the right triangle is equal to 1.5√187 square meters.
How to determine the area of a right triangle
Right triangles are triangles with a right angle, whose side relationship is described by Pythagorean relationship:
r = √(x² + y²)
Where:
x, y - Legsr - HypotenuseAnd the area of the triangle (A), in square meters, is determined by the following formula:
A = 0.5 · x · y
First, determine the length of the missing leg by Pythagorean theorem:
x = √(14² - 3²)
x = √187
Second, calculate the area of the triangle:
A = 0.5 · (3 m) · (√187 m)
A = 1.5√187 m²
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Which function could represent the value of
an antique vase that decreases over time?
A- y = −x + 5 B- y = −x − 8
C- y = x − 3 D- y = x + 2
Answer:
A
Step-by-step explanation:
What is the multiplicative inverse of − 6?.
The multiplicative inverse of 'a' is stipulate by a-1 or 1/a. on other side, the multiplicative inverse of a number is expounded as 1 divided by the number.
The multiplication inverse of 6 is 1/6.
hence, the multiplicative inverse of -6 is -1/6.
The multiplicative inverse is defined as the reciprocal of a given number. It is used to define mathematical expressions.
The word 'inverse' concludes something opposite/contrary in effect, order, position. or direction. A number when multiplied by its multiplicative inverse results in 1.
The multiplicative inverse formula is called that the multiply of a number and its reciprocal is 1.
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expression to Factor (with process) x²-36
[tex] \bold{(x-6)(x+6)}[/tex]
Step by step explanation:To simplify this equation, quadratic factoring patterns should be used. These patterns are the following:
[tex] \bold{a^2-b^2=(a-b)(a+b)}[/tex]
This pattern works because if one distributes the terms in the parentheses by multiplying each term in one of the parentheses by each term in the other, the result is the original equation:
[tex]\bold{36=6^2}[/tex] so it can be applied to the given equation:
[tex]\begin{gathered} \bold{x^2-36}\end{gathered}[/tex]
[tex]\bold{(x-6)(x+6)}[/tex]
∴ The factored form of the expression is (x - 6) (x + 6).
What is the rule for ordered pairs?.
An ordered pair contains one point's coordinates. The name of a point in an ordered pair is (x, y).
The first number stands for the x-coordinate, and the second for the y-coordinate. To graph a point, a dot must be placed at the ordered pair's coordinates. The name of a point in an ordered pair is (x, y). The first number stands for the x-coordinate, and the second for the y-coordinate. To graph a point, a dot must be placed at the ordered pair's coordinates.
A set of ordered pairs is any pair of components that are wrapped in brackets and exist in a specific sequence. If there are two components, "a" and "b," the two distinct pairings are "(a, b)" (b, a). A and B are referred to as the first and second elements, respectively, in an ordered pair (a, b). The relationship between the input or domain and the output or range is described by the function rule. If and only if there is only one value in the range for each domain value, a relation is a function.
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K As a town gets smaller, the population of its high school decreases by 4% each year. The senior class has 250 students now. In how m students? Write an equation. Then solve the equation. Write an equation to represent this situation. Let n be the number of years before the class will have 100 students. 0 (Type an equation using n as the variable. Use integers or decimals for any numbers in the equation.) Solve the equation. In n = years the senior class will have about 100 students. (Type an integer or decimal rounded to the nearest hundredth as needed.)
Answer:
y = 250(0.96^n)
Step-by-step explanation:
You want an equation for the number of students in the senior class after n years, when it has 250 students now and decreases at 4% per year. You also want to know the number of years until the class is 100 students.
Exponential equationThe exponential equation will have the form ...
y = a·b^x
where 'a' is the initial value, 'b' is the growth factor, and x is the independent variable.
ApplicationYou have an initial value of 250, a growth factor of (1+(-4%)) = 0.96, and an independent variable of 'n', representing the number of years the population has been declining. The equation is ...
y = 250(0.96^n)
100 studentsThe population will reach 100 students when n has the value that satisfies ...
100 = 250·0.96^n
0.4 = 0.96^n . . . . . . . . . divide by 250
log(0.4) = n·log(0.96) . . . . . take logarithms
n = log(0.4)/log(0.96) ≈ 22.45
The senior class will have about 100 students in 22.45 years.
__
Additional comment
The growth factor used in these exponential equations is (1 + growth rate), where the growth rate is the fractional change in the period of interest. The independent variable (x or n) is the number of such periods. Here, the fractional change is given as -4%, a 4% per year decrease. This tells us a period is 1 year. Of course -4% is the decimal fraction -0.04.
How to calculate std deviation in R?.
To calculate std deviation in R you can create a list of values or import a CSV file to find the standard deviation.
It is simple to compute an average and standard deviation in R. The mean() and sd() functions compute the average and standard deviation, respectively.
The positive square root of the variance is the standard deviation. One of the fundamental techniques used in statistical analysis is standard deviation. Standard deviation, also known as SD or indicated by the symbol "," indicates how far a value deviates from the mean value.
A low standard deviation indicates that the values are often within a few standard deviations of the mean, whereas a large standard deviation indicates that the values are much outside of the mean. Learn how to determine a random variable's standard deviation as well as the standard deviation of data that has been grouped and ungrouped.
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Can you find the HCF of 7 and 9 without using prime factorization method justify your answer?.
Yes, it is possible to find the HCF (highest common factor) of 7 and 9 without using the prime factorization method.
One way to find the HCF of two numbers without using prime factorization is to use the Euclidean algorithm.
The Euclidean algorithm for finding the HCF of two numbers is as follows:
Divide the larger number by the smaller number and get the remainder.
Divide the smaller number by the remainder obtained in step 1 and get the remainder.
Repeat step 2 until the remainder is 0.
The last non-zero remainder obtained is the HCF of the two numbers.
Using the Euclidean algorithm for 7 and 9:
9/7 = 1 remainder 2
7/2 = 3 remainder 1
2/1 = 2 remainder 0
So the last non-zero remainder obtained is 1.
Therefore, the HCF of 7 and 9 is 1.
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5. Expresss 12,600 as a product of it's prime factors.
Answer:
Below in bold.
Step-by-step explanation:
To do this we keep dividing by successive primes, using the lowest prime that divides exactly.
2) 12600
2) 6300
2) 3150
3) 1575
3) 525
5) 175
5) 35
7 <---we end up with a prime number so tha's the end of the process
So, 12,600 = 2*2*2*3*3*5*5*7 or 2^3*3^2*5^2*7.
In the diagram below of triangle MNOP, P is the midpoint of MO and Q is the midpoint of NO. If PQ=5x+62 and MN=6x-4, what is the measure of PQ
The measure of length PQ will be 22 units.
What is the mid-point theorem?A triangle's third side is stated to be parallel to the line segment uniting its two midpoints, and it is also half as long as the third side.
Given:
PQ = 5x + 62, and MN = 6x-4
Now, using Mid- Point Theorem
PQ= 1/2 MN
-5x+ 62 = 1/2( 6x - 4)
-5x+ 62 = 3x - 2
-5x- 3x = -2 - 62
-8x = -64
x= 8
PQ= 5x+ 62 = -5(8) + 62 = -40 + 62 = 22
Hence, the measure of PQ is 22 units.
The missing image is attached below.
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How do you find product of mixed number and a fraction?.
1: Convert the mixed number into an improper fraction.
2: Rewrite the whole number as a fraction with the denominator 1.
3: Multiply two fractions by multiplying the numerators and denominators separately.
4: Convert it into simplified form if required.
Now, According to the question:
A mixed number is a whole number and a proper fraction represented together. It generally represents a number between any two whole numbers.
To multiply a mixed number with a fraction, first, convert the mixed number to a fraction and then multiply the two fractions. Two fractions can be multiplied by multiplying the numerators and denominators separately to get a fraction as an answer. The fraction can be written in its simplest form by removing any common factors between the numerator and denominator.
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The base of an isosceles triangle is equal to 1/3 of the lateral side. The height of the base together with the height is 9.2 cm. Calculate the perimeter of the triangle
The perimeter of the isosceles triangle is 128.8/(√35 +2) cm.
What is an isosceles triangle?
A triangle with two equal sides is said to be isosceles. Also equal are the two angles that face the two equal sides. In other terms, an isosceles triangle is a triangle with two sides that are the same length.
We are given that the base of an isosceles triangle is equal to 1/3 of the lateral side.
Also, the height of the base together with the height is 9.2 cm.
Let the lateral side be 'x' and the height be 'h'
So, the base is x/3
Since the height of the triangle, divides it into two right angled triangles, therefore,
x^2= h^2 + (x/6)^2
⇒h^2 = x^2 - (x/6)^2
⇒h^2 = √[x^2 - (x/6)^2]
We are given h+b=9.2 cm
So,
⇒√[x^2 - (x/6)^2] + x/3 = 9.2
⇒x√35/6 + x/3 = 9.2
⇒(x√35 +2x)/6 = 9.2
⇒x√35 +2x = 55.2
⇒x(√35 +2) = 55.2
⇒x = 55.2/(√35 +2)
So, the base is 1/3*55.2/(√35 +2) = 18.4/(√35 +2)
Perimeter = 2*55.2/(√35 +2) + 18.4/(√35 +2)
= (110.4 + 18.4)/(√35 +2)
= 128.8/(√35 +2) cm
Hence, the perimeter of the isosceles triangle is 128.8/(√35 +2) cm.
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