Answer:
a
Step-by-step explanation:
|x|<a means -a<x<a
or x lies between -3 and 3
A plant is already 51 centimeters tall, and it will grow one centimeter every month. The plant's height,
centimeters), after m months is given by the following function.
H (m)=51+m
What is the plant's height after 36 months?
centimeters
X
Step-by-step explanation:
fufj5655 and I hope that you will be able to help me with the following to help me with the application for the role of the temple and many other people in the forest and a small village known as change in indirect speech to be the oldest
Help please!! Find the equation of the linear function represented by the table below in slope-
intercept form.
Answer:
X
1
2
3
4
y
-1
-3
-5
-7
The slope intercept form is y= 2x+1
What is slope ?
A line's steepness is determined by its slope. In mathematics, slope is determined by "rise over run" (change in y divided by change in x).
An equation is a mathematical statement that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. In the equation 3x + 5 = 14, for instance, the two expressions 3x + 5 and 14 are separated.
Let's take 2 points :
(x1,y1) = ( 1, -1)
(x2,y2) = ( 2, -3)
slope , m = (y2-y1) /(x2-x1)
= (-3-(-1))/(2-1)
= (-3+1)/1
= -2
Slope intercept form:
y-y1=m(x-x1)
y-(-1) = -2 (x-1)
y+1=-2x+2
=> y=2x+2-1
=> y= 2x+1
Thus, the slope intercept form is y= 2x+1
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Larry has some money that he has saved. He starts a new job. The graph shows the total amount of money Larry will have y after working x hours. Find and interpret the rate of change and initial value.
The rate of change is $6 per hour while the initial value is $20
What is an equation?An equation is an expression composed of variables and numbers linked together by mathematical operations.
The slope intercept form of a linear equation is:
y = mx + b
Where m is the slope (rate of change) and b is the y intercept.
Let y represent the total amount of money that Larry would have after working x hours.
From the graph, the y intercept is at (0, 20). Using point (0, 20) and (5, 50):
Slope = (50 - 20)/(5 - 0) = 6
The slope is $6 per hour
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Derive by means of the direct formulas the following functions
So on solving the provided question we can say that - the function is y = (-8x + - 74) and y = -82
what is function?The subject of mathematics includes quantities and their variations, equations and related structures, shapes and their locations, and places where they can be found. The term "function" refers to the relationship between a set of inputs, each of which has an associated output. A connection between inputs and outputs in which each input leads to a single, distinct result is known as a function. Each function is given a domain and a codomain, or scope. Usually, f is used to denote functions (x). input is an x. There are four main types of functions accessible. based on the following factors: on functions, one-to-one functions, many-to-one functions, inside functions, and on functions.
here, we have
y = (-8x + - 74)
and from data we have x = 1
so, y = (-8-74)
y = -82
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Lucy spends 4 hours a week babysitting. Her sister Lily spends 7/8 as much time babysitting. Does Lily babysit for more or less than 4 hours.
Answer: Lily babysits for less than 4 hours.
Step-by-step explanation:
We can start by multiplying 4 hours by 7/8 to find out how many hours Lily spends babysitting.
4 * (7/8) = 7/2 = 3.5 hours
Since 3.5 is less than 4, Lily babysits for less than 4 hours.
Answer: Less than 4. (3 1/2 hours)
Step-by-step explanation:
When you multiply a number by a number smaller than 1, the answer gets smaller.
Lily babysits for 3 1/2 hours because 4 x 7/8 = 3 1/2
Carlos is building a prop for the school play and he needs to calculate the amount of lumbet needed to make it. the prop is shaped like a tower and the radius of the base of the tower is 2.5 feet. if the tower is hollow and has no base, what is the approximate surface area of the tower? round your answer to the nearest tenth.
The approximate surface area of the tower is 156.33 feet².
What is Surface Area?The area of a three dimensional object on it's outer surface is called the surface area of the object.
The given tower is a composite of a cylinder and a cone.
But cylinder does not have the bases and cone also does not have it's base.
Surface area of the curved surface of cylinder = 2π r h
where r is the radius of the base and h is the height of the cylinder.
Given h = 8 feet and r = 2.5 feet
Curved surface area of cylinder = 2π × 2.5 × 8 = 40π feet²
Surface area of the curved surface of the cone = π r √(h² + r²)
where r is the radius of the base of the cone and h is the perpendicular height of the cone.
Given r = 2.5 feet and h = 3 feet
Curved surface area of cone = π × 2.5 [√(2.5² + 3²)]
= 9.76π feet²
Total surface area = 40π + 9.76π
= 156.33 feet²
Hence the total surface area of the tower is approximately 156.33 feet².
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Kendra and Jamal are standing in line. The number line shows their positions in meters with
positive numbers representing positions to the right. Help please
the solution of number line is all the options are correct.
What is number line?A number line is an image of numbers plotted on a straight line, either horizontally or vertically. We can compare numbers and execute simple arithmetic operations on them easily by writing the numbers down on a number line. The starting point of a number line is often regarded as zero (0). These numbers to the left of zero are all negative while the numbers just on right of zero are all positive. As a result, we can argue that on a number line, the value of numbers grows as we approach the right. The numbers on the right are therefore larger than the ones on the left, according to this statement.
Here,
Kendra and Jamal are standing in line. The number line shows their positions in meters with positive numbers representing positions to the right.
The position of Kendra is -6 and Jamal is 0.
Kendra is 6 meters left of Jamal.
Kendra and Jamal are 1-6 meters apart.
Jamal is 6 meters right of Kendra.
Hence, all the options are correct.
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A cruise ship has 2,400 regular passengers. Children makes up 120 of them, 23 are teenagers and the rest are adult passengers. What fractional part of the regular passengers are the adult passengers?
Answer:
[tex] \frac{2257}{2400} [/tex]
Step-by-step explanation:
2400 - (120+23)
=2400 - 143
=2257
Therefore,
2257
2400
Three candy bars and one soda costs $5.63.
At the same price, one candy bar and four sodas
cost $4.81. How much does a candy bar cost?
The cost of a candy bar is equal to $1.61.
How to determine the cost of a candy bar?In order to write an equation that model this situation, we would assign variables to the cost of candy bars and the cost of soda respectively, and then translate the word problem into algebraic equation as follows:
Let the variable x represent the cost of candy bars.Let the variable y represent the cost of soda.Next, we would translate the word problem into an algebraic equation based on the fact that three (3) candy bars and one (1) soda costs $5.63 as follows;
3x + y = 5.63 ...equation 1.
Additionally, one candy bar and four sodas cost $4.81 at the same price;
x + 4y = 4.81 ...equation 2.
x + 4(5.63 - 3x) = 4.81
x + 22.52 - 12x = 4.81
11x = 22.52 - 4.81
x = 17.71/11
x = $1.61
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in the fruit bowl that are 10 times. 5 peachse and 2 mangoes select the correct choice from the drop down
The probability of randomly picking a peach from from the fruit bowl is 29 %
How to find the probability ?To find the probability of picking a peach from the fruit bowl at random, you first need to sum up the number of fruit :
= 10 Limes + 5 peaches + 2 mangoes
= 17 fruit
The probability of picking a peach from the fruit bowl can then be found to be :
= Number of peaches in fruit basket / Number of fruit in the fruit basket
= 5 / 17
= 29 %
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The rest of the question is:
The probability of randomly picking a peach from from the fruit bowl is _________.
29%14%52%32%What’s the diameter of O
The diameter of the circle is 16.66 units.
What is a circle?A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle. Additionally, every angle has rotational symmetry around the center.
Given a circle,
and two segments intersect at a point and form a right angle,
the length of the segment to the point of intersection is 6 units and 8 units as given in the figure,
and a segment pass from the center of the circle,
let the distance from point of intersection to center be x
so radius of circle be 6 + x from figure,
it forms a right triangle as shown in the figure, with hypotenuse 6 + x, base x, and perpendicular 8 units,
using Pythagoras theorem
h² = b² + p²
(6 + x)² = x² + 8²
36 + x² + 12x = x² + 64
12x = 64 - 36
12x = 28
x = 28/12
x = 2.333
radius of circle = 6 + x = 6 + 2.33 = 8.33
diameter of circle = 2r = 2 x 8.33 = 16.66 units
Hence the diameter is 16.66 units.
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If Csc(x)=-2 , what is Cot (x/2)?
Do you know how to do it on a calculator using 1/sin(x) and 1/ tan(x)?
The value of cot(x/2) is -3.73
What are trigonometric ratios?The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).
Given that, Csc(x) = -2
Since,
cscx = 1/sinx
Therefore,
1/sinx = -2
sinx = -1/2
sinx = -sin30°
x = -30°
Therefore,
cot (x/2) = cot(-15)
= -1/tan15
= -3.73
Hence, the value of cot(x/2) is -3.73
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A high speed boat travels from the mainland to an island 170 miles away in 2.34 hours. What is the boat's average speed? If necessary, round to two decimal places
Answer:
Average speed = Total distance travelled / Total time taken
= 170 miles / 2.34 hours
= 72.65 miles per hour or 72.65 mph
Pls mark as brainliest. I rlly need it for some reason. Thanks
it is generally believed that nearsightness affects about 15% of al children. a local elementary school registered 120 incoming kindergarteners.
Note that this scenario is talking about a sampling distribution sincer this school is a sample size 120, therefopre, you will need to calculate the standard deviation using a formula before using the normalcdf aqnd invNorm commands.
(a) what is the mean of the sampling distribution of all samples like this
(b) what is the standard deviation of the sampling distributrion of all samples like this
(c) what is the probability that less tahn 10%of the incoming kindergarteneres are nearsighted?
(d) if this school measutre at the 80th percentile for all incoming kindergarten classes of size 120, what proportion of incoming kindergarteners are nearsighted?
The mean is of 0.15. The standard deviation is of 0.0326.0.1774 of incoming kindergarteners are nearsighted.
Find the mean and S.D ?The central limit theorem and the normal distribution are used to determine that:
a) A 0.15 is the mean.
b) A standard deviation of 0.0326 is present.
c) There is a 0.063 = 6.3% chance that fewer than 10% of the kindergarten applicants have nearsightedness.
d) 0.1774 percent of kindergarten students have nearsightedness.
The mean is of 0.15.
Item b:
s = p (1-p)/n = 0.15(0.85)/120
= 0.0326.
The standard deviation is of 0.0326.
Item c:
The probability is the p-value of Z when X = 0.1.
By the Central Limit Theorem
Z= 0.1 -0.15/ 0.0326.
= -1.53
Z = -1.53 has a p-value of 0.063.
There is a 0.063 = 6.3% probability that less than 10% of the incoming kindergarteners are nearsighted.
Item d:
X = 0. 1774
The proportion is X when Z has a p-value of 0.8, so X when Z = 0.84.
0.1774 of incoming kindergarteners are nearsighted.
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If a1=3 and an=-2an find f 8
Answer:
a₄ = 25
Step-by-step explanation:
using the recursive formula [tex]a_{n}[/tex] = 2[tex]a_{n-1}[/tex] and a₁ = 4 , then
a₂ = 2a₁ - 1 = 2(4) - 1 = 8 - 1 = 7
a₃ = 2a₂ - 1 = 2(7) - 1 = 14 - 1 = 13
a₄ = 2a₃ - 1 = 2(13) - 1 = 26 - 1 = 25
Simplify the expression in the exact terms ( no decimals): (2/3)^3
Answer:
[tex]\frac{8}{27}[/tex]
Step-by-step explanation:
This means
[tex]\frac{2}{3}[/tex] x [tex]\frac{2}{3}[/tex] x [tex]\frac{2}{3}[/tex] = [tex]\frac{8}{27}[/tex]
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{(\dfrac{2}{3})^3}[/tex]
[tex]\mathsf{= \dfrac{2}{3}(\dfrac{2}{3})(\dfrac{2}{3})}}[/tex]
[tex]\mathsf{= \dfrac{2(2)(2)}{3(3)(3)}}[/tex]
[tex]\mathsf{= \dfrac{4(2)}{9(3)}}[/tex]
[tex]\mathsf{= \dfrac{8}{27}}[/tex]
[tex]\huge\text{Therefore, your answer should be: }[/tex]
[tex]\huge\boxed{\mathsf{\dfrac{8}{27}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
2. Regina Aguirre deposits $2,000 into an ordinary annuity after each 6-month period for 4 years. The account
pays 6% interest compounded semiannually. Find the a) future value, and b) total interest earned.
Suppose a parabola has an axis of symmetry at x = 6, a maximum height of 6 and also passes through the point (7, 5). Write the equation of the parabola in vertex form.
Answer:
[tex]y=-(x-6)^2+6[/tex]
Step-by-step explanation:
Vertex Form:Vertex form of a parabola is expressed as: [tex]y=a(x-h)^2+k[/tex]
(h, k) = vertex"a" determines vertical stretch/compression and directionIt's also important to note that the axis of symmetry is a vertical line which passes through vertex, so in this form, that axis of symmetry can be defined as such: [tex]x=h[/tex]
So if we're given the axis of symmetry we know the x-coordinate of the vertex.
Solving the Problem:Since we're given the axis of symmetry to be: [tex]x=6[/tex] then that means the x-coordinate of the axis of symmetry is six. Another important thing to note about the vertex is it's y-value is either a minimum or maximum depending on whether it's opening up or down. So when we're given the maximum height to be 6, that's the y-coordinate of the vertex.
So now we know the coordinates to the vertex: [tex](6, 6)[/tex]. Using this we can plug in some values into the vertex form: [tex]y=a(x-6)^2+6[/tex], but we still don't know the "a" value in front (besides that it's negative). Luckily we're given a point on the equation! We can plug in the coordinates given: [tex](7, 5)[/tex] into the vertex form as (x, y) to solve for the "a" value, so let's do that.
Original Equation:
[tex]y=a(x-6)^2+6[/tex]
Passes through the point (7, 5), so substitute it for (x, y)
[tex]5=a(7-6)^2+6[/tex]
Simplify inside parenthesis:
[tex]5=a(1)^2+6[/tex]
Square the one:
[tex]5=a+6[/tex]
Subtract 6 from both sides:
[tex]-1=a[/tex]
So now let's plug this back into our equation: [tex]y=-1(x-6)^2+6[/tex], although we don't have to explicitly put the one, and just put the negative sign which does the same thing: [tex]y=-(x-6)^2+6[/tex]
House representatives are elected every two years the President of the United States is elected every four years both will be elected in 2004 when is the next year after 2004 for both will be elected
Estimating and Checking
Rashida has worked out that 21.29 x 38 = 809.02.
What calculation could you do to check that this answer is about right?
The required expression is 21.29 × 38 = 809.02. has an exact value of the given product.
What is an estimate?The estimate is a process, and it includes the rough over-calculation that makes one have a close value to the exact value.
here,
Given expression,
21.29 × 38 = (21 + 0.29) 38
Using distributive property,
= 21× 38 + 0.29 × 38
= 798 + 11.02
= 809.02
The required expression is 21.29 x 38 = 809.02. has an exact value of the given product.
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The announcer said, ‘Ingrid won the 100 metre race in 13.9 seconds.’
Her time was originally measured to 2 decimal places.
What was the slowest time she could have run?
Answer:
So the slowest time she could have run is 13.99 seconds, as any time greater than that would have been rounded up to 14 seconds.
Step-by-step explanation:
Ingrid's time of 13.9 seconds was originally measured to 2 decimal places, which means that her actual time could be rounded to 13.9 seconds. To find the slowest time she could have run, we need to find the greatest value that could have been rounded down to 13.9 seconds.
Since the time was measured to 2 decimal places, this means that the hundredths place is known and the thousandths place can be anything between 0 and 9. So the slowest time she could have run is 13.99 seconds, as any time greater than that would have been rounded up to 14 seconds.
The product of 46 and a number added to the reciprocal of a number squared
The required equation modeled as of the given condition is 46x + 1 / x².
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
here,
Let the number be x, and its reciprocal is 1/x
According to the question, the product of 46 and a number added to the reciprocal of a number squared is given as,
= 46 × x + 1/x²
= 46x + 1/x²
Thus, the required equation modeled as of the given condition is 46x + 1 / x².
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Find the place value of the 4 in the the number 16,952,874.
Answer:
one's place
Step-by-step explanation:
0.006375 g = _________ mcg?
Answer:
6375 mcg
Step-by-step explanation:
hopes this helps :)
Expand and simplify
a) x(x + 2)(x + 3)
The required expression is x³ + 5x² + 6x as an expanded form.
What is the algebraic expression?Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.
The expression is given in the question, as follows:
x(x + 2)(x + 3)
We have to expand and simplify the given factors.
As per the question, we have
⇒ x(x + 2)(x + 3)
Open the first parentheses, and distributes
⇒ (x² + 2x)(x + 3)
⇒ x²(x + 3) + + 2x(x + 3)
Combine the likewise terms in the above expression,
⇒ x³ + 3x² +2x² + 6x
⇒ x³ + 5x² + 6x
Thus, the required expression is x³ + 5x² + 6x.
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Becky's dinner would have cost $30 but she had a 40% off coupon. How much did Bedky pay for dinner?
Answer:
If Becky had a 40% off coupon, that means she saved 40/100 = 0.4 of the original price.
To find how much she paid for dinner, we can multiply the original price by the percentage of the price that she paid:
30 * (1- 0.4) =30*0.6 = $18
Becky paid $18 for her dinner.
A recipe requires 3½ cups of nonfat milk. A person already has ¾ cup. How much more is needed?
A. 2¾
B. 2¼
C. 3¼
D. 1¾
Show work please
Answer:
A. 2¾
Step-by-step explanation:
The person needs the difference. This is a subtraction problem.
3 1/2 - 3/4 =
3/4 is just a fraction, but you can think of 3/4 as a mixed numeral by writing 3/4 as 0 3/4. The whole part is 0 and the fractional part is 3/4.
= 3 1/2 - 0 3/4
Now we are subtracting two mixed numerals. You need to subtract the whole part, 0, from the whole part, 3, and the fractional part, 3/4, from the fractional part, 1/2.
For the fractional parts, we need a common denominator of 4.
= 3 2/4 - 0 3/4
Now we have both fractions with a common denominator of 4, but since we cannot subtract 3/4 from 2/4, we borrow 1 from 3 as 4/4.
3 goes down 1 to 2, and the 1 which is borrowed as 4/4 is added to the 2/4 to give you 2 6/4. 2 6/4 has the same value as 3 2/4. Now we have:
= 2 6/4 - 0 3/4
We subtract 0 from 2, and we subtract 3/4 from 6/4.
= 2 3/4
Answer: 2 3/4
Decide whether parallelogram JKLM is a rectangle, a rhombus, or a square. Give all names that apply.
J(-2,7), K(7, 2), L(-2,-3). M-11,2)
rectangle
rhombus
square
Explain your reasoning.
The diagonals are neither perpendicular nor congruent.
The diagonals are perpendicular but not congruent.
The diagonals are congruent, but not perpendicular.
The diagonals are congruent and perpendicular.
Answer:
rhombus
(b) The diagonals are perpendicular but not congruent.
Step-by-step explanation:
You want to know what sort of figure the parallelogram JKLM is, given the vertices J(-2,7), K(7, 2), L(-2,-3), M(-11,2).
ObservationThe x-values of points J and L on diagonal JL are the same, so that diagonal is a vertical line. Its length is 7 -(-3) = 10.
The y-values of points K and M on diagonal KM are the same, so that diagonal is a horizontal line. Its length is 7 -(-11) = 18.
The diagonals are perpendicular and not congruent, so the parallelogram is a rhombus.
You are playing a card game. When you finish the game,
you receive one point for each card you played and lose two points for each card
remaining in your hand. You finish the game before three of your friends finish, so
your score is tripled. What is your final score if you play 18 cards and have 2 cards
left in your hand?
The requried, score is given as 42, as of the given condition,
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
here,
Let the total score after finishing the game be x,
Receive one point for each card you played and lose two points for each card remaining in your hand. and the score is tripled.
According to the quesiton,
x =3 [1 × 18 - 2 × 2]
x = 3[ 18 -4]
x = 3 × 14
x = 42
Thus, The requried, score is given as 42, as of the given question,
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In triangle ABC, the measure of angle B is 21 less than four times the measure of angle A and the measure of angle C is more than five times the measure of angle A. Find the measure, in degrees, of each angle of triangle ABC.
Answer:
Step-by-step explanation: