Are they functions or not ?

Answer:

9.3x107 (if I'm wrong I'm stoopid)

Step-by-step explanation:

Answer:

its a unit rate because it compares 3 meals to 1 day (ex. breakfast, lunch, dinner all = 1 day)

Step-by-step explanation:

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Answer:

1080

Step-by-step explanation:

Answer:    

a:    450 + .05c  ≥  600

b:    She needs to make $3,000 in sales to reach her goal.

PLz mark brainliest

Answer:

22 Magnets

Step-by-step explanation:

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

Answer:

28[tex]\sqrt{2}[/tex]

Step-by-step explanation:

The given is a special right triangle with angle measures : 45-45-90

The side lengths in this special triangle is follows as x[tex]\sqrt{2}[/tex]-x[tex]\sqrt{2}[/tex]-x

x represent the side length that sees the angle measure with 90 and it is given as 28 here so x[tex]\sqrt{2}[/tex] or a in this case is equal to

28[tex]\sqrt{2}[/tex]

The average rate of change in f(x) over (1,5) is -6.

Given function is:

[tex]f(x) =17-x^{2}[/tex]

[tex]f(5) = -8\\\\f(1) = 16[/tex]

The average rate of change is a measure of how much the function changed per unit, on average, over that interval.

We know that

The average rate of change in f(x) over (a,b) is given by:

The average rate of change = [tex]\frac{f(b)-f(a)}{b-a}[/tex]

So, The average rate of change in f(x) over (1,5) = [tex]\frac{f(5)-f(1)}{5-1}[/tex]

The average rate of change in f(x) over (1,5) = [tex]\frac{-8-16}{5-1}[/tex]

The average rate of change in f(x) over (1,5) = -6.

Therefore, the average rate of change in f(x) over (1,5) is -6.

To get more about the average rate of change visit:

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Answer:

-6

Step-by-step explanation:

Answer:

Depends on how the teacher wants the answer:

400π (in terms of pi) or 1256.6 (rounded to tenths place)

Step-by-step explanation:

40/2 = 20, the radius of one of the blue circles

Use the formula: πr², but divide it by 2 because it is a semicircle

π20² = 400π = 1256.63706

Let me know if you need help rounding it if the question asks you to.

Answer:

hello

4/14 x  5  /14 = 20/196 = 5 / 49

Step-by-step explanation:

Answer:

it's A. 1/3 because yes it's a

Answer:

15 out of 21 boys brought their lunch to school

Step-by-step explanation:

We need to get the denominator the same!

3/5 x 7 = 21/35

3/7 x 5 = 15/35

15 out of 21 boys brought their lunch to school :)

Please rate and mark brainliest!!

Have an amazing day!!

Answer:

the answer would be 15/21 my friend :) please rate 5 stars and give brainlest.

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

The population is modeled with an exponential equation, and using what we know about exponential equations we will see that:

Here we have the exponential equation:

P(t) = 29,816,591*(1.0128)^t

A) The population in 1990 will be given by P(0), this is:

P(0) = 29,816,591*(1.0128)^0 = 29,816,591

B) For an exponential:

A*(b)^x

We can rewrite it as:

A*(1 + r)^x

In this case, b is the growth factor, so in our function, the growth factor is 1.0128

C) Using the above notation, the percent increase by year is given by 100% times r, so first let's get the value of r.

r = b - 1 = 1.0128 - 1 = 0.0128

Then the percent increase is:  0.0128*100% = 1.28%

D) The year 2007 comes 17 years after 1990, so we need to evaluate the equation in t = 17, we will get:

P(17) =  29,816,591*(1.0128)^17 = 37,013,551.9

If you want to learn more about exponential equations, you can read:

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Answer:

each person will get 3/4 of a brownie

Step-by-step explanation:

If you divide 3 into 4 you get 3/4

[tex]3/4 = \frac{3}{4}[/tex]

Applying the concept of supplementary angles, their measures are of 60º and 120º.

Two angles are called supplementary if the sum of their measures is of 180º.

In this problem, we have that the measurement of one angle is half the measurement of the other, and they are supplementary, hence:

[tex]x + \frac{x}{2} = 180[/tex]

[tex]\frac{3x}{2} = 180[/tex]

3x = 360

x = 120

x/2 = 120/2 = 60º.

The measures of the supplementary angles are of 60º and 120º.

More can be learned about supplementary angles at https://brainly.com/question/12919120

Answer:

3

Step-by-step explanation:

to calculate the mean of a list, you need to add up all the numbers and divide by the number of numbers

[tex]14+8+(-17)+(-8)+18=15[/tex]

[tex]\frac{15}{5}=3[/tex]

Answer:

3

Step-by-step explanation:

The average is the sum of the given numbers divided by the count (how many numbers you have):

                  14 + 8 -17 - 8 + 18            15

average = ---------------------------- = ----------- = 3

                                5                         5

Answer:

in the 13th lap

Step-by-step explanation:

Answer:

- 3000 is the answer

Step-by-step explanation:

just took the test on edu

The slope of the given equation is -3000.

Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the phrase 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.

We are aware that the Havertown newspaper had 80,000 readers in the year 2000 (when x=0) and 50,000 readers in the year 2010 (when x=10). With this knowledge, we can determine the slope of the line that depicts this situation:

slope = (change in y) / (change in x) = (50,000 - 80,000) / (10 - 0) = -3,000

So the slope of the line is -3,000.

We also have a point on the line: (10, 50,000). Using the point-slope form of the equation of a line, we can write:

y - 50,000 = -3,000(x - 10)

Now we just need to find the value that goes in the blank to complete the equation.

Because the line's slope is -3,000, y reduces by 3,000 for every unit increase in x.

We can see that a one-unit increase in x corresponds to a one-year increase in the time since x indicates the number of years from the year 2000. As a result, we might conclude that 3,000 fewer copies of the newspaper were distributed annually.

The point-slope equation is complete when:

y - 50,000 = -3,000(x - 10)

So the answer is -3,000.

Learn more about algebraic Expression here:

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Answer:

Step-by-step explanation:

Triangle

Area = ½ × b × h

b = base

h = vertical height

Square

Area = a2

a = length of side

Rectangle

Area = w × h

w = width

h = height

Parallelogram

Area = b × h

b = base

h = vertical height

Trapezoid (US)

Trapezium (UK)

Area = ½(a+b) × h

h = vertical height

Circle

Area = π × r2

Circumference = 2 × π × r

r = radius

Ellipse

Area = πab

Sector

Area = ½ × r2 × θ

r = radius

θ = angle in radians

Answer:

Lia traveled faster because her distance surpassed Sydney's distance after the first hour.

Step-by-step explanation:

Answer:

0 (i think??)

Step-by-step explanation:

use the equation to find the slope:

y2 - y1/ x2 - x1 or y1 - y2/x1 - x2

sooo

(3, -5) (6, -5)

-5 - (-5) / 3 - 6

-5 + 5/ -3

0

Answer:

3

Step-by-step explanation:

The y-values of both points is -5.  This means that the line between the points is a horiztonal line.  Therefore the distance between the points is simply the difference between the x-values:  6 - 3 = 3

Answer:

Combined Weight Change = -35 lb / 4 total people = Avg weight change per person of -8.75 lb.

Step-by-step explanation:

Answer:

you would end up at (-4,-1)

Step-by-step explanation:

Answer:

33.22

you multply 35.72 by 7%                                          

The expression which is equivalent to the provided expression of variable x is,

[tex]\dfrac{1}{1000x^3}[/tex]

Equivalent expressions are the expression whose result is equal to the original expression, but the way of representation is different.

The given expression in the problem is,

[tex](10x)-3[/tex]

Let the equivalent expression of this expression is f(x). Thus,

[tex]f(x)=(10x)^{-3}[/tex]

The number, with negative power, can be written in the fraction of 1 with the same but positive power or exponent. Therefore,

[tex]f(x)=\dfrac{1}{(10x)^{3}}[/tex]

Solve it further as,

[tex]f(x)=\dfrac{1}{(10)^3(x)^{3}}\\f(x)=\dfrac{1}{1000x^3}[/tex]

Hence, the expression which is equivalent to the provided expression of variable x is,

[tex]\dfrac{1}{1000x^3}[/tex]

Learn more about the equivalent expression here;

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Answer:  C

Step-by-step explanation:

Answer:

34.93

Step-by-step explanation:

find area of semicircle=(pi×radius squared)/2=27.7

find area of rectangle=base×height=47.04

74.74=total area

if one box covers 12 how many boxes cover 74.74=6.2283 but you cannot buy .2283 of fertiliser so you round up to 7 boxes

so total cost becomes 7×4.99=34.93

Answer:

Step-by-step explanation:

Did u find the answer?

The reflected over the line y=x+2 is A''(-3,-2). Each point of the original figure (the pre-image) has an image that is the same distance from the reflection line as the original point, but is on the other side of the line.

Each point of the original figure (the pre-image) has an image that is the same distance from the reflection line as the original point, but is on the other side of the line. This transformation is known as a reflection over line.

A transformational process turns a figure into a reflection. Figures can be reflected in a point, a line, or a plane. When reflecting a figure in a line or a point, the image and preimage coincide. A reflection converts each point of a figure from a point to an image across a fixed line.

From the additional image, you can see that the coordinates of image point A' are after reflection point A about the line y=-x (-3,2).

Next, the coordinates of reflection point A' about the x-axis are (-3,-2).

The complete question is : Find the image of A (-2,3) reflected in the line y= -x and then in the x axis

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Work Shown:

1 metric ton = 1.1023 US tons

7*(1 metric ton) = 7*(1.1023 US tons)

7 metric tons = 7.7161 US tons