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3 years ago

How can you use models to evaluate and compare expressions?

1 answer:

3 0

Models can help compare and evaluate expressions visually, and make it easy to see trends, similarities, and differences.

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Three local gyms are having membership specials.

Reil [10]

Answer:

Lowest: Health Styles

Highest: Able

Able is 32.95$ per month

Health Styles is 20$ per month

Crossfit is 24.95 per month

So, Health is the lowest and Able is the highest.

I figured this out by divided the amount by the amount of months. For example, 359.82 divided by 18 is 19.99 which is also the amount per month.

4 0

3 years ago

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Please help will mark brainleist please help

Alecsey [184]

Answer:

Step-by-step explanation:

That would be my guess

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3 years ago

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Write an equation for (2, 1), and y increases by 4 when x increases by 1.

Katen [24]

Answer:

Step-by-step explanation:

The equation for a line can be written in slope-intercept form:

$y = mx + b$

Where $m$ is the slope of the line and $b$ is the y-intercept.

Since we know " $y$ increases by $4$ when $x$ increases by $1$ ", that tells us that the slope of the line is $4$ .

$y = 4x + b$

To figure out the y-intercept, $b$ , we can plug in the coordinates given in the problem to the point that the line passes through, $(2, -1)$

$1 = 4(2) + b$

$1 = 8 + b$

$b = -7$

Therefore, the equation of the line is $y = 4x - 7$

7 0

4 years ago

What is the solution of the system?

Serjik [45]

Answer:

(-13,-4)

Step-by-step explanation:

4x-8y=-20

9x+113=y

Substitute in y for 9x+113

4x-8y=-20

Substitute

4x-8(9x+113)=-20

Simplify

4x-72x-904=-20

Simplify

-68x-904=-20

Additive Prop. of Equality

-68x-904+904=-20+904

Simplify

-68x=884

Isolate the variable(x)

-68x=884

-68x -68x

Simplify

x=-13

Solve for y

9x+113=y

9(-13)+113=y

-117+113=y

-4=y

Check

4x-8y=-20

4(-13)-8(-4)=-20

-52+32=-20

-20=-20

9x+113=y

9(-13)+113=-4

-117+113=-4

-4=-4

8 0

3 years ago

Find the area of a sector with an arc length of 60cm and a radius of 15cm.

olga nikolaevna [1]

Answer: 75 $\pi$ /2 or $117.81$

Step-by-step explanation:

-To find the area of a sector, you need the equation:

$\frac{Arc}{360} \pi r^2$

-Set the measurements onto the equation:

$\frac{60}{360}$ × $\pi (15)^2$

-Then, you solve:

$\frac{60}{360}$ × $\pi (15)^2$

$\frac{1}{6}$ × $\pi (15)^2$

$\frac{1}{6}$ × $225=\frac{75}{2}$

$\pi$ × $\frac{75}{2} = \frac{75\pi }{2}$

-Result:

$\frac{75\pi }{2}$ or $117.81$

7 0

4 years ago