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2 years ago

Help Plsssss middle school math

Mathematics

2 answers:

Inga [223]2 years ago

7 0

Answer:

Step-by-step explanation:

Add up total amount of votes

4+11+8+7 = 30

270/30 = 90

Set up ratio

11/30 = x/270

cross multiply

30x = 2970

divide both sides by 30 to get x by itself

x = 99

Burka [1]2 years ago

3 0

Answer:

99 votes for ice cream

Step-by-step explanation:

4 + 11 + 8 + 7 = 30

270/30 = 9

to find the predictions multiply the votes by 9

ice cream has 11 votes

11 * 9 = 99

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Select the correct answer.

anygoal [31]

Answer:

B: $c(3c^2-4)$

Step-by-step explanation:

1. Substitute $1$ for c: $(24^6-32^4)/(8^3)$

2. Solve substitution: $-1$

3. Compare $-1$ to calculated answers when $c=1$

4. $c(3c^2-4)$ when $c=1$ is $-1$

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2 years ago

The figure below has a volume of 60 cubic units. How many more cubes will it take to fill the figure?

jolli1 [7]

Answer:

40 cubic units

Step-by-step explanation:

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2 years ago

Y = 5x + 7<br> 2x + y = -5<br> Are the equations parallel,<br> perpendicular, or neither?

Nezavi [6.7K]

Lines are neither perpendicular nor parallel.

Step-by-step explanation:

Step 1:

In equation 1, Y = 5X + 7

In equation 2, Y = -2X -5

Step 2:

Slope Intercept form Y =mX +c

Where m = Slope

Slope of line 1 = 5

Slope of line 2 = -2

m1 is not equal to m2. Hence it is not parallel.

m1 × m2 is not equal to -1. Hence they are not perpendicular.

3 0

3 years ago

If you doubled the radius of a sphere, how would the volume change? A. The volume would double. B. The volume would triple. C. T

Ronch [10]

The volume of a sphere, V = (4/3)(PI)(R^3) Let k = (4/3)(PI) Therefore, V = k (R^3) Let R’ = new radius = 2R V’ =k (R’^3) = k (2R)^3 = 8 k R^3 = 8 V The volume would be eight time the original volume.

7 0

3 years ago

John has $4000 in his savings account.each month he withdraws $70 from his account which is the type of function that models thi

r-ruslan [8.4K]

Answer:

y = 4000 - 70x

Linear function.

Step-by-step explanation:

Let x = number of weeks.

In 1 week, he withdraws $70.

That means -70 in 1 week.

After the second week, he will have withdrawn 2 times $70, or

-70 × 2

After 3 week, he will have withdrawn -70 × 3

After x weeks, he will have withdrawn $70 × x,or simply -70x.

He starts with 4000, so after x weeks, he has 4000 - 7x.

Let y = the amount of money at week x.

The equation is

y = 4000 - 70x

This is a linear function.

6 0

2 years ago