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2 years ago

HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Mathematics

2 answers:

lutik1710 [3]2 years ago

7 0

Step-by-step explanation:

Step 1: Simplify

$=-\frac{7}{2}z+4+\frac{1}{5}z-15$

Step 2: Factor out common terms

$=z\left(-\frac{7}{2}+\frac{1}{5}\right)+4-1$

Step 3: Simplify

$=-\frac{33}{10}z+4-15$

Step 4: Subtract the numbers 4 - 15 = -11

$=-\frac{33}{10}z-11$

Step 5: Simplify

$=-\frac{33z}{10}-11$

Explanation in words:

- To solve this equation, the first step is to simplify the equation.

- To solve this equation, the second step is to factor out the common terms in this equation

- To solve this equation, the third step is to simplify the equation from step two.

- To solve this equation, the fourth step is to subtract the numbers 4 - 15 = -11

- To solve this equation, the fifth step is to simplify the equation from step four.

Answer:

$=-\frac{33z}{10}-11$

Hope this helps.

miv72 [106K]2 years ago

6 0

Step-by-step explanation:

$(-\frac{7}{2} z +4)+(\frac{1}{5} z -15)\\\\=-\frac{35}{10} z+4+\frac{2}{10}z -15\\\\=-\frac{33}{10}z -11$

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3 years ago

7. The bottom of a circular swimming pool

mote1985 [20]

<h2>Hello!</h2>

The answer is:

1017.88 square feet are blue.

To calculate how many square feet are blue, we need to calculate the area of the bottom of the circular swimming pool.

We need to remember that we can calculate the area of any circle using the following formula:

$Area_{circle}=\pi radius^{2}$

Now, we know that the diameter of the bottom is equal to 36 feet, so, we can calculate the radius of the bottom using the following formula:

$diameter=2radius\\\\radius=\frac{diameter}{2}$

So,

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Then, calculating the area we have:

$Area_{bottom}=\pi radius^{2}=\pi 18ft^{2}=1017.88ft^{2}$

Hence, we have that 1017.88 square feet are blue.

Have a nice day!

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