3 years ago

Was it hard to find out?

Mathematics

1 answer:

allochka39001 [22]3 years ago

8 0

Sorry what is hard to find out?

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5/25 convert into a decimal

7nadin3 [17]

Answer:

0.2

Step-by-step explanation:

5/25 as a decimal is 0.2.

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3 years ago

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Jodi and mariah are sisters. jodi is three years older than mariah. using one variable, write an expression to represent the sum

lapo4ka [179]

Mariah =X
Jodi= X+3

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3 years ago

I need help with this page

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For 1 the answer is Junior High B which is letter C

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After being treated with chemotherapy, the radius of the tumor decreased by 23%. What is the corresponding percentage decrease i

Crazy boy [7]

Answer:

The volume of the tumor experimented a decrease of 54.34 percent.

Step-by-step explanation:

Let suppose that tumor has an spherical geometry, whose volume ( $V$ ) is calculated by:

$V = \frac{4\pi}{3}\cdot R^{3}$

Where $R$ is the radius of the tumor.

The percentage decrease in the volume of the tumor ( $\%V$ ) is expressed by:

$\%V = \frac{\Delta V}{V_{o}} \times 100\,\%$

Where:

$\Delta V$ - Absolute decrease in the volume of the tumor.

$V_{o}$ - Initial volume of the tumor.

The absolute decrease in the volume of the tumor is:

$\Delta V = V_{o}-V_{f}$

$\Delta V = \frac{4\pi}{3}\cdot (R_{f}^{3}-R_{o}^{3})$

The percentage decrease is finally simplified:

$\%V = \left[1-\left(\frac{R_{f}}{R_{o}}\right)^{3} \right]\times 100\,\%$

Given that $R_{o} = R$ and $R_{f} = 0.77\cdot R$ , the percentage decrease in the volume of tumor is:

$\%V = \left[1-\left(\frac{0.77\cdot R}{R}\right)^{3} \right]\times 100\,\%$

$\%V = 54.34\,\%$

The volume of the tumor experimented a decrease of 54.34 percent.

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Thirty minutes of exercise per day can reduce your blood pressure. Which of the following is a guideline for establishing causal

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Answer:

opt. (d)

Step-by-step explanation:

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