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2 years ago

What is x if: 9+10=x A. x=109 B. x=91 C. x=21 D. x=19

Mathematics

2 answers:

lesya [120]2 years ago

7 0

Add 9+10 and you get 19. so, x=19

Vanyuwa [196]2 years ago

4 0

This problem is very simple. All you have to do is add 10 and 9. The correct answer is D.

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Alinara [238K]

Answer:

The x-intercepts are 0, 1, 2, 2.2

Step-by-step explanation:

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2 years ago

Find S11 for 1 + 2 + 4 + 8 + …

NemiM [27]

Answer:

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Step-by-step explanation:

Given:

$1+2+4+8+...$

Find:

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You are given the geometric sequence. From the given sum, you can see that

$b_1=1\\ \\b_2=2=1\cdot 2=b_1\cdot 2\\ \\b_3=4=2\cdot 2=b_2\cdot 2\\ \\b_4=8=4\cdot 2=b_3\cdot 2\\ \\....\\ \\r=2$

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2 years ago

28+87 divided by 3•2 to the third power

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Item 16 A sphere has a radius of 8 centimeters. A second sphere has a radius of 2 centimeters. What is the difference of the vol

Zigmanuir [339]

Answer:

$672\pi \text{ cm}^3$ .

Step-by-step explanation:

We have been given that a sphere has a radius of 8 centimeters. A second sphere has a radius of 2 centimeters. We are asked to find the difference of the volumes of the spheres.

We will use volume formula of sphere to solve our given problem.

$\text{Volume of sphere}=\frac{4}{3}\pi r^3$ , where r is radius of sphere.

The difference of volumes would be volume of larger sphere minus volume of smaller sphere.

$\text{Difference of volumes}=\frac{4}{3}\pi(\text{8 cm})^3-\frac{4}{3}\pi(\text{2 cm})^3$

$\text{Difference of volumes}=\frac{4}{3}\pi(512)\text{ cm}^3-\frac{4}{3}\pi(8)\text{ cm}^3$

$\text{Difference of volumes}=\frac{4}{3}\pi(512-8)\text{ cm}^3$

$\text{Difference of volumes}=4\pi(168)\text{ cm}^3$

$\text{Difference of volumes}=672\pi\text{ cm}^3$

Therefore, the difference between volumes of the spheres is $672\pi \text{ cm}^3$ .

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