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3 years ago

A sphere has a diameter of 9 inches.

Mathematics

1 answer:

Travka [436]3 years ago

8 0

The volume of the sphere is 47.69 cube inches.

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Please help me!! Need help with geometry! Thank you so much!!

marishachu [46]

Answer:

Step-by-step explanation:

A, b, c, and d are all points. the line segements are: ab, bc, cd, da, and ac

5 0

3 years ago

What is the y-intercept of a line that has a slope of 1/4 and passes through point 8,3

IrinaVladis [17]

m=1/4
(8,3)

Slope intercept form

$\\ \sf\longmapsto y=mx+b$

$\\ \sf\longmapsto 3=\dfrac{8}{4}+b$

$\\ \sf\longmapsto b+2=3$

$\\ \sf\longmapsto b=3-2=1$

6 0

3 years ago

Read 2 more answers

The angle marked a = 75°. Work out the value of x. The diagram is not drawn accurately.

NikAS [45]

Answer:

x+75=180

x=180-75

x=105

Step-by-step explanation:

x and a are on a straight line

a straight line=180

so you add the x to a=180

4 0

3 years ago

Drag each expression to the correct location on the model. Not all will be used

grandymaker [24]

Answer: $\dfrac{x^{2}+2x+1 }{\mathbf {x-1}} \cdot \dfrac{\mathbf {5x^{2} +15x-20} }{7x^{2} +7x}$

Step-by-step explanation:

$\dfrac{\dfrac{5x^{2} +25x+20}{7x} }{\dfrac{x^{2} +2x+1}{7x^{2} +7x} } =\dfrac{5x^{2} +25x+20}{7x} \times \dfrac{7x^{2} +7x}{x^{2} +2x+1}=\dfrac{5x^{2} +25x+20}{7x} \times \dfrac{7x(x +1)}{(x+1)^{2} }=\\\\=\dfrac{5x^{2} +25x+20}{x+1} =\dfrac{{5(x+1)(x+4)}}{x+1}=5(x+4)$

$5(x+4)=\dfrac{5(x-1) \cdot (x+4)}{x-1}=\dfrac{5x^{2} +15x-20}{x-1}$

Thus, the expressions will be used: (5x² + 15x - 20) and (x + 4).

Let's check:

$\dfrac{x^{2}+2x+1 }{\mathbf {x-1}} \cdot \dfrac{\mathbf {5x^{2} +15x-20} }{7x^{2} +7x} =\dfrac{(x+1)^{2} }{x-1} \cdot \dfrac{5(x-1) \cdot (x+4)}{7x(x+1)} =\\\\=\dfrac{(x+1) \cdot 5 \cdot (x+4)}{7x} =\dfrac{5x^{2} +25x+20}{7x}$

5 0

3 years ago

Can anyone answer this?

kari74 [83]

The answer to this is to try the hardest you can! I believe in you :)

7 0

4 years ago