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3 years ago

Which of the following ratios is equivalent to 3:4?

Mathematics

2 answers:

Lana71 [14]3 years ago

8 0

9:12 because if you multiply both sides by three it gives you 9 and 12

sveticcg [70]3 years ago

6 0

Answer:

Its A

Step-by-step explanation:

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A blueprint scale is 1/4 in=1ft. If the blueprint measurement is 2in x 1in, what should you cut?

emmainna [20.7K]

8ft by 4ft.

This is because there are 8/4 and 4/4 to make up the blueprint. Therefor you have to multiply the factor by 8 and 4.

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3 years ago

The formula for the volume of a sphere is v= 4/3 3.14rWhat is the formula solved for r?

prohojiy [21]

Answer:

$r = \frac{3}{4\pi}V$

Step-by-step explanation:

First, the formula for the volume of a sphere is:

$V = \frac{4}{3}\pi r^3$

$\frac{3}{4}V = \pi r^3$

$\frac{3}{4}V\frac{1}{\pi} = r^3$

$r^3 = \frac{3}{4\pi}V$

$r = \sqrt[\leftroot{-2}\uproot{2}3]{\frac{3}{4\pi}V}$

If there is any steps you are unsure of, feel free to ask in the comments.

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3 years ago

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Andru [333]

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8 0

3 years ago

Can anyone helppp I’m not sure if my answer is correct!!

Brrunno [24]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the value for x. Round your answer to the nearest hundredth. Area of the triangle = 8 ft^2

zmey [24]

Answer:

x = 3.51

Step-by-step explanation:

Since, formula to determine the area f a triangle is,

Area = $\frac{1}{2}(\text{Base})(\text{Height})$

8 = $\frac{1}{2}(x + 1)(3x - 7)$

16 = x(3x - 7) + 1(3x - 7)

16 = 3x² - 7x + 3x - 7

16 = 3x² - 4x - 7

0 = 3x² - 4x - 23

3x²- 4x - 23 = 0

By quadratic formula,

x = $\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

x = $\frac{4\pm \sqrt{(-4)^{2}-4(3)(-23)}}{2(3)}$

x = $\frac{4\pm \sqrt{292}}{6}$

x = $\frac{4\pm 17.09}{6}$

x = 3.51, -2.18

But the length of sides can't be negative.

Therefore, x = 3.51 will be the answer.

8 0

3 years ago