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3 years ago

The ratio of bous to girls in the school is 1 to 4. If there are 20 girls, how many boys are there?

Mathematics

2 answers:

hjlf3 years ago

7 0

There is 5 boys since there is 20 girls

anyanavicka [17]3 years ago

6 0

if there's 1 boy to every 4 girls, there's going to be 5 boys for every 20 girls

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2 years ago

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If all the dimensions of the rectangular pyramid are multiplied by 1/5, what is the effect on the volume

Pachacha [2.7K]

Answer:

If all the dimensions of the rectangular pyramid are multiplied by 1/5, the volume will be 125 times smaller.

Step-by-step explanation:

A rectangular pyramid has the following dimensions:

length(l), height(h) and width(w)

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$V = \frac{l*h*w}{3}$

If all the dimensions of the rectangular pyramid are multiplied by 1/5

Then we have that:

$l = \frac{l}{5}, w = \frac{w}{5}, h = \frac{h}{5}$

The modified volume will be:

$V_{M} = \frac{\frac{l}{5}*\frac{w}{5}*\frac{h}{5}}{3} = \frac{\frac{l*w*h}{125}}{3} = \frac{l*h*w}{125*3} = \frac{1}{125}(\frac{l*h*w}{3}) = \frac{V}{125}$

If all the dimensions of the rectangular pyramid are multiplied by 1/5, the volume will be 1/125 of the original, that is, 125 times smaller.

4 0

2 years ago

How do you solve to get y?

dmitriy555 [2]

Answer:

y = 64

Step-by-step explanation:

Using the rule of logarithms

• $log_{b}$ x = n ⇔ x = $b^{n}$

Given

$log_{y}$ 4 = $\frac{1}3}$ , then

4 = $y^{\frac{1}{3} }$

Cube both sides

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3 years ago

Can someone Find the AB to this

Akimi4 [234]

Answer:

AB = 12.5

Step-by-step explanation:

BX is an altitude and a median. That means that triangle ABC is isosceles.

AB = CB

AB = 12.5

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2 years ago