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4 years ago

Two similar figures have a side ratio of 4:5 . What is the ratio of their volumes? And the areas

Mathematics

1 answer:

34kurt4 years ago

7 0

Volumes: (cubed)
4^3:5^3
= 64:125

Areas: (squared)
4^2:5^2
= 16:25

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What expression is equivalent to 2(m-5)+6? 2m-1 2m+22 2m-4 2m+16

DENIUS [597]

2(m - 5) + 6PEMDASu multiply 2 into (m-5)2*m and 2*-5that would be 2m-10 + 6now subtract common variables-10 + 6 = -42m - 4

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3 years ago

Simplify. (-2u?+u-3)+(4u²+7u+5)

Pavlova-9 [17]

Answer:

$2u^2+8u+2$

Step-by-step explanation:

$\left(-2u^2+u-3\right)+\left(4u^2+7u+5\right)$

$\blacksquare$ Remove parentheses:

$\longmapsto$ $-2u^2+u-3+4u^2+7u+5$

$\blacksquare$ Combine like terms:

$-2u^2+4u^2+u+7u-3+5$

$\longmapsto$ $-2u^2+4u^2=2u^2$

$\longmapsto$ $\:u+7u=8u$

$\longmapsto$ $-3+5=2$

$\leadsto$ $2u^2+8u+2$

_______________________

3 0

3 years ago

Read 2 more answers

An article reports "attendance dropped 7% this year, to 6854." What was the attendance before the drop? (Round your answer to th

Masja [62]

Answer:

7370

Step-by-step explanation:

Let x represent attendance before drop.

We have been given that an article reports attendance dropped 7% this year, to 6854. We are asked to find the attendance before the drop.

Since attendance dropped by 7%, this means that attendance after drop was 93% of x.

We can represent this information in an equation as:

$x-\frac{7}{100}x=6854$

$x-0.07x=6854$

$0.93x=6854$

$\frac{0.93x}{0.93}=\frac{6854}{0.93}$

$x=7369.89247$

$x\approx 7370$

Therefore, the attendance before drop was 7370.

4 0

4 years ago

A supermarket sells 2 cans of ground coffee for $18.50. The cost of coffee varies directly with the number of cans. How much do

Flura [38]

5 cans of coffee cost $46.25

8 0

3 years ago

Read 2 more answers

The amount of simple interest accrued on a sum of money varies jointly with the amount of money, the interest rate, and the time

ziro4ka [17]

Find the amount of the first one
P=168/0.04*3
P=1400
Use the in the second one to find the interest
I=1400*0.06*4
I=336
336 is double the amount of 168
So the answer is B

7 0

3 years ago

Read 2 more answers