All categories

3 years ago

Please help, 10 points

Mathematics

1 answer:

mario62 [17]3 years ago

8 0

let q= quarters, let n = nickles.

Note that there are 4 times as many quarters as nickles: q = 4n

There is $2.10 in all

n + 4n = 2.10, or (A) (i believe if i read it correctly) is your answer

hope this helps

You might be interested in

PLEASE HELP MEEEEEEEEEE

Alona [7]

Answer:

Step-by-step explanation:

here's your solution

=> Both the traingle are similar hence ,

=> it's corresponding sides are in equal ratio

=> so,8/20 = 6/y

=> 8y = 20*6

=> y= 20*6/8

=> y = 15

 hope it helps

4 0

2 years ago

I HAVE A CYLINDER AND cone WITH THE

Vlad1618 [11]

Answer:

99 in³

Step-by-step explanation:

Let the radius and height of each be r and h in. respectively.

Write an equation for the volume of cone.

Volume of cone= ⅓πr²h

⅓πr²h= 33

Multiply both sides by 3:

πr²h= 99

Volume of cylinder= πr²h

We have found the value of πr²h previously, which is 99.

Thus, the volume of the cylinder is 99 in³.

6 0

2 years ago

Variance is_________.

katrin [286]

Answer:

Step-by-step explanation:

Variance can be said to be a measure of dispersion for a random sample.

Variance = pq/n

When given the variance, we can find the standard deviation.

Standard deviation = √variance

= √pq/n

3 0

3 years ago

Which is bigger 0.125 or 0.15

brilliants [131]

0.15 is bigger, cause the second digit after the decimal is bigger. You would have to add another 0.025 to 0.125 to bring it up to 0.15

3 0

3 years ago

Read 2 more answers

A cube-shaped gift box has a volume of 5.12 cubic inches. What is the side length of the box?

kati45 [8]

recall that a cube has all equal sides, check the picture below.

$\bf \textit{volume of a cube}\\\\
V=x^3~~
\begin{cases}
x=side's~length\\[-0.5em]
\hrulefill\\
V=5.12
\end{cases}\implies 5.12=x^3
\\\\\\
\sqrt[3]{5.12}=x\implies 1.72354775\approx x$

6 0

2 years ago