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Zielflug [23.3K]
3 years ago
13

Madi has $8.80 in pennies and nickels.

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0
Let p = number of pennies.
Let n = number of nickels.

We are given that n= 2p and the total value is $8.80.

We know that a penny = $0.01 and that a nickel = $0.05.

So $0.01p + $0.05n = $8.80.

Substitute 2p for n:
$0.01p + $0.05*2p = $8.80

$0.01p + $0.10p = $8.80

$0.11p = $8.80

p = 80
So n = 2p = 2*80 = 160

Thus there are 80 pennies ($0.8) and 160 nickels ($8.00). The value of all the coins is $8.80.
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barxatty [35]

Answer:

907.46 mm2

Step-by-step explanation:

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d = 34 mm

Therefore

Area A = (3.14 x 34^2)/4

= 907.46 mm2

8 0
1 year ago
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Tlachihualtepeti is a pyramid in mexico. each side of the base measures 450 meters and had an original height of 66 meters. How
storchak [24]

Answer:

Basically, we are to determine the volume of that pyramid.

Right Regular Pyramid Volume = (Area of the Base * Height) ÷ 3

Volume = (202,500  * 66) ÷ 3

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Step-by-step explanation:

3 0
2 years ago
PLEASE HELP!
Orlov [11]
We have that
<span>If (5x-4+13x=5) -------------->  then x=1/2
Step 1
</span>let's substitute the value of x = (1/2) in the expression [5x-4+13x] and verify its result
5*(1/2)-4+13*(1/2)
(5/2)-4+(13/2)
(5-4*2+13)/2----------> (5-8+13)/2=10/2=5
then 
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3 0
3 years ago
A jar contains only​ pennies, nickels,​ dimes, and quarters. There are 21 ​pennies, 26 ​dimes, and 15 quarters. The rest of the
pshichka [43]

Answer:

14

Step-by-step explanation:

21+26+15=62 72-62=14 :)

8 0
2 years ago
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What’s the answer<br><br><br> 5n-2=n+18
Sauron [17]

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Move n to the other side

Sign changes from +n to -n

5n-n-2= n-n+18

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Sign changes from -2 to +2

4n-2+2= 18+2

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4n/4= 20/4

Answer: n=5

4 0
3 years ago
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