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Dovator [93]
3 years ago
13

there are 2 numbers. they both have a highest common factor of 3, and a lowest common multiple of 45. what are the numbers.

Mathematics
1 answer:
GarryVolchara [31]3 years ago
4 0

Answer:

9 and 15

Step-by-step explanation:

lowest common multiple 45

9, 18, 27, 36, 45, 54, 63, 72, 81, 90

15, 30, 45

HCF

3 X 3 = 9

3 X 5 = 15

3 is hcf

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When Cullen cleaned behind his dresser, he found 73 cents, all in nickels and pennies. There were 25 coins. How many were nickel
Georgia [21]
Let n = number of nickels, and p = number of pennies.
The number of coins is 25, so we get this equation.
n + p = 25

The value of the coins is 0.05 per nickel, and 0.01 per penny.
0.05n + 0.01p = 0.73

Now you have a system of equations.

n + p = 25
0.05n + 0.01p = 0.73

Solve the first equation for n:
n = 25 - p

Now substitute into the second equation.

0.05(25 - p) + 0.01p = 0.73

1.25 - 0.05p + 0.01p = 0.73

-0.04p = -0.52

p = 13

There were 13 pennies.
Now we substitute 13 for p in n + p = 25 to find out the number of nickels.

n + 13 = 25
n = 12

There are 13 pennies and 12 nickels.

Check: 13 pennies and 12 nickels does total 25 coins.
13 * 0.01 + 12 * 0.05 = 0.13 + 0.60 = 0.73
The value is $0.73.
Our answer is correct.
5 0
3 years ago
Jack, Jill, and Ron share a 2-bedroom apartment. Rent is represented by R. The water bill is $20 per person. The electric bill i
erastovalidia [21]
Jack: 2R/3
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4 0
3 years ago
Lines g,h and l are parallel and m&lt; 2 = 129<br> What is the m &lt; L
Bingel [31]
180-129= 51
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3 years ago
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asambeis [7]
Hello,

Answer A

s(x)=3x-7
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Hope this helped!!! :P

7 0
3 years ago
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