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grigory [225]
2 years ago
7

I need help please I suck at math

Mathematics
2 answers:
WINSTONCH [101]2 years ago
8 0
I did1.25 y
To the powee of 3
Scrat [10]2 years ago
3 0
It’s b I’m positive because I did 1.25 to the power of 3 and put that into fractional form
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Can someone please help me??
babunello [35]
I'll help on 12. You know that 5*5 is 25. therefore what times 5 equals 20? 
3 0
3 years ago
there are nickels, dimes, and quarters in a piggy bank. altogether, the coins are worth $3.65. the number of dimes is three time
hoa [83]

This question is solved using a system of equations, and doing this, we get that: There are 9 quarters, 4 nickels and 12 dimes.

I am going to say that:

x is the number of nickels.

y is the number of dimes.

z is the number of quarters.

In all, they are worth $3.65.

A nickel is worth $0.05, a dime is worth $0.1 and a quarter is worth $0.25, so:

0.05x + 0.1y + 0.25z = 3.65

Dimes: 3 times greater than nickels:

This means that:

y = 3x

Quarters: One greater than double the number of nickels:

This means that:

z = 2x + 1

Value of x:

We have y and z as function of x, so we can replace into the equation and find the value of x, so:

0.05x + 0.1y + 0.25z = 3.65

0.05x + 0.1(3x) + 0.25(2x+1) = 3.65

0.05x + 0.3x + 0.5x + 0.25 = 3.65

0.85x = 3.4

x = \frac{3.4}{0.85}

x = 4

y and z:

y = 3x = 3(4) = 12

z = 2x + 1 = 2(4) + 1 = 9

There are 9 quarters, 4 nickels and 12 dimes.

A similar question is found at brainly.com/question/17096268

4 0
2 years ago
Needs to be graphed and solved please help
il63 [147K]

Answer: here it is graphed and it cant be solved because there are no solutions as seen on the graph!

Step-by-step explanation: hope i helped please mark brainliest!

7 0
3 years ago
10.5 equal or less than 10.005
maksim [4K]
10.5 is more than 10.005
5 0
3 years ago
HELP W MATH PLEASE!!
icang [17]

Answer: 75

8 + 7 = 15

15 * 5 = 75

3 0
3 years ago
Read 2 more answers
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