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Scorpion4ik [409]
3 years ago
13

A jar containing only nickels and dimes contains a total of 60 coins value is 4.45

Mathematics
1 answer:
klemol [59]3 years ago
3 0
The equations would be:

n + d = 60 

5n + 10d = 445

Solved, the answers are that there are 29 nickels and 31 dimes in the jar.
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Citrus2011 [14]

Answer:

A)  B is greater

B) when C = 21, A = 5 and B = 15

C) A must be 0, 5, or 12 for C to be greater than B

Step-by-step explanation:

A)  when a = -3, c = -20 and b = 4(-3)-5 so B = -17

B) when c = 21, a = 5 and b = 4(5)-5 so B = 15

C) C is greater than B when a = 0, 5, and 12

when a = 0, b = 4(0)-5 or -5

when a = 5, b = 4(5)-5 or 15

when a = 12, b = 4(12)-5 or 43

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3 years ago
Number 28 ignore the bubbled in answer
Ghella [55]

Answer:

y = -7x+34

Step-by-step explanation:

We have 2 points, so we can find the slope

m = (y2-y1)/(x2-x1)

    = (6--1)/(4-5)

    = (6+1)/(4-5)

     = 7/-1

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We can use point slope form to make an equation

y-y1 = m(x-x1)

y--1 = -7(x-5)

y+1 = -7(x-5)

Distribute

y+1 = -7x+35

Subtract 1 from each side

y+1-1 = -7x+35-1

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(Problem of the Week)
ira [324]

Answer:

He won 13 times and lost 1 time

Step-by-step explanation:

divide 67 by 5 so 67÷5 you would get 13.4 you take the whole number 13 and multiply it by 5 and that will get you to 65 so then you only have 2 left over and if you lose you get 2 point so therefore you know that he lost only once

(13•5)+2=67

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Can somebody help me?
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(2,4) -2,5 -8,-3 done
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3 years ago
10x-4.5+3x=12x-1.1 what is the solution for x in the equation
never [62]

Answer: x=3.4

<u>Simplify both sides of the equation</u>

<u></u>10x+-4.5+3x=12x+-1.1<u></u>

<u></u>(10x+3x)+(-4.5)=12x-1.1(Combine Like Terms)

13x+-4.5=12x-1.1

<u>Subtract 12x from both sides</u>

<u></u>13x-4.5-12x=12x-1.1-12x\\x-4.5=-1.1<u></u>

<u></u>

<u>Add 4.5 to both sides</u>

<u></u>x-4.5+4.5=-1.1+4.5\\x=3.4<u></u>

6 0
3 years ago
Read 2 more answers
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