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Evgesh-ka [11]
3 years ago
6

4) A safe contains 120 coins, the value of which is $10. If the coins consist of nickels and dimes, how many of each kind are in

it?
Mathematics
1 answer:
alexandr1967 [171]3 years ago
8 0
There are 40 nickels and 80 dimes
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measure a and measure b are vertical angles with measure a = x and measure b = 4x - 30. what is measure a?
Zolol [24]

Answer:

∠a = 10°

Step-by-step explanation:

The measure of ∠a = x

The measure of ∠b = 4x-30

It is also mentioned that the measure a and measure b are vertical angles. We need to find the value of a.

For vertically opposite angles,

∠a = ∠b

x = 4x-30

or

4x-30=x

Taking like terms together,

4x-x= 30

3x = 30

x = 10

So, the meausre of ∠a is equal to 10°.

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3 years ago
What is the significance of a correlation coefficient of 0.88?
AleksandrR [38]
The maximum positive value that the correlation coefficient can have is 1.
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3 years ago
What is the y-intercept of a line with the equation (y - 3) = 5(x + 2)?
Nookie1986 [14]
The y-intercept would be (0, 13)
7 0
2 years ago
How do I find ac in this problem
suter [353]

7 / x+4 = 5/x+1 =


5x+20 = 7x+7 =

20=2x+7

13=2x

x=13/2 = 6.5

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6.5+1 =7.5

10.5+7.5 = 18

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Solve 3v -12 = 15<br><br> v = -9<br> v = 9<br> v = 1<br> v = -1
svetoff [14.1K]

Answer:

v=9

Step-by-step explanation:

7 0
3 years ago
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