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posledela
4 years ago
6

A jar contains 50 coins, all either 2 cents or 5 cents. The total value of the coins is $1.87.

Mathematics
2 answers:
trapecia [35]4 years ago
8 0

Answer:

there would be 21 cents

lianna [129]4 years ago
3 0

Answer:

they would be 21 cents coins

<em>HOPE</em><em> </em><em>IT</em><em> </em><em>WILL</em><em> </em><em>HELP</em><em> </em><em>U</em><em>!</em><em> </em>

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A school marching band has 200 members.There are 50 band members who play brass instruments.What percent of the band members pla
andrew11 [14]

Answer:

25% Or

1/4 Or

0.25

Step-by-step explanation:

Solve:

200 divided by 50 is 4

Check your math:

50*4= 200

Your only counting a single piece of this whole. This can be written in 3 ways, 25%, 1/4, or 0.25.

Hope this helps!

4 0
3 years ago
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8. Marvin has a board that's 15' 3/4" long. He cuts it in half. What is the length of both boards?​
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Step-by-step explanation:

7 0
3 years ago
What is equivalent to 8a-7-29a-8<br> A. 65a+80<br> B. -21a-15<br> C. 3a<br> D. 37a+15
Reptile [31]

Answer:

B. -21a-15

Step-by-step Explanation:

8a-7-29a-8 \\  \\  = 8a - 29a - 7 - 8 \\  \\  =  - 21a - 15

7 0
3 years ago
For the function f(x) = x2 ­ -12, find (f o f­-1)(4) A. 0 B. 4 C. 10 D. 6
slega [8]

We actually don't need to do any computation. By definition, the inverse function f^{-1} changes the role of input and output. So, if a function f maps x onto y, the inverse function maps y onto x.

You have to think like this: if the function makes a step further, the inverse function makes that same step back.

This means that the composition f \circ f^{-1} is always the identity function f(x) = x. In fact,

(f\circ f^{-1})(x) = f(f^{-1}(x)) = x

So, for every function, you have

(f\circ f^{-1})(4) = f(f^{-1}(4)) = 4

5 0
3 years ago
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noname [10]

Answer:

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Step-by-step explanation:

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