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makvit [3.9K]
3 years ago
5

What's this answer???

Mathematics
1 answer:
Georgia [21]3 years ago
7 0
Youn could test all of the options by putting 8 and 3 in for a and b.

A.    a - b = 5
       8 - 3 = 5
            5 = 5

B.   a + b = 5
      8 + 3 = 5
            11 ≠ 5

C.   a - b = 8
      8 - 3 = 8
           5 ≠ 8

D.   a + b = 8
      8 + 3 = 8
            11 ≠ 8

As you can see, the only one that works is A. a - b = 5.
      
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Earl is ordering supplies. Yellow paper costs $4.00 per ream while white paper costs $7.50 per ream. He would like to order 100
Eddi Din [679]

Answer:

Earl should order 76 yellow paper reams and 24 white paper reams.

Step-by-step explanation:

This problem can be computed as system of equations.

I will say that x is the number of yellow paper reams and that y is the number of white paper reams.

Earl will order 100 reams in total, so

x + y = 100

He has a budget of $484, so this is what he is going to spend. Each yellow paper ream(x) costs $4.00 and each white paper ream costs $7.50, so we know that

4x + 7.5y = 484

To know how many reams of each color should he order, we need to solve the following system of equations

1) x + y = 100

2) 4x + 7.5y = 484

I am going to write x as a function of y in equation 1), and then replace it in equation 2).

x = 100-y

Now replacing in equation 2)

4(100-y) + 7.5y = 484

400 - 4y + 7.5y = 484

3.5y = 84

y = 24.

Returning to equation 1)

x = 100-y = 100-24 = 76

So, Earl should order 76 yellow paper reams and 24 white paper reams.

5 0
3 years ago
(3 3/4)÷(−2 1/2)<br><br> IM IN A TIME CRUNCH PLEZZZ HALPPPP
Lorico [155]
For this question the answer is -3/2
6 0
4 years ago
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Dan borrowed $750.00 from his brother who is charging him 8% simple interest. If Dan pays his brother back in 6 months, how much
Artemon [7]

Solution:

we are given that

Dan borrowed $750.00(=P) from his brother who is charging him 8% (=r)simple interest.

Dan pays his brother back in 6 months(=t).

we have been asked to find- how much does he have to pay back including the interest?

As we know that

(Simple \ Interest)SI=\frac{PRT}{100}

Substitute the values we get

SI=\frac{750*8*1/2}{100}= 30\\

Hence net payable amount is 750+30=$780


8 0
3 years ago
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7 0
2 years ago
HELP!!
never [62]

Answer:

ITs a

Step-by-step explanation:

7 0
3 years ago
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