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Bond [772]
3 years ago
8

Helpppppppppppp plss with this problem

Mathematics
1 answer:
3241004551 [841]3 years ago
6 0

Given :7872 ÷ 305.

Because it's estimation. So, we need to estimate the number 7872 to 8000.

In order to divide 8000 by a number we need to estimate 305 to the 400. Because 400 is exact divisor of 8000.

If we divide 8000 by 400 we get 20.

And it's obviously less then 60000 ÷ 300= = 200.

20 < 200.

<h3>Therefore, Harrison is absolutely correct.</h3>
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The cafeteria serves pizza every 10 days and corn every 4 days. If they are serving pizza and corn today, in how many days will
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Well it would be 100 days

Step-by-step explanation:

Because they had pizza every ten days and if you add 5 days a week that's 50 days they sell pizza. If your talking corn they sell it every 4 days times 5 days a week that's 20 days of corn. Then you do 50 x 20 and then you get 100 days of pizza and corn, so it would be 100 days before they sell pizza and corn together again!

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a line passes through the points (2, -3) and (b, 7) is parallel to the line y=-2x + 17. Find the value of b.
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A librarian is expanding some sections of the city library. He buys book at a special price from a dealer who charges one price
stiks02 [169]

Answer:

The special price of 1 hardcover book = $13

The special price of 1 paperback book = $6

Step-by-step explanation:

Here, let us assume the special price of 1 hardcover book = $ m

and the the special price of 1 paperback  book = $ n

Now, the  price of 12 hardcover books  = 12 x ( Price of 1 hardcover)  = 12 m

and  the  price of  73 paperback books  = 73 x ( Price of 1 paperback)  = 73 n

Also, The price paid for  12 hardcover and  73 paperback books is $594

⇒ 12 m +  73  n = 594  .......  (1)

Similarly:

The  price of 11 hardcover books  = 11 x ( Price of 1 hardcover)  = 11 m

The  price of  87 paperback books  = 87 x ( Price of 1 paperback)  = 87 n

Also, The price paid for  11 hardcover and  87 paperback books is $665.

⇒ 11 m +  87  n = 665  .......  (2)

Now, solving both equation for the value of m and n , we get:

12 m +  73  n = 594       x 11          

11 m +  87  n = 665    x   (-12)

we get:  132 m +  803 n =  6534

             - 132 m  - 1044 n = - 7980

adding both equation, we get:

132 m +  803 n   - 132 m  - 1044 n = - 7980 +   6534

or,  - 241  n =  - 1446

or, n = 1446/241 =  6, or n = 6

Now,  Substituting n = 6 in 12 m +  73  n = 594 ,

we get: 12 m +  73 ( 6)  = 594, m =   13

Hence, The special price of 1 hardcover book = $13

and The special price of 1 paperback book = $6

7 0
3 years ago
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