What expression can be used for estimating 868 divided by 28

Answers

Answer 1

Answer: 868 is about 870, and 28 is about 30, so your expression would be 870 divided by 30 which would be 29 and the actual answer is 31, so your estimate would be close to your actual answer.

Answer 2

Answer: You could do 870/30=29.
Or you could do 868/28=31 and then round it but it looks like it doesn't need rounding.

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The strandard width of 8 lanes in swimming pools used for conpetitions is 21.92 meters. The standard width of 9 lanes is 21.96 meters. How much wider is each lane when there are 8 lanes than when there are 9 lanes?? HELP ME PLEASEEE!!! You will get 28 points.

Answers

multiply 8x21.92 and find the sum then multiply 9x21.92 and find the sum then subtract both sums together and you have your answer

ok so first you multiply 8x21.92 once you solve that you subtract it for what you get when you multiply 9x21.92.

A rug covers 1/4 of the floor.The area of the rug is 10ft what is the area of the floor?

Answers

the area of the floor is 40 square ft

The area of the rug is 10ft

let the floor area x

so according to the question, x/4 = 10 so the area of the floor is x=40ft (ans)

To find 61 x 1000, annex zeros to form the product?

Answers

Answer:

The product is $61* 1000=61000$

Step-by-step explanation:

Given : Expression $61* 1000$

To find : Annex zeros to form the product?

Solution :

Expression $61* 1000$

When we multiply any number with multiple of 10, then we will first multiply number by 1 and then put the the number of zero in multiple of 10.

So, multiply 61 by 1 and then add 3 zeroes to the product.

$61* 1000=61000$

Therefore, The product is $61* 1000=61000$

All you do is times 61 by 1 and add three zeros, so the answer is 61000.

Hope that works.

(08.02)A pair of equations is shown below.x + y = 2
y = one halfx + 5

If the two equations are graphed, at what point do the lines representing the two equations intersect?

(4, −2)
(−2, 4)
(2, 5)
(5, −2)