How many grains od sand in 8x40m

Answers

Answer 1

Answer: well im going to say that that means 40 million since we are talking about grains of sand here
so this is what 40 million looks like
40,000,000
so lets multiply that by 8
40,000,000 x 8 = 320,000,000
so your answer is 320,000,000
:P

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Two numbers have their own reciprocals. What are they?

Answers

The two numbers that are the same as their reciprocal are 1 and -1.

The reciprocal of a/b is b/a.

The reciprocal of 1 is 1.

1 is nothing but 1/1. And if you flip the numerator and denominator, you get 1/1 which is 1.

The reciprocal of -1 is -1.

-1 is nothing but -1/1. And if you flip the numerator and denominator, you get 1/-1 which is -1.

The only two numbers that have their own reciprocals are 1 and -1.

The two numbers that have their own reciprocals is 1 and -1

8x=2y+5
3x=y+7
what is the solution ?

Answers

Answer: (4.5, 6.5) is your solution

Step-by-step explanation:

You need either the x term or the y term to be the same in both equations so you can eliminate them...

8x=2y+5

6x=2y+14

Now you can subtract the two equations...

2x=9

Divide 9 by 2....

x=4.5 or 4 1/2

Plug in x into one of the original equations to find y...

13.5=y+7

Subtract 7 from 13.5...

6.5=y

Find the GCF of 38m and 57n.
a)9mn
b)19mn
c)19

Answers

It's only 19 because the terms don't both have m and n in them

I think that the answer would be C 19

Mr White can travel for 6 hours while taking 3 breaks of 10 minutes each. Once, he had to travel for 36 hours. How many minutes in breaks did he take?