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3 years ago

A Student writes "the sum of 7 times a number n plus 5"to describe the expression 7(n+5) explain the error

Mathematics

1 answer:

ziro4ka [17]3 years ago

6 0

7(N) + 5 It's 7 times a number first, then add 5

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12^13–12^12+12^11 is divisible by 7 and 19.

fiasKO [112]

Answer:

The statement is true

Step-by-step explanation:

The question is as following :

$12^{13}-12^{12}+12^{11}$ is divisible by 7 and 19, true or false?

The given expression is $12^{13}-12^{12}+12^{11}$

Take $12^{11}$ as a common

$12^{13}-12^{12}+12^{11} = 12^{11}*(12^2-12^1+12^0)\\= 12^{11} *(144-12+1)\\=12^{11} * 133\\= 12^{11} * 7 * 19$

So, $12^{11} * 7 * 19$ divided 7 = $12^{11} * 19$

And $12^{11} * 7 * 19$ divided 19 = $12^{11} * 7$

$12^{13}-12^{12}+12^{11}$ is divisible by 7 and 19 (True)

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2 years ago

A cheetah run 70 miles per hour what is the speed for feet per hour

pochemuha

Answer:

The correct answer to this question is that the cheetah can run 369,000 feet per hour. We can work this out in the following way:

One mile equals 1760 yards

In feet that is 3 x 1760 or 5,280

So Feet per hour will be 5280 x 70 or

369,600 feet per hour.

Read more on Brainly.com - brainly.com/question/134707#readmore

Step-by-step explanation:

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3 years ago

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Lunna [17]

Answer:

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Step-by-step explanation:

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The product of two irrational number is always irrational true or false

Reika [66]

"The product of two irrational numbers is SOMETIMES irrational." The product of two irrational numbers, in some cases, will be irrational. Hope this helps ya out! -Ella

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mart [117]

Answer:

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