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3 years ago

Determine the number of operations needed to solve 7c = 84

Mathematics

2 answers:

Hoochie [10]3 years ago

3 0

Answer:

Step-by-step explanation:

7c=84

c=84/7

c=12

Luda [366]3 years ago

3 0

Answer:

Step-by-step explanation:

You need division and multiplication (division for 84/7 and multiplication to identify 7c = 7 x c), which means 2.

Hope that helps!

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3 years ago

N = x + y - n = 5 and part two x = u + v = o whats the answer?

Colt1911 [192]

Just substitute the value of x from second equation into first equation:
N = x + y - n = 5
N = u + v + y - n = 5
N = 0 + y - n = 5

In short, N would be equal to y - n which is still equal to 5

Hope this helps!

8 0

3 years ago

Work out the perimeter of this semicircle with radius 3cm. Give your answer in terms of π

kondaur [170]

Step-by-step explanation:

Given :-

A semicircle is given with radius of 3cm .

And we need to find the perimeter of the semicircle . We know the perimeter as ,

$:\implies$ Perimeter = πr

$:\implies$ Perimeter = 3cm × π

$:\implies$ Perimeter = 3π cm .

Now there is the diameter of circle is 6cm . Hence totally the perimeter is ,

$:\implies$ Perimeter = 3π + 6 cm

We were supposed to give answers in terms of π .

<h3>Hence the perimeter is ( 3π + 6 ) cm</h3>

5 0

3 years ago

I need help on this problem!!! please help!!!

MA_775_DIABLO [31]

(0.1x-22)+(0.3x-54)=90

First combine like terms

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Now add 76 on both sides

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Divide by 0.4 on each side to isolate x

X= 415

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lidiya [134]

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Step-by-step explanation:

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