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Tomtit [17]
3 years ago
13

What is 20-7n=8(n-2). Please show steps.

Mathematics
1 answer:
ipn [44]3 years ago
4 0

First, you need to distribute the right side of the equation : 8n - 2

Now the equation is : 20 - 7n = 8n - 2

Add 2 to both sides : 22 - 7n = 8n

Add 7n to both sides : 22 = 15n

Divide both sides by 15 : ( I had to round this one) 1.5 = n

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elena55 [62]

Answer:

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Step-by-step explanation:

5 0
3 years ago
before getting to school john has a few errands to run john has to walk 5 blocks to the galley and 9 blocks to the library befor
Serggg [28]

Answer:

  9 blocks

Step-by-step explanation:

The total of what John has already walked and the number more he must walk will be equal to the number he has to walk to get to school.

  12 + more = 5 + 9 + 7

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  more = 9

John must walk 9 blocks more.

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We recognize that 5+7 = 12, so that last part of the sum totals zero.

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2 years ago
If you add 1 to half of 1, then half of 1 to the previous number, and so on, will you ever get to 2?
lisov135 [29]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the value of each variable.
Harrizon [31]

Step-by-step explanation:

b is per the identity of angles on parallel lines when intersected by one inclined line the same as the 40° angle.

so,

b = 40°

due to the parallel nature of the 2 lines there is a symmetry effect for such shapes inscribed a circle. the upper and the lower triangle must be similar. and when applying a vertical line through the central crossing point, everything to the left is mirrored by everything on the right.

so, angle c must be equal to angle b.

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and as the sum of all angles in a triangle is always 180°, d is then

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the interior angle of the arc angle a is the supplementary angle of d (together they are 180°), because together with d they cover the full down side of the top-left to bottom-right line.

interior angle to a = 180 - 100 = 80°

due to the symmetry again, the arc angle opposite to a is the same as a.

as we know, the interior angle to a pair of opposing arc angles is the mean value of the 2 angles.

so, we have

(a + a)/2 = 80

2a/2 = 80

a = 80°

there might (and actually should) be some more direct approaches for "a" out of the other pieces of information, but that was the most straight one right out of my mind, and I don't spend time on finding additional shortcuts, when I have already a working approach.

8 0
1 year ago
One serving of milk has 120 Calories. If one serving is equal to 1 cup, how many Calories are in 1 fluid ounce? (1 cup = 8 fluid
aleksandrvk [35]

Answer:

15

Step-by-step explanation:

the answer should be 15 because, if one cup is 120 calories or 8 fluid ounces is 120 calories,  divide 120 by 8 so you can find how many calories one fluid ounce is.

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