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MariettaO [177]
3 years ago
7

-7 = -1 + x/3, solve and explain with an algebraic property

Mathematics
2 answers:
k0ka [10]3 years ago
4 0
-7 = -1 +  \frac{x}{3}

Multiply both sides by 3 :

-3*1 + 3* \frac{x}{3}  = -3*7

Refine:

x - 3 = -21

x = - 21 + 3

x = - 18

hope this helps!.
jek_recluse [69]3 years ago
4 0
-7= -1+ x/3
⇒ -1+ x/3= -7 (switch side)
⇒ x/3= -7+ 1
⇒ x/3= -6
⇒ x= -6* 3
⇒ x= -18

Final answer: x= -18~
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Simplify the following expression.
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Answer:

20

Step-by-step explanation:

Remember PEMDAS!

So first parentheses:

1.6^2 = 2.56

8.7 + 9.3 = 18.

Because that is inside another parentheses you multipy them.

2.56 x 18 = 46.08

Now: 46.08 divided by 1.8 = 25.6

Now subtract:

25.6 - 3.7 - 1.9 which equals 20!

Hope that helped!

6 0
2 years ago
The measures of the angles of a triangle are shown in the figure below. Solve for x.
morpeh [17]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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What is 7 (1+10p) + 8 (1 + 6p)
Komok [63]

Answer:

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Step-by-step explanation:

First, we want to get rid of the parentheses in the equation. To do that, let's start with 7(1+10p). We multiply 7 by each item in the parenthesis, and get 7+70p. Keep that little thing in mind, we will use it later. Next, same process with the other part, and we get 8+48p. We multiplied both parts out, so now we just add like terms. 7 and 8 don't have letters, so we add them to get 15. 10p and 48p do have letters, so we add those together and get 58p. We can't add that to the other numbers, because 58p is 58 times p, and 15 doesn't have that p so it wouldn't work without knowing p. What we are left with, by simplifying the problem, is 58p+15, or 15+58p. The order doesn't matter, as long as you have that answer.

6 0
3 years ago
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If the exterior angle of a regular polygon is 7.2 degrees, what is the name of that polygon?
kirill [66]

A regular polygon with exterior angle of 7.2 degrees is a 50-gon.

<h3>Regular polygon</h3>

Regular polygon are polygon that are equiangular. This simply means they are polygon with equal angles.

The formula to find the number of sides of a polygon using exterior angle is as follows:

  • exterior angle = 360 / n

where

n = number of sides

Therefore,

7.2 = 360 / n

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7.2n = 360

divide both sides by 7.2

n = 360 / 7.2

n = 50

The polygon has 50 sides. Therefore, it is a 50-gon

learn more on polygon here: brainly.com/question/12105506

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Marizza181 [45]
The answer is c or A
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