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Travka [436]
3 years ago
8

What is 13 - x = -7 what is x in this equation

Mathematics
2 answers:
ziro4ka [17]3 years ago
7 0

Answer:

20

Step-by-step explanation:

13 - x = -7

make x subject of the formular

13 +7 = x

20 = x

thus,

x= 20.

Zielflug [23.3K]3 years ago
3 0

Answer:

x = 20

(hope i helped)

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Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations
Natali5045456 [20]
Do solve this you use PEMDAS. This stands for:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Because there are no parentheses or exponents in this equation, we go straight to the division.

1) 8 divided by 4 equals two so we rewrite the equation. 5+6 x 2 - 2 + 7.

2) Next in order of pemdas is multiplication. Yes I know that in pemdas multiplication does come before division but it doesn’t matter in this problem which you do first. So now we do 6 x2 =12. We then rewrite the equation 5+12-2+7.

3) lastly, addition and subtraction are grouped together and you can just do it in order of the problem. So we do 5+12=17. 17-2=15. And 15+7=22.

So the final answer is: 22
8 0
3 years ago
Read 2 more answers
7.1 divided by 312.755
RUDIKE [14]

answer 0.0227014756

Step-by-step explanation:

or if you meant 312.775/7.1 it's 44.0528169

6 0
3 years ago
The height of a wooden pole, h, is equal to 20 feet. A taut wire is stretched from a point on the ground to the top of the pole.
kykrilka [37]

ANSWER

D. 25 feet

EXPLANATION

The height of the wall,h, the taut wire and the distance from the base of the pole to the point on the ground, formed a right triangle.

According to the Pythagoras Theorem, the sum of the length of the squares of the two shorter legs equals the square of the hypotenuse.

Let the hypotenuse ( the length of the ) taught wire be,l.

Then

{l}^{2}  =  {h}^{2}  +  {b}^{2}

{l}^{2}  =  {20}^{2}  +  {15}^{2}

{l}^{2}  =  400 + 225

{l}^{2}  =  625

l=  \sqrt{625}  = 25ft

8 0
3 years ago
Please answer these questions quick thank you!
BabaBlast [244]

Answer:

3

Step-by-step explanation:

8 0
2 years ago
Help please i will give brainliest
tangare [24]

Answer:

7\geqr

Step-by-step explanation:

-1.3\geq2.9-0.6r

-2.9   -2.9

-4.2 ≥ -0.6r

/-0.6    /-0.6

7   ≥   r

8 0
3 years ago
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