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NikAS [45]
3 years ago
15

Solve each system of equations algebraically 1. y=x+5 y=6 2. y=x+12 y= -18 3. y=x-10 y= -12

Mathematics
1 answer:
OleMash [197]3 years ago
5 0

Answer:

Step-by-step explanation:

ky=x+5y 62y=x

Step: Solvey=x+5yfor x:

y=x+5y

y+−x=x+5y+−x(Add -x to both sides)

−x+y=5y

−x+y+−y=5y+−y(Add -y to both sides)

−x=4y et's solve for x.

y=x+12y

Step 1: Flip the equation.

x+12y=y

Step 2: Add -12y to both sides.

x+12y+−12y=y+−12y

x=−11y

Answer:

x=−11y

 

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If a video is getting 12,000 views every 4 hours, how long will it take to reach 30,000 views?
ValentinkaMS [17]

Step-by-step explanation:

12,000 views = 4 hours

=> 30,000 views = 4 * (30000/12000) = 10 hours.

Hence it will take 10 hours.

4 0
3 years ago
Read 2 more answers
What are 2 binomials that are factors of this trinomial? x^2-x-20
S_A_V [24]

Answer:

(x-5) (x+4)

Step-by-step explanation:

x^2-x-20

What two terms multiply to -20 and add to -1

-5*4 = -20

-5+4 = -1

(x-5) (x+4)

8 0
3 years ago
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Solve for 2:<br> 2x + 62°<br> 52 + 38°<br> 2 =
Paladinen [302]

Answer:

The answer is 8°

Step-by-step explanation:

2x + 62° = 5x + 38°

2x – 2x + 62° – 38° = 5x – 2x + 38° – 38°

24° = 3x

3x = 24°

3x/3 = 24°/3

x = 8°

Thus, The value of x is 8°

<u>-TheUnknownScientist 72</u>

8 0
2 years ago
What is (5 1/2 +2 3/4)-3 1/2​
user100 [1]

Answer:

answer is 119/4

Step-by-step explanation:

51/2+23/4-3/2=102+23-6/4=119/4

5 0
4 years ago
Find the value of X<br> please help!
denis23 [38]

Answer:

Step-by-step explanation:

So the first thing to do is get the number of angles inside this pentagon, which is 540 degrees. One way to do this is that you know a pentagon is formed of 3 triangles and since there are 180 degrees in a triangle, 3x180=540

Then it is algebra

540=91+125+92+(3x-5)+(4x-8)

Simplify what you can and collect like terms

540=308+3x-5+4x-8

540=308+7x-13

Then move everything over to the one side so that the variable is isolated

540-308+13=7x

245=7x

242/7=x

35=x

5 0
2 years ago
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