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alexandr402 [8]
3 years ago
15

Solve the system of equations using substitution: 6x – y = –15 X + 2y = 17

Mathematics
1 answer:
defon3 years ago
3 0

Answer:

x = -1

y = 9

Step-by-step explanation:

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8a – 6+2=-7+ 7a solve the
Kisachek [45]

A = -3

8a-6+2=-7+7a

Add 2 to -6

8a-4=-7+7a

Subtract 7a from 8a

Add 4 to -7

Then you get

A= -3

7 0
3 years ago
Help please can’t find this anywhere
givi [52]

9514 1404 393

Answer:

  x = 6

Step-by-step explanation:

You can actually work out the answer yourself.

The two angles shown have the total measure 168°, so the unmarked one is ...

  168° -100° = 68°

That is ∠WXZ, so we know ...

  68° = (5x +38)°

  30 = 5x . . . . . . . . . . divide by °, subtract 38

  6 = x . . . . . . . . . . . . .divide by 5

5 0
3 years ago
4) If the area of a square is 48cm²,<br> What is the length of each side?<br> Simplify your answer.
Talja [164]

Answer:

4 sqrt(3) cm

Step-by-step explanation:

The area of a square is

A = s^2  where s is the side length

48 = s^2

Take the square root of each side

sqrt(48) = sqrt(s)

sqrt(16*3) = s

4 sqrt(3) =s

5 0
3 years ago
Read 2 more answers
Last week, the daily low temperatures for a city, in degrees Celsius, were 5, 8, 6, 5, 10, 7, and 1. What was the average low te
ludmilkaskok [199]
The average low temperature would be 5+8+6+5+10+7+1 all divided by 7, so the answer is 6° celsius.
3 0
3 years ago
I need the answer pls
pogonyaev

Answer:

314 inches³

Step-by-step explanation:

The area of a cone is πr²h/3. We need to find the height and radius of the cone. The height is 12 inches. radius * 2 = diameter.

Radius * 2 = Diameter
/2                  /2

Radius  = 1/2* Diameter
Radius = 5 inches

We substitute it in:

3.14 * 5² * 12/3:

3.14*25*4

314 inches³

8 0
2 years ago
Read 2 more answers
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