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sattari [20]
3 years ago
15

Helppp and explain than you

Mathematics
2 answers:
ss7ja [257]3 years ago
5 0

9514 1404 393

Answer:

  1. x = 2
  2. (-5, 4, 6)

Step-by-step explanation:

1. Substitution can work for this.

  2x +3(4x -5) = 13

  14x = 28 . . . . . add 15

  x = 2 . . . . . . . divide by 14

__

2. The equation z=6 eliminates all but the 1st and 3rd choices. Using that value in the first equation gives ...

  x + y + 6 = 5

  x + y = -1

Only the 3rd choice satisfies this equation.

  (x, y, z) = (-5, 4, 6)

Radda [10]3 years ago
3 0

Answer:

1) x = 2

Step-by-step explanation:

Hope it helps. I'll try to solve the second one too

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3 0
3 years ago
PLEASE HELP ME SOLVE!
Crank

Answer:

F(-6) = <u>2*(-6) + 1</u>

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5 0
3 years ago
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A circle is increased to have a circumference that is 4 times larger than the original. Which of the following options best desc
kogti [31]
Area of a circle is directly proportional to the square of radius of the circle while the circumference is proportional to the radius of the circle. This means that if the radius of a circle is increased x times, then its area will be increased to x^2 times the original area, and the circumference will increase to x times the original circumference.

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We can calculate exact area and circumference of a circle from its radius using the following equations:

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Where r is the radius of the circle.

I know this is a lot, sorry.
3 0
3 years ago
The length of a rectangular box is less than 2 inches more than the width. if the length is 7 inches, what is the area of the bo
kifflom [539]
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hope this helps :)
5 0
2 years ago
Read 2 more answers
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