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hammer [34]
3 years ago
7

PLEASE PLEASE PLEASE HELP!!

Mathematics
1 answer:
irga5000 [103]3 years ago
7 0
  9            a
------  =  -----
  a            5

a^2 = 45 

a = 3<span>√5
</span>
  4            b
------  =  -----
  b            5

b^2 = 20

b = 2√5

answer: 

a = 3√5
b = 2√5

hope it helps
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Show work please! I don't understand how to get this answer! I will give brainliest to the best answer!
Marina86 [1]

Answer:

(x,y,z) = (2,-2,1)

Step-by-step explanation:

Three equations with three variables are given. Take two equations at a time to eliminate one variable.

                      x + y - z = -1                       .....(1)

                   4x -3y + 2z = 16                   .....(2)

                    2x - 2y - 3z = 5                   ......(3)

Solve (1) and (3) to eliminate z.

To do that multiply (1) by 2 and add (1) and (2). We get:

                        4x - 5z = 3                       ......(4)

Now, solve (2) and (3) and subtract them. We get:

                        2x + 13z = 17                    ......(5)

Solve (4) and (5). Multiply (5) by 2 and subtract. We get:

                                        z  = 1

Substituting z = 1, in (4) we get:  x = 2.

Now to find y, substitute values of x and y in (1).

⇒ x + y - z = -1 ⇒ 2 + y - 1 = -1

⇒ y = -2

∴ Values of (x, y, z) = (2, -2, 1).

4 0
3 years ago
Which of the following is the equation of a circle that has a radius of 2.5 and its center at (4, -3)?
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The answer should be:

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hope this helped!
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andrew11 [14]
A. 36 is your answer

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coefficient is the number in front of the variable. In the case of 36Q, it is 36

hope this helps
3 0
3 years ago
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Lena [83]
Shifted up
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Answer:

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