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vagabundo [1.1K]
3 years ago
7

Evaluate the expression when x=2 . -3x+1.5+2.5x-4.5+8x

Mathematics
1 answer:
dlinn [17]3 years ago
3 0

Answer: 12

Step-by-step explanation:

For this problem, all you have to do is plug in x=2 into all the x you see.

-3(2)+1.5+2.5(2)-4.5+8(2)

-6+1.5+5-4.5+16=12

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2x+4y=36 6x+2y=3 Ordered pair
pishuonlain [190]

Answer:

Step-by-step explanation:

2x+4y=36 - equation 1

6x+2y=3 - equation 2

from equation 1,

2x + 4y = 36

2x = 36 - 4y

x = 36/2 - 4y/2

x= 18 - 2y - equation 3

insert equation 3 into equation 2

then, 6x+2y=3

therefore, 6(18 - 2y) + 2y = 3

               108 - 12y + 2y = 3

              108 -10y = 3

              108 - 3 = 10y

               105 = 10y

               y = 105/10

               y = 10.5

in solving for x, insert    y = 10.5 into equation 1

therefore, 2x+4y=36

                 2x + 4 (10.5) = 36

                 2x + 42 = 36

                2x = 36 - 42

                2x = -6

                x = -6/2

 therefore x= -3

Ordered pair, x= -3 and y = 10.5

5 0
3 years ago
Identify the domain of an image that has been rotated 270 degrees counter-clockwise
tensa zangetsu [6.8K]

Answer:

A, (4,-3), (1, -1), (7,-6)

Step-by-step explanation:

f(x, y) = (y, -x) there is a 90° clockwise or 270° counterclockwise rotation

8 0
3 years ago
14. The diagonals of square ABCD intersect at E. If AE = 2, find the perimeter of ABCD.
lutik1710 [3]

Answer:

B, 8\sqrt{2}

Step-by-step explanation:

Diagonals of a square are congruent so AC= 4

using pythagorean theorem we can then do x^{2} +x^{2}=4^{2}

2x^{2} = 16\\x^{2} =8\\x=\sqrt{8} \\x=2\sqrt{2}

Then for perimeter we times the 2\sqrt{2} by 4 and get

8\sqrt{2}

Hope this helps and please mark brainliest!!

8 0
3 years ago
Consider the following function. f(x) = (x + 5)2/3 (a) Find the critical numbers of f. (Enter your answers as a comma-separated
Olin [163]

Answer:

See explaination

Step-by-step explanation:

Please kindly check attachment for detailed and step by step solution of the given problem.

3 0
3 years ago
12. Which equation has no solution?
alexandr1967 [171]
B 24a-22=-4(1-6a) has no solution
6 0
3 years ago
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