MATHEMATICS MIDDLE SCHOOL

Solve each system of linear equations by multiplying { -2x + 2y = 2
{ -4x + 7y = 16

Answers

Answer 1
Answer:

Answer:

x = 3 \n y = 4

Step-by-step explanation:

x = - 1 + y \n - 4x + 7y = 16 \n \n - 4( - 1 + y) + 7y = 16 \n \n y = 4 \n \n x = - 1 + 4 \n \n x = 3

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40 divided by 13.6 ?

Answers

2.94117647059

13.6 can go into 40 2.94117647059 times.

The answer is 2.94117647 in decimal form

What is the surface area of the prism?A. 140 in2
B. 144 in2
C. 420 in2
D. 288 in2

Answers

you have to find the areas of the triangle faces and rectangular faces, so…
the triangles' areas are:
6 • 16 = 96
the rectangles on the sides have areas of:
10 • 9 • 2 = 180
and the base rectangle has an area of
16 • 9 = 144
the surface area is 96+180+144 which is 420 in2.

Ingrid walked her dog and washed her car . She spent 3 times as much time washing her car as she did walking her dog. it took Ingrid 1 1/2 hours to wash her car .How long did it take Ingrid ti walk her dog ?

Answers

To figure out long it took for Ingrid to walk her dog,multiply 3*1 and 1/2 or 3*1.5 to get 4.5 hours or 4 and 1/2 hours.

What is the slope??????

Answers

slope is how much a line goes up in ratio to how much the line goes to the right
(rise) / (run)
(y2 - y1) / (x2 - x1) when given points (x1, y1) and (x2, y2)
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Find the values of x and y that make these triangles congruent by the HL Theorem.

Answers

Answer:

The answer is X=6 & Y=3 ......

Mrs Smith has 12 times as many markers as color pencils the total number of markers and colored pencils is 78 how many markers does Mrs Smith have

Answers

x = markers
y = colored pencils

12x = y

x= 72
y = 6

Okay, so what I did was divide 78 by 12 (to find the number of colored pencils) which gave me 6.5. You can't have half a colored pencil, so I rounded the number down to get 6. To find the number of markers, I multiplied 12 and 6 (12x = 6) which gave me 72. To check my answer I added the two amounts, 72 + 6, which gave me 78.
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