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jeka57 [31]
2 years ago
7

Solve the system with substitution 72 +10y = 36 y = 2x + 9

Mathematics
1 answer:
mr_godi [17]2 years ago
8 0

Answer:

x= -63 y= -117

Step-by-step explanation:

72+10(2x+9)=36

72+20x+90=36

162+20x=36

20x=-126

×= -63

y= 2(-63)+9

y=-126+9

y= -117

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A rectangles length is 2 meters greater than its width if the e perimeter is greater than 112 what is the rectangles possible wi
pishuonlain [190]

Answer:

Step-by-step explanation:

Perimeter of a rectangle = 2(L +W)        

Given L = W + 2      and the perimeter is greater than 112 meters?

  P rect    <   2(L +W)        L = W + 2

  P rect    <   2(W + 2 +W)

                <   2(2W+2)

  112         <     4W + 4        solve for W

(112 - 4)/4  <   (4W +4 - 4)/4              

108/4       <   (4W + 0)/4

       27     <    W              

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3 years ago
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Total surface area is 152 cm
4 0
3 years ago
URGENT!!!!!<br> With workings
Aneli [31]
There’s probably an easier way to do it like with the equation to find the area of a trapezoid but i did it this way bc it’s easier for me

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THE ANSWER IS 68.9 CM

6 0
3 years ago
Read 2 more answers
I need help figuring out the first step would it be adding up the like terms? help
Pie

Answer: Add like terms

Step-by-step explanation:

For example, you would add 6x and 5x to make 11x, but there other two numbers you would leave alone.

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