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2 years ago

Solve the system of equations and choose the correct ordered pair.

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

7 0

Multiply first equation by 8,
24x + 40y = 352
Multiply second equation by 3,
24x - 21y = -75

Now, subtract second from 1st,
61y = 427
y = 427/61
y = 7

Substitute it in very first equation,
3x + 5(7) = 44
3x = 44 - 35
x = 9 / 3
x =3

In short, Your Answer would be Option D) (3, 7)

Hope this helps!

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Find the total surface area of the net below.

Solnce55 [7]

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Step-by-step explanation:

b = 3 m

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p = 3+ 2.6 +2.6= 8.2

H = 9 m

SA = bh + pH

= 3 × 2.6 + 8.2 ×9

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= 81.6

Therefore,

SA = 81.6 square m

Total surface area of the triangular prism is 81.6 square m.

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Step-by-step explanation:

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2 years ago

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3 years ago

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Sveta_85 [38]

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3 years ago

Find the length of the rectangle if the perimeter is 244 yards the length is 18 less than three times the width?

Mariana [72]

Answer:

The Length of rectangle is 87 yards.

Step-by-step explanation:

Let width = w

Length = 3w-18

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We need to find length of rectangle.

First we need to find value of w

The formula used will be: $Perimeter=2(length+width)$

Putting values and finding w

$Perimeter=2(length+width)\\244=2(3w-18+w)\\244=2(4w-18)\\244=8w-36\\244+36=8w\\8w=280\\w=\frac{280}{8}\\w=35$

So, w= 35

The width of rectangle w = 35 yards

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3 years ago