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1 year ago

Follow the directions to solve the system of equations by elimination.

Mathematics

1 answer:

omeli [17]1 year ago

5 0

Answer:

X= 1/2 Y= 5

Step-by-step explanation:

8x+7y=39-------------(1)--------×2

4x-14y= -68-----------(2)-------×1

16X + 14Y = 78--------(3)

4X- 14Y = -68----------(4)

Addy equation (4) and (3)

20X = 10

dividing bothsides by 20

20X/20= 10/20

X = 1/2

substitute the value of X into equation (1)

8X+7Y = 39

8(1/2)+7Y= 39

4+7Y = 39

7Y = 39-4

7Y = 35

dividing bothsides 7

7Y= 35/7

Y = 5

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Answer:

AB = 8.857 cm

Step-by-step explanation:

Here, we are given a right angle $\triangle ABC$ in which we have the following things:

$\angle A = 90 ^\circ\\\angle C = 41 ^\circ\\\text{Side }BC = 13.5 cm$

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Trigonometric functions can be helpful to find the value of Side AB here.

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2 years ago

S = ut + 12 at? u= 10 a = -2 t = Work out the value of s.

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If you would like to know which expression represents the amount of time Joe exercises, you can calculate this using the following steps:

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3 years ago

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