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3 years ago

7

Ifyou are asked to solve a system ofequations in which there is no linear equation to start with, you can sometimes begin by iso

lating and substituting a variable that is squared in both equations.

1 answer:

maw [93]3 years ago

7 0

What you typped is correct

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Evaluate 3x (2+6) divide 4 -2

kondaur [170]

Answer:

4

Step-by-step explanation:

Brackets always mean "DO THIS FIRST!!!"

2+6 = 8

Then, do 3 x 8. That is 24.

24 divided by 4 is 6.

6 - 2 is 4!

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3 years ago

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kirill [66]

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3 years ago

What are the values of the variables in the triangle below?

harkovskaia [24]

Answer:

D) x=9 ; y=3√(3)

Step-by-step explanation:

$Sin(30)=\cfrac{y}{6\sqrt{3} }$

$\cfrac{18y}{6\sqrt{3}}=18\sin \left(30^{\circ \:}\right)$

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$Cos(30)=\cfrac{x}{6\sqrt{3} }$

$\cfrac{18x}{6\sqrt{3}}=18\cos \left(30^{\circ \:}\right)$

$\sqrt{3}x=9\sqrt{3}$

$\cfrac{\sqrt{3}x}{\sqrt{3}}=\cfrac{9\sqrt{3}}{\sqrt{3}}$

$x=9$

Therefore, x=9 and y=3√(3)

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2 years ago

2/5 + 3/4 =<br> Please Give me The Answer

Anna35 [415]

Answer:

1 3/20

Step-by-step explanation:

2/5 = 8/20

3/4 = 15/20

8/20+15/20 = 13/20

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3 years ago

Read 2 more answers