3 years ago

What is the solution to the system of equations below?

Mathematics

1 answer:

AURORKA [14]3 years ago

5 0

Answer:

(20, -12)

Step-by-step explanation:

it is (20, -12)

-(3/4)x+3=-12

x=20

-3/4(20)+3=-12

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In ΔVWX, w = 780 cm, ∠V=21° and ∠W=146°. Find the length of x, to the nearest 10th of a centimeter.

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Complete Question

In ΔVWX, w = 780 cm, ∠X =21° and ∠W=146°. Find the length of x, to the nearest 10th of a centimeter.

Answer:

499.9cm

Step-by-step explanation:

We solve for length x using the Sine rule

w/ sin W = x /sin X

Cross Multiply

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x = w × sin X/ sin W

x = 780 × sin 21°/ sin 146°

x = 499.88 cm

Approximately to nearest tenth = 499.9cm

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What number is represented by −3x²+√2x+1/2 when x=√2?

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Answer:

at x = $\sqrt{2}$ , $-3x^{2} + \sqrt{2}x + \frac{1}{2}$ = -3.5

Step-by-step explanation:

The given equation is $-3x^{2} + \sqrt{2}x + \frac{1}{2}$

Now, substitute the value of x = $\sqrt{2}$ in the above equation.

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