2 years ago

What are the solutions for the following system of equations?

Mathematics

1 answer:

mario62 [17]2 years ago

8 0

We will use graphical way to solve these

3x²+4y-21=0
4x²+y=10

Graph both

The solutions are

(±1.209,4.154)

None of the above

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Y = 2x <br> x + y = −6<br> the answer should be like this (x,y) or ( , )

melisa1 [442]

Answer:

(-2, -4)

Step-by-step explanation:

Given:

The system of equations to solve is given as:

$y=2x\\\\x+y=-6$

In order to solve this system of linear equations, we use substitution method.

In substitution method, we substitute the value of any one variable in the other equation.

So, we substitute the value of 'y' from first equation in the second equation.

This gives,

$x+2x=-6\\\\3x=-6$

Dividing both sides by 3, we get:

$\frac{3x}{3}=\frac{-6}{3}\\\\x=-2$

Now, $y=2x=2\times -2=-4$

Therefore, the solution is (-2, -4)

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4 years ago

∠A and ∠B are vertical angles. If m∠A=(7x-20)° and m∠B=(6x-1)°, find the measure of ∠A. (Just type answer as a number.)

WINSTONCH [101]

Answer:

x=19 so ∠A=113

Step-by-step explanation:

6 0

3 years ago

In the diagram shown, jmf is and exterior angle of triangle jmk. Select all of the remote interior angles of jmf

Rainbow [258]

I’m not to sure because the picture is blurry

8 0

3 years ago

Question #7

Sever21 [200]

Answer:

The area is 56.7 square inches

Step-by-step explanation:

Given

See attachment for corner shelf

Required

The area

The corner shelf is a quadrant with radius;

$r = 8.5in$

The area of a quadrant is:

$Area = \frac{\pi r^2}{4}$

So, the area of the corner shelf is:

$Area = \frac{\pi * 8.5^2}{4}$

$Area = \frac{\pi * 72.25}{4}$

$Area = \pi * 18.0625$

Take $\pi$ as 3.14

$Area = 3.14 * 18.0625$

$Area = 56.7$ -- approximated

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3 years ago

Jennifer and Jacob took 3h5min to decorate the Christmas tree.they took 1h55min longer to decorate the Christmas tree than to wr

stiks02 [169]

Answer:

5 hours

Step-by-step explanation:

3h5min+1h55min=5hours

4 0

3 years ago