All categories

3 years ago

PLEASE SOLVE I DESPERATELY NEED HELP!!! Solve the system of equations by graphing.

Mathematics

1 answer:

Anon25 [30]3 years ago

4 0

Answer:

The steps will be :

1. Draw both equations into the graph.

2. Look for the coordinates where they intersect(curve and line crosses each other). So the coordinates will be (-2,0) and (3,5).

3. The x-value of the coordinates will the solution to the equations.

4. Therefore, the answer will be -2 and 3.

You might be interested in

Describe the association you see between the number of quartz purchased and the price per quart. Explain.

Scilla [17]

Number of quartz implies how much quartz you want .It can be 2 , 3 a hundred, a thousand..(Quantitative).

the price per quart is the price of a single quartz that is only for 1 piece (only)

8 0

3 years ago

Four friends earned $5.20 for washing a car. They shared the money equally. How much did each friend get?

horsena [70]

Each friend got $1.30 I hope this helps!!!!

5 0

3 years ago

Read 2 more answers

Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

${r}^{2} = {x}^{2} + {y}^{2}$

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

4 0

3 years ago

what is the equation of the line that passes through the points (-2,1) and (1,10)? a) 3x-y=-7 b)3x-y=-5 c)3x-y=5 d)x 3y=-5

Ber [7]

The answer is a.
Substitute (-2,1) and (1,10) into each answer. Only a is correct because you will get -7 from both points.

8 0

3 years ago

4. 65% of 80 is what number?

SIZIF [17.4K]

Answer:3.72

Step-by-step explanation:

80x.465 is the equation

5 0

3 years ago

Read 2 more answers