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3241004551 [841]
3 years ago
8

Solve by using elimination 3x-2y=1. 8x+3y=2

Mathematics
1 answer:
Kitty [74]3 years ago
3 0
Elminate the y's
multiiply first euation by 3 and multiply 2nd equation by 2 and ad them

9x-6y=3
<u>16x+6y=4 +</u>
25x+0y=7

25x=7
divide both sides by 25
x=7/25
sub back

3x-2y=1
3(7/25)-2y=1
21/25-2y=1
note: 1=25/25
minus 21/25 fromboth sides
-2y=4/25
divide both sides by -2 (or times -1/2)
y=4/-50
y=-2/25

x=7/25
y=-2/25

(-2/25,7/25)
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Think about all of the ways in which a circle and a parabola can intersect.
xeze [42]

There will be four ways a circle and a parabola can intersect because the solution of the quartic equation will be 4.

<h3>What is a circle?</h3>

It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)

We have a circle and a parabola:

As we know the standard form of a circle:

\rm (x-h)^2 +(y-k)^2=r^2

The standard form of the parabola:

\rm y = a(x-h)^2+k  

If we plug the value of y from the parabola equation in the circle equation, we get a quartic equation(4th order equation)

The solution of the quartic equation will be 4.

Thus, there will be four ways a circle and a parabola can intersect because the solution of the quartic equation will be 4.

Learn more about circle here:

brainly.com/question/11833983

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7 0
2 years ago
Look at the arrows in the drawings below. Indicate whether the arrows are parallel, perpendicular, or neither.
IceJOKER [234]

Answer:

In A and D the arrows are perpendicular, in B they are parallel and in C they are neither parallel nor perpendicular.

Step-by-step explanation:

3 0
3 years ago
What is 4 3/7 as a decimal.
Ymorist [56]
4.428571
I know because I googled it
4 0
3 years ago
If you can answer this, please help !
PolarNik [594]

Answer:

the total of angle's in traingle is 180

so 85+53+c=180

c=180-138

c=42

8 0
3 years ago
Read 2 more answers
17/21 ÷ 3 4/7 what us the estimated answer and steps to divide and find the answer
r-ruslan [8.4K]
Convert 3 4/7 into an improper fraction: 25/7
17/21 divided by 25/7

Dividing by a fraction is the same as multiplying by it's reciprocal.
17/21*7/25

Simplify:
17/3*1/25

Multiply across:
17/75
7 0
3 years ago
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