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Murrr4er [49]
3 years ago
14

Can someone help me w this question plz.

Mathematics
1 answer:
quester [9]3 years ago
6 0
For any solution it follows that y=y so:

x^2+2x=3x+20  subtract 3x from both sides

x^2-x=20  subtract 20 from both sides

x^2-x-20=0  factor...

x^2-5x+4x-20=0

x(x-5)+4(x-5)=0

(x+4)(x-5)=0

x=-4 and 5  now to find the corresponding y values I'll use y=x^2+2x

y(-4)=16-8=8 and y(5)=25+10=35  so the two solutions are the points:

(-4, 8) and (5, 35)
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PLEASE ANSWER I WILL GIVE BRAINLIEST
Pachacha [2.7K]
We know that since a diameter splits a circle in half, the arcs EF, FG, and GH must add up to 180°, half the measure of a full circle. We can then use the arc addition property to create an equation using the information we know. This equation would be (10x + 8) + 67 + 11x = 180. This can be simplified to x = 5. Therefore, the value of x is 5. Now, we can simply plug in the value of x into the expressions for EF and GH. This means that the measure of EF is 58° and the measure of GH is 55°.

Hope this helps!
3 0
3 years ago
X+y=5 <br> 3x-4y=8 <br> please i need the steps
grandymaker [24]

Answer:

x + y = 5

<u>3x - 4y = 8</u><u> </u><u> </u><u> </u>

3x + 3y = 15

<u>3x - 4y = 8 </u>-

7y = 7

y = 1

x + y = 5

x + 1 = 5

x = 4

x = 4

y = 1

Hope it helps!

6 0
2 years ago
What is 25,000,000 x 25,0000 = what
romanna [79]

Answer: 6.25^12

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The points (a,5) and (9,b) are on the circle x^2+ y^2= 125.
Aneli [31]

Answer:

a = 10

b = 6.633

Step-by-step explanation:

x²+ y²= 125.

In this equation, the value of x and y represent the coordinates of x and y respectively of point on which the circle passes.

<u>(a,5)</u>

x²+ y²= 125

a² + 5² = 125

a² + 25 = 125

a² = 125-25

a² =  100

a = √100 = 10

(9,b)

x²+ y²= 125

9² + b² = 125

b² 125 - 81

b² = 44

b = √44 = 6.633

5 0
2 years ago
I need answer To number 32-34 i need This done by Tuesday
BaLLatris [955]

34 is Y=56 that why he stay with 101 at the end.

4 0
3 years ago
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