1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Darya [45]
3 years ago
13

One question is all I need help on.

Mathematics
1 answer:
natka813 [3]3 years ago
5 0
Hello,

y=x²+2x
y=3x+20

==>x²+2x=3x+20
==>x²+2x-3x-20=0
==>x²-x-20=0
==>x²-2*1/2*x+1/4-20-1/4=0
==>(x-1/2)²-81/4=0
==>(x-1/2-9/2)(x-1/2+9/2)=0
==>(x-5)(x+4)=0
==>(x=5 and y= 35 ) or (x=-4 and y=-8)


You might be interested in
Is y=x^2-6 a linear function and why
jarptica [38.1K]

Answer:

No.

Step-by-step explanation:

No, y=x²-6 is not a linear function.

This is because all linear functions have the highest exponent of 1. Anything equation that has a variable raised to a power other than 1 is not linear.

The equation provided as the highest exponent of 2. Thus, it's not linear.

From the provided graph, we can also see that this is quadratic instead of linear. The graph is a parabola instead of a line.

5 0
4 years ago
Read 2 more answers
A community center rents their hall for special events. They charge a fixed fee of $200 plus an hourly fee of $22.50. Lin has $3
Karo-lina-s [1.5K]

Answer:

No, 6 hours would cost $335, 35 over her limit of $300.

Step-by-step explanation:

she has to pay $200 plus 22.50 for every hour she rents. So, if she rents for 6 hours, she has to pay $200 + 6(22.50) or $200 + 135=335. She only has $300 so she can’t afford the event.

3 0
3 years ago
Giles is searching for a sock and discovers that he has 10 socks for every 5 pairs of shoes. If he has 20 socks, how many pairs
Norma-Jean [14]
The answer is 10 pairs of shoes.
The first ratio is 10:5. 10 socks per 5 pairs of shoes. You have 20 socks now instead of 10. You just double the ratio. 20 socks per 10 pairs of shoes. 20:10.
3 0
3 years ago
What is the slope intercept form of 2x+y=8
sweet [91]
The slope-intercept form of 2x+y=8 is y=2x-8 
7 0
4 years ago
Read 2 more answers
Distrbute (v+3) (v2+4v-5)
seropon [69]
V3+4v2-5v+3v2+12v-15
v3+7v2+7v-15
5 0
3 years ago
Other questions:
  • The volume of a cylinder with radius of 10cm and height of 15cm​
    12·1 answer
  • a consumer purchased a computer after a 15% price reduction. if x represents the computer's original price, the reduced price ca
    7·1 answer
  • 1000 millimeters equals what =
    11·1 answer
  • Problems of addition, subtraction, multiplication and division of integers for other people to solve.
    7·1 answer
  • Please this is due today.
    9·2 answers
  • Is 9x-3y=12 and 27x+9y=38 parallel or perpendicular
    9·1 answer
  • Will someone pls help asap
    7·2 answers
  • HURRY PLEASE The top and bottom of a right rectangular prism are 4 inches long and 4 inches wide. What is true about the other f
    11·1 answer
  • What?<br><br> AAeEeEeEeOOoooO<br><br><br><br> h??<br><br><br><br><br><br><br><br><br><br><br> Eeb
    12·1 answer
  • I just need help with b
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!