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
fiasKO [112]
2 years ago
9

Solve the following system of equations algebraically: Y = x^2 + 8x – 9 Y = 2x + 7

Mathematics
1 answer:
julia-pushkina [17]2 years ago
3 0
Use simultaneous equations:
2x + 7 = x^2 + 8x - 9
7 = x^2 + 6x - 9
16 = x^2 + 6x
+ or - 4 = 7x
answer is
-4/7 or 4/7
You might be interested in
Need help, “Find the volume of each rectangular prism. Round to the nearest tenth if necessary.”
mario62 [17]


1) We know that volume= base area x height, so 306.52= 19.4 x height.

To find the height you have to divide 306.52/19.4 which would give you the height. The height is 15.8m.

8 0
3 years ago
Is mass proportional to the force of gravity??? <br> PLZZ HELP WILL MARK THE BRAINLIEST
garri49 [273]
Noooo definitely not.
5 0
3 years ago
Read 2 more answers
I'm really struggling with this question. Please help!
gavmur [86]
I got 23 u might want to check it tho
3 0
3 years ago
Please help me need to revise for a testtt!!!!
LUCKY_DIMON [66]
Remember you can add like terms exg, 3y+4y=7y 3y^2+4y^2=7y^2, but cannot add 3y^2 and 4y, or 3 and 4y so

3a+2w-5a-9w
group like trems
3a-5a+2w-9w
subtract
-2a-7w


3y^2+2w^2-y^2-w^2
group like terms (think of w^2 and y^2 as 1w^2 and 1y^2)
3y^2-y^2+2w^2-w^2
subtract
2y^2+w^2

2x+2x=4x
3 0
2 years ago
Read 2 more answers
Round to the nearest hundred 5,503,569
Whitepunk [10]
If the next digit, which in this case is in the tens place, is a 5 or above then we know to round up.

Your answer is 5,503,600.

Hope this helps!
5 0
2 years ago
Other questions:
  • V=s^2+ 1/2sh, solve for H.
    7·1 answer
  • The sum of two numbers is 9. And the sum of their reciprocals is 1/2.find the numbers
    12·1 answer
  • A baseball has a 45 cm diameter. What is the volume of the contents of the ball?
    14·1 answer
  • A magazine sales person earns $250 a week plus a commission of of the total sales. If the total sales for the week were $693, wh
    10·1 answer
  • I am a multiple of 12 . i am between 40 and 50 . who could i be​
    7·2 answers
  • Multiplying a measure<br> by a scale to produce a<br> reduced or enlarged<br> measure
    6·1 answer
  • Is quadrilateral DEFG a parallelogram? Why or why not?
    6·1 answer
  • Part A. What is the unit rate in dollars per hour for each company?
    13·1 answer
  • Y = 3(x-2)^2 + 5
    15·1 answer
  • Find the distance between points (3,6) and (9,2)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!