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
Alenkinab [10]
3 years ago
8

X2 + 4x -9 = (x + a)? +b Find the value of a and the value of b. a = b= ?

Mathematics
1 answer:
Burka [1]3 years ago
4 0

Step-by-step explanation:

x² + 4x - 9

= (x + 2)² - 13

a = 2, b = -13.

You might be interested in
On a coordinate plane, points (2, 4), (4, 8), and (5, 10) are plotted.
mario62 [17]

Step-by-step explanation:

(2, 4), (4, 8) and (5, 10) are on the line y = 2x.

Hence they line on a straight line,

The line passes through the origin, and

it shows a proportional relationship.

4 0
3 years ago
Read 2 more answers
Sphere A has a radius of 24 centimeters, and sphere B has a diameter of 42 centimeters. The radius of sphere A is
KonstantinChe [14]

Answer:

B

Step-by-step explanation:

If the diameter of sphere B is 42, that means the radius is half, so it is 21.

The question is asking what multiplied by 24 is 21, or 21 divided by 24. 21/24 can be simplified to 7/8.

5 0
3 years ago
How do you do this?
Alenkasestr [34]

Answer:

by increasing the size ez

4 0
3 years ago
Please help! need help with geometry work.
lakkis [162]

Answer:

1) Is 90° because that's what the little square in the corner means.

2) Is 60° because if you take everything to the right of the vertical line and add them up, and then subtract the total from 180° you can find the missing angle.

3) Is 30° because if you use what's below the horizontal line and do the same thing as number 4 (add the existing angles together and subtract the total from 180) you can find the missing angle.

4) Is 20° because if you add the existing angles together (40° + 90° + 30°), you'll get 160°, and since the diagonal line that's separating everything from 40° to 30° looks as though it equals 180°, you'd subtract 160° from 180° in order to get the missing angle.

5) Is also 90° because the angle across from it (1) looks to be around the same size.

I solved for each in the following order:

1, 5, 4, 3, 2.

I hope this helps. Also please let me know if I got something wrong or if you still need help :)

3 0
3 years ago
What is 0.5 + -1 1/2
lakkis [162]

-1 is your answer.........


6 0
3 years ago
Other questions:
  • Which are the coordinates of the x-intercept in the equation -4x + 5y = 20?
    13·1 answer
  • Why is scientific notation useful and how is scientific notation used in the real world ?
    5·2 answers
  • HELP NEEDED I need some help here can anyone help please?
    9·2 answers
  • Please help ASAP!!!!!!!
    11·1 answer
  • The dimensions of a CD case are 14.2cm by 12.5cm. Each case is approxiomately 1cm deep. What would be the volume of this stack o
    6·1 answer
  • an arts academy requires there to be 4 teachers for every 64 students and 3 tutors for every 33 students. how many students does
    8·2 answers
  • Help meeeeeeeeeeeeeeeeeeeeeeeeee
    7·2 answers
  • Which of the following depicts a graph of a polynomial with a positive leading coefficient?
    15·2 answers
  • Please help with this/
    10·1 answer
  • each unit square of a 3-by-3 unit-square grid is to be colored either blue or red. for each square, either color is equally like
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!