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
lesya692 [45]
3 years ago
11

Solve for a a² + 7a - 8 = 0

Mathematics
1 answer:
masya89 [10]3 years ago
5 0

Answer:

a=-8

Step-by-step explanation:

You might be interested in
What is the factored form of _________?
enyata [817]

Answer:

C

Step-by-step explanation:

The expression given is a difference of cubes and factors as

a³ - b³ = (a - b)(a² + ab + b²)

8x^{24} = (2x^{8})³ ⇒ a = 2x^{8}

27y^{6} = (3y²)³ ⇒ b = 3y²

Hence 2 factors are

(2x^{8} - 3y²) and

((2x^{8})² + (2x^{8} × 3y²) + (3y²)²)

= (4x^{16} + 6x^{8}y² + 9y^{4})

Hence the factored form of the expression is C

4 0
3 years ago
Yesterday noah ran 2 1/2 miles in 3/5 hour. Emily ran 3 3/4 miles in 5/6 hour. Anna ran 3 1/2 miles in 3/4 hour how fast in mile
Dmitry_Shevchenko [17]

Answer:

Step-by-step explanation:

To calculate the speed of each one we proceed as follows:

speed=distance/time

a] Noah's speed:

distance=2.5 miles

time=3/5 hours

speed=(2 1/2)/(3/5)

=(5/2)/(3/5)

=5/2×5/3

=25/6

=4 1/6 mi/hr

Emily's speed

distance=3 3/4 miles

time=5/6 hour

thus

speed=(3 3/4)/(5/6)

=15/4)/(5/6)

=15/4×6/5

=4 1/2 mi/hr

Anna's speed:

distance=3 1/3 miles

time=3/5

speed=(3 1/3)/(3/5

=(10/3)/(3/5)

=10/3×5/3

=5 5/9 mi/hr

Anna was the fastest

6 0
2 years ago
Read 2 more answers
What is the probability of PICKING A RED CHALK, if there red,green,blue,orange,and white chalks (TWO EACH) in a basket ?
Zepler [3.9K]

Answer:

2/10   = 1/5.

Step-by-step explanation:

There are 2 reds in 10 chALKS.

4 0
3 years ago
Read 2 more answers
Suppose the radius of a circle is 5.what is its diameter
Gnom [1K]
The diameter would be twice 5, or 10
8 0
3 years ago
Read 2 more answers
HELP ME WITH THIS PLEASE. THANK YOU
lesya [120]

Answer:

I think it's 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Barrett purchased a piece of sandpaper for his electric sander, as shown above. The radius of the sandpaper is 2.5 inches.
    14·2 answers
  • Choose the correct solution and graph for the inequality.
    13·1 answer
  • Simplify and multiply
    5·2 answers
  • You surveyed 112 students and found out that 14 went to the movies last week-
    9·1 answer
  • Which measurement is equivalent to 2.34 m??
    15·1 answer
  • How to do word problems
    5·2 answers
  • G e o m e t r y
    13·1 answer
  • Can you help me solve it​
    9·1 answer
  • Omar, Hala and Lujain got paid a total of $240 for cleaning neighborhood cars. They split the money in the ratio of 5: 9: 10. Wh
    7·1 answer
  • 6. Five more than eight times a number is greater than four less than
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!