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NARA [144]
3 years ago
10

Find the solution set for this equation. a2 + a=0 Separate the two values with a comma.

Mathematics
1 answer:
ira [324]3 years ago
6 0

Answer:

a = 0,-1

Step-by-step explanation:

a^2 + a=0

Factor out an a

a(a+1) =0

Using the zero product property

a=0   a+1 =0

a=0  a= -1

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Please help me ASAP!!
choli [55]

Answer:

r = -4

Step-by-step explanation:

If M is the midpoint of DE, that would mean that the distance from M to D and M to E would be the same.

This creates the equation 1-8r=13-5r.

Now it's just simple algebra.

You add 8r to both sides, creating 1=13+3r. Then, you subtract 13 from both sides, getting 3r=-12. Dividing both sides by 3 and solving for r, you get r=-4.

Checking our answer, you see that 1-8(-4)=1-(-32)=1+32=33, and 13-5(-4)=13-(-20)=13+20=33.

8 0
3 years ago
You deposit $400in an account. The account earns $18 simple interest in 9 months. What is the annual interest rate?
Masteriza [31]

Answer:

.5

Step-by-step explanation:

if you put 400 in an account and for nine months with 0.5 interest rate you would get 418.41 so 0.5 is the answer

7 0
2 years ago
You are spreading fertilizer on a golf course at the rate of 40 pounds per 10,000 square feet. If the course is 320 acres, how m
NemiM [27]
1 Acre = 43560 square feet 
1 Ton = 2000 pounds

320 Acres = 320 * 43560 square feet = 13939200 = <span>1393.92 * 10,000

</span>1393.92 *40 pounds needed = 55756.8
55756.8 / 2000= <span>27.8784 </span>
5 0
3 years ago
Read 2 more answers
2<br> 138°<br> 1<br> What is m 22?
yulyashka [42]

Answer:

Measure of angle 2 is 42.

If you are satisfied with the results then plz make me genius.

3 0
3 years ago
Create an equation and solve. If Jennifer doubled the money that she has in her account now and then took out $50, she would hav
emmasim [6.3K]

Answer:

Answer = $349 before buying the bike

Step-by-step explanation:

X x 2 - 50 = 299

50+299= 349

X x 2 = 349 x 2

2x =349 x 2

2x = 698

698 divided by 2 = <em><u>349</u></em>

3 0
3 years ago
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