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
makkiz [27]
2 years ago
15

If f(x)=x^2-45, and f(2a)= -20, what is the value of a

Mathematics
1 answer:
Klio2033 [76]2 years ago
5 0
Hope this helps!!! :)

You might be interested in
Solve for x: x/5 = 75
Ainat [17]

Answer:

x=15

Step-by-step explanation:

75/5=x  15x5=75

6 0
2 years ago
Read 2 more answers
What equations are equivalent to -4+(4+5)?
Igoryamba

Answer:

-4 + 9

9- 4

Step-by-step explanation:

4 0
2 years ago
Is 46 greater or less than -79
Alona [7]

Answer:

46 is greater than -79

6 0
2 years ago
Read 2 more answers
1. A crash repair bill comes to $1380.00. How much is 10% of
SpyIntel [72]

Answer:

1. 10% of the bill is $138. The final bill once 10% is taken off is $1242.

2. 20% of the total is $34.10. The final total once the 20% is taken off is $136.4

Step-by-step explanation:

1. A crash repair bill comes to $1380.00. How much is 10% of the bill? What is the final bill once 10% is taken off?

To find how much is 10% of the bill, we multiply the bill by 0.1

0.1*1380 = 138

10% of the bill is $138.

To find the final bill, we subtract the initial bill by 10%.

1380 - 138 = 1242

The final bill once 10% is taken off is $1242.

2. A person buys a new fan belt, a new alternator, and a new water pump for their car. The total comes to $170.50. What is 20% of the total? How much is the final total once the 20% is taken off?

Same logic as above.

0.2*170.50 = 34.1

20% of the total is $34.10.

170.50 - 34.1 = 136.4

The final total once the 20% is taken off is $136.4

8 0
2 years ago
An athlete eats 0.4kg of protein per week while training. How much protein will she eat during 6 weeks of training?
kolezko [41]
0.4kg  per week.     so 0.4kg  x  6 weeks is 2.4kgs
7 0
3 years ago
Other questions:
  • A candidate for class president received at least 4 times as many votes as his opponent did. If the winning candidate received a
    15·1 answer
  • Enter an algebraic equation for the sentence. Use x as your variable.
    13·1 answer
  • Solve for a.
    11·2 answers
  • Use the 3 trig ratios to find each unknown side length. Round all answers to 1 decimal
    5·1 answer
  • Express 20cm as a percentage of 3m. <br> give your answer as a mixed number
    15·1 answer
  • If 14 gallon of paint covers 1/12 of a wall, then how many quarts of paint are needed for the entire wall?
    11·2 answers
  • .
    5·1 answer
  • HELP ILL MARK AS BRAINLIEST what’s the surface area?
    6·1 answer
  • PLS HELP ME PLS ITS DUE​
    7·1 answer
  • Last week you worked 40 hours, and earned $470.<br><br> What is your hourly pay rate?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!