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
solong [7]
3 years ago
6

I need question a and b done pls help

Mathematics
2 answers:
FrozenT [24]3 years ago
8 0

Answer:

A. 5

B. 12

Step-by-step explanation:

What you do is you substitute -2 into the a and the 3 into the b.

a. 3(-2)^2-5(3)+8                       b. 2/3(3)-5(-2)

3(4)-15+8                                   2-(-10)

12-15+8                                      12 is your answer.

-3+8

5 is your answer.

CaHeK987 [17]3 years ago
4 0

For (a)

3a^2 - 5b + 8

Let a be -2 and b be 3.

3(-2)^2 - 5(3) + 8

3(4) - 15 + 8

12 - 15 + 8

-3 + 8

Answer: 5

For (b)

Let a be -2

Let b be 3

(2/3)b - 5a

(2/3)(3) - 5(-2)

2 + 10

Answer: 12

Did you follow?

You might be interested in
Brennan has already run 16 miles on his own, and he expects to run 3 miles during each track practice. How many track practices
pentagon [3]

Answer:

It would take Brennan 4 track practice runs.

Step-by-step explanation:

He has already run 16 miles and needs to run 28 in total. If we are counting the 16 in the 28 miles, he would need to run only 12 more to reach his goal. And if he runs 3 miles a run, it would take him about 4 runs to finish his 28-mile goal.

(28-16=12 and 12/3=4)

8 0
3 years ago
Read 2 more answers
What's 175379 × 12864999÷ 187367= ?
larisa86 [58]
The answer will be 120416857.5 hope this helped :)
8 0
3 years ago
Read 2 more answers
It took bob 55min to clean the garage. How many seconds did it take bob.
Setler79 [48]
60x55= 3300 there are 60 seconds in a minute and there are 55 minutes so you simply multiply the seconds by the minutes
5 0
3 years ago
Read 2 more answers
Which of the sets of ordered pairs represents a function? A={(1,-2) (3,-5) (5,2) (7,5)}
FrozenT [24]

Answer: do

Step-by-step explanation:

3 0
3 years ago
Given h(x)= -4+5,find the value of h(-3)
Alisiya [41]

Answer:

1/h

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • 45 1/2 as a fraction in its simplest form
    15·1 answer
  • In ∆ABC, m∠ACB = 90°, m∠A = 40°, and D ∈ AB such that CD is perpendicular to side AB. Find m∠DBC and m∠BCD.
    12·1 answer
  • Kyle has a notebook for each of his 5 classes. He puts 6 stickers on each notebooks.there are 10 stickers on each sheet.how many
    7·1 answer
  • The distance from Earth to the moon is 2.4 × 105 miles. The distance from Earth to the sun is 9.3 × 107 miles.
    11·1 answer
  • Mopeds (small motorcycles with an engine capacity below 50cm3) are very popular in Europe because of their mobility, ease of ope
    9·1 answer
  • Please help me 7th grade math
    15·1 answer
  • L
    9·1 answer
  • 2m divided by 3/9; m = 3/2
    5·1 answer
  • The athletic department manager purchased a total of 52 footballs and soccer balls. Each football cost $23.53, and each soccer b
    15·1 answer
  • Which equation is true if the perimeter of the rectangle is 60?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!