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
Aleksandr-060686 [28]
3 years ago
5

From the sum of 3a²-a-3 and 2a-9,subtract a²-3a-7

Mathematics
1 answer:
ANEK [815]3 years ago
8 0
The sum of 3a²-a-3 and 2a-9 is 3a²+a-12

3a²+a-12 - (a²-3a-7) = 3a²+a-12 - a² + 3a + 7 = 

2a² +4a - 5
You might be interested in
Katrina is building a deck. She cuts 3 lengths of wood from a 72-inch board. The first length is inches. The second length is in
kap26 [50]
Rewriting the question, the given lengths that were cut from the board were 30 3/4 inches, 12 1/4 inches, and 16 1/4 inches. To obtain the remaining length of the board, all of the measurements cut are to be added and subtracted from 72 inches. This is shown below:

30 3/4 + 12 1/4 + 16 1/4 = 237/4 = 59.25 inches.

Remaining length of board = 72 - 59.25 = 12.75 inches.

Therefore, there will be 12.75 inches remaining of the board.
8 0
3 years ago
Read 2 more answers
987mm is equal to how many cm (show work)
serg [7]
1 cm = 10 mm
? cm = 987 mm

987/10 = ? cm = 98.7 cm.

There are 98.7 cm in 987 mm.
5 0
3 years ago
Read 2 more answers
When two 6-sided dice are rolled, there are 36 possible outcomes. Find the probability that the sum is 8
katrin2010 [14]

Answer:

5/36

Step-by-step explanation:

Probability is the outcome that a  event will occur

Probability = Expected outcome/Total outcome

Since two sided dice are rolled, the total outcome will be expressed as;

Total outcome = 36

Since we are to find the probability that the sum is 8, the values that gives a sum of 8a re;

(2,6)(6,2), (5, 3), (3,5), (4, 4)

The expected outcome = 5

Probability = 5/36

Hence the probability that the sum is 8 is 5/36

4 0
3 years ago
Your crew can pave two driveways in a day. You work five days per week but take off 2 weeks each year for holiday and vacation.
Llana [10]
500 hope this helped :))
7 0
3 years ago
Read 2 more answers
Officer Brimberry wrote 16 tickets for traffic violations last week, but only 2 tickets this week. What is the percent decrease?
Verdich [7]

Answer:

87.5%

Step-by-step explanation:

It decreased by 16 - 2 or 14, and since he wrote 16 tickets last week, the answer is 14/16 in percent form, or 7/8 = 87.5%.

6 0
3 years ago
Other questions:
  • Find the sum of the infinite geometric series calculator
    5·1 answer
  • Which table correctly shows all the sample spaces for tossing a coin and rolling an even number on a six-sided number cube?
    5·1 answer
  • What is the LCD of thw fractions 1/3 and 11/15?
    9·1 answer
  • The main tank has a radius of 70 feet. What is the volume of the quarter-sphere sized tank? Round your answer to the nearest who
    15·1 answer
  • Triangle JKL is isosceles. The measure of angle J is 72° and the measure of angle K is 36°. Which statement describes angle L?
    8·2 answers
  • select the graph for the solution of the open sentence click until correct graph appears [×]>1​
    12·1 answer
  • Please help ASAP! Which answer choice is it???
    7·2 answers
  • 22
    6·1 answer
  • Sawyer was last year's PI Day
    13·1 answer
  • The starting salary for a particular job is naira 1.2 million per annum the salary increases each year by naira 75000 to a maxim
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!