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
Tom [10]
2 years ago
11

What should be added to (-5 a2b - 9 ab) to get a2b + 3 ab?​

Mathematics
1 answer:
Doss [256]2 years ago
5 0

Based on given conditions,

a²b + 3 ab - (-5 a²b - 9 ab)

→a²b + 3 ab + 5 a²b + 9 ab

→(a²b + 5 a²b) + (3ab + 9 ab

Now collecting the coefficients and adding them,

(1 + 5)a²b + (3 + 9)ab

→6 {a}^{2}b + 12ab

Hence, the <u>6</u><u>a</u><u>²</u><u>b</u><u> </u><u>+</u><u> </u><u>1</u><u>2</u><u>a</u><u>b</u> should be added.

You might be interested in
You roll a six-sided number cube (die). What is the BEST answer for the probability that the number rolled is between 1 and 6, i
posledela

Answer: It is A certain.

Step-by-step explanation:

Because all the numbers on a six-sided cube is between 1 and 6 so it is certain or 100/100 that the number will land on a number between 1 and 6.

4 0
3 years ago
Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.
Vinvika [58]

Answer:

The point estimate for population mean is 8.129 Mpa.

Step-by-step explanation:

We are given the following in the question:

Data on flexural strength(MPa) for concrete beams of a certain type:

11.8, 7.7, 6.5, 6.8, 9.7, 6.8, 7.3, 7.9, 9.7, 8.7, 8.1, 8.5, 6.3, 7.0, 7.3, 7.4, 5.3, 9.0, 8.1, 11.3, 6.3, 7.2, 7.7, 7.8, 11.6, 10.7, 7.0

a) Point estimate of the mean value of strength for the conceptual population of all beams manufactured

We use the sample mean, \bar{x} as the point estimate for population mean.

Formula:

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

\bar{x} = \dfrac{\sum x_i}{n} = \dfrac{219.5}{27} = 8.129

Thus, the point estimate for population mean is 8.129 Mpa.

4 0
2 years ago
!!!!!!!I NEED HELP WITH THESE PROBLEMS. THANK YOU!!!!!
Viefleur [7K]
The answer to your question is A

6 0
2 years ago
Pat made a total of 48 pottery plates and cups. if she made twice as many plates as cups, how many plates did she make?
ddd [48]
If C stands for cups, solve for C

48 - 2c = 0
    l
subtract 48 from each side.
    l
2c=-48
    l
divide 48 by 2 --->  24.



3 0
3 years ago
Read 2 more answers
Someone please help me
Karolina [17]
NO = ON: reflexive property
MN= PO; MO = PN; NO = ON; SSS

i believe the answer is the last one
Reflexive property SSS
3 0
3 years ago
Other questions:
  • The number 15, _56 rounded to the nearest thousand is 15,000. What number is the missing digit? Explain.
    15·1 answer
  • 20. A cement mixer held 6 3/4 tons of cement. Ms. Folley used 2/3 of the cement for her driveway. How many tons of cement remain
    11·1 answer
  • PLZ HURRY DIS IS TIMED !!!
    7·1 answer
  • Major help I would highly appreciate it:(
    5·1 answer
  • EXTRA POINTS PLEAS HELP ME !!!!!!!!!!!! :3 ◑ω◐ 14 points if you can help ◑ω◐
    8·2 answers
  • Draw a model to find the product 84×0.24
    12·2 answers
  • The admission to the fair is $5 and the cost per ride is 50 cents. If his parents give hime $20, write and solve a linear equati
    6·1 answer
  • PLEASE ANSWER THIS RIGHT!! TODAYS MY LAST DAY TO DO THIS
    15·1 answer
  • Graph: y=3/4x+5 Please let me know guys
    6·1 answer
  • Does the point (2, 5) satisfy the equation y = 5x − 5?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!