The product of a + 3 and –2a2 + 15a + 6 is –2a3 + xa2 + 51a + 18. What is the value of x?

Answers

Answer 1

Answer: Value of x is 9 As when we multiply a + 3 by -2a2 + 15a + 6 We get (a + 3) (-2a2 + 15a + 6) -2a3 + 15a2 + 6a - 6a2 + 45a + 18 -2a3 + 9a2 + 51a + 18 If we compare the coefficients of a2, we get x = 9

Answer 2

Answer:

Answer:

Step-by-step explanation:

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Albert says that the two systems of equations show below have the same solutions determine in-state whether you agree with Albert. Justify your answer

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Recall what portion of earth is included in the biosphere

Find (9.3 X 10^6) + (1.8 X 10^4).Express your answer in scientific
notation.
Please answer i'm studying for a test tomorrow :D

Answers

Answer:

7.5 × 10²

Step-by-step explanation:

pilar bought 2/3 pound of turkey she ate 1/4 of the turkey for lunch how many pounds of turkey did she eat

Answers

Step-by-step explanation:

2/3 - 1/4

8/12 - 3/12= 5/12

Sheate5/12poundofturkey.

please seethe attached picture for full solution

hope ithelps

Goodluck on your assignment...

My mum was 27 when I was born. 8 years ago she was twice as old as I shall be in 5 years time. How old am I now?

Answers

use timeline and work from NOW
me. mom
(1) @born 0. 27
My mum was 27 when I was born.
(2) now-8. x-8. y-8
(3) now. x y
(4) now+5. x+5. y+5

(1)&(3). y-x = 27-0 = 27

8 years ago she was twice as old as I shall be in 5 years time.
(2)&(4). y-8 = 2(x+5)

2 variables 2 equations ... solve x
x = 9, y = 36

3. How many people preferred WCLM?A. 88
B. 24
C. 100
D. 96

4. Which one of the following statements expresses a true proportion?
A. 3:4 = 9:12
B. 2:1 = 1:2
C. 7:9 = 8:9
D. 54:9 = 6:3

Answers

Answer:

Step-by-step explanation:

3)Total no of people surveyed = 400

Percentage of people preferred WCLM = 24%

Hence no of people who preferred WCLM = 24(400)/100

=96

3:4 =9:12 is true since when simplified both are equal

B is not right 2:1 cannot equal 1:2 as ratio is not commutative

c is not right as they are not equal when simplified

D is not right since when we divide left side by 9, we get 6:1

Answer:

Step-by-step explanation:

9 divided by 3 gives 3

12 divided by 3 gives 4

therefore 9:12 is equal to 3:4

The mean weight of trucks traveling on a particular section of I-475 is not known. A state highway inspector needs an estimate of the population mean. He selects and weighs a random sample of 49 trucks and finds the mean weight is 15.8 tons. The population standard deviation is 3.8 tons. What is the 95% confidence interval for the population mean?