MATHEMATICS HIGH SCHOOL

Which expression is equivalent to (x²+3x-4)(x-5)1) x³+8x²-19x+20
2) x³-2x²-19x+20
3) x³-2x²-11x+20
4) x³-8x²-11x+20

Answers

Answer 1
Answer: (x^2+3x-4)(x-5)=x^3-5x^2+3x^2-15x-4x+20=\n \n=x^3-2x^2-19x+20\ \ \ \Rightarrow\ \ \ Ans.\ B

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Your test grades in math this semester are 96, 100, 72, and 85. Find your mean grade. This is mean median and mode. A) 90.75 B) 88.25 C) 86.50 D) 84.00

Answers

B. 88.25

To find mean, you need to add all numbers given, then divide by the amount of numbers you have, therefore:

96 + 100 + 72 + 85
353

353 / 4

88.25

Please help me solve for 1

Answers

Answer:

b=

(36)/(7 )

Answer:

b=5.14

Step-by-step explanation:

Solve the inequality. |3x + 6| < 12A. –6 > x > 2

B. –2 < x < 2

C. –6 < x < 2

D. –21 < x < 3

Answers

The solution to the inequality |3x + 6| < 12 is -6 < x < 2, which corresponds to option C.

To solve the inequality |3x + 6| < 12, we can break it down into two separate inequalities:

3x + 6 < 12

-(3x + 6) < 12

Solving the first inequality:

3x + 6 < 12

Subtracting 6 from both sides:

3x < 6

Dividing both sides by 3 (since 3 is positive, we don't need to change the direction of the inequality):

x < 2

Solving the second inequality:

-(3x + 6) < 12

Distributing the negative sign:

-3x - 6 < 12

Adding 6 to both sides:

-3x < 18

Dividing both sides by -3 (since -3 is negative, we need to change the direction of the inequality):

x > -6

Combining the solutions from both inequalities, we have:

-6 < x < 2

Therefore, the correct option is C. -6 < x < 2.

To know more about inequality :

brainly.com/question/21857626

#SPJ2
Hello,

Answer C

if 3x+6>0 then |3x+6|=3x+6
==> 3x+6<12==>3x<9==>x<2
else
|3x+6|=-3x-6
-3x-6<12==>-3x<18==>x>-6

-6<x<2

The data set represents a progression of hourly temperature measurements. Use a graphing calculator to determine the quadratic regression equation for this data set.I've tried all of these answers but none of them seemed correct

Answers

Answer:

b

Step-by-step explanation: I had this question before

Answer:

b

Step-by-step explanation:

A circle has a diameter of 50 meters ,which is its circumference?

Answers

The circumference of a circle is pi • diamter

3.14 • 50 = 157 meters

Hi there! :) The answer to your question is 157.08 meters. You do pi*50(because it is the diameter) and that is how you get the answer.

Hope I helped! :D

Solve for x.
3(x + 5) - 2(x + 2) = 20

Answers

3(x + 5) - 2(x + 2) = 20

Distribute the 3 and -2.

3x + 15 -2x - 4 = 20

Simplify.

x + 11 = 20

Subtract 11 on both sides

x = 9

Your final answer is x = 9.
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