MATHEMATICS HIGH SCHOOL

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!Factor x^2 + 2x - 15.

A) (x - 5)(x + 3)

B) (x - 5)(x - 3)

C) (x + 5)(x + 3)

D) (x + 5)(x - 3)
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!! Factor x^2 + - 1

Answers

Answer 1
Answer:

x^2 + 2x - 15=\n\nx^2-3x+5x-15=\n\nx(x-3)+5(x-3)=\n\n(x+5)(x-3) \Rightarrow \text{D}

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Answers

♥C. It was named after Truman's Secretary of State.♥
A. It was designed to aid poor people in the United States. False
B. It was implemented in 1954. False
C. It was named after Truman's Secretary of State. True
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C. It was named after Truman's Secretary of State

Find the equation of a line perpendicular to y - 12 = 2x – 8 that passes through the point (2, 3). (answer in slope-intercept form)

Answers

Hello,

The slope of y-12=2x-8 is 2 thus the perpendicular will have as slope -1/2

y-3=-1/2(x-2)
or y=-x/2 + 4 is the equation searched.

Complete the following statement. Write Sometimes,always, or never

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Answers

The answer is Always
the answer is never because a parallelogram has 2 sets of parallel sides

please help me solve these 1, 2, 7 and 8 questions!! I will also be giving out brainlest and 30 points to you if you get it right!

Answers

1. Yes it shows proportional relationship because they go by 5.
2. okay.. so your answer choices are 3) 2, 4) 10, 5) -2, and 6) 8. I'M GONNA GUESS. it's going to be #3. 
3. Okay so $100- 30 - 10 = $60 That means that each hat cost $6 dollars and he bought 10 of them so 10 times 6 equals 60. 
4. they cost 4.50 because she bought ten of them so if you multiply 4.50 by ten you get 45 and she had 5 left over. 

Hope this helped! 

:)

Please tell me which ones were wrong and which ones were right!

Solve the equation using the quadratic formula.x^2 + 3x -2 = 0
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x = −3±√17/2

x =−2±√17/3

x = −2±√29/4

x = 3±√11/2

Answers

Hello:
x²+3x-2 = 0
delta = b²-4ac       a=1       b = 3        c = -2
delta =(3)²-4(1)(-2) =17 =(√17)² 
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The table gives the probabilities that new cars of different models will have brake failure. The car model that is least likely to have a brake failure is model , and the probability of brake failure for this model is %.Car Model            Brake Failure
                             in New Car
A                            0.0065%
B                            0.0037%
C                            0.0108%
D                            0.0029%
E                            0.0145%
Total 0.0048%

Answers

All the information we have are the probabilities, and what we need is the lowest number: so let's choose the smallest probability among the numbers: 0.0065%, B 0.0037%,C 0.0108%,D 0.0029%, E 0.0145%. The smallest of the numbers is 0.0029% -it starts with two 00s and the number that follows, 2, is smaller than all there others - so the smallest probability is in option D - and the model would be the corresponding model (but we're missing some information here)

Answer:

Model D is least likely to have a brake failure.

Step-by-step explanation:

since when we will compare all the values of the probability of brake failure for the models in % by the following table:

Car Model           Brake Failure

                                   in New Car

A                              0.0065%

B                              0.0037%

C                                 0.0108%

D                                 0.0029%

 E                                 0.0145%

Total                      0.0048%

We will see that 0.0029% is the least percent among all the other entries.

Hence car model D is most likely to have a least chance of brake failure.
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