All categories

3 years ago

This is an test question if you a 11 or 12th grade i need help

Mathematics

2 answers:

goblinko [34]3 years ago

6 0

Answer:

2x - 3 with no remainder

Step-by-step explanation:

apex

disa [49]3 years ago

5 0

The answer is B. Because when you get 2x^2+3x-9 and factor it you get
(2x-3)(x+3)/(x+3). The x+3 you cancel out and you're left with 2x-3. Hope that helps

You might be interested in

A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It is

Dahasolnce [82]

Answer:

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

Step(i):-

Given the mean of the Population(μ) = 419 grams

The sample size 'n' =19

Given mean of the sample x⁻ = 412

Given variance of the sample S² = 784

S = √784 = 28

Step(ii):-

Null hypothesis: H₀: There is no sufficient evidence to support the claim that the bags are underfilled.

Alternative hypothesis: H₁:

There is sufficient evidence to support the claim that the bags are underfilled.

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{412 -419}{\frac{28}{\sqrt{19} } }$

t = -1.09

|t| = |-1.09|

Degrees of freedom ν = n-1 = 19-1 =18

t₀.₀₂₅ = 3.19

Final answer:-

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

8 0

3 years ago

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. Wh

Alinara [238K]

There are 20 C3 possible ways to choose 3 books to read.
There are 5 C3 possible ways to choose 3 mysteries to read.
The probability that Mariah will not choose all mysteries can be expressed as 1-5C3/20C3. (These 3 Choices Are True)

There are 1 C3 possible ways to choose 3 books that are not all mysteries.
The probability that Mariah will choose 3 mysteries can be expressed as 1/5C3.
(These 2 Choices Are False)
Hope This Helps

7 0

3 years ago

Read 2 more answers

Check my answer. I think it C but i really don't know.

Tamiku [17]

Answer:

Step-by-step explanation:

The correct answer is A.

Try breaking the shape into other shapes that you can find the area for and then adding them together.

5 0

3 years ago

Read 2 more answers

Can you tell me what correct answer is and why

solmaris [256]

Answer:

The correct answer is D...

Step-by-step explanation:

In order to find the distance of the diagonals, you would need to use the distance formula...

The square root of (x2-x1)^2 + (y2-y1)^2

After you plug in the letters into the appropriate places you should get the square root of (a+b)^2 +c

8 0

3 years ago

19. Luggage on a certain airline is limited to 2 pieces per person.

Mama L [17]

Answer: The second piece can weigh 256 pounds at most.

Step-by-step explanation:

Hi, to answer this question we have to write an inequality with the information given:

The sum of the weight of each piece of Luggage must be less or equal to 581 pounds:

x + 325 ≤581

Where x is the second piece's weight.

Solving for x:

x ≤581 -325

x ≤ 256

The second piece can weigh 256 pounds at most.

Feel free to ask for more if needed or if you did not understand something.

7 0

3 years ago