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Anna11 [10]
3 years ago
5

I’m confused please help

Mathematics
1 answer:
Degger [83]3 years ago
6 0

This is completing the square.

So x^2-6x-12=0

Add 12 to both sides so x^2-6x=12

Now take half the x term and square it. Add this number to both sides.

So x^2-6x+9=12+9

Which is the same as (x-3)^2=21

This is answer 2.

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Simplify this expression: -6x + 8 - 3x - 2 + 5x Question 1 options: 24x + 0 14x + 10 4x - 6 -4x + 6
yanalaym [24]

Answer:

-4x + 6

Step-by-step explanation:

First, combine all of the x terms. When you combine these terms you get -4x. Then combine the constant terms, the terms without variables that is. This gets you 6. The equation can now be written as -4x + 6.

5 0
3 years ago
Which expression can be used to check the answer to 56+(-14)=n?
Delvig [45]

Answer: n = 42

Step-by-step explanation:

56 - 14 = 42

If + and - are right next to each other, the + cancels out.

7 0
3 years ago
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A boy at an amusement park has 38 ride tickets. Each ride on the roller coaster costs 5 tickets. After riding the roller coaster
Rina8888 [55]

Answer:

He will expend 35 tickets for 7 rides. 3 tickets are left.

Step-by-step explanation:

Giving the following information:

Number of tickets= 38

Tickets per ride= 5

<u>To calculate the number of rides he can make, we need to use the following formula:</u>

Number of rides= number of tickets / tickets per ride

Number of rides= 38/5

Number of rides= 7.6 = 7 rides

He will expend 35 tickets for 7 rides. 3 tickets are left.

5 0
4 years ago
For the following graphed line, what are the slope and y-intercept
morpeh [17]

Answer:

3,5

Step-by-step explanation:

I don't really know about hope this help

8 0
3 years ago
Less than 75% of workers got their job through internet resume sites. A researcher thinks it has increased.
Vera_Pavlovna [14]

Answer:

H0 : p = 0.75  against    H1: p > 0.75  One tailed test.

Step-by-step explanation:

We state our null and alternative hypotheses as

H0 : p = 0.75  against    H1: p > 0.75  One tailed test.

In this case H0 is not defined as p≤ 0.75 because the acceptance and rejection regions cannot be set up. Therefore we take the exact value of H0 : p= 0.75.

The claim is that the probability of the workers getting their job through the internet is greater than 75% or 0.75.

As H0 is supposed to be less than we choose H1 to be greater than equality.

5 0
3 years ago
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