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Sergeeva-Olga [200]
3 years ago
15

Help me out plz................................

Mathematics
2 answers:
12345 [234]3 years ago
7 0
I think it is A but make sure with someone else
ExtremeBDS [4]3 years ago
7 0

Answer:

A.

Step-by-step explanation:

We have the expression \sqrt{x+4} -3=2 and are asked which is the first step to solve it.

When doing equations, you always want to isolate x, now since x is stuck in a square root, we need to first get rid of the numbers outside the root. So -3, we would need to add three to both sides first. This step crosses out all other answers and leave us with A.

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Find the product.<br><br> (8-3z)(8+3z)
maks197457 [2]

Step-by-step explanation:

you can open the file I gave you now. the answer is there

7 0
3 years ago
The graph for the first equation of a system is shown in orange. The second equation is: 3y+30=6x What is the solution to the sy
Alik [6]

Answer:

B.

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
Is m+m+3m equivalent to 3m+2​
Dovator [93]

Answer:5m

Step-by-step explanation:

3m +m+m=5m not 3m +2

5 0
3 years ago
martin spent 6 hours on homework every day . what percentage of the day did martin spend doing homework ?
Ann [662]
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6 0
3 years ago
Which of the following are true about regression with one predictor variable (often called "simple regression")? Check all that
AfilCa [17]

Answer:

<h3>A. The slope describes the amount of change in Y for a one-unit increase in X .</h3><h3>B. The regression equation is the line that best fits a set of data as determined by having the least squared error.</h3>

Step-by-step explanation:

In statistics, linear regression is a analysis we do to describe the relationship between two variables. With this study, we pretend to know if there's a positive or negative correlation between those variables, if that correlation is strong or weak.

In a linear regression analysis, we modeled the data set using a regression equation, which is basically the line that best fits to the data set, this line is like the average where the majority of data falls. That means choice A is right.

When we use linear equations, we need to know its characteristics, and the most important one is the slope, which is the ratio between the dependent variable and the independent variable. Basically, the slope states the unit rate between Y and X, in other words, it states the amount of Y per unit of X. That means choice B is correct.

Therefore, the correct answers are A and B.

4 0
3 years ago
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