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Yuliya22 [10]
3 years ago
12

PLEASE HELP!!!!! BRAINLIEST!! I will give brainliest if you answer, I will also give brainliest ON ALL QUESTIONS!! if you go to

my page help with my other Questions!!!
Use this list of properties to justify each step of your math work. Justifications may be used more than once if needed. (5 points)
Distributive Property
Subtraction Property of Equality
Combine Like Terms
Multiplication Property of Equality
Division Property of Equality
Given
Addition Property of Equality

7x + 3x : 18 = 6(x + 3)
7x + 3x - 18 = 6x +18
10x - 6x = 18 + 18
4x = 36
x= 36/4
X= 9
Mathematics
1 answer:
Hunter-Best [27]3 years ago
4 0

Answer:

Destributive

Combine Like Terms

Addition Property of Equality and Subtraction Property of Equality

Combine Like Terms

Division Property of Equality

(I'm assuming the ":" in the first equation is a typo)

Step-by-step explanation:

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Simplify the variable expression below as much as possible.<br> 3x + 2y + 5-3
agasfer [191]

Answer:

3x+2y+2=0

3x=-2y-2

x=-(2y+2)/3

Step-by-step explanation:

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Find slopes , ill mark brainlist
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Answer:

\frac{3}{2} or 1\frac{1}{2}

Step-by-step explanation:

We are given a graph and asked to find the slope.

So we can see two coordinate points, one on (0, 3) and (2, 0).

When trying to find slope, we use the method rise over run, which basically means y over x as a fraction, in which you then divide.

So count how many times it'll take for x to get to y, base it off the picture below

Since we see our numbers to be divided are 3 over 2, do the division and you get 1 1/2.

Would this be negative though? No, since the graph is in an increase, not a decrease.

4 0
2 years ago
the ratio of white pens to green pens is 2 to 8. how many green pens are there if there are 18 white pens?
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There are 72 green pens.

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5 0
3 years ago
Write an equation in slope intercept form for the graph of the line.
zhannawk [14.2K]
Y = 2x - 3

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2 years ago
The average performance rating of the employees at Company A is 6.5 on a scale from 1 to 10 (10 being highest). The standard dev
djyliett [7]

Answer:

The best choice would be hiring a random employee from company A

Step-by-step explanation:

<em>Supposing that the performance rating of employees follow approximately a normal distribution on both companies</em>, we are interested in finding what percentage of employees of each company have a performance rating greater than 5.5 (which is the mean of the scale), when we measure them in terms of z-scores.

In order to do that we standardize the scores of both companies with respect to the mean 5.5 of ratings

The z-value corresponding to company A is

z=\frac{\bar x-\mu}{s}

where

\bar x = mean of company A

\mu = 5.5 (average of rating between 1 and 10)

s = standard deviation of company A

z=\frac{\bar x-\mu}{s}=\frac{6.5-5.5}{2.1}=0.7142

We do the same for company C

z=\frac{\bar x-\mu}{s}=\frac{7.4-5.5}{6.8}=0.2794

This means that 27.49% of employees of company C have a performance rating > 5.5, whereas 71.42% of employees of company B have a  performance rating > 5.5.

So, the best choice would be hiring a random employee from company A

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3 years ago
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