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elixir [45]
3 years ago
8

Find the difference- (ab+3a+7)- (-5ab-2)

Mathematics
1 answer:
coldgirl [10]3 years ago
3 0
<span>(ab+3a+7)- (-5ab-2)
=</span><span>ab+ 3a+ 7+ 5ab + 2
=3a + 6ab + 9</span>
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How to solve for literal equations with multiple variables
myrzilka [38]
<span>See examples for the method to solving literal equations for a given variable: Solve A = bh for b. Since h is multiplied times b, you must divide both sides by h in order to isolate b. Since (c+d) is divided by 2, you must first multiply both sides of the equation by 2</span>
6 0
3 years ago
Christina collected information about the ages of the players on her softball team. The ages were 10, 12, 14, 13, 12, 11, 13, 12
BARSIC [14]

We are told that Christina collected information about the ages of the players on her softball team. The ages were 10, 12, 14, 13, 12, 11, 13, 12, 11, 12, 12, and 13. Christina wants to describe the players’ ages in an article for the school newspaper.

Since we know that range of a data is difference between the highest and lowest values of a data set. Range of our data set will be 4 (14-10). A group of different ages could have same range as Christina's data set. So range will be not a good option.

A measure of central tendencies will be better option to represent information about ages of softball team players. Mean will give the average age of softball players.

\text{Mean age of players}=\frac{10+11+11+12+12+12+12+12+13+13+13+14}{12}

\text{Mean age of players}=\frac{145}{12}=12.0833

Let us find median of data.

10,11,11,12,12,12,12,12,13,13,13,14        

\text{Median age of softball players}=\frac{12+12}{2}

\text{Median age of softball players}=\frac{24}{2}=12

We can see that average of our data is 12 years.    

Therefore, a measure of central tendency will be better choice to describe ages of softball players.      

7 0
3 years ago
Which model represents 0.30 + 0.03? <br> A)a <br> B)b <br> C)c <br> D)d
Masteriza [31]
The model that represents 0.30+0.03 is A.
8 0
3 years ago
Draw and shade figures that represent 50%, 25%, and 150%. Label each figure and described it in words. How do I answer this ques
muminat
See photo for drawing. 
Words: 
Suppose a square is 100%, 
50%: the square is divided into two equal parts, and one of them is shaded, therefore it is 50%. 
25%: the square is divided into 4 equal parts, and one of them is shaded, therefore it is 25%. 
150%: there are two squares, each divided into 2 equal parts, and 3 of them is shadowed, therefore it is 150%. 

7 0
3 years ago
What is the slope of the line that passes through the point 3,5 and -2,2
Nostrana [21]

Answer:

3/5

Step-by-step explanation:

Slope=

\frac{y2 - y1}{x2 - x1}

slope =

\frac{2 - 5}{ - 2 - 3}

=

\frac{3}{5}

8 0
3 years ago
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