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serious [3.7K]
2 years ago
13

I need help on whichever question anyone might know how to do . QUICK

Mathematics
1 answer:
DiKsa [7]2 years ago
8 0
9-7= 2 and ±2-±8=6 here are the answers to one of the questions you need help whith
You might be interested in
given a and b are numbers,and a+b =180,which statement also must be true ? a=180-b , a-180=b , 360=2a+2b, a=90 and B=90
Yuri [45]
A=180-b is same as a+b=180

because you just subtract b from both sides
3 0
2 years ago
How do find you equivelant expressions?
Svetlanka [38]
You'll have to start off by finding the variables. Ex:

3(x + 3) - 2(x + 3) 

As you can see here, the two similar variables are x. By using the distributive property, you will get this: 

3x + 9 - 2x + 6 

Next, you'll want to subtract the two variables, since 2x has a - in front of it: 

1x + 9 + 6 

or 

x + 9 + 6 

Then, you want to add the two numbers without the variable: 

x + 15

Your answer is x + 15. 
Hopefully that helped! :) 
4 0
2 years ago
A box of old books contains 6 mysteries, 4 biographies, and 2 children’s books. Which of the following can be used to determine
MAVERICK [17]
<h2>Answer:</h2><h2>The probability of choosing a mystery book from the box, replacing it, and then choosing a biography = \frac{1}{6}</h2>

Step-by-step explanation:

A box of old books contains mysteries,  biographies, and  children’s books.

The number of books in mysteries = 6

The number of books in biographies = 4

The number of books in childrens  = 2

The total number of books = 12

The probability of choosing a mystery book from the box = \frac{6}{12}

The probability of choosing a biography book from the box = \frac{4}{12}

The probability of choosing a mystery book from the box, replacing it, and then choosing a biography = ( \frac{6}{12}) ( \frac{4}{12})        ( since it is with replacement)

            = \frac{1}{6}

8 0
3 years ago
Factor<br> 2z to the second power +3z-9
kozerog [31]
The answer is (2z-3)(z+3)
5 0
3 years ago
The average of 8 people in a golf club is 44. A ninth person joins the club and the new average of the golf club is 47. What is
PSYCHO15rus [73]

Answer:

41 year old

Step-by-step explanation:

Suppose x is the total age before the ninth person joins. x/8=44 then the new persons age is a then x+a/9=47 so you subsitute x=352 then (352+a)/9=47 then 352+a=393 so we find a=41

5 0
2 years ago
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