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Debora [2.8K]
3 years ago
8

What are the answers to 7 and 8?

Mathematics
1 answer:
notka56 [123]3 years ago
4 0

Answer:

Step-by-step explanation: 7 b  and d8

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What is (f - 5)(-2) + 11f
n200080 [17]

Answer:

-2f+10+11f

= 9f+10

Step-by-step explanation:

just expand it

7 0
3 years ago
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Find the y intercept of -2,5 and 3,25
AlexFokin [52]

Answer:

Y-intercept = 13

Step-by-step explanation:

Since, given points are:  

(-2,5) and (3,25)

Now, by slope intercept form:

y= mx + b

Here, m= slope and b= y-intercept

In order to find y-intercept, we must find slope firstly:  

Since,

Slope= m= y2-y1 / x2-x1  

m= 25 - 5 / 3 - (-2)

m= 20 / 5  

m= 4  

Put ‘m’ in slope intercept form:

y= 4x + b  

Substitute either point into above equation:

25= 4(3) +b

25= 12 + b  

25 - 12 = b

or b= 25 - 12

b= 13

Hence, y-intercept is 13.  

6 0
4 years ago
4/7m = 2/7( 2m+1 )<br> What is M?<br> Check Solution
aev [14]
4/7m = 2/7(2m + 1)
4/7m = 4/7m + 2/7
4/7m - 4/7m = 2/7
0 = 2/7 (incorrect)

no solution
5 0
3 years ago
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*EASY* Will mark brainest!!
3241004551 [841]

perpendicular! the slope of one is 1/8 while the slope of another is 8/1

5 0
4 years ago
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tiffany answered 90 percent of the questions on the math test correctly. there were 50 questions in total. how many questions di
Andreas93 [3]
Hi!

Use the percentage formula to solve:

90 * 50 / 100 = 45

Tiffany answered 45 questions correctly.
3 0
3 years ago
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