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marin [14]
2 years ago
9

If

Mathematics
1 answer:
Setler79 [48]2 years ago
6 0

Answer:

-8

Step-by-step explanation:

((x * -5) / -8) = 5

multiply both sides by -8

x * -5 = 40

divide both sides by -5

x = -8

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A university professor asked his class of 42 students when they had studied for his class the previous weekend. There responses
Basile [38]

<u>ANSWERS:</u>

a) 16 students

b) 25 students

c) 2 students

<u>STEP BY STEP:</u>

There are 42 students in total. This question can be solved by <em>"Principal of Inclusion and Exclusion"</em>

Question a)

The students that studied on Sunday in total with overlaps is 30. To figure out the students that ONLY studied on Sunday you need to first minus the overlaps in the combos:

the combos:

3, 10, 6, 2

Since the last combo included all of the other dates, we need to minus it:

1, 8, 4, 2

Now we can use the total of Sunday and minus the combos that includes Sunday:

30 - (4 + 2 + 8)  = 16 students

Question b)

To figure out all the students that only studied on ONE day, not 2 not 3, just one day. We need to figure out the students that studied for Saturday and Friday using the same method before for figuring out Sunday:

<u>Friday:</u> 9 - 4 - 1 -2 = 2 students

<u>Saturday:</u> 18 - 1 - 2- 8 = 7 students

and now add them all together: 2 + 7 + 16 = 25 students

That is the total number of students that studied on one day.

Question c)

Now for the numbers of students that didn't study... We can just use the total to minus everything else!

42 - (25 + 1 + 4 + 8 + 2) = 2 students!!!

<em>And thats all done!  If you still don't get it, please ask!</em>

7 0
3 years ago
Which set of points is a function?
mario62 [17]

Answer:

B

Step-by-step explanation:

This is a really simple topic. All you need to do when seeing these ordered pairs is see which has x-values that don't repeat. Over here, we can see that that is B, so B is the correct option.

5 0
2 years ago
Find the y-intercept of the function.<br> y = 6^x
dsp73
Y-intercept of f(x) is a value of function for x = 0.

y = 6^x ⇒ f(x) = 6^x

f(0) = 6^0 = 1

Answer: (0; 1)
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Question 6

first multiply the numerator and

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Question 7

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3 years ago
7h=-(-2h-18) solve for h please im giving out brainliest
Eduardwww [97]

Answer:

-2

Step-by-step explanation:

trust me bro

6 0
3 years ago
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