Answer this please. Will give brainliest.

IT/IS/METEOR

Step-by-step explanation:

1. a) -40 ÷ 5= -8

b) 30 ÷  (-15) = -2

c) -88 ÷  (-11) = 8

d) -100 ÷  (-4) = 25

2. a) -54 ÷ 9 = -6

b) -36 ÷  -12 = 3

c) 75 ÷  -25 = -3

d) 0 ÷  -10 = 0

3.a) -48 ÷  (-3) = 16

b) -36 ÷  18 = -2

c) 180 ÷  (-10) = -18

d) 900 ÷  450 = 2

4. a) 150 ÷  -2 = -75

b) -7500 ÷  -75 = 100

c) -24+9 ÷  -8+3 = 3

d) -24/-8 ÷  9/3 = 6

5.a) -13 +  1 /3 = -4

b) (-15)(-4) ÷  -6 = 10

c) -20-25 ÷  -15 = 3

d) 100 - (-20) ÷  30 = 4

6. a) -49 ÷  7 + -64 ÷  8 = -15

b) 150 ÷  -15 + -13 ÷  -13 = -9

c) -26 ÷  -13 + -60 ÷  5=  -10

d) -99 ÷  -1 + 0 ÷  -99 = 9

7. a) (-2)(-6)/-3 = 6

b) 8 (-6)/(-2) = 24

c) -9(-2)/(-6) = -3

d) 144/ -(-2)(-6) = -12

8. a) (3)(-8)/2 = -12

b) (3) + (-8)/ -5 = 1

c) 96 ÷  - (3)(-8) = 4

d) 9(-8) ÷  4(3) = -6

9. a) x ÷  7 = -6, x= -42

b) b ÷  -3 = -14, b= 42

c) 360 ÷  q = -36, q= -10

d) -64 ÷  m = 4, m = -16

10. a) 8y = -56, y = -7

b) -3p = - 63, p = 21

c) 80 ÷  u = 2, u = 40

d) 80 ÷  (-v) = 2, v = -40

I remember doing the same worksheet in high school lol

hope this helps

step-by-step explanation:

30% of $420 is 0.30($420) = $126 and $420 + $126 = $546.

or, 130% of $420 is 1.3($420) = $546.

notice that this is not the $600 original list price with which we started.

why doesn't this work?

the method does not work because 30% of $420 is not the same amount as the 30% of $600. it may seem obvious when stated this way, but it is a very common error made on problems of this type. we cannot just use the same percent and get back to the original amount because we are taking that percent of a different value.

to work problems of this type correctly, it is generally best to write an equation for the situation and then solve.

example: since (100% – 30%)(original price) = (sale price)

70% of the   (original price) is $420.

0.7x   = 420

equation image indicator

x = 600

the original cost was $600.

we may also solve this problem using the two-step method. working the problem in two steps requires us to use more algebra skills. we have to know that x = 1x (identity property of multiplicationtext annotation indicator) and that 1x – 0.3x = 0.7x (subtracting like terms). then we solve the problem as follows:

(original price) – 30%(original price) = sale price

x – 0.3x = 420

0.7x = $420

equation image indicator

x = 600

the original cost was $600.  

note that with both of the above methods we do obtain the correct original amount.

example: after a 5% pay raise, hermione is earning $22,680 per year. what was she earning before the pay raise?

105% of (original salary) = current salary

1.05x = 22,680

equation image indicator

x = 21,600

hermione earned $21,600 per year before the pay raise.

this is an example so maybe you will get how to at least do it!

add an image !

step-by-step explanation: