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Elena L [17]
3 years ago
15

Please help with this

Mathematics
1 answer:
otez555 [7]3 years ago
4 0

Step-by-step explanation:

multiply 455 by 0.20

convert percentage to decimal

20% = 0.20 ( multiply by 10^-2)

why does this work?

convert to a fraction

20/100 ( this is also how you get decimal)

simplify 20/100 = 1/5

so multiplying 455 by 0.20 is the same as dividing by 5

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vlabodo [156]

Answer:

{(-2, -7), (-1, -5), (0, -3), (1, -1), (2, 1)}

Step-by-step explanation:

Consider an element in the set we want to achieve. This element can be written as the ordered pair (x, y), where x comes from the set {-2, -1, 0, 1, 2} and given some value of x, we can find y (with the formula y = 2 * x - 3).

So to begin finding the set of all pairs in the resulting set, we first begin by listing out all values of x in each pair:

(-2, y)

(-1, y)

(0, y)

(1, y)

(2, y)

Now to find y, we use the formula y = 2 * x - 3, and we get

(-2, 2 * (-2) - 3)

(-1, 2 * (-1) - 3)

(0, 2 * (0) - 3)

(1, 2 * (1) - 3)

(2, 2 * (2) - 3)

which simplifies to

(-2, -7)

(-1, -5)

(0, -3)

(1, -1)

(2, 1)

5 0
3 years ago
Please help
vaieri [72.5K]

Answer:

B

Step-by-step explanation:

So this was a pretty difficult question to do algebraically so I just came up with an example.

6 0
4 years ago
Read 2 more answers
To win the small county lottery, one must correctly select 3 numbers from 30 numbers. the order in which the selection is made d
scoray [572]
3 x30=90 so there are 90 possible answers
7 0
3 years ago
|-19+9|/3-|14-22|/9<br> give me an answer
MArishka [77]

Answer:22/

9

= 2 4/

9

≅ 2.4444444

Step-by-step explanation:

Add: -19 + 9 = -10

Absolute value: abs(the result of step No. 1) = abs(-10) = 10

Divide: the result of step No. 2 / 3 = 10 / 3 = 3.3333333333333 = 10/

3

Subtract: 14 - 22 = -8

Absolute value: abs(the result of step No. 4) = abs(-8) = 8

Divide: the result of step No. 5 / 9 = 8 / 9 = 0.88888888888889 = 8/

9

Subtract: the result of step No. 3 - the result of step No. 6 = 10/

3

- 8/

9

= 10 · 3/

3 · 3

- 8/

9

= 30/

9

- 8/

9

= 30 - 8/

9

= 22/

9

6 0
3 years ago
Can someone help please Stickers are sold in packages of 15 sheets. If there are 20 students in the class, how many packages of
MrRa [10]

Answer:

4 packages

Step-by-step explanation:

If there are 20 and stickers are sold in 15 sheets, then you got to work backwards. take the answer and multiply it by the amount of sheets. For example: 4 times 15 is 60, 60 divided by 20 is 3. No leftover numbers.

8 0
3 years ago
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