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Kipish [7]
3 years ago
5

Please help

Mathematics
2 answers:
babymother [125]3 years ago
5 0
It is a valid sample because the first eight people were selected to participate? (the first one)
Vsevolod [243]3 years ago
5 0

Answer:

the answer is b

Step-by-step explanation:

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Complete the table using the equation y = 3x
erica [24]

Answer:

Table is attached with values, but answers are:

(0, 0) (1, 3) (2, 6) (3, 9)

Step-by-step explanation:

y = 3x

Substitute all values.

y = 3(0)

y = 0

0, 0

y = 3(1)

y = 3

1, 3

y = 3(2)

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y = 9

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4 0
2 years ago
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Please help me !!!!!!!!!!!!!!!!
Nutka1998 [239]

Answer: x=-10, y=13

Step-by-step explanation:

-3x+2y=56\\-5x-2y=24

+2y-2y = 0, eliminating y is much easier. So -3x-5x = -8x and 56+24 = 80

-8x=80\\x=-10

Substitute x in any equations but only 1 equation (Don't substitute in both equations.)

For me, I'd substitute x in -3x+2y=50

-3(-10)+2y=56\\30+2y=56\\2y=56-30\\2y=26\\y=13

So the answer is x = -10, y = 13

5 0
3 years ago
Joan earns $9.25 per hour. She worked 37.6 hours last week. What was the amount of her check?
slava [35]
37.6*9.25=$<span>347.8  without deductions</span>
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2 years ago
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What is 0.4(5+2x)-0.5=3(0.3x+0.7) I've solved this but I'm not sure I got the right answer
BlackZzzverrR [31]
If you have a graphing calculator one way to know you are right is put the left side in Y1 and the right side in Y2 then hit 2nd trace and intersection then find the intersection and the X value is your answer. If you don't have a graphing calculator then I'm sorry
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