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tiny-mole [99]
3 years ago
10

Does anyone know the answer please help

Mathematics
1 answer:
pogonyaev3 years ago
6 0

Answer:

It's a) y = 1/3x

Step-by-step explanation:

If you plug in the y and x into the problem, for example, 27y

27 = 1/3 times 9

if you multiply 9 and 1/3, you get 27

so it's a)

:)

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Jackie and Rachel both worked during last summer and made $960 each. Rachel worked 16 hours more than Jackie, but Rachel earned
Pavel [41]

Answer:

The number of hours Jackie worked  = 80hours

Step-by-step explanation:

Last summer:

Jackie made $960

Rachel made $960

let number of hours Jackie worked = x

Rachel worked 16 hours more than Jackie:

Number of hours Rachel worked = x + 16

if Jackie earned $y  per hour

Rachel earned $2 less per hour = y-2

Jackie: 960 = x × y = xy

Rachel: 960 = (x+16)(y-2)

960 = xy -2x +16y -32

recall xy = 960, insert the value for xy

960 = 960 - 2x +16y -32

- 2x +16y -32 = 0

2x -16y = -32

x-8y = -16

x = 8y-16

recall xy = 960, insert the expression for x

(8y-16)y = 960

8y² -16y = 960

y² -2y - 120 = 0

y²+10y-12y -120 = 0

y(y+10) -12(y+10) = 0

(y-12) = 0 or (y+10) = 0

y = 12 or -10

since y can't be negative, y = 12

x = 8y-16

x = 8(12) -16 = 80

The number of hours Jackie worked = x = 80 hours

7 0
3 years ago
the chumas family is driving from north carolina to california on vacation. They drive 330 in 5.5 hours How many hours would it
spin [16.1K]
An easy way is to work out their speed. Speed = distance/time.

First part: Speed = 330/5.5 = 60 mph

Finally, the second part:  time = distance / speed

So time = 720/60 = 12 hours
7 0
3 years ago
Read 2 more answers
A) chaim used an invalid reason to justify the congruence of a pair of sides or angles.
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Answer:

C

Step-by-step explanation:

Side Side Angle does not exist.

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3 years ago
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yaroslaw [1]

Answer:

The answer should be 3.3/4

Step-by-step explanation:

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2 years ago
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Nady [450]

Answer:

A

Step-by-step explanation:

because the -2 is where the point is and the slope will start there so when you draw a line the line will pass by (0,-2)

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