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elena-14-01-66 [18.8K]
3 years ago
11

If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8?

Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
5 0

Answer:

The answer is : 2/3

Step-by-step explanation:

Given is that y varies directly as x.

Means as y increases or decreases, x also increases or decreases.

When y is 6 when x is 72,

So, when x = 8, we have to find y.

We can write the relation as follows:

\frac{6}{y}= \frac{72}{8}

72y=48

y=\frac{48}{72} = \frac{2}{3}

Eddi Din [679]3 years ago
3 0

Answer:

2/3

Step-by-step explanation:

Y varies directly as x

Y =kx

Y=6 when x = 72

First find the relationship between y and x.

i.e find the value of k

Substitute the value of x and y

6 = k *72

Make k the subject of the formula

K = 6/72

K= 1/12

:. The rlationship between x and y is

Y = 1/12x

When x is 8

Y = 1/12 * 8

Y = 8/12

Y = 2/3 and that is the answer

Hope it helped you

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The answer is that y is equal to -3 and x is equal to 7 
2x-y=17
-2(x-y)=10 )
--------------
2x-y=17
-2x+2y=-20
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y=-3

x-y=10 
x-(-3)=10
x+3=10
 -3   -3
----------
x=7



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3 years ago
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Mandarinka [93]

Answer:

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Step-by-step explanation:

The area of a rhombus = a. b

where, a = side of the rhombus

and      b = height of the rhombus.

Here, the side, a = 5 ft

Height, b = 4.5 ft.

Therefore, area, A = 5 X 4.5 sq. ft

⇒ A = 22.5 sq. ft which is the required answer.

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3 years ago
What is the product of 1 2/3 and - 3 1/2
solong [7]

Step-by-step explanation:

1 2/3 can be written as 5/3 and -3 1/2 can be written as -7/2

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hope this answer helps you dear...take care and may u have a great day ahead!

3 0
3 years ago
Read 2 more answers
Zahid is paid a set wage of $774.72 for a 36-hour week, plus time-and-a-half for overtime. In one particular week he worked 43 h
Llana [10]

Answer:

$1000.68

Step-by-step explanation:

\frac{774.72}{36}  = 21.52 \: (per \: hour) \\ \frac{21.52}{2}  = 10.76 \:  \\ 21.52 + 10.76 = 32.28(per \: hour \: of \: over \: time) \\  \\ 43 - 36 = 7(hours \: of \: overtime) \\  \\ 7 \times 32.28 = 225.96 \\ 774.72 + 225.96 = 1000.68

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2 years ago
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