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meriva
4 years ago
11

z varies directly with x^2 and inversely with y. When x = 2 and y = 4, z = 3. What is the value of z when x = 4 and y = 9?

Mathematics
1 answer:
Aloiza [94]4 years ago
5 0
Attached the solution and work.

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What is 8 21/40 I don't understand how to do it
yaroslaw [1]
Hey, there !

If you want to know it as a "improper fraction" , you can

Multiply the denominator from the front number
Whatever the denominator and front number is , you add it to the numerator

So, for this problem we first have the multiply the front number from the denominator

Like: 8 (40)
That gives us the answer of: 320

Now we have to add 320 to 21

Like: 320 + 21

That gives us the answer of:341

We keep our denominator (which is "40" )

Your improper fraction would be:

341 / 40

Good luck on your assignment and enjoy your day!

~MeIsKaitlyn:)
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4 years ago
Read 2 more answers
A large water tank measures 6 feet across and 4 feet high. It is being filled with water at a rate of 10 gallons per minute. Abo
pentagon [3]

1.4 hours

It took a while to get this one, and I must admit, I'm not the best at explaining anything so I'm simply going to leave the answer above to help those who are stuck.

8 0
3 years ago
The area of rectangle gets reduced by 50 sq. units. If its length is reduced by 5 unit and the breadth is increased by 2 unit. I
Bumek [7]

Answer:

Step-by-step explanation:

Let the length and breadth of the rectangle be a,b units respectively.

Then the area will be ab square units.

Now if the length of the rectangle is reduced by 5 units and breadth is increased by 2 units then new length and breadth will be (a−5) units and (b+2) units.

Then new area will be (a−5)(b+2).

Then according to the problem,

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or, 2a−5b=−70.......(1).

Now if length of the rectangle is increased by 10 units and breadth is decreased by 5 units then new length and breadth will be (a+10) units and (b−5) units.

Then new area will be (a+10)(b−5).

Then according to the problem,

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Now adding (1) and (2) we get

−b=−30

or, b=30.

Putting the value of b in (1) we get, a=40.

Now a+b=40+30=70.

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4 years ago
Complete the inequality statement.
vodomira [7]

Answer:

 

Step-by-step explanation:

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3 years ago
If the four lines are extended, which system would have only one solution? On a coordinate plane, lines a and b would intersect.
Ksju [112]

Answer:

a

Step-by-step explanation:

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