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Softa [21]
4 years ago
8

For the inverse variation equation xy = k, what is the value of x when y = 4 and k = 7? 3 28

Mathematics
2 answers:
Oliga [24]4 years ago
7 0

Answer:

The value of x is \frac{7}{4}.

Step-by-step explanation:

It is given that the inverse variation equation is

xy=k                  ..... (1)

The value of y is 4 and the value of k is 7.

Substitute y=4 and k=7 in equation (1).

x\times 4=7

Divide both sides by 4.

\frac{x\times 4}{4}=\frac{7}{4}

x=\frac{7}{4}

Therefore the value of x is \frac{7}{4}.

Andre45 [30]4 years ago
5 0
It would be 7/4 or 1.75 if needed to be in decimal format.
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Sue had $100.00 in her wallet. She spent 23% of that money on notebooks and folders how much money did she spent?
ruslelena [56]

Answer: 23$

Step-by-step explanation: 100*.23=23$

7 0
3 years ago
Read 2 more answers
Help,anyone can help me do quetion.​
3241004551 [841]

Answer:

(a) x = 128^{o}

(b) x = 74^{o}

Step-by-step explanation:

A. sum of angles in a polygon = (n - 2) 180

The polygon given is an irregular pentagon, where n = 5

So that;

sum of angles in a pentagon = (5 - 2) 180

                        = 3 x 180

                        = 540^{o}

Thus,

x + 90 + 76 + 110 + 136 = 540^{o}

x + 412 = 540^{o}

x = 540^{o} - 412

x = 128^{o}

B. The polygon given is an irregular pentagon, where n = 5.

Let the supplementary angle with angle 38 be represented by y,

y + 38 = 180

y = 180 - 38

  = 142^{o}

y = 142^{o}

Let the supplementary angle with x be represented by z, so that;

z + 72 + 120 + 100 + 142 = 540^{o}

z + 434 = 540^{o}

z = 540^{o} - 434

  = 106^{o}

z = 106^{o}

But, x + z = 180^{o}

Then;

x + 106^{o} = 180^{o}

x = 180^{o} - 106^{o}

  = 74^{o}

x = 74^{o}

7 0
3 years ago
Solve the following inequality for dd. Write your answer in simplest form. −7d−3>2d-10
LUCKY_DIMON [66]

Answer:

  d < 7/9

Step-by-step explanation:

Add 7d +10

  7 > 9d

Divide by 9

  7/9 > d

3 0
3 years ago
Question 3 of 10
iragen [17]

Answer:

Question 3 of 10 The answer should be 7

Step-by-step explanation:

The reason is  because if it is out of 100 7/100 is still 7%

6 0
3 years ago
A loan of $12,000 is made at 5.25% interest, compounded annually. After how many years will the amount due reach $22,000 or more
yaroslaw [1]

Answer:

About 16 years

Step-by-step explanation:

First we need to figure out 5.25% of 12000

5.25 x 0.12000 = 0.63

Then we move the decimal

630

Then we need to figure out how many years it will take to reach $22000

Since we already owe $12000, we can just divide using $10000 because 10000 + 12000 = 22000

10000/630 = 15.87

Which is about 16 years

6 0
3 years ago
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