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saw5 [17]
3 years ago
5

Y varies inversely with x k= 1.25 What is the value of y when x is 5?

Mathematics
1 answer:
alexgriva [62]3 years ago
4 0

Answer:

The value of y is 0.25

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form y*x=k or y=k/x

For x=5

Find the value of y

k=1.25

substitute in the equation

y=k/x -----> y=1.25/5=0.25

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The ratio of cassette to compact disc is 10 to 3 and the number of cassettes is 10 less than 5 times the number of compact discs
OlgaM077 [116]

There are 20 cassettes.

Step-by-step explanation:

Given,

Ratio of cassette to compact disc = 10:3

Let,

the number of cassettes = 10x

Number of compact disc = 3x

According to given statement;

the number of cassettes is 10 less than 5 times the number of compact discs.

10x = 5(Number of CD) - 10

10x=3(5x)-10 \\10x=15x-10\\10=15x-10x\\10=5x\\5x=10

Dividing both sides by 5

\frac{5x}{5}=\frac{10}{5}\\x=2

Number of cassettes= 10x = 10(2) = 20

There are 20 cassettes.

Keywords: variable, ratio

Learn more about variables at:

  • brainly.com/question/10414011
  • brainly.com/question/10483199

#LearnwithBrainly

5 0
3 years ago
What is the value of x in the expression, x 2 = 9? Type the NUMBER in the box below.
alekssr [168]
The value of x in the expression, x 2 = 9 is 4.5

9 divided by 2 = 4.5
7 0
2 years ago
Please help me find the measure to side c and the process to solve the problem
jeka94

Answer:

c = 43

Step-by-step explanation:

sin theta = opposite side / hypotenuse

sin 28 = 20/c

Multiply each side by c

c sin 28 = 20/c *c

c sin 28 = 20

Divide each side by sin 28

c sin 28 /sin 28 = 20/sin 28

c = 42.60108936

To the nearest whole number

c = 43

4 0
3 years ago
What is the area of the following circle <br> r = 5
Luden [163]

Answer:

78.5unit^2

Step-by-step explanation:

πr^2

3.14*5*5

78.5unit^2

6 0
2 years ago
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The price of an item has been reduced by $4.19. The original price was $54.73. What is the price now?
poizon [28]

Answer:

$50.54

Step-by-step explanation:

8 0
3 years ago
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