All categories

3 years ago

The value of y varies directly with x. If x= 3, then y= 21. What is the talue of x when y = 105?

Mathematics

1 answer:

Anna007 [38]3 years ago

6 0

Answer:

Step-by-step explanation:

y=21 x 5 = 105

x=3 x 5 = 15

You might be interested in

What is the equation of a line, in point- slope form, that passes through (5, -3) and has a slope of 2/3?

Alika [10]

<h3><u><em>Option B</em></u></h3><h3><u><em>The equation of a line, in point- slope form, that passes through (5, -3) and has a slope of 2/3</em></u></h3><h3><u><em /></u> $y + 3 = \frac{2}{3}(x -5)$ <u><em /></u></h3>

<em><u>Solution:</u></em>

<em><u>The equation of line in point slope form is given as:</u></em>

$y - y_1 = m(x-x_1)$

Where, "m" is the slope of line

Given that,

slope = 2/3

$m = \frac{2}{3}$

The line passes through (5, -3)

Substitute m = 2/3 and $(x_1, y_1)$ = (5, -3) in point slope form

$y - (-3) = \frac{2}{3}(x -5)\\\\y + 3 = \frac{2}{3}(x -5)$

Thus equation of line in point slope form is found

8 0

3 years ago

A group of five people are all working on the same mathematics problem. On the night before it is due, they call each other to d

UkoKoshka [18]

Answer:

Minimum number of calls = 10

Step-by-step explanation:

Lets name the five people as A,B,C,D and E.

<u>On the night before ,each person talks to every other person atleast once that means A would talk to B,C,D and E atleast once.</u>

Lets start with A. He would talk to other 4 people which means there would be 4 phone calls made.

Now lets take B. He can talk to A,C,D and E. But A has already talked to C therefore to get minimum number of phone calls , B need not call A again. So he calls only C,D and E.

In case of C using similar logic he need to talk to only D and E.

For D , he talks to E alone.

E does not have to talk to anyone as he has already talked to everyone atleast once.

Total calls = 4 + 3 + 2 + 1

= 10

5 0

3 years ago

Help please! :(

Mekhanik [1.2K]

Answer:

5.51 meters

Step-by-step explanation:

3 0

3 years ago

In this equation, y-4/2=10, would i need to get the same denominator<br> y-4/2=10/2 = y-2=5?

Natasha_Volkova [10]

No actually you can just multiply both sides of the equation by 2 and get y-4=20. then add 4 to both sides to get y=24.

3 0

3 years ago

The overnight low temperature in Cassidy City was -27 Fahrenheit. The overnight low temperature in Shakerville was -6 Fahrenheit

koban [17]

Answer:

Shakerville 21° warmer

Step-by-step explanation:

-27 + -6 = 21

6 0

3 years ago

The value of y varies directly with x. If x= 3, then y= 21. What is the talue of x when y = 105?​

The value of y varies directly with x. If x= 3, then y= 21. What is the talue of x when y = 105?