All categories

3 years ago

The value of y varies directly with x.If y=100 when x=4,what is the value of y when x=8?

Mathematics

1 answer:

Yakvenalex [24]3 years ago

5 0

Answer:

200

Step-by-step explanation:

If y varies directly with x, this means that, for a value k, k*x=y. Therefore, if k*4=100, and k stays the same, k*8=k*4*2=100*2=200

You might be interested in

Paul was thinking of a number. Paul divides by 7 then adds 1 to get an answer of 10. Form an equation with x from the informatio

Vitek1552 [10]

Answer:

x/7 + 1 = 10

Step-by-step explanation:

x/7 + 1 = 10

4 0

3 years ago

You had $23 to spend on three raffle tickets. After buying them you had $17.

Viktor [21]

Answer:

Step-by-step explanation:

$23-3x=17$

$-3x=-6$

$x=2$

Therefore, each raffle ticket cost $2.

3 0

2 years ago

Read 2 more answers

Given two vectors A=2i+3j+4k,B=i-2j+3k find the magnitude and direction of sum<br>(physics question)

Law Incorporation [45]

Answer:

$Magnitude =\sqrt{59} \\\\Direction \: of \: \overrightarrow{A + B} = \frac{3}{\sqrt {59}} , \:\frac{1}{\sqrt {59}} , \:\frac{7}{\sqrt {59}}$

Step-by-step explanation:

A=2i+3j+4k

B=i-2j+3k

Sum of the vectors:

A + B = 2i+3j+4k + i-2j+3k = 3i + j + 7k

$Magnitude =\sqrt{3^2 + 1^2+ 7^2} \\\\Magnitude =\sqrt{9+1+49} \\\\Magnitude =\sqrt{59}$

Direction of the sum of the vectors:

$\widehat{A + B} =\frac{\overrightarrow{A + B}}{Magnitude\: of \:\overrightarrow{A + B}} \\\\\widehat{A + B} =\frac{3i + j + 7k}{\sqrt {59}} \\\\\widehat{A + B} =\frac{3}{\sqrt {59}} i +\frac{1}{\sqrt {59}} j+\frac{7}{\sqrt {59}} k\\\\Direction \: of \: \overrightarrow{A + B} = \frac{3}{\sqrt {59}} , \:\frac{1}{\sqrt {59}} , \:\frac{7}{\sqrt {59}} \\\\$

3 0

3 years ago

3. How many gallons of ice-cream are produced each<br>week?

andrezito [222]

Answer:

Each week 26,849,315 Gallons of ice cream is produced each week

Step-by-step explanation:

To find this we see how much is made in a year which is 1.4 billion gallons in the U.S.

To see how much is in a day we divide 1.4 billion by 365. Which is 3835616 Then we multiply it by 7 because there is 7 days in a week and the answer is 26849315

5 0

3 years ago

Can someone please solve this?

forsale [732]

$|-8-6|=|-14|=14$

4 0

3 years ago