3 years ago

Shirt is 18 dollars there’s a 20% discount

Mathematics

2 answers:

Sliva [168]3 years ago

7 0

Answer:

$14.4

Step-by-step explanation:

First set a porpotion of 20/100 = x/18

Then do 20x18=360

360 Divided by 100=3.6

So 18-3.6=14.4

skelet666 [1.2K]3 years ago

4 0

Answer:

$14.40

Step-by-step explanation:

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The variables y and x have a proportional relationship, and y = 5 when x = 4. What is the value of x when y = 8? Enter your answ

Charra [1.4K]

Answer

Find out the what is the value of x when y = 8 .

To prove

As given

The variables y and x have a proportional relationship.

$y \propto x$

y = kx

Where k is the constant of proportionality.

As y = 5 when x = 4

Put in the above

5 = 4k

$k = \frac{5}{4}$

Now find out the value of x , when y = 8

$8 = \frac{5\times x}{4}$

$x = \frac{8\times 4}{5}$

x= 6.5

Therefore when y = 8 than x = 6.4

7 0

3 years ago

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The number of boys in a school is 2000 less than the number of girls .Then find the number of girls in the school,if the total n

melamori03 [73]

Answer:

8000 girls

Step-by-step explanation:

3 0

3 years ago

I need help understanding how to do the problem

notsponge [240]

So.. if you notice the picture below

is really just 3/4 of a cylinder, or, a full cylinder, and then you slice 1/4 off of it
notice the right-angle in your picture at the bottom, is cut at a right-angle, meaning, the cutout is 1/4 of the volume

so $\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\qquad 
\begin{cases}
r=radius\\
h=height
\end{cases}\qquad \frac{3}{4}\textit{ of that}\implies \cfrac{3}{4}\cdot \pi r^2 h$