All categories

2 years ago

Six calculators cost 180 determine the cost per calculator

Mathematics

1 answer:

Gemiola [76]2 years ago

4 0

Each calculator would cost 30 dollars (sorry if this isn't what you mean)

You might be interested in

Solve the following equation;<br> 6x+3y=13<br> -9x-4y=-17

Lana71 [14]

You can not do the first one because the things do not add up

8 0

3 years ago

Read 2 more answers

Find the derivative

zalisa [80]

First use the chain rule; take $y=\dfrac{x+5}{x^2+3}$ . Then

$\dfrac{\mathrm df}{\mathrm dx}=\dfrac{\mathrm df}{\mathrm dy}\cdot\dfrac{\mathrm dy}{\mathrm dx}$

By the power rule,

$f(x)=y^2\implies\dfrac{\mathrm df}{\mathrm dy}=2y=\dfrac{2(x+5)}{x^2+3}$

By the quotient rule,

$y=\dfrac{x+5}{x^2+3}\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{(x^2+3)\frac{\mathrm d(x+5)}{\mathrm dx}-(x+5)\frac{\mathrm d(x^2+3)}{\mathrm dx}}{(x^2+3)^2}$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{(x^2+3)-(x+5)(2x)}{(x^2+3)^2}$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{3-10x-x^2}{(x^2+3)^2}$

$\dfrac{\mathrm df}{\mathrm dx}=\dfrac{2(x+5)}{x^2+3}\cdot\dfrac{3-10x-x^2}{(x^2+3)^2}$

$\implies\dfrac{\mathrm df}{\mathrm dx}=\dfrac{2(x+5)(3-10x-x^2)}{(x^2+3)^3}$

6 0

3 years ago

Mr. Akmal owns a bakery, he bought 100 eggs this week.15 out of them cracked. Find the percentage of cracked eggs.

marishachu [46]

Answer:

Step-by-step explanation:

$\frac{15}{100}$ ×100 = 15%

8 0

3 years ago

A cylinder has been cut out of a solid. Find the volume of the remaining solid. Round answer to the nearest tenth.

Vladimir79 [104]

Answer:

98.19

Step-by-step explanation:

Volume of whole cube minus volume of cylinder. volume of cylinder is pi x r^2 x h

3 0

3 years ago

Using only addition, how do you add eight 8’s and get the number 1000?

prisoha [69]

Answer: 888+88+8+8+8 = 1,000

Step-by-step explanation: First of all line all your eights' up and then split them

6 0

3 years ago