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3 years ago

I urgently need the answer to number 6 with the work shown

Mathematics

2 answers:

Tatiana [17]3 years ago

5 0

First option is correct

bogdanovich [222]3 years ago

3 0

Answer:

Here you go! Work shown too.

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Maria compró una blusa con valor de $300, sólo pagó $240. ¿Cuál fue el porcentaje de descuento que le hicieron?

Nostrana [21]

300 - 240 = 60

60 = 20%

Respuesta:El descuento fue del 20%.

Espero te sirva :

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2 years ago

What does change mean in math PLEASE HELP AND ANSWER RIGHT AWAY IF YOU AVAILABLE

Mazyrski [523]

Answer:

"The mean is the average of the numbers: a calculated "central" value of a set of numbers. To calculate it: add up all the numbers, then divide by how many numbers there are." -- Math is Fun

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3 years ago

How to calculate distance around a pool 20 by 25 if u walk around ten times

irina1246 [14]

Answer:

900

Step-by-step explanation:

perimeter: P = 2w + 2h

P = 2(20) + 2(25)

P = 40 + 50

P = 90

Multiply perimeter by 10:

90 × 10 = 900

3 0

3 years ago

Pumping stations deliver oil at the rate modeled by the function D, given by d of t equals the quotient of 5 times t and the qua

goblinko [34]

<h2>Hello!</h2>

The answer is: There is a total of 5.797 gallons pumped during the given period.

To solve this equation, we need to integrate the function at the given period (from t=0 to t=4)

The given function is:

$D(t)=\frac{5t}{1+3t}$

So, the integral will be:

$\int\limits^4_0 {\frac{5t}{1+3t}} \ dx$

So, integrating we have:

$\int\limits^4_0 {\frac{5t}{1+3t}} \ dt=5\int\limits^4_0 {\frac{t}{1+3t}} \ dx$

Performing a change of variable, we have:

$1+t=u\\du=1+3t=3dt\\x=\frac{u-1}{3}$

Then, substituting, we have:

$\frac{5}{3}*\frac{1}{3}\int\limits^4_0 {\frac{u-1}{u}} \ du=\frac{5}{9} \int\limits^4_0 {\frac{u-1}{u}} \ du\\\\\frac{5}{9} \int\limits^4_0 {\frac{u-1}{u}} \ du=\frac{5}{9} \int\limits^4_0 {\frac{u}{u} -\frac{1}{u } \ du$