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3 years ago

5x-y=35 67271225=444

1 answer:

kramer3 years ago

8 0

Okay well, I am a little confused by this equation, but to solve 5x-y=35 you would, here:

<span>Simplifying
5x + -1y = 35

Solving
5x + -1y = 35 Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.

Add 'y' to each side of the equation.
5x + -1y + y = 35 + y

Combine like terms:
-1y + y = 0 5x + 0 = 35 + y 5x = 35 + y

Divide each side by '5'.
x = 7 + 0.2y

Simplifying
x = 7 + 0.2y</span>

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A iron which is cost 1500 was reduced by 20% what is the new price

aniked [119]

It would be: 1500 - 1500*20/100 = 1500-300 = 1200

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3 years ago

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Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the curves about the given

rewona [7]

Answer:

5.81

Step-by-step explanation:

The method of cylindrical shells uses this formula:

$\int\limits^a_b {2 \pi * shellRadius * shellHeight} \, dx$

It integrates the pieces of area in the region.

In this case:

$2 \pi * \int\limits^2_0 {x * cos(\frac{\pi}{4} * x)} \, dx$

Integrating by computer:

$2*\pi*(\frac{4}{\pi^2}*(\pi*x*sin(\frac{\pi}{4}*x) + 4*cos(\frac{\pi}{4}*x)))$

Evaluating between 0 and 2

$2\pi * (\frac{4}{\pi^2}*(\pi*2*sin(\frac{\pi}{4}*2) + 4*cos(\frac{\pi}{4}*2)) - \frac{4}{\pi^2}*(\pi*0*sin(\frac{\pi}{4}*0) + 4*cos(\frac{\pi}{4}*0))) = 5.81$

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3 years ago

A store buys a jacket for $20 and sells it to a customer for 80% more the price what is the answer

Karolina [17]

$16 because 80%* 20= 16 hope this helped

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3 years ago

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Ben frank is an electrician who installs lighting fixtures. He charges (in dollars) his clients 15h + 40f where h is the number

Mandarinka [93]

Hi there! The answer is $465

The total cost can be found using the formula
$15h + 40f$

To find the amount of money Ben Frank charges, we need to plug in the data from the question.

h = number of hours worked = 7
f = number of fixtures installed = 9

$15 \times 7 + 40 \times 9 = 105 + 360 = 465$
Therefore, Ben Frank charges $465

~ Hope this helps you!

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3 years ago

What is the value of f(-2)?

kvasek [131]

Hi, here is the solution...

We need to find the value of f(-2).

The value of x = -2 comes under the second function f(x) = 4x, where -3≤x≤-1.

To find the value of f(-2), plug in x = -2 in f(x) = 4x

f(-2) = 4 (-2)

f(-2) = -8.

The answer is -8.

Thank you :)

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3 years ago