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3 years ago

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There is a string of red and blue lights strung around a window . The red lights blink every 3 seconds , and the blue lights bli

nk every 5 seconds , how many times will they blink at the same time in one minutes ?

1 answer:

Nezavi [6.7K]3 years ago

3 0

Give us more evidence please

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The curves y = √x and y=(2-x) and the Cartesian axes form two distinct regions in the first quadrant. Find the volumes of rotati

makkiz [27]

Answer:

Step-by-step explanation:

If you graph there would be two different regions. The first one would be

$y = \sqrt{x} \,\,\,\,, 0\leq x \leq 1 \\$

And the second one would be

$y = 2-x \,\,\,\,\,, 1 \leq x \leq 2$ .

If you rotate the first region around the "y" axis you get that

$A_1 = 2\pi \int\limits_{0}^{1} x\sqrt{x} dx = \frac{4\pi}{5} = 2.51$

And if you rotate the second region around the "y" axis you get that

$A_2 = 2\pi \int\limits_{1}^{2} x(2-x) dx = \frac{4\pi}{3} = 4.188$

And the sum would be 2.51+4.188 = 6.698

If you revolve just the outer curve you get

If you rotate the first region around the x axis you get that

$A_1 =\pi \int\limits_{0}^{1} ( \sqrt{x})^2 dx = \frac{\pi}{2} = 1.5708$

And if you rotate the second region around the x axis you get that

$A_2 = \pi \int\limits_{1}^{2} (2-x)^2 dx = \frac{\pi}{3} = 1.0472$

And the sum would be 1.5708+1.0472 = 2.618

7 0

3 years ago

An angel whose measure is less than 90 is called an acute angel<br>

topjm [15]

Answer:

Yes, the statement is true

Btw, it's an angle not angel

Please mark as brainliest

3 0

2 years ago

Read 2 more answers

How do you illustrate quadratic equation in one varible?<br>

kvasek [131]

Answer:

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared. The standard form is ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable. One absolute rule is that the first constant "a" cannot be a zero.

Step-by-step explanation:

6 0

3 years ago

Please help with math problem give 5 star if do

Juliette [100K]

Answer:

C : -6

Step-by-step explanation:

Please Mark Me Brainliest!

4 0

2 years ago

Read 2 more answers

Write an equation in slope-intercept form of the line that passes through the points (7, – 4) and (3, -1).

Lena [83]

Answer:

Step-by-step explanation:

y2-y1/x2-x1

-1-(-4)/3-7

3/-4

y=mx+b

For the y coordinate it can be either -4,or -1

-4=3/-4x+b

b=13/4

8 0

3 years ago