3 years ago

You complete 40% of ur hw problems before dinner what fraction of the problems did u complete before dinner

Mathematics

1 answer:

yuradex [85]3 years ago

3 0

Is there any answer choices? I believe it is 2/5

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A sphere with radius r has a volume of 100 square units. What is the volume of a sphere with a radius 3r ?

pshichka [43]

Answer:

300

Step-by-step explanation:

V=4/3 * pi* r^3

If you sub in 100 for V, do some manipulation you get r cubed to equal 23.78.

Now put the value of 23.78 in for r cubed and V comes out to be 300

7 0

3 years ago

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Help please will mark best answer

77julia77 [94]

I figured out the first question, the second one in lost on.

$\frac{(6-x)}{x^2+3x-28} / \frac{x^2-36}{x^2+5x-36}$

Factor both of the equations, numerator and denominator

$\frac{(6-x)}{(x+7)(x-4)}* \frac{(x+6)(x-6)}{(x+9)(x-4)}$

Cancel the like factors *excuse the zero im just showing you*

$\frac{(0)}{(x+7)} *\frac{(x+6)}{(x-9)}$

Combine frunctions

$\frac{(6+x)}{(x-9)(x+7)}$

x-9=0
x+7=0

Restrictions are 9 and -7

4 0

4 years ago

If point P is at the center of the circle, and the length of AB equals 12 inches, which is the length of AP?

Natasha2012 [34]

Answer:

B. 6 inches

Step-by-step explanation:

We know that the lenght of AB is 12 inches. Given that any two point that passes through the center P equals to the diameter, we know that AP is going to be half of diameter.

So, if AB = 12, then P = AB/2 = 6 inches.

4 0

4 years ago

The human ear disinguish sounds between 20 hz and 20,000 hz, inclusive write a compound inequality for the problem.

worty [1.4K]

20 > x < 20,000

X = Range of human ear

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4 years ago

Which expression is equivalent to −1.3+(−4.9)+(−2.6) ?

Elenna [48]

Answer:

B −1.3−(4.9+2.6)

<h2>Please mark me as brainlyist</h2>

3 0

4 years ago

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