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wlad13 [49]
3 years ago
7

Find all the powers of 4 in the range 4 Through 1000

Mathematics
2 answers:
Delvig [45]3 years ago
8 0
We want to find all 4^x less than 1000 and greater than or equal to 4. They are 4, 4*4, 4*4*4... or 4, 16, 64, 256.

Anettt [7]3 years ago
7 0
(4⁰  =  1  too small)

4¹  =  4

4² = 16

4³ = 64

4⁴ = 256

(4⁵ = 1,024  too big)

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The triangle shown is a right triangle. Create the equation to be used to find the missing lengths.
telo118 [61]
The equation used to find the missing lengths:
9 = __SR (5^2 + x^2)__
As long as it is a right triangle, this is called the Pythagorean Theorem
{9}^{2}  =  {x}^{2}  +  {5}^{2}  \\  \sqrt{ {9}^{2} }  =  \sqrt{( {x}^{2}  +  {5}^{2} )}  \\ 9= \sqrt{( {x}^{2}  +  {5}^{2} )}


** FYI- if you wanted to SOLVE FOR THE MISSING SIDE X, then just switch around the original equation solving in terms of x:
{9}^{2}  =  {x}^{2}  +  {5}^{2}  \\  {x}^{2}  =  {9}^{2}  -  {5}^{2}  \\ x= \sqrt{( {9}^{2} -  {5}^{2})}  =  \sqrt{(81 - 25)}  \\
x =  \sqrt{56}  =  \sqrt{(8 \times 7)}   \\ x=  \sqrt{(4 \times 14)}  =  \sqrt{4}\times  \sqrt{14}  \\ x = 2 \sqrt{14}

6 0
3 years ago
The surface area of a melting snowball decreases at a rate of3.8cm2/min. Find the rate at which its diameter decreases when the
Scorpion4ik [409]

Answer:

Step-by-step explanation:

This is a pretty basic related rates problem. I'm going to go through this just like I do in class when I'm teaching it to my students.

We see we have a snowball, which is a sphere. We are talking about the surface area of this sphere which has a formula of

S=4\pi r^2

In the problem we are given diameter, not radius. What we know about the relationship between a radius and a diameter is that

d = 2r so

\frac{d}{2}=r Now we can have the equation in terms of diameter instead of radius. Rewriting:

S=4\pi(\frac{d}{2})^2 which simplifies to

S=4\pi(\frac{d^2}{4}) and a bit more to

S=\pi d^2 (the 4's cancel out by division). Now that is a simple equation for which we have to find the derivative with respect to time.

\frac{dS}{dt}=\pi*2d\frac{dD}{dt} Now let's look at the problem and see what we are given as far as information.

The rate at which the surface area changes is -3.8, and we are looking for \frac{dD}{dt}, the rate at which the diameter is changing, when the diameter is 13. Filling in:

-3.8=\pi(2)(13)\frac{dD}{dt} and solving for the rate at which the diameter is changing:

-\frac{3.8}{26\pi}=\frac{dD}{dt} and divide to get

\frac{dD}{dt}=-.459\frac{cm}{min} Obviously, the negative means that the diameter is decreasing.

7 0
3 years ago
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mihalych1998 [28]
Hey Kiddo.

The domain is the first number of each set.
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5 0
3 years ago
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Answer: Gear B turns 90 times when gear A turns 60 times

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3 years ago
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