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asambeis [7]
3 years ago
7

Marissa dug three fifths of a hole in one tenth of an hour. Find the rate in holes per hour

Mathematics
1 answer:
snow_lady [41]3 years ago
3 0

Answer:

Step-by-step explanation:

This might be easier to do in decimals. Let's try it.

3/5 = 0.6

1/10 = 0.1

rate = holes / hours

rate = 0.6/0.1

rate = 6 holes per hour

Try it with fractions.

rate =       \frac{\frac{3}{5} }{\frac{1}{10} }    Invert and multiply the 1/10

rate =  \frac{3}{5} *\frac{10}{1} = 30/5 = 6

It's the same answer. Pick the method that you feel most comfortable with.

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Identify the type of function represented by... please help
Vladimir [108]

Answer:

Exponential decay.

Step-by-step explanation:

You can use a graphing utility to check this pretty quickly, but you can also look at the equation and get the answer. Since the function has a variable in the exponent, it definitely won't be a linear equation. Quadratic equations are ones of the form ax^2 + bx + c, and your function doesn't look like that, so already you've ruled out two answers.

From the start, since we have a variable in the exponent, we can recognize that it's exponential. Figuring out growth or decay is a little more complicated. Having a negative sign out front can flip the graph; having a negative sign in the exponent flips the graph, too. In your case, you have no negatives; just 2(1/2)^x. What you need to note here, and you could use a few test points to check, is that as x gets bigger, (1/2) will get smaller and smaller. Think about it. When x = 0, 2(1/2)^0 simplifies to just 2. When x = 1, 2(1/2)^1 simplifies to 1. Already, we can tell that this graph is declining, but if you want to make sure, try a really big value for x, like 100. 2(1/2)^100 is a value very very very veeery close to 0. Therefore, you can tell that as the exponent gets larger, the value of the function goes down and gets closer and closer to zero. This means that it can't be exponential growth. In the case of exponential growth, as the exponent gets bigger, your output should increase, too.

3 0
3 years ago
A ball is thrown into the air with an upward velocity of 32 ft/s. Its height (h) in feet after t seconds is given by the functio
Natasha2012 [34]
For this case we have the following equation:
 h = -16t ^ 2 + 32t + 6
 Deriving we have:
 h '= -32t + 32
 We equal zero and clear t:
 -32t + 32 = 0
 32t = 32
 t = 32/32
 t = 1 s
 Then, the maximum height is given by:
 h (1) = -16 * (1) ^ 2 + 32 * (1) + 6
 h (1) = 22 feet
 Answer:
 
It takes the ball to reach its maximum height about:
 
t = 1 s
 
The ball's maximum height is:
 
h (1) = 22 feet
6 0
3 years ago
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Oksi-84 [34.3K]
The answer is 1 : 1 : square root of 3
3 0
3 years ago
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strojnjashka [21]

Answer:

 

Surface area

103.109in²

Step-by-step explanation:

Hope this helps! I would appreciate if you make me brainliest!

4 0
2 years ago
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The angle formed by the intersection of a secant and a tangent is equal to the sum of the measures of the intercepted arcs.
Ksivusya [100]

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Step-by-step explanation:

The measure of the created angle is equal to the difference of the measure of the arcs.

5 0
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