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Neporo4naja [7]
3 years ago
11

Find sin(x). I need help.

Mathematics
1 answer:
charle [14.2K]3 years ago
8 0

Answer:

.8, 12/15, or 4/5

Step-by-step explanation:

sin(x) is opposite/hypotenuse, so its 12/15, or 4/5, or .8

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Four friends each fipped a coin different numbers of times.
Gelneren [198K]

Answer:

Sarah

Step-by-step explanation:

Alice: 75%

Mary: 80%

Sarah: 85%

Ellen: 60%

4 0
3 years ago
Eliza started her savings account with $100. Each month she deposits $25 into her account. Determine the average rate of change
Afina-wow [57]
First, lets create a equation for our situation. Let x be the months. We know four our problem that <span>Eliza started her savings account with $100, and each month she deposits $25 into her account. We can use that information to create a model as follows:
</span>f(x)=25x+100
<span>
We want to find the average value of that function </span>from the 2nd month to the 10th month, so its average value in the interval [2,10]. Remember that the formula for finding the average of a function over an interval is: \frac{f(x_{2})-f(x_{1})}{x_{2}-x_{1} }. So lets replace the values in our formula to find the average of our function:
\frac{25(10)+100-[25(2)+100]}{10-2}
\frac{350-150}{8}
\frac{200}{8}
25

We can conclude that <span>the average rate of change in Eliza's account from the 2nd month to the 10th month is $25.</span>
6 0
3 years ago
Which equation has a constant of proportionality equal to 1/2<br><br> Choose 1 answer:
Amiraneli [1.4K]
For equations that model direct variation, they are of the form y = kx, where k is the constant of proportionality.

So, for there to be a constant of proportionality of 1/2, the equation should be y = 1/2 x.

This is the same as y = 3/6 x (since 1/2 = 3/6), so the answer is C.
6 0
3 years ago
A randomly chosen subject arrives for a study of exercise and fitness and begins walking on a treadmill at a brisk pace. which o
Flauer [41]
A discrete variable is a type of variable which contains a finite number of values. It usually takes its values from the set of whole numbers.

From the random variable described, the random variable that is descrete is "You measure the maximum heart rate in beats per minute".

This is because, heart rate cannot be partitioned it only takes counting number values. You either have 1 beat per minutes, 2 or 3 and so on beats per minute. But you cannot have 2.5 or 3.8 and so on beats per minute.
So heart rate cannot take decimal or fractional values and hence, it is a discrete random variable.
4 0
3 years ago
Emily paid 287.50 in taxes to the school. This years taxes were 15% increase from last year. What did Emily pay?
Vadim26 [7]
$287.50+17%=$330.625
6 0
3 years ago
Read 2 more answers
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