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Nuetrik [128]
3 years ago
13

Circumference of a semi-circle with diameter 30

Mathematics
1 answer:
PolarNik [594]3 years ago
7 0
0.5 * 3.14 * 30 = 47.1
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determine a formula for the exponential function whose graph passes through the points (0,3)and (2,6)
Black_prince [1.1K]
The initial value is 3 (when x=0), and the multiplier is 2, when x=2. The equation can be written as
.. y = 3*(2^(x/2))

5 0
3 years ago
A set of data has a normal distribution with a mean of 5.1 and a standard deviation of 0.9. Find the percent of data between 4.2
Yuliya22 [10]

A set of data has a normal distribution with a mean of 5.1 and a standard deviation of 0.9. Find the percent of data between 4.2 and 5.1.

Answer: The correct option is B) about 34%

Proof:

We have to find P(4.2

To find P(4.2, we need to use z score formula:

When x = 4.2, we have:

z = \frac{x-\mu}{\sigma}

          =\frac{4.2-5.1}{0.9}=\frac{-0.9}{0.9}=-1

When x = 5.1, we have:

z = \frac{x-\mu}{\sigma}

          =\frac{5.1-5.1}{0.9}=0

Therefore, we have to find P(-1

Using the standard normal table, we have:

P(-1= P(z

                               =0.50-0.1587

                               =0.3413 or 34.13%

                               = 34% approximately

Therefore, the percent of data between 4.2 and 5.1 is about 34%

7 0
4 years ago
Please help with number one.
jek_recluse [69]

Answer:

yo mom

yo mom yo mom

yo mom yo mom

yo mom yo mom

yo mom yo mom

yo mom yo mom

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3 0
3 years ago
HELP. A triangle is dilated by a scale factor of 2 and the area of the original figure is x units.
7nadin3 [17]

Answer:

4x.

Step-by-step explanation:

If the scale factor is 2 then the area factor is 2^2 = 4.

So the area of the new triangle is 4*x.

8 0
3 years ago
70 divided by -3.5. How do I show the long division?
KiRa [710]

When dividing with negative and positive, the quotient is negative. 70 / -3.5 would be -2. Here is what the long division looks like:

4 0
3 years ago
Read 2 more answers
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