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3 years ago

HELPPP PLEACECECECECEC

Mathematics

1 answer:

WITCHER [35]3 years ago

5 0

Answer:

60 degrees

Step-by-step explanation:

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Need help on this math problem

Alenkasestr [34]

Answer:

<BCF is the other alternate exterior angle.

Step-by-step explanation:

If you can, let me know if this is correct. :)

6 0

4 years ago

Convert the angle 0 = 310° to radians. Express your answer exactly.

guapka [62]

Answer:

5.425

Step-by-step explanation:

310° = 310° × π ÷ 180°

= 310° × 3.142 ÷ 180°

= 310° × 0.0175

= 5.425

4 0

3 years ago

You are contacted by a phone-in technical support business that is interested in some information about the amount of time their

Gennadij [26K]

Answer:

The average hold time is 10.47 minutes.

Step-by-step explanation:

Let X = time the customers of a phone-in technical support business spend on hold.

The population mean of the random variable X is, μ = 11 minutes.

The population standard deviation of the random variable X is, σ = 1.16 minutes.

A random sample size, n = 62 callers are selected.

According to the Central limit theorem if large samples (n > 30) are selected from an unknown population with mean μ and standard deviation σ then the sampling distribution of sample mean ( $\bar x$ ) follows a Normal distribution.

The mean of the sampling distribution of sample mean is:

$\mu_{\bar x}=\mu=11$

The standard deviation of the sampling distribution of sample mean is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{1.16}{\sqrt{62}}=0.147$

It is provided that $P(\bar X>a)=0.79$ .

Compute the value of a as follows:

$P(\bar X>a)=0.79\\P(Z>z)=0.79\\1-P(Z$

The value of z for the above probability is, z = -0.806.

The value of a is:

$z=\frac{a-\mu_{\bar x}}{\sigma_{\bar x}}\\-0.806=\frac{a-11}{0.147}\\a=11-(0.86\times 0.147)\\a=10.87$

Thus, the average hold time is 10.47 minutes.

3 0

3 years ago

What is the value of x? please I need step by step solution

Bond [772]

Step-by-step explanation:

We apply the log rule that states that if there is a number multiplied by a log, the number becomes exponent of the argument of the log:

3 = log(8) + log(x^3)

Now we have sum of logs. Another property tells us that 2 logs with the same base a, that are added together, are equal to the log in base a of the product of the arguments:

3 = log(8x^3)

Now for definition of log:

10 ^ 3 = x^3

Therefore:

x = 10

7 0

3 years ago

Read 2 more answers

A model rocket is launched directly upward at a speed of 15 meters per second from a height of 10 meters. The function f(t)=-4.9

Elenna [48]

Answer:1.53

Step-by-step explanation:

4 0

3 years ago