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3 years ago

Use a graphing calculator to solve the equation 3 tan 1/3 theta

Mathematics

2 answers:

tatiyna3 years ago

7 0

Answer:

he's correct ^

Step-by-step explanation:

lesantik [10]3 years ago

5 0

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A restaurant cook earns $8 per hour for the first 40 hours worked and $12 per hour for over time (hours worked in addition to th

Likurg_2 [28]

Answer:the answer is 560

Step-by-step explanation:

The reason is because you multiply to get 8 and 40 to get the amount for regular time which is 320.Then you subtract 60 from 40 which is 20.You multiply that amounnt by 12 because that is the overtime which will equal 240.Add them together and you get 560. ☺

6 0

3 years ago

The Highway Safety Department wants to study the driving habits of individuals. A sample of 40 cars traveling on a particular st

Ipatiy [6.2K]

Answer:

We need a sample size of at least 101

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What sample size is needed to estimate the true average speed to within 2 mph at 99% confidence?

We need a sample of at least n.

n is found when M = 2. So

$M = z*\frac{\sigma}{\sqrt{n}}$

$2 = 2.575*\frac{7.8}{\sqrt{n}}$

$2\sqrt{n} = 2.575*7.8$

$\sqrt{n} = \frac{2.575*7.8}{2}$

$(\sqrt{n})^{2} = (\frac{2.575*7.8}{2})^{2}$

$n = 100.85$

Rounding up

We need a sample size of at least 101

8 0

3 years ago

Read 2 more answers

Adam is a team leader for a packing and moving company today his team packed 90 boxes in 5 hours what is his teams packing rate

tamaranim1 [39]

$90 \div 5 = 18$
so it is 18 boxesan hour because 90÷5=18 and 18 is his team packing rate per hour

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3 years ago

Read 2 more answers

STATE THE MODULES THAT ARE INCLUDED WHEN LEARNING CALCULUS I.

Harrizon [31]

Answer:

Calculus is the branch of mathematics studying the rate of change of quantities (which can be interpreted as slopes of curves) and the length, area, and volume of objects. The chain rule is a formula for the derivative of the composition of two functions in terms of their derivatives.

5 0

3 years ago

Which of the following functions is a direct variation?

ololo11 [35]

Since k is constant (the same for every point), we can find k when given any point by dividing the y-coordinate by the x-coordinate. For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = = 3. Thus, the equation describing this direct variation is y = 3x.

5 0

3 years ago