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3 years ago

I really need help number 11. Someone please help me it is so hard.

Mathematics

1 answer:

damaskus [11]3 years ago

4 0

Answer:

matt's gym charges more.

Explanation:

to reserve the basketball courts, tyrell has to pay:

1 reservations - $42 ($40 + $2)

2 reservations - $44 ($40 + $4)

3 reservations - $46 ($40 + $6)

4 reservations - $48 ($40 + $8)

when you compare this to the table of how much matt's gym charges, you'll notice that matt's gym charges more per court reservation than tyrell.

i hope this helps! :D

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-4x+6(x-1) simplify algebraic expression

vladimir1956 [14]

Hey there

the answer is

−4x+6(x−1)

Distribute:

=−4x+(6)(x)+(6)(−1)

=−4x+6x+−6

Combine Like Terms:

=−4x+6x+−6

=(−4x+6x)+(−6)

=2x+−6

thank you

. OFFICIALLYSAVAGE2003

7 0

4 years ago

When the distributive property is used to solve the equation 5(2 + 4) = 32 - 5, what is the next step?

coldgirl [10]

Answer:

no solution

Step-by-step explanation:

5(2 + 4) = 32 - 5

Simplify

5×6=32−5

simplify

30=32−5

Simplify

30=27

There is no solution

3 0

3 years ago

Brewed decaffeinated coffee contains some caffeine. We want to estimate the amount of caffeine in 8 ounce cups of decaf coffee a

rusak2 [61]

Answer:

We would have to take a sample of 62 to achieve this result.

Step-by-step explanation:

Confidence level of 95%.

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

$\alpha = \frac{1 - 0.95}{2} = 0.025$

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

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

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.

Assume that the standard deviation in the amount of caffeine in 8 ounces of decaf coffee is known to be 2 mg.

This means that $\sigma = 2$

If we wanted to estimate the true mean amount of caffeine in 8 ounce cups of decaf coffee to within /- 0.5 mg, how large a sample would we have to take to achieve this result?

We would need a sample of n.

n is found when $M = 0.5$ . So

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

$0.5 = 1.96\frac{2}{\sqrt{n}}$

$0.5\sqrt{n} = 2*1.96$

Dividing both sides by 0.5

$\sqrt{n} = 4*1.96$

$(\sqrt{n})^2 = (4*1.96)^2$

$n = 61.5$

Rounding up

We would have to take a sample of 62 to achieve this result.

8 0

3 years ago

Global mean temperature was changing the most rapidly in 2005. How quickly was the temperature changing in 2005

AysviL [449]

The temperature was changing at a rate of 2.925 degrees Celsius in 2005

<h3>How to determine the rate in 2005</h3>

From the graph (see attachment), we have the following ordered pair

(x,y) = (5,14.625)

The above means that, the temperature in 2005 is 14.625 degrees Celsius

So, the rate in 2005 is:

$Rate = \frac{14.625}{5}$

$Rate = 2.925$

Hence, the temperature was changing at a rate of 2.925 degrees Celsius in 2005