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Leya [2.2K]
3 years ago
6

Tim plans to spend 40 hours on exercise training to earn a private trainer license. He has saved $2,000

Mathematics
2 answers:
grigory [225]3 years ago
6 0

Answer:

round it then divide it by 5

Step-by-step explanation:

kramer3 years ago
3 0
The answer is for 50$ per hour Tim will be able to complete the training for private license.
Step-by-step explanation:
You divide 2,000 by 40.
= 2,000/40 which equals 50. so, Tim can spend $50 on training if he plans to do 40 hours.
This situation can be easily solved since Tim only wants to know the amount he needs to pay for an hour of training.
for 40 hours = 2,000$
for 1 hour = 2,000/40
= 50$ per hour
So for 50$ per hour Tim will be able to spend 40 hours on training.
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<span>The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.</span>
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3 years ago
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Convert 30,000 ML into L
lakkis [162]

Answer:

30 liters

Step-by-step explanation:

To me it's kind of like multiplying and dividing.

So, what I did was 30,000 divided by 30 and got 1,000.

1,000 x 30 = 30,000.

That's what I did. You probably have your own way of doing it, but the answer is 30. I'm sorry if my explanation isn't good enough but I tried. Thanks for the question and enjoy your answer :)

6 0
2 years ago
A teacher was interested in knowing the amount of physical activity that his students were engaged in daily. He randomly sampled
klasskru [66]

Answer:

The standard error of the mean is 4.5.

Step-by-step explanation:

As we don't know the standard deviation of the population, we can estimate the standard error of the mean from the standard deviation of the sample as:

\sigma_{\bar{x}}\approx\frac{s}{\sqrt{n}}

The sample is [30mins, 40 mins, 60 mins, 80 mins, 20 mins, 85 mins]. The size of the sample is n=6.

The mean of the sample is:

\bar{x}=\frac{1}n} \sum x_i =\frac{30+40+60+80+20+85}{6}=52.5

The standard deviation of the sample is calculated as:

s=\sqrt{\frac{1}{n-1}\sum (x_i-\bar x)^2} \\\\ s=\sqrt{\frac{1}{5}\cdot ((30-52.5)^2+(40-52.5)^2+(60-52.5)^2+(80-52.5)^2+(20-52.5)^2+(85-52.5)^2}\\\\s=\sqrt{\frac{1}{5} *3587.5}=\sqrt{717.5}=26.8

Then, we can calculate the standard error of the mean as:

\sigma_{\bar{x}}\approx\frac{s}{\sqrt{n}}=\frac{26.8}{6}= 4.5

6 0
3 years ago
A triangular sail has a base length of 2.5 meters.The area of the sail is 3.75 square meters.How tall is the sail?
love history [14]
Area of a triangle = 1/2 x base x height

--------------------------------------
Find Height :
--------------------------------------
3.75  = 1/2 x 2.5 x height

3.75 = 1.25 x height 

height = 3.75 ÷ 1.25

height = 3 meters

----------------------------------------------------------------------------
Answer: The height is 3 meters.
----------------------------------------------------------------------------
7 0
2 years ago
Choose the best estimate for the length of a piece of notebook paper.
Fynjy0 [20]

Answer:

11 in

Step-by-step explanation:

Standard paper is 11 x 8 inches

5 0
3 years ago
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