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ella [17]
3 years ago
6

Help me please this is due tommorow

Mathematics
1 answer:
koban [17]3 years ago
3 0
Q(-3,-3)
R(3,2)
S(5,2)
T(5,-4)
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How do you estimate products
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to estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally. One method of estimation is to round all factors to the biggest digit (place value) they have.

Step-by-step explanation:

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A carpenter leans a 20-foot ladder against a building so that an angle of 60° is formed between the ladder and the ground. How m
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Mila buys 11/12 pounds of almonds and 5/6 pounds of pecans.
goldfiish [28.3K]

Answer: Check explanation.

Step-by-step explanation: I think its 0. Not sure. Hope this helped!

6 0
2 years ago
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year
puteri [66]

Answer:

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

Step-by-step explanation:

information given

\bar X=10.6 represent the sample mean  

\sigma=4.1 represent the population standard deviation

n=45 sample size  

\mu_o =12 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:  

Null hypothesis:\mu \geq 10  

Alternative hypothesis:\mu < 10  

The statistic is given by:

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing the info given we got:

We can replace in formula (1) the info given like this:  

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

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3 years ago
Does 12-(4x2)=(12-4)x(12-2)
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No. Solve each of the problems and see if they match. Do PEMDAS order of operations
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