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erastovalidia [21]
3 years ago
5

How to multiply to the nearest ten

Mathematics
1 answer:
Tcecarenko [31]3 years ago
4 0
I'm not sure what you mean by this, but if you mean rounding, I got an answer.

Say you're rounding 24 to 30.
24 is closer to 20 than 30.

But if you were rounding 25 to 30, 25 would be closer to 30, not 20.
I guess it's kind of confusing.
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A map has a scale of ¾ inch represents 6 miles. If two towns are 32 miles apart, what is their distance apart on the map?
serious [3.7K]
3/4 in = 6 mi
? In = 32 miles

32 * 0.74 / 6 = 4 in
The distance apart is 4 in
7 0
2 years ago
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What is 1/10 of 12.5 miles?
vazorg [7]

Answer:

1.25

Step-by-step explanation:

(1/10) x 12.5

4 0
3 years ago
In one week the owner of Carly's Coffeehouse found that the number of orders for bagels was 2/3 the number of orders for chocola
Novosadov [1.4K]

Answer:

  210

Step-by-step explanation:

We can write the ratio as ...

  bagels : scones = 2 : 3

Then bagels are 2/(2+3) = 2/5 of the total.

  # bagels = (2/5)(525)

  # bagels = 210

3 0
3 years ago
company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of at least 26
podryga [215]

Answer:

t=\frac{25.02-26}{\frac{4.83}{\sqrt{50}}}=-1.435    

p_v =P(t_{(49)}  

If we compare the p value and the significance level assumed \alpha=0.05 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its significant lower than 26 so then the specification is satisfied.

Step-by-step explanation:

Data given and notation  

\bar X=25.02 represent the sample mean

s=4.83 represent the sample standard deviation

n=50 sample size  

\mu_o =26 represent the value that we want to test

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is at least 26 mpg, the system of hypothesis would be:  

Null hypothesis:\mu \geq 26  

Alternative hypothesis:\mu < 26  

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

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

t=\frac{25.02-26}{\frac{4.83}{\sqrt{50}}}=-1.435    

P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=50-1=49  

Since is a one sided test the p value would be:  

p_v =P(t_{(49)}  

Conclusion  

If we compare the p value and the significance level assumed \alpha=0.05 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its significant lower than 26 so then the specification is satisfied.

3 0
3 years ago
Someone, please help me with this asap! And no links or weird answers, please!
kupik [55]

Answer:

b = 4

Step-by-step explanation:

subtract by 5 on both sides. ur left with

{b}^{2}  = 16

square root b and 16. the square root cancels out b squared. find the square root of 16. the square root of 16 is 4

3 0
2 years ago
Read 2 more answers
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