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Irina-Kira [14]
3 years ago
6

Heyy!!

Mathematics
1 answer:
Semmy [17]3 years ago
8 0

Answer:

3/4 times 3

Step-by-step explanation:

9/4 in fraction form, so it equal 2 1/4. Hope this helps

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In the afternoon, a television station reported the temperature as 3.7°F . That evening, they reported the temperature as −1.5°F
fgiga [73]

Answer:

i am in k12.com online school and i just took the test.

the answer is 3.7−(−1.5).

hope it helped

3.7−(−1.5) is the answer.  

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3 years ago
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Please help me find the value of x​
-Dominant- [34]

Answer:

67°

Step-by-step explanation:

Corresponding angles are equal in parallel lines.

Here, ∠acb and ∠aed are corresponding angles for lines bc and de

hence ∠aed = ∠acb = 39

in triangle ade,

x + 74 + 39 = 180 (angle sum property of a triangle)

x = 67°

3 0
3 years ago
50% of a number is 32 <br> what is the number
Paladinen [302]

Answer:

64

Step-by-step explanation:

Half (50%) of 64 would be 32

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3 years ago
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The Environmental Protection Agency (EPA) publishes fuel economy values that are known to be good estimates of the fuel economy
r-ruslan [8.4K]

Answer:

The 90% confidence interval for the mean combined fuel economy for Ford Explorers is between 22.95 and 23.63 mpg.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 16 - 1 = 15

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 15 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.7531

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.7531\frac{0.78}{\sqrt{16}} = 0.34

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 23.29 - 0.34 = 22.95 mpg

The upper end of the interval is the sample mean added to M. So it is 23.29 + 0.34 = 23.63 mpg

The 90% confidence interval for the mean combined fuel economy for Ford Explorers is between 22.95 and 23.63 mpg.

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Vanessa can make 5 portions
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