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2 years ago

PLEASE I AM IN DESPERATE NEED OF HELP

Mathematics

1 answer:

SSSSS [86.1K]2 years ago

3 0

Answer:

I think the 3rd one

Step-by-step explanation:

Hope its right

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4. Tristan has a total of 30 dimes & nickels. The total value

adelina 88 [10]

Answer:

x/2 + x = 30 -> $2.50

20/2 + 20 = 30

X = 20, therefore:

dimes = 20

nickels = 10

4 0

3 years ago

Read 2 more answers

In a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Interne

Dvinal [7]

Answer:

b. Do not reject H0. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.7 hours.

Step-by-step explanation:

Given that in a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week. The mean of the sample observations was 12.9 hours.

$H_0: \bar x =12.7\\H_a: \bar x >12,7$

(Right tailed test at 5% level)

Mean difference = 0.2

Std error = $\frac{6}{\sqrt{1000} } \\=0.1897$

Z statistic = 1.0540

p value = 0.145941

since p >alpha we do not reject H0.

b. Do not reject H0. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.7 hours.

5 0

3 years ago

How many minutes did he/she play in all

Lerok [7]

Add the 3 fractions together.
Mixed fractions: 5 3/4 + 2 2/3 + 10 1/6
Convert to improper fractions and then add. Or simply use a calculator.

Total = 223/12 = 18 7/12

5 0

3 years ago

Read 2 more answers

What is proving triangles congruent by ASA and AAS

anastassius [24]

So ASA is angle side angle, and that means that if you prove that the side, and the side adjacent to that side and the angle between those two sides are all congruent to another triangle's sides and angle, the triangles are both congruent.
The AAS is angle angle side, or something, so say you have a triangle and you prove that two of its angles are congruent along with a side to another triangle's, then it's AAS. I understand where the confusion might be. I guess it's just a matter of what you state first in your proof?

6 0

3 years ago

pickupchik [31]

Answer:

3.50$ x 5.5 = 19.25 $

Step-by-step explanation:

8 0

2 years ago