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2 years ago

Jen and Kamlee are walking to school. After 20

Mathematics

1 answer:

iVinArrow [24]2 years ago

5 0

Answer:

Fghcv

Step-by-step explanation:

Gvhv

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Help? :3 Tysm if you do xD

Montano1993 [528]

The answer is A because 13 times 6 equals 78

8 0

3 years ago

9. The ratio of Joe's weight to Colin's is 2:3. Colin's weight is 36kg. If Joe gains

STatiana [176]

2:3
?:36

36/3=13
2x13=26

26:36

26+3=29

29:36

6 0

2 years ago

Solution of the equation

Bond [772]

Answer:

Step-by-step explanation:

The sides are not equal. You substitute the coordinates into the equation which gives you -11=-4 x 3

which solves to -11 = -12

therefore the sides are not equal

Use Symbolab for math problems, it helps alot especially on tests.

7 0

3 years ago

Complement and supplement of a 19

Tems11 [23]

well first the complement I 90-19=71

and supplement is 180-19=161

3 0

3 years ago

. A study of one thousand teens found that the number of hours they spend on social networking sites each week is normally distr

Gnesinka [82]

We are given the following data:

Sample Size = n = 1000

Sample Mean = u = 15 hours

Population Standard Deviation = s = 2 hours

Since we know the population standard deviation, we can use z distribution to find the confidence interval about the mean. z value for 95% confidence interval is 1.96.

Formula for the confidence interval is:

$(u-z\frac{s}{\sqrt{n}} , u+z\frac{s}{\sqrt{n}})$

Using the values in the formula, we get:

$(15-1.96\cdot\frac{2}{\sqrt{1000}}, 15+1.96\cdot\frac{2}{\sqrt{1000}})\\ \\ (14.88,15.12)$

Therefore, the 95% confidence interval about the population mean is 14.88 hours to 15.12 hours. So B option is the correct answer.

4 0

3 years ago

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