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3 years ago

What is the perimeter of triangle ABC

1 answer:

7 0

Well since we don't know the measurements of said triangle, I can only give you the formula for perimeter of a triangle.

Add each side length together to get the perimeter. For example, say we have a triangle with the side lengths 8, 9, and 3. To find the perimeter of this triangle, add each side length together.

8 + 9 + 3 = 20

The perimeter would be 20, or the sum of the given sides.

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Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of tim

DaniilM [7]

Answer:

$t = 0.875$

Step-by-step explanation:

Given

Brand A Brand B

$n_ 1= 12$ $n_2 = 12$

$\bar x_1 = 21.8$ $\bar x_2 = 18.9$

$\sigma_1 = 8.7$ $\sigma_2 = 7.5$

Required

Determine the test statistic (t)

This is calculated as:

$t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}$

Calculate s using:

$s = \sqrt{\frac{(n_1-1)*\sigma_1^2+(n_2-1)*\sigma_2^2}{n_1+n_2-2}}$

The equation becomes:

$s = \sqrt{\frac{(12-1)*8.7^2+(12-1)*7.5^2}{12+12-2}}$

$s = \sqrt{\frac{1451.34}{22}}$

$s = \sqrt{65.97}$

$s = 8.12$

So:

$t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}$

$t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{12} + \frac{1}{12}}}$

$t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{6}}}$

$t = \frac{21.8 - 18.9}{8.12 * 0.408}}$

$t = \frac{2.9}{3.31296}}$

$t = 0.875$

3 0

3 years ago

There are 180 days in school year and you get 3 assignments per day. How many total assignments do you get in 1 school year

m_a_m_a [10]

Answer:

260 assignments in a school year

Step by Step:

There are 180 days in a school year and you do 3 assignments per day you multiple 180 and 3

6 0

3 years ago

13) (-2. – 5v).- (-4v – 2) Can you help a girl out

irga5000 [103]

Answer:

If simplifed, it'll be -v

Step-by-step explanation:

8 0

3 years ago

)

Leno4ka [110]

Answer:

10 in

Step-by-step explanation:

8 0

3 years ago

0.05x =0.5 can someone please helppppp!!!!!!!!!!

Tcecarenko [31]

Answer:

x equals 10

Step-by-step explanation:

you are moving the 5 from the hundredth value to the tenth, meaning it is becoming a higher number. for this one, just multiply by 10.

4 0

2 years ago