All categories

3 years ago

Find the area of the triangle with 12, 15, and 105°

Mathematics

1 answer:

Damm [24]3 years ago

7 0

Answer:

A≈86.93m²

Step-by-step explanation:

You might be interested in

If two lines intersect, they intersect at two different points. is the statement sometimes, always, or never true.

ivanzaharov [21]

I would say the statement is sometimes true. Straight lines can only intersect at one point. However, sometimes lines overlap and intersect along the entire line.

5 0

3 years ago

The human heart beats an average of 4,320 times an hour. At this rate, about how many times will a person's heart beat in one fu

AlekseyPX

103,680

$4320 \times 24$

4 0

3 years ago

This number of tiles to make a rectangle that is 5 tiles wide

Artemon [7]

Its 10 i just times by 2 then i got a answer then i looked and said 5 each side seems right

8 0

3 years ago

Calculate the value of the sample variance. Round your answer to one decimal place. 9_5,9_5,2,9_5

Ugo [173]

Answer:

$s^2 = 0.01$

Step-by-step explanation:

Given

Values: 9/5, 9/5, 2, 9/5

Required

Calculate the sample variance

Sample variance is calculated using:

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$

First, we calculate the mean

$\overline x = \frac{\sum x}{n}$

$\overline x = \frac{9/5 + 9/5 + 2 + 9/5}{4}$

$\overline x = \frac{7.4}{4}$

$\overline x = 1.85$

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$ becomes

$s^2 = \frac{(9/5 - 1.85)^2+(9/5 - 1.85)^2+(2 - 1.85)^2+(9/5 - 1.85)^2}{4 - 1}$

$s^2 = \frac{(-0.05)^2+(-0.05)^2+(0.15)^2+(-0.05)^2}{4 - 1}$

$s^2 = \frac{0.0025+0.0025+0.0225+0.0025}{3}$

$s^2 = \frac{0.03}{3}$

$s^2 = 0.01$

<em>Hence, the variance is 0.01</em>

5 0

2 years ago

What’s the value of x? <br> y= 5x + 9<br> y= -x + 3

ser-zykov [4K]

Answer:

x=-1 y=4 (-1,4)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers