Jamie is making a mosaic out of tiles cut in the shape of equilateral triangles. What is the perimeter of each triangle?

Mathematics

2 answers:

frutty [35]3 years ago

6 0

Answer: Its 15

Step-by-step explanation:

All you had to do was add 9 + 6 because the 3 to triangle by eah are worth 3 and so are the bottom ones, to that makes 9 + 6 so just add and get 15 if that makes sence, i had the same question.

astraxan [27]3 years ago

3 0

Answer:

There needs to be more information. We at least need to know what one of the side measurements for each triangle are. Only then can we give you the answer.

Step-by-step explanation:

You might be interested in

Drag expressions to complete each equation.

Ainat [17]

A^-b is the same as 1/a^b.

When there is a negative power, place the number and power over 1.

a^b/a^c = a^(b-c).

c is a negative power, because it is being divided, and is underneath b, which is a positive (and so it stays in the numerator).

a^c/b^c = (a/b)^c

Inside this one, the power of c is distributed to all numbers inside the parenthesis, in this case a and b.

hope this helps

3 0

3 years ago

Read 2 more answers

In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there

Vedmedyk [2.9K]

Answer:

a) 151lb.

b) 6.25 lb

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$ .

In this problem, we have that:

$\mu = 151, \sigma = 25, n = 16$

a) The expected value of the sample mean of the weights is 151 lb.

(b) What is the standard deviation of the sampling distribution of the sample mean weight?

This is $s = \frac{\sigma}{\sqrt{n}} = \frac{25}{\sqrt{16}} = 6.25$

8 0

3 years ago

Is 14/950 more or less than 1/2 and why!

qwelly [4]

Well because 14 is nowhere near half of 950 (which is 475), 1/2 is bigger. I hope this helped.

3 0

3 years ago

What is the area of triangle PQR? Round to the nearest tenth of a square unit.

larisa86 [58]

ANSWER

111.3 square units.

EXPLANATION

The formula for calculating the area of a triangle is.

$Area = \frac{1}{2} \times base \times height$
Let us the side of the triangle with side 12 units to be the base of the triangle.

Then the height of the triangle can be determined from the diagram using trigonometry.

$\sin(68 \degree) = \frac{height}{20 }$

$height = 20 \sin(68 \degree)$

$height = 18.54$

We now plug in the values in to the formula to obtain,

$Area = \frac{1}{2} \times 12 \times 18.54$

$Area = 111.3 \: square \: units$

See graph