Answering Rose's Probability question

The question was What is the p(white) marble? Express as fraction, ratio and percent.

There are eight marbles and there are 4 white marbles, so the favorable outcome is 4 over possible outcome which is 8

Fraction: 4/8 but you can still simplify it so it is 1/2 because you can divide 8 & 4 by two.

Ratio: 1:2

percent: 50% because if you divide 1 by 2 you get .5 then you turn it into a percent.

Questions 16 and 17.

Question 16:

What is the area of each triangle?

A)

The formula is Base x Height, divided by 2.

2 m x 6 m = 12 m

12 m ÷ 2 = 6 m

So the answer is 6 m ².

B)

b = 5.2 m, h = 5.3 m

5.2 x 5.3 = 27.5

27.56 ÷ 2 = 13.78 m

The answer: 13.78 m ²

Question 17:

Aleta has a pasture for her horses. The pasture runs alongside a creek as shown. What is the approximate area of the pasture? Explain how you determined show your answer.

1.1 km will be your base.
1.6 km will be your height.

1.1 x 1.6 = 1.76

1.76 ÷ 2 = 0.88

The answer: 0.88 km ². It is an app. answer because the creek is NOT straight.


Here is a video to help you find the area of a triangle.



Also, here is a link for you to play.