Answer: 6 units squared
Step-by-step explanation: ok here is how you do it so you make the triangle like I did and once you make it. You count the squares about how long it is and how high it is in this case I got for the base 6 and the height 2 so we multiply to get 12 also we divide 12 and 2 to get 6 units squared there you go. hope this helps.
<u>First problem :</u>
probability to draw a red paper : 42/(42+18)=7/10
In 110 tries one can thus expect to draw 7/10*110=77 red papers
<u>Second problem :</u>
Since for 150 trials (which will give the least error) we have got 135 yellow balls, we can expect twice as much in 300=150*2 trials, which makes 270 yellow balls.
Answer:
- sin = √(1 -cos²)
- tan = (√(1 -cos²))/cos
Step-by-step explanation:
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If you draw a triangle with a hypotenuse of 1 and an "adjacent" leg of "cos", then using the Pythagorean theorem, you can see that the "opposite" leg will be √(1-cos²) and the tangent will be (√(1-cos²))/cos. Whether or not you're allowed to draw such a triangle on paper, you can certainly do it in your mind.
Answer: The 6 sections has an area of 1/72 square yards
Step-by-step explanation:
Length= area / length
Length = 1/12 ÷ 1/3 = 1/12 × 3/1 = 1/4 yards
Since the width and length are different and the 6 squares must be arranged in a 2 × 3 pattern.
The long side is 1/3 yard
1/4 ÷ 2/1 = 1/4 × 1/2 = 1/8 yard
And the width is 1/3 ÷ 3/1 = 1/3 × 1/3 = 1/9 yard
The 6 sections are 1/8 × 1/9 and each one has an area of 1/8×1/9 = 1/72 square yard