Answer:
5
Step-by-step explanation:
There are 6 numbers on a die, one of them is 5 so we expect to get a five one of six times
P (5) = 1/6
If we roll the die 30 times, we expect to get a five 30 * 1/6 = 5 times
Answer:
3(a+2b)
Step-by-step explanation:
5a+5b−2a+b
Multiply and combine like terms.
3a+6b
Factor out 3.
3(a+2b)
Answer:626
Step-by-step explanation:
15x7=105 years
9x5=45 years for the boys
105-45=60 so 60years girls
60/6=10 60 years divided by the 6 girls
Mean is 10 years for girls
Answer:
I would measure a 45° angle from the ground to the building. Then I would back up until the angle aligns with both the ground and the top of the building. I would measure the distance between me and the building to get the height of the building. Since the triangle is a 45, 45, 90 triangle, the distance between me and the building would be the same as from the ground to the top of the building.
Step-by-step explanation:
<em>Sorry I'm not drawing a sketch for this but I'll put it very simply with a 45, 45, 90 triangle because that's easiest.</em>
