2a
tan37=r/8
r=8tan37
r≈6 in rise per step (to nearest whole inch)
2b
11*12/6=22 steps needed to climb the 11 ft to the entrance
...
3a
tanα=14/20
α=arctan(7/10)
α≈35° (to nearest whole degree)
..
3b
tanα=21/17
α=arctan(21/17)
α≈51° (to nearest degree)
These two angles are a linear pair so they will add up to 180°
equation:
x+42=180
x=138°
Answer:
standard form is 6x−11y=13
Step-by-step explanation:
<em><u>a</u></em><em><u>)</u></em><em><u> </u></em><em><u>3</u></em><em><u>6</u></em><em><u> </u></em><em><u>on </u></em><em><u>section</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>qus</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>titik </u></em>
Answer:
25 minutes
Step-by-step explanation:
When there are to people washing one elephant they will take half the time.
So half of the longest time will be the answer to the question.
Mary takes longer then Nigel so once Nigel is finished Mary will still wash her side for 5 minutes extra.
