Amount needed=earned+already have
205=earned+30
earned=7 times number of hours=7h
205≤7h+30
we used the less than or equal to because he needs at least 205, means 205 or greater must be earned
205≤7h+30
minus 30 both sides
175≤7h
divide both sides by 7
25≤h
needs to work at least 25 hours
Answer:
cos(θ) = -3/5
Step-by-step explanation:
The cosine of the reference angle (in the first quadrant) is ...
cos(θ) = √(1 -sin(θ)²) = √(1 -(4/5)²) = √(1 -16/25) = √((25-16)/25)
= √(9/25) = 3/5 . . . . in the first quadrant
In the second quadrant, the cosine is negative, so the answer is ...
cos(θ) = -3/5
See the attached figure
t<span>he angle of the last turn was angle alfa in the point C
tan(alfa)=3/3.5=0.8571
alfa=arctan(0.8581)=40.60</span>°
<span>Round to the nearest degree---------> alfa=41</span>°
the answer is 41°
Answer:
56cm squared because the formula of triangle is base times hight
Step-by-step explanation:
hope this helps