81a²-25 would be the answer I'm pretty sure. Hopefully I helped.
-1/(2*2) = -x7
-1/4 = -x7
-1/4 ÷ -7 = -x7/-7
-1/4 * -1/7 = x * dividing fractions, the 2nd fraction must be in its reciprocal form.
-1/28 = x -7 in fraction for is -7/1 and in reciprocal form is -1/7
* multiply the 1st fraction to the reciprocal of the 2nd fraction
x = -1/28 * simplify the fraction.
Answer:
Cable attached height (Perpendicular) = 10√3 m
Step-by-step explanation:
Given:
Length of cable (Hypotenuse) = 20 m
Angle θ = 60°
Find:
Cable attached height (Perpendicular)
Computation:
Perpendicular/Hypotenuse = Sinθ
Perpendicular/20 = Sin 60
Perpendicular/20 = √3 / 2
Perpendicular = 10√3
Cable attached height (Perpendicular) = 10√3 m
Awww The picture is black , but best of luck for the upcoming semester !!
Answer: she ran 3.53km on the third day.
Step-by-step explanation:
Let x represent the number of miles that she ran on the second day.
The first day, she ran 1.37 km more than she ran on the second day. This means that the distance that she ran on the first day is
x + 1.37
On the third day, she ran 0.98 km more than the second day. This means that the distance that she ran on the third day is
x + 0.98
The total distance that she wants to run in 3 days is 10km. This means that
x + 1.37 + x + x + 0.98 = 10
3x + 2.35 = 10
3x = 10 - 2.35
3x = 7.65
x = 7.65/3
x = 2.55
The distance that she ran on the third day is
2.55 + 0.98 = 3.53 km
