Answer:
the side lengths are both 7
Step-by-step explanation:
Because the angles are both 45 degrees, the triangle is isosceles: the side lengths are equal. The hypotenuse of a model 45-45-90 triangle is √2 when the sides are 1 each:
√2 1
------ = -------
7√2 x
1 1
This can be reduced to ----- = -----
7 x
which makes it obvious that the side lengths are both 7.
Average acceleration: ( v - v o ) / Δ t
v = 0 m/s, v o = 20 m/s, Δ t = 3.5 s
a (average) = ( 0 m/s - 20 m/s )/3.5 s = - 20 m/s / 3.5 s =
= - 5.7142857 m/s² ≈ - 5.71 m/s²
Answer:
-76
Step-by-step explanation:
f(x) = x^2– 7. and g(x) = 5 – x^2 ,then g(f(-4)) =
-76
Answer:42
Step-by-step explanation:
Let the sons age be x years then
- the fathers age is 2x + 5 years, So:-
2x + 5 - x = 25
x = 25 - 5 = 20
The father is 2 (20) + 5 = 45 years answer
