Answer:
1 - 3.54 hours / total flight time - 4.54
2 - 15/22
Step-by-step explanation:
First, you need to find the speed of the plane for the rest of the flight.
In the last 2 hours, it flies 830 miles.
In the last 1/2 hour, it flies at 160 mph so it travels 80 miles.
So in the middle of the flight, it travels (830 - 80) = 750 miles in 1 1/2 hours
Speed = 500 mph
Now think about the whole flight. There is 1 hour at 160 mph plus x hours at 500 mph.
Distance = 160 + 500x = 1930
500x = 1770
x = 3.54 hours
Total flight time = x + 1 = 4.54 hours
Answer:
[3,10]
Step-by-step explanation:
Lmk if you need an explanation and I'll add one.
Answer:
(x - 1)² + (y - 4)² = 25
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
here (h, k) = (1, 4), so
(x - 1)² + (y - 4)² = r²
The radius is the distance from the centre to a point on the circle
Calculate r using the distance formula
r = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (1, 4) and (x₂, y₂ ) = (4, 8)
r =
= = = = 5
Hence
(x - 1)² + (y - 4)² = 5², that is
(x - 1)² + (y - 4)² = 25 ← equation of circle
Answer:
5.6
Step-by-step explanation:
also can u give me brainly and yw
Answer:
A)
a) H0: ptrue < 0.7; Ha: ptrue = 0.7
B)
d) 0.64
C)
b) No
Step-by-step explanation:
Hypothesis is a technique which is used to test the event against an alternative hypothesis. The null hypothesis is set as a basis which is tested against an alternative hypothesis to make a conclusion. This null hypothesis is analysed against a probability using significance level and then a conclusion is made to accept or reject the null hypothesis.