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Answer:
Jet= 420 mph Wind = 10mph
Step-by-step explanation:
The speed of the plane in a tailwind can be modeled by x+y where x is the speed of the plane and y is the speed of the wind. Dividing 1290 by 3 gets you the average speed of the jet in a tailwind, which is 430.
The speed of the plane in a headwind can be modeled by x-y where x is the speed of the plane and y is the speed of the wind. Dividing 1230 by 3 gets you the average speed of the jet in a tailwind, which is 410.
This can be modeled by a system of equations, where x+y=430 and x-y=410. Solving the equation you get x=420 and y=10.
So, the speed of the jet is 420 mph and the speed of the wind is 10 mph.
Answer:
m∠B = 119°
Step-by-step explanation:
- the measure of c and 112 are on the straight angle and they are both equal 180°
c = 180 - 112 = 68
∠c = 68°
- the sum of the interior angles of a triangle is 180°
- the measure of third angle = the sum of the interior angles - the sum of two angles
a = 180 - (51 + 68) = 61
∠a = 61°
- the measure of 61 and b are on the straight angle and they are both equal 180°
b = 180 - 61 = 119
∠b = 119°
also you can go on other way
- an exterior angle of a triangle is equal to the sum of the opposite interior angles
51 + 68 = 119
Answer:
Step-by-step explanation:
Given:
We need to reduce the given matrix to reduced echelon form.
Solution:
Make zeroes in column 1 except the entry at row 1, column 1. As we can see all elements in column are already zero. Make zeroes in column 2 except the entry at row 2, column 2.
So, in reduce echelon form is
I got -0.75. But is that a 3 and 1/2 or just 3?