Answer:
1. x = 10
2. x = 8
3. x = 7
Step-by-step explanation:
1. Sum of Angles in a triangle = 180
(6x + 3) + (5x - 7) + 74 = 180
11x - 4 + 74 = 180
11x + 70 = 180
Subtract 70 from both sides
11x = 110
Divide both sides by 11
x = 10
2. (8x + 1) + (7x + 14) + 45 = 180
15x + 15 + 45 = 180
15x + 60 = 180
Subtract 60 from both sides
15x = 120
Divide both sides by 15
x = 8
3. We first have to get the 3rd angle: 180 - Exterior angle = 3rd angle
180 - 118 = 62
Now we can find the value of x
10x + (6 + 6x) + 62 = 180
16x + 68 = 180
Subtract 68 from both sides
16x = 112
Divide both sides by 16
x = 7
We set up a proportion to do this. There are 100 cm in 1 meter to we use this:
700 cm ( 1 m / 100 cm )
The cm's will cancel each other out since there is one in both the numerator and the denominator.
This leaves you with:
700 / 100 = 7.
The only units left when the centimeters cancel out is meters.
So there are 7 meters in 700 centimeters.
Answer:
( 3 ) ( 7 ) − ( 
)
= 21 − ( )
= 
Hope it helps
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A plane leaves the airport at 9:15pm and travels at speed 560km/h then at midnight plane will be at 1540 km far away.
As given,
Plane leaves the airport at 9:15 pm
Plane travels at speed of 560 km /h
Total time = 2hour+ 45minutes
= 2hour+ (45/60)hour
= (11 /4) hour
We have
1 hour = 560 km
⇒ (11 /4)hour = (560 ×11)/4 km
= 1540 km
Therefore, a plane leaves the airport at 9:15pm and travels at speed 560km/h then at midnight plane will be at 1540 km far away.
Learn more about speed here
brainly.com/question/28224010
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