Answer:
Base = 24 ft; height = 47 ft
Step-by-step explanation:
The formula for the area of a triangle is
A = ½bh
Let x = the base. Then
2x - 1 = the height
We reject the negative value, so x = 24 ft
Base = x = 24 ft
Height = 2x - 1 = 2(24)-1 = 48 - 1 = 47 ft
Check:
564 = ½ × 24 × 47
564 = 564
OK
5x + 18y = 23
x + 3y = 2 .....multiply by -5
----------------
5x + 18y = 23
-5x - 15y = -10 (result of multiplying by -5)
----------------add
3y = 13 <=== the resulting equation
Answer:
4.2 meters
Step-by-step explanation:
The height that the lights will be put is 420 centimeters, and the question asks how many meters off the ground the lights need to be placed, so to solve the question we just need to convert 420 centimeters to meters.
We know that 1 meter is equal to 100 centimeters, so we can solve this using a rule of three:
100 centimeters -> 1 meter
420 centimeters -> X meters
100/420 = 1/X
X = 420/100 = 4.2 meters
The lights need to be placed on the pole at 4.2 meters off the ground.
Answer:
No because if it was true 10 would come up to 40 not 42. Hope this helps <3
