A15-foot ladder is leaning against a house with the base of the ladder 4 feet from the house. how high up the house does the ladder reach? round to the nearest tenth of a foot.

height of house to ladder reach is 14 ft

Explanation:

Given data

ladder = 15 ft

base  = 4 ft

to find out

height of house

solution

we know this is triangle shape so we apply here

so we consider here x is ladder and y is base and z is height

so

by pythagoras theorem

z² + y² = x²

so here

z² = x² -y²

put value

z² = 15² - 4²

z² = 209

z = 14.45 = 14

so height of house to ladder reach is 14 ft

d is the correct answer

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27