Answer:
D: 5 : 8 and 20 : 32
Step-by-step explanation:
A is incorrect because 3 x 1.33 = 4 and 4 x 1.25 = 5.
B is incorrect because 10 x 1.6 = 16 and 12 x 1.5 = 18.
C is incorrect because 7 x 1.428 = 10 and 10 x 1.4 = 14.
D is correct because 5 x 4 = 20 and 8 x 4 = 32.
another way of solving the ratio answers is by putting them in a fraction 5/8 = .625 and also does 20/32 = .625.....
Easy right!?
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Answer:
(a) 27°
(b) 17.9m
Step-by-step explanation:
According to the attachment
⠀
let AB be the ladder
BC be the distance between the ladder and wall
⠀
(a) We have to find ∠A by trigonometry formula
Here angle A is facing BC so it is perpendicular
and AB is the longest side so it is hypotenuse
(b)
AC is the distance from the upper end of the ladder to ground
we will find it by Pythagoras theorem
It is D (2,8] because it does not include 2 but includes 8.
Just know that 3/7 is a decimal and 1 is not so 3/7 is bigger but 3/7=0.42857143