Let's denote Cindy's age which is unknown with X
We know that Cindy's age is 3 times her age 6 years ago.
6 years ago Cindy's age was the present age (X) - 6 : X-6
The fact that the present age is 3 times her age 6 year ago can be written as:
3*(X-6)
So, finally:
X=3*(X-6)
Answer:
x = 88.2
Step-by-step explanation:
The angle at the top of the triangle = 90° - 10° = 80°
and the left side of the triangle is x ( opposite sides of a rectangle )
Using the tangent ratio in the right triangle
tan80° = =
Multiply both sides by x
x × tan80° = 500 ( divide both sides by tan80° )
x = ≈ 88.2
Step-by-step explanation:
since all 4 sides are equal in length, the figure is a square.
let the length of the square be lm.
529 = l x l
l = 23m
perimeter = 23 x 4 = 92m
Topic: mensuration
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Answer:
Step-by-step explanation:
To Calculate the percentage Increase
<u>Step 1</u>: Subtract the old value from the new value
1.8 mg - 1.2 mg = 0.6 mg
<u>Step 2:</u> Divide the difference by the Old Value
<u>Step 3: </u>Multiply by 100
The Percentage Increase in Iron is 50%.