Answer:
1. $64
2. 20%
3. 25%
4. $65.50
Step-by-step explanation:
1. 80 x 20% = ?
method = 80 x 0.20 = 16 = $16 80-16 = 64 = $64
2. 14 x ? % = $11.20
method = We divide 11.20/14 = 0.8 = 0.80 = 80% inverse of 80% = 20%
proof 14 x 0.20 = 2.80 so; 14 -2.80 = $11.20
3. 1000 x ? = $750
method = 1000/750 = 0.75 0.75 = 75% inverse on original price = 25%
4. $55 x 10% = ?
method = 55 x 1.10 = 65.5 = $65.50
Answer:
<h3>The answer is option B</h3>
Step-by-step explanation:
Perimeter of a rectangle = 2l + 2w
where
l is the length
w is the width
From the question
l = 12m
w = 400 cm
First we must convert the length from meters to centimeters
1 m = 100 cm
12 m = 12 × 100 = 1200 cm
So l = 1200 cm
Substitute the values into the above formula
We have
Perimeter = 2(1200) + 2(400)
= 2400 + 800
We have the final answer as
<h3>Perimeter = 3200 cm</h3>
Hope this helps you
Answer:
Step-by-step explanation:
From the way it is written, the is outside the square root. I will rewrite it as:
Multiply denominator and numerator by 3
Factor
Divide denominator and numerator by
Let's rewrite it again
It is already in the form
Expanding the perfect square, we have
Factor
Therefore,
All you have to do in this question is apply the formula and use a calculator
2070(1-0.22)^4= 766.21 dollars ( the number has been rounded)
Answer: division
2 / 5 = 0.4
so 0.4 is 2/5 as a decimal