Answer:
<u>Approximate values according to picture:</u>
<u>The values of given expressions:</u>
- a) a + b + c = 1.6 + 4 + 5.8 = 11.4
- b) c - b + a = 5.8 - 4 + 1.6 = 3.4
- c) c ÷ a + b = 5.8 ÷ 1.6 + 4 = 3.6 + 4 = 7.6 (3.6 is rounded)
Just think of slope as the rate of change
Step-by-step explanation:
Area of rectangle = l x b
= (m-1) (m+1)
This is the difference of 2 squares
So
=m^2-1
Let x be the number.
x-x²=2/9, so 9x-9x²=2 or 9x²-9x+2=0=(3x-2)(3x-1). Therefore x=2/3 or 1/3.
Check: 2/3-4/9=6/9-4/9=2/9 and 1/3-1/9=3/9-1/9=2/9.
<u>Answer:</u>
- The weight after 20 months is 210 kilos.
<u>Step-by-step explanation:</u>
- 1 month = 6 kilos
- => 8 months = 6 x 8 = 48 kilos
- => x + 48 = 138
- => x = 90
<u>This means that the starting point is 90 kilos.</u>
- => 1 month = 6 kilos
- => 20 months = 6 x 20 kilos
- => 20 months = 120 kilos
- => 90 + 120 = weight in 20 months
- => <u>210 kilos = weight in 20 months</u>
Hence,<u> the weight after 20 months is 210 kilos.</u>
Hoped this helped.
