Answer:
2 ( 2a + 3b - 4)
Putting the value of a= 2 and b = 3 in the equation
2( 2(2) + 3(3) -4)
2 (4 + 9 -4)
2( 4 -4 + 9)
2 (0 + 9)
2 (9)
2 × 9
18
Answer:
-2 < x
Step-by-step explanation:
-6x - 16 < 2x
Add 6x to each side
-6x+6x - 16 < 2x+6x
-16 <8x
Divide by 8
-16/8 < 8x/8
-2 < x
7/8 + 4/8= 11/8 so 11/8 ÷2 = 5.5/8 she puts 5 1/2 /8 cups of the mixture in each bowl
Answer:
13 1/2 tall
Step-by-step explanation:
If 4 1/2 is the childs hight and their shadow is 6 feet, the shadow adds 2 1/2 to the height.
Answer:
1. 516 ppm; 2. 561 ppm
Step-by-step explanation:
1. CO₂ increase at old rate
Time = 2100 - 2010 = 90 years
Increase in CO₂ = 90 yr × (1.4 ppm/1 yr) = 126 ppm
CO₂ in 2010 = 390 + 126 = 516 ppm
At the old rate, the CO₂ concentration in 2100 will be 516 ppm.
2. CO₂ increase at new rate
Time = 2100 - 2010 = 90 years
Increase in CO₂ = 90 yr × (1.9 ppm/1 yr) = 171 ppm
CO₂ in 2010 = 390 + 171 = 561 ppm
At the new rate, the CO₂ concentration in 2100 will be 561 ppm.