False
When rounding, five or more will make the value go up.
Your change value is a 6 so the dollar value should be $45
move all terms to the left side and set equals to zero. then set each factor equal to zero
The answer would be 49 miles
if you let x equal the number of weeks and y equal the total amount of miles, you could set up the equation
y = 3.5x + 14
to find the amount of miles Oliver ran during the 10th week, you would plug in 10 for x, giving you
y = 3.5(10) + 14
y = 35+14
y=49
Answer:
72 kg
Step-by-step explanation:
For concreatting a tower cement, sand, stones are in the ratio 1:2:4 For 144kg sand.. What amount of cement is required?
We are given the ratio
cement: sand:stones
= 1:2:4
The sum of proportion =
1 + 2 + 4 = 7
We are given the kg of sand = 144kg
Step 1
We find the total kg of cement, sand and stones = x
Using the proportion of sand,
2/7 of x = 144kg
2/7 × x = 144kg
2x/7 = 144kg
Cross Multiply
2x = 7 × 144kg
x = 7 × 144kg/2
x = 504kg
Therefore the total kg of cement, sand and stone = 504kg
Step 2
The amount of cement required is calculated as:
1/7 × 504 kg = 72 kg
Therefore, 72kg of cement is required.
