$17.
To find this, set up a simple fraction like equation. Using the is over of technique, this equation is formed.
x / 20 = 85 / 100
Multiply 20 with 85 before dividing by 100 to get the final answer of 17.
Hope this helps!
Answer:
161,460 gallons are used in a year.
Step-by-step explanation:
1 shower- 2.3×15=34.5
Number of minutes spent in the shower in a week- 15×6=90
Gallons used per week- 34.5×90=3,105
There is 52 weeks in a year.
52×3,105=<u>161,460</u>
To calculate the number of shingles, we first calculate for the total area of the roof of Janice's house. From the figure, we can calculate the area of the two shapes: pyramid and a rectangular prism.
A(pyramid) = lw+l√[(w/2)²+h²]+w√[(l/2)²+h²]
A = 208 m²
A(prism) = 2(wl+hl+hw)
A = 293 m²
Total area = 501 m²
Number of shingles she needs = 501 m² / 2.25 m² =<span> 223</span><span>
</span>
Precision is a measure of how close a value is to the
ideal value. In this case, we calculate the difference to know what is the
closest to 4 g:
4.05 – 4 = 0.05
3.98 – 4 = -0.02
4.021 – 4 = 0.021
We can see that the value of 3.98g has the lowest
difference and is therefore the closest to 4g. Hence the most precise is:
<span>3.98 g</span>
