The correct question is
<span>Melissa is helping her dad build a walkway in their backyard. The walkway will be 54 feet long and 1.5 feet wide. The local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12 How many boxes of tiles do they need?
we know that
area of </span>a walkway=long*wide-----> 54*1.5-----> 81 ft²
area of one tlie=1.5*1.5-----> 2.25 ft²
find the numbers of tiles required
by proportion
1/2.25=x/81
x=81/2.25------> x=36 tiles
find the numbers of boxes required
by proportion
1/12=x/36
x=36/12------> x=3 boxes
the answer is
3 boxes
X=10 and y=5 so it's the first option
Answer:
3x+30/8
Step-by-step explanation:
The formula to calculate circumference is πd or 2πr. We also know that 2r = d.
So, using these formulas, let's try to figure out the first row of the table.
The diameter is 14.
We know that 2r = d or 2r = 14, therefore r=7. This means the radius is 7.
The circumference is πd or 14π or ≈ 43.96.
Let's move to the second row.
We know that the radius is 21.
2r = d
2(21) = d
d = 42
The diameter is 42.
Therefore, the circumference is 42π or ≈ 131.88
Let's move to the final row.
We know that the radius is 10.5.
2r = d
2(10.5) = d
d=21
Therefore, the diameter is 21 cm.
Circumference = πd = 21π or ≈ 65.94
Given:
Three different integer addition expressions equal −5.
To find:
The three different integer addition expressions.
Solution:
We know that 0 is the identity element under addition. It means if we add 0 to a number we get the same number.
One expression is .
The other expression are:
Therefore, the three different integer addition expressions that are equal to -5 are .