Answer:
59.25 euros
Step-by-step explanation:
The figure that is formed is the following with the respective measurements, now to calculate the area we need the height, for Pythagoras we have:
17 ^ 2 = h ^ 2 + 8 ^ 2
h ^ 2 = 289 - 64
h ^ 2 = 225
h = 15
now the figure area is as follows:
A = h * (b + a) / 2
b long side 20 m and short side 12 cm, replacing:
A = 15 * (12 + 20) / 2
A = 240 m ^ 2
We are told that each can of weedkiller can cover up to 100m ^ 2
Thus:
240/100 = 2.4, so you would need 3 cans of weedkiller
each can costs 19.75, which means that the total cost is:
19.75 * 3 = 59.25 euros
Answer:
Step-by-step explanation:
4 doz for 7.25 = 12 doz for x
set up a proportion
4 12
------ = ------- cross multiply
7.25 x
4x = (7.25)(12)
4x = 87
x = 87/4
x = 21.75 <====
=========================
so we have 0.49 for the first oz.....and 0.22 for each additional oz....and there is 4 additional oz's because 5 - 1 = 4....so thats 0.49 + 4(0.22) = 0.49 + 0.88 = $ 1.37 for the cost of a 5 oz letter. <===
<span>Let the larger number be x.
</span><span>A number, y, is equal to the difference of a larger number and 3.
y = x - 3
x - y = 3
</span>The same number is one-third of the sum of the large number and 9.
y = (1/3)(x + 9)
3y = x + 9
x - 3y = -9
The equations are:
x - y = 3
x - 3y = -9
Don't you just grab the volume of the box and subtract the volume of the basketballs.
