At the Healesville supermarket,

Mathematics

1 answer:

BigorU [14]3 years ago

5 0

Answer:

5.75 meters

Step-by-step explanation:

Here we are told that , the trolley added to the stack , increases the length by 25 cms or 0.25 mts.

Hence every trolley stacked will add 0.25 mts to the trolley already stacked. However the first trolley in 20 trolleys will be occupying 1 mt only. Hence , rest of the 19 trolleys will be covering 0.25×19=4.75 mts.

Hence , total distance covered by 20 trolleys =

1+4.75=5.75 mts

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Rewrite the function W= 50+2.3(h-60) in order to express height as a function of weight

OLga [1]

You need to solve the equation for h.

<span>W= 50+2.3(h-60)

Distribute the 2.3.

W = 50 + 2.3h - 138

W = 2.3h - 88

Add 88 to both sides.

W + 88 = 2.3h

Switch sides.

2.3h = W + 88

Divide both sides by 2.3.

h = (W + 88)/2.3
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5 0

4 years ago

What is 96-8c=20-12

galben [10]

Answer:

c = 11

Step-by-step explanation:

96 - 8c = 20 - 12 , that is

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2 years ago

Find the dimensions of a rectangle with perimeter 108 m whose area is as large as possible. (If both values are the same number,

V125BC [204]

Answer:

27 by 27

Step-by-step explanation:

Let the sides be x and y. The problem is essentially asking:

Given 2(x+y)=108, maximize xy.

We know that x+y=54. By the Arithmetic Mean - Geometric Mean inequality, we can see that $\frac{x+y}{2} \ge \sqrt{xy$ . Substituting in x+y=54, we get $27\ge\sqrt{xy}$ , meaning that $729 \ge xy$ . Equality will only be obtained when x=y (in this case it will generate the maximum for xy), so setting x = y, we can see that x = y = 27. Hence, 27 is the answer you are looking for.