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3 years ago

18 is what percent of 27?

Mathematics

2 answers:

Yanka [14]3 years ago

7 0

Answer:

66.67% or 2/3

Step-by-step explanation:

18 = 27x

x=18/27

x = 2/3

18 is 66.67% or 2/3 of 27

Katarina [22]3 years ago

7 0

In order to find what percent 18 is of 27 you can divide the two numbers and multiply by 100

18/27*100
=66.6%

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Step-by-step explanation:

the product = 4× c

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First, isolate x.

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You can actually square root both sides of the equation:

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Theresa won a gardening contest and was awarded a roll of deer-proof fencing. The fencing is 36 feet long. She and her husband,

mihalych1998 [28]

Answer:

see below

Step-by-step explanation:

It is given that the roll of fencing is 36 ft long. Hence the perimeter of the fencing is 36 ft long.

Since the fence is to be rectangular,

Perimeter = (2 x Length ) + (2 x Width) = 36 feet

The quickest would be using calculus, but the most simple way (without using polynomials) would be to simply list the possibilities for Length and Width:

If we consider only half of the perimeter, i.e only 1 Length and 1 Width:

From the formula above,

(1/2) of Perimeter = Length + Width = 18 feet

Given that the Length & Width are to be whole numbers AND that the sum of Length & Width adds up to 18, then the possible dimensions and area are as follows:

Assemble a table in the following format:

Length x Width = Area

18 x 1 = 18

17 x 2 = 34

16 x 3 = 48

15 x 4 = 60

14 x 5 = 70

13 x 6 = 78

12 x 7 = 84

11 x 8 = 88

10 x 9 = 90

9 x 10 = 90 (anything from here onward basically repeats the previous lines, so we ignore this line and any others that follow)

a) The possible dimensions are everything listed in the table above except the last line which is repeated

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4 years ago

Toni and Marcy partnered together in running laps around a track to raise money for the Children's Hospital's playroom. Toni rai

frez [133]

I am assuming that 114114 is actually 114.

Toni: 20 + 0.80/lap
Marcy: 15 + 0.85/lap

Marcy: x laps
Toni: 114x laps

[20 + 0.80(114x)] + [15 + 0.85x] = 257
20 + 91.2x + 15 + 0.85x = 257
92.05x = 257 - 35
92.05x = 222
x = 222/92.05
x = 2.41 laps

Marcy: x = 2.41 laps
Toni: 114x = 114(2.41) = 274.74 laps

20 + 0.80(274.74) = 20 + 219.79 = 239.79 or 240
15 + 0.85(2.41) = 15 + 2.05 = 17.05 or 17

240 + 17 = 257

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4 years ago

A list has 10 numbers. Each number is a 1, 2, or 3. The average is 2 and the SD is 0. What is the list?

OLga [1]

Answer:

1, 1, 1, 2, 2, 2, 2, 3, 3, 3

Step-by-step explanation:

Since the standard deviation = 0

And the mean of the number = 2

If X is the sum of all the numbers, then

X/10 = 2

Cross multiply and make X the subject of formula

X = 2 × 10 = 20

The sum of the numbers will be 20

The number will be

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The sum of the above numbers is equal to 20 and the average value of the numbers is equal to 2.

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3 years ago