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Finger [1]
3 years ago
12

A box contains tiles that cover 8.5 square feet of floor area. Pamela needs to install the tiles on 518.50 square feet of floor.

How many boxes of tile does she need?
Mathematics
1 answer:
andrey2020 [161]3 years ago
4 0
61 boxes :)

A= lw

We know the area and one of the variables-

518.50= 8.5w

Divide 518.5 by 8.5

518.5/8.5= 61

61 boxes!
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The contractor for a new school put a rectangular garden in the courtyard. The length of this garden is 5 feet longer than its w
Andrej [43]

Answer:

23ft

Step-by-step explanation:

Area of the rectangle = LW

L is the length

W is the width

Given

Area = 414ft²

If the length of this garden is 5 feet longer than its width, then;

L = W+5

Substitute into the formula

414 = (W+5)W

414 = W²+5W

W²+5W-414 = 0

W = -5±√5²-4(-414)/2

W = -5±√25+1656/2

W = -5±√1681/2

W = -5+41/2

W = 36/2

W = 18ft

Since L = W+5

L = 18+5

L = 23ft

Hence the length of the rectangle is 23ft

7 0
3 years ago
There is a body of water that starts with 1 square unit, and doubles in size every day (2 units after 2 days, 4 units after 4 da
Alexxandr [17]

Answer:99 days

Step-by-step explanation:

Given

If one start with one square unit it takes 100 days

i.e. At second day it is 2 unit

third day 2^2

at n th day 2^{n-1}

at 100 day 2^{99} square unit

If we start with 2 square units it would take

2^n for n days

2^n=2^{99}

n=99\ days

6 0
3 years ago
BRAINLIESTTTTT!!!!
Debora [2.8K]
Hi!

Samuel bought the mixer for $54,205. The value of this (the prive) decreases every year at a costant rate (so, for example, it may decrease of $100 every year).

we are solving for t and we should keep in mind that we multiply the price for the function (1 - rate/100)^time

in f(t) you put the value of year 1 for example

f(t) = 54205(1- \frac{value1-value2}{value1}) ^t

Solving for r will bring us to the solution, and we can substitute 1 to t since we are calculating how much it decreases after ONE year.

We would divide for 54205 to cancel out that 54205 multiplicating the parenthesis.

Also, the x is given by the formula (vale2-value1)/value1 to see how much the price changes from year 1 to year 2

We will get f(t) = 54205(\frac{(47000-41000)}{47000}) ^1

Again, it would be:

f(t) = 54205(0.13)^1
7 0
4 years ago
Read 2 more answers
ILL GIVE YOU BRAINLEST PLEASE THIS IS THE ONLY QUESTION I HAVENT ANSWER!
Alona [7]

A and B

Both A and B, when simplified get -(1/6), because the others have either 0 or 2 negative signs, denoting a positive end result.

6 0
3 years ago
NEED HELP PLEASE ASAP
ivann1987 [24]

Answer: 45?

Step-by-step explanation: because a perfect corner is 90 degrees so if you split that, you will get 45!

6 0
2 years ago
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