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Debora [2.8K]
3 years ago
7

Sean is helping his dad build a tiled walkway in their backyard. The walkway will be 69 feet long and 2 feet wide. The local har

dware store sells tiles which are 2 by 2 feet and come in boxes of 6. How many boxes of tiles do they need?
Mathematics
2 answers:
svlad2 [7]3 years ago
7 0
Area walkway = 69 × 2 = 138 feet^2
1 tile = 4 feet^2
4x = 138
138 ÷ 4 = 34.5 tiles (needs 35 tiles)
1x = 6
x = 6 (1 box have 6 tiles)
6y = 34.5
34.5 ÷ 6 = 5.75(needs 6 boxes)
Flura [38]3 years ago
6 0
First we should figure out how many times 2 goes into 69,(because each tile is 2 feet long) and I am going to do that by dividing 69 by 2. I got 34.5, so we can just say 35 to make it easier. So we now know we need 35 tiles, but they come in boxes of 6, so we will need to divide 35 by 6. It didn't make a full number (it was 5.833) but we need a full number of tiles so we will round up.

Our final number of how many boxes of tiles is 6.
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Answer:

<em>Math will take over Ana's brain at 4.4 hours</em>

Step-by-step explanation:

<u>Exponential Grow </u>

The population of the nanobots follows the equation  

p(t) = 5\cdot 2^t

We must find the value of t such that the population of nanobots is 106 or more, that is

5\cdot 2^t\geq 106

We'll solve the equation

5\cdot2^t= 106

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2^t= 106/5=21.2

Taking logarithms

log(2^t)= log(21.2)

By logarithms property

t\cdot log(2)= log(21.2)

Solving for t

\displaystyle t=\frac{log21.2} {log2}

t=4.4 \ hours

Math will take over Ana's brain at 4.4 hours

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3 years ago
If each interior angle of a regular polygon measures 168º, how many sides does the polygon have?
Likurg_2 [28]

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30 sides

Step-by-step explanation:

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3 years ago
Amarosa runs 3/4 mile everyday. How many miles does she run in 5 days?
Andre45 [30]

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Step-by-step explanation:

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3 years ago
Find an equation of variation in which y varies directly as x and y=420 when x= 100. Then find the value of y when x=11.
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3 years ago
A rabbit can run 35 miles per hour.A fox can run 21 miles in half an hour.Which animal is faster and how much
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Answer:


Step-by-step explanation:

The fox is faster. Because he is a fox.


Also because he can (assuming he doesn't fatigue or get caught by hounds in the second half of the hour) run 42 miles in 1 hour.


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Fox velocity = 21 miles/0.5 hour


Dividing by 0.5 is the same as multiplying by 2, so...


Fox velocity = 42 miles/hour

6 0
3 years ago
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