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3 years ago

What is the sum of the interior angles of a square

Mathematics

2 answers:

kap26 [50]3 years ago

7 0

Answer:

Step-by-step explanation:

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yaroslaw [1]3 years ago

5 0

Answer:

360°

Step-by-step explanation:

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During the summer holidays, your brother earns extra money mowing lawns. He mows 6 lawns an hour and has 21 lawns to mow. How lo

Triss [41]

Answer:

His brother will take 3.5 hours or $3\frac{1}{2}$ hours to mow 21 lawns

Step-by-step explanation:

Given:

His brother mows 6 lawns in an hour.

To find the time his brother takes to mow 21 lawns.

Solution:

We will unitary method to find the time he will take to mow 21 lawns.

If 6 lawns are mowed in 1 hour

So, 1 lawn will me mowed in = $\frac{1}{6}$ hours.

Thus 21 lawns will be mowed in = $\frac{1}{6}\times 21=\frac{21}{6}=3.5$ hours.

Thus, his brother will take 3.5 hours or $3\frac{1}{2}$ hours to mow 21 lawns

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3 years ago

Please help! Quick! Which table is a function?

baherus [9]

C is the answer................

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3 years ago

What is Index Law 3?<br> please give explanation

rodikova [14]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

Read 2 more answers

About 2% of the population has a particular genetic mutation. 1000 people are randomly selected. Find the mean for the number of

Alla [95]

Answer:

Step-by-step explanation:

We khow that the genetic mutation affect 2 percent of the population .

Let's try to understand what does this mean :

in a group of 100 people there is possibility of finding 2 people with this genetic mutation
in a group of 1000 the possibility raises to 20 people so we can deduce that each time we add a zero we add a zero in 2

so :

100⇒2
1000⇒20
10000⇒200
100000⇒2000

and so on

6 0

3 years ago

Printing machine A and printing machine B print the same newspaper printout, but machine B prints at half the rate of machine A.

klemol [59]

Answer:

The answer is below

Step-by-step explanation:

Let us assume the rate of printing in machine A is x per hour and the rate for machine B is y. Given that machine B prints at half the rate of machine A, therefore:

y = (1/2)x (1)

Also, both machine produces 200 newspaper printouts, and both operate at different times for a total of 4 hours. Therefore:

200/x + 200/y = 4 (2)

Put y = (1/2)x in equation:

$\frac{200}{x}+\frac{200}{(\frac{1}{2} )x}=4\\ \\ \frac{200}{x}+\frac{400}{x}=4\\\\Multiply\ through\ by\ x:\\\\200+400=4x\\\\4x=600\\\\x=150$

Put x = 150 in equation y:

y=(1/2)150 = 75

Therefore the rate of machine A is 150 newspapers per hour while that of machine B is 75 newspapers per hour

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4 years ago