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Anna [14]
3 years ago
12

Is the square root of 21 is an irratoinal number true or false explain

Mathematics
1 answer:
MrRa [10]3 years ago
3 0

Yes it is because it has no square factors.

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you practice the piano for 30 min. each day. Write and solve an equation to find the total time t you spend practicing the piano
Tom [10]
Lets get all the information we need first.
A week has 7 days, you practice 30 min each day, so in a week you will practice a total time t of 30 min for 7 times, that is:
t = 7day(30 min/day)
t = 210 min
So in a week you will practice a total of 210 minutes.
7 0
3 years ago
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4) What is the cost of 1st class ticket (x) and the cost of a coach ticket (y) *
Kobotan [32]

Answer:

1st class - 22 people

coach - 57 people

Step-by-step explanation:

$85 x 22 people = $1870

$60 x 57 people = $3420

22 people + 57 people = 79 people

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blue green and yellow

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3 years ago
Sam decides to build a square garden. If the area of the garden is 25x2 + 30x + 9 square feet, what is the length of one side of
seropon [69]
The correct answer is C. (5x+3) feet, and here is how I got it.
This is the equation you need to use:
(a+b)^2 = (a+b) (a+b)
So, let us plug in 5x and 3 here:
(5x+3)^2 = (5x+3)(5x+3) = 25x^2 + 15x + 15x + 9 = 25x^2 + 30x + 9 which is the area of the garden. 
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3 years ago
What would the graph of the solution to the following inequality look like?
yan [13]

Answer: A. An OPEN circle on the number 5 and an arrow shading to the RIGHT.

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