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Snezhnost [94]
3 years ago
10

How many students were reading during study time?

Mathematics
1 answer:
WARRIOR [948]3 years ago
3 0
I think that 10 students were reading during study time.
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A. 67 degrees <br> B. 90 degrees<br> C. 33 degrees <br> D. 57 degrees
devlian [24]
67 degrees because you need to look at it
3 0
3 years ago
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What is the LCM of 12,30 and 42
Hoochie [10]

Answer:

420

Step-by-step explanation:

We can find the prime factors of each of the numbers first before finding their LCM.

12: <em>2</em> × 2 × <u>3</u>

30: <em>2</em> × <u>3</u> × 5

42: <em>2</em> × <u>3</u> × 7

To find the LCM, we need to see if they are any common prime factors between all three numbers. The common prime factors are <em>2</em> and <u>3</u>. Then, we multiply 2 and 3 with the remaining outstanding factors, which are 2, 5, and 7.

LCM: <em>2</em> × 2 × <u>3</u> × 5 × 7 = 420

7 0
3 years ago
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Pat wants to create s rectangular playpen for her dogs in her backyard. And estimates the dogs will need 600 square feet. She al
Ira Lisetskai [31]
I found width=13.72 ft and length=43.72 ft.
Call one dimension of the rectangle x, the other will be x+30
You want an area A=600 ft^2 but A=length x width=x*(x+30)=600
Rearranging you get:
x^{2} +30x-600=0
solving this quadratic equation you get a negative solution and a positive one that gives your result.

8 0
3 years ago
Meliza wanted to do some shopping on iTunes. She bought one movie for $6.99 and then by 10 songs. Releases total iPhones cost wa
a_sh-v [17]

Answer:

1.5 for each song.

Step-by-step explanation:

subtract $6.99 by $21.99 = 15 divided by 10 = 1.5

4 0
3 years ago
Charlie ran 5 miles in 51.5 minutes. Use the equation 5r=51.5 to find r, the average rate he ran.
jenyasd209 [6]
5r = 51.5
r = 51.5 / 5
r = 10.3
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3 years ago
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