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Mamont248 [21]
3 years ago
9

Find the value that completes the square r^2-30r+__

Mathematics
1 answer:
babunello [35]3 years ago
6 0
r^2-30r+225=(r-15)^2
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Hey yall what is 34 x 45 x 567
tekilochka [14]

Answer:

867510

Step-by-step explanation:

34 x 45 = 1530

1530 x 567 = 867510

hope this helped

4 0
3 years ago
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Which of the following uses the distributive property correctly?
valentina_108 [34]
The third one 
3(x+5) = 3 * x + 3 * 5 
7 0
3 years ago
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Help pls I need it before 11:59
Luden [163]

Answer:

5/6

Step-by-step explanation:

probability of rolling a 5 on a die=1/6

P of not rolling a 5 = 1-1/6= 5/6

7 0
3 years ago
Can someone answer this please!!
Katyanochek1 [597]

Answer:

<u>The perimeter of the square is option E. 16√5 mm.</u>

<u>The area of the square is option A. 80 mm².</u>

Step-by-step explanation:

1. Let's calculate the perimeter of this square:

The perimeter of a square is the sum of its side 4 times, thus:

Perimeter = 4√5 + 4√5 + 4√5 + 4√5

<u>Perimeter = 16 √5</u>

<u>Perimeter = 4 * 4√5 = 16√5</u>

<u>The correct answer is option E. 16√5 mm</u>

2. Let's calculate the area of this square:

The area of a square is the length of its side squared, thus:

Area = (4√5)²

Area = 4√5 * 4√5

Area = (4 * 4 * √5 * √5)

Area = 16 * 5 = 80

<u>The correct answer is A. 80 mm²</u>

5 0
3 years ago
If the sample size is multiplied by 4, what happens to the standard deviation of the distribution of sample means?
Feliz [49]

Increasing the sample size by a factor of 4 or multiplying it by 4 is equal to increasing the standard error by 1/2.  Therefore, the interval will be half as varied.  This also works almost for population averages as lengthy as the multiplier from the t-curve doesn't modify much when increasing the sample size.

6 0
4 years ago
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