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JulijaS [17]
3 years ago
6

What is the length of a diagonal D of a cube that is 10 inches on each edge?

Mathematics
1 answer:
algol [13]3 years ago
4 0
(10^2 +10^2)^.5  = 10*(sqrt2)
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When 7 is subtracted from three times a certain number, the result is 28.<br> what is the number
OverLord2011 [107]

Answer: 35/3 or 11.6

Step-by-step explanation:

3x-7=28

Add 7 to each side

3x=35

Divide by 3

6 0
3 years ago
Read 2 more answers
The measure of an angle is 28 degrees less than its supplement. find each angle
DIA [1.3K]

Supplementary angles measure 180°. Make an equation:

Subtract 28 to leave the variable in the parentheses alone:

Add the 2 x's together:

Your new equation is:

Divide both sides by 2 to leave the variable alone

The supplement measures 76°

4 0
2 years ago
Solve the system of equations by elimination.<br> 2x - 9y = 23<br> 5x - 3y = -1
lbvjy [14]

Answer:

Step-by-step explanation:

2x - 9y = 23

5x - 3y = -12x - 9y = 23

5x - 3y = -12x - 9y = 23

5x - 3y = -12x - 9y = 23

5x - 3y = -1

6 0
3 years ago
Twelve percent of the population is left handed. Approximate the probability that there are at least 20 left-handers in a school
DochEvi [55]

Answer:

Step-by-step explanation:

We would assume a binomial distribution for the handedness of the population. Let x be a random variable representing the type of handedness in the population. The probability of success, p is that a randomly chosen person is left handed only. Then probability of failure is that a chosen person is not left handed only(right handed only or both).

p = 12/100 = 0.12

number of success, x = 20

n = 200

the probability that there are at least 20 left-handers is expressed as P(x ≥ 20)

From the binomial probability calculator,

P(x ≥ 20) = 0.84

8 0
3 years ago
Please Help! I need the answer.
iren [92.7K]

Answer:

56

Step-by-step explanation:

3 0
3 years ago
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