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Airida [17]
3 years ago
8

If a number a is chosen at random from the set

Mathematics
1 answer:
Paraphin [41]3 years ago
7 0

Answer:

D. 3/19

Step-by-step explanation:

12/1 = 12

12/2 = 6

12/3 = 4

These are the only ones that make the equation true.

There are also only 19 numbers because they need to be less than 20 like the question indicated. Therefore, the answer is D.

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The product of -3 and -7 is positive.<br><br><br> True or False
bagirrra123 [75]

Answer:

false

Step-by-step explanation:

cuz how could negative be positive

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(07.01 LC) Olivia rolls two fair number cubes numbered from 1 to 6. She first defines the sample space as shown below: (1, 1), (
belka [17]
Olivia's sample space consists of 36 pairs. Three (3) of them give a total of 10: (4, 6), (5, 5), (6, 4).

The probability of getting a total of 10 is 3/36 = 1/12.
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The volume of a cone is 3 cubic units and its height is x units. Which expression represents the radius of the cone base, in uni
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3 years ago
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Solve the equation -5 = c/7
sweet-ann [11.9K]
Multiply both sides by 7.

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c = -35

Your final answer is c = -35.
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Solve the system of linear equations by elimination 2x+7y=1 2x-4y=12
pishuonlain [190]

\left\{\begin{array}{ccc}2x+7y=1\\2x-4y=12&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+7y=1\\-2x+4y=-12\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad\qquad11y=-11\qquad\text{divide both sides by 11}\\.\qquad\qquad \boxed{y=-1}\\\\\text{Put the value of y to the first equation:}\\\\2x+7(-1)=1\\2x-7=1\qquad\text{add 7 to both sides}\\2x=8\qquad\text{divide both sides by 2}\\\boxed{x=4}\\\\Answer:\ \boxed{x=4\ and\ y=-1\to(4,\ -1)}

3 0
4 years ago
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