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serious [3.7K]
3 years ago
7

There is a bag filled with 3 blue and 4 red marbles.

Mathematics
1 answer:
Tasya [4]3 years ago
4 0

Answer:

here

Step-by-step explanation:

The probability of getting 1 red is 4/7. The probability of getting 2 reds in a row is (4/7)^2 = 16/49.

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Solve l 3x-7 l = 2
Lelechka [254]

Answer:

1) Solutions are x = 3 and x = 5/3

2) Solution are x ≤ 13/2 and  x ≤ -3/2

Step-by-step explanation:

1) Given absolute inequality,

|3x-7| = 2

⇒ 3x - 7 = ± 2

⇒ 3x = 7 ± 2

\implies x=\frac{7\pm 2}{3}

x=\frac{7+2}{3}\text{ or }x=\frac{7-2}{3}

\implies x = 3\text{ or }x=\frac{5}{3}

2) l 2x-5 l ≤ 8

⇒  2x-5  ≤ ±8

⇒   2x ≤ 5 ± 8

\implies x\leq \frac{5\pm 8}{2}

x\leq \frac{5+8}{2}\text{ or }x\leq \frac{5-8}{2}

\implies x \leq \frac{13}{2}\text{ or }x\leq-\frac{3}{2}

8 0
3 years ago
Read 2 more answers
Solve the proportion 20/3=?/6
Zepler [3.9K]
It equals 40/6. I hope this helps. Good luck!
7 0
3 years ago
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The first quartile of a data set is 18, the median is 25, the third quartile is 28,
laila [671]
The outlier would be shown as a dot so the answer is B. 45
The interquartile range is 28 - 18 = 10
A simple rule is that points more than 1.5xIRQ above or below the medians is an outlier and is shown as a point.
28 + 1.5x10 = 43. 45 is above this value.
7 0
1 year ago
Plz help me, it's urgent​
antiseptic1488 [7]
The answer is this!

6 0
2 years ago
Write an expression for the sequence of operations. Add 3 to x, double what you have, then subtract 1 from the result
galina1969 [7]

Answer:

[2(x+3)]-1

Step-by-step explanation:

7 0
3 years ago
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