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Rina8888 [55]
2 years ago
11

Please help i will give brainliest

Mathematics
2 answers:
Ket [755]2 years ago
6 0

Answer:

13

Step-by-step explanation:

stellarik [79]2 years ago
6 0

Answer: x=1

Step-by-step explanation:

Like x^2-4x+3=0 or sin(x)=1.

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Match the following items.
Pani-rosa [81]

This problem can be solved using probability, the equation of the probability of an event A is P(A)= favorable outcomes/possible outcomes. The interception of two probable events is P(A∩B)= P(A)P(B).

There are 12 black marbels, 10 red marbles, and 18 white marbels, all the same size. If two marbles are drawn from the jar without being replaced.

The total of the marbles is 40.

If two marbles are drawn from the jar without being replaced, what would the probability be:

1. of drawing two black marbles?

The probability of drawing one black marble is (12/40). Then, the probability of drawing another black marble after that is (11/39) due we drawing one marble before.

P(Black∩Black) = (12/40)(11/39) = 132/1560, simplifying the fraction:

P(Black∩Black) = 11/130

2. of drawing a white, then a black marble?

The probability of drawing one white marble is (18/40). Then, the probability of drawing then a black marble after that is (12/39) due we drawed one marble before.

P(White∩Black) = (18/40)(12/39) = 216/1560, simplifying the fraction:

P(White∩Black) = 9/65

3. of drawing two white marbles?

The probability of drawing one white marble is (18/40). Then, the probability of drawing another white marble after that is (17/39) due we drawed one marble before.

P(White∩White) = (18/40)(17/39) = 306/1560, simplifying the fraction:

P(White∩White) = 51/260

4. of drawing a black marble, then a red marble?

The probability of drawing one black marble is (12/40). Then, the probability of drawing then a red marble after that is (10/39) due we drawed one marble before.

P(Black∩Red) = (12/40)(10/39) = 120/1560, simplifying the fraction:

P(Black∩Red) = 1/13

4 0
3 years ago
By what percent will the fraction change if its numerator is increased by 25% and its denominator is increased by 20%
givi [52]

Answer: 4.7%

Step-by-step explanation:

3 0
3 years ago
a line passes through the point (6, -9) and has a slope of 3/2. write an equation in point-slope form for this line
Stella [2.4K]
Y=3/2x is the  answer
3 0
2 years ago
Read 2 more answers
Find the length of the radius of a sphere with a surface area of 5541.77 cm2.
ladessa [460]
The area of a sphere: A  = 4.π.R²

A= 5541.77 → 5541.77 = 4.π.R²

R² = (5541.77)/(4.π)
R² = 441; → R =√441; R = 21 cm

6 0
3 years ago
A bicyclist goes 43.54miles in 3.5 hours. What is her speed?
yuradex [85]
43.54 divided by 3.5= unit rate

12.44

8 0
3 years ago
Read 2 more answers
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