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madreJ [45]
3 years ago
11

a number between 1 and 3 is chosen 30 times. result 1,2,3 frequency 8,12,10. what is the theoretical probability of choosing a 2

? Answers: 1/8, 1/3, 2/5, 4/10
Mathematics
1 answer:
MArishka [77]3 years ago
4 0

Answer:

1/3

Step-by-step explanation:

Theoretical probability makes it so all 3 numbers have the same chance of being picked.

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Which quadratic function is represented by the graph?
Fantom [35]

Answer:

y=5(x-7)(x-5)

Step-by-step explanation:

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3 years ago
Write the equation of the line that passes through the points (2, 3) and (3, -7). Put
FrozenT [24]

Answer:

y - 3 = -10 (x-2)

Step-by-step explanation:

The point-slope formula is y-y_1 = m (x-x_1). When knowing the slope of a line and a point it intersects, we can write its equation with that formula. Substitute m, x_1, and y_1 for real values.

1) First, find m, or the slope. Use the slope formula m = \frac{y_2-y_1}{x_2-x_1} and substitute the x and y values of the given points. Then, solve:

m = \frac{(-7)-(3)}{(3)-(2)} \\m = \frac{-7-3}{3-2} \\m = \frac{-10}{1} \\m = -10

Therefore, the slope of the line is -10.

2) Now, substitute the needed real values into the point-slope formula, y-y_1 = m (x-x_1). Since m represents the slope, substitute -10 in its place. Since x_1 and y_1 represent the x and y values of a point the line crosses, choose any of the points given and substitute its values into the formula. (Either one is fine, they both equal the same thing. I chose (2,3).) This will give the following answer and equation:

y - 3 = -10 (x-2)

7 0
3 years ago
2y+5y-3yTo the second power
gogolik [260]

Answer:16y I think

Step-by-step explanation:

Take out the y, 2+5-3 is 4, and to the second power is multiplying 4 twice, so 16. theyre all have the same variable to the right, so 16y

7 0
3 years ago
Read 2 more answers
Please help me! yah thats all i just need help
Verdich [7]

Answer:

WT=63

Step-by-step explanation:

\frac{56}{5 \times x + 3}  =  \frac{40}{4 \times x - 3}  \\ x = 12

So

5 \times x + 3 = 5 \times 12 + 3 = 63

6 0
2 years ago
The midpoint of JK is M(4, 5). One endpoint is J(5,2). Find the coordinates of the other endpoint K.
Bogdan [553]

Answer:

9

Step-by-step explanation:

not 9

7 0
3 years ago
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