3 years ago

The experimental probability of a biased coin landing on heads is 0.6

Mathematics

1 answer:

Setler [38]3 years ago

3 0

Answer:

Step-by-step explanation:

1-.60=.4 is the probability for tails

80x .40=32

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A right triangle, DEF, is shown below.<br><br> What is sin FDE?

RoseWind [281]

Answer:

22.6°

Step-by-step explanation:

Reference angle = <FDE

Side opposite to <FDE = 5

Hypotenuse = 13

The trigonometric ratios to apply is:

$sin(\theta) = \frac{opp}{hyp}$

Plug in the values

$sin(\angle FDE) = \frac{5}{13}$

$sin(\angle FDE) = 0.3846$

$\angle FDE = sin^{-1}(0.3846)$

$\angle FDE = 22.6$ (nearest tenth)

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3 years ago

4=x^2-7 solve each equation

jolli1 [7]

Answer:

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Step-by-step explanation:

4 = x^2 -7

Add 7 to both sides

11 = x^2

Square root both sides

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3 years ago

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Here is a line l. Plot 2 points, A and B, which stay in the same place when they are reflected over t. Plot 2 other points, C an

Bad White [126]

Answer:

A and B would be points located along the line itself.

C and D would be points either left or right of the line, but not on the line itself.

Step-by-step explanation:

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3 years ago

Find the equation of perpendicular bisector of the lines with the given word (1,2) and (5,4)

Mandarinka [93]

Answer:

y = -2x + 4

Step-by-step explanation:

Slope: (4-2)/5-1) = 2/4 = 1/2

Slope of the perpendicular line: -2

y-intercept: 2 - (-2)(1) = 4

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3 years ago

Two mechanics worked on a car. The first mechanic charged $115 per hour, and the second mechanic charged $50 per hour. The mecha

anygoal [31]

115*20=2300.
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First mechanic 20 hours
Second mechanic 5 hours

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