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3 years ago

1point

Mathematics

2 answers:

JulsSmile [24]3 years ago

7 0

The answer to the question is 45

rjkz [21]3 years ago

4 0

Answer:

Step-by-step explanation:

All the explanation and steps are in the photo I attatched

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What is the slope of a line that goes through the points (-3, 4) and (2, 8) ?

skad [1K]

Step-by-step explanation:

Slope = y2-y1 / X2-x1

= 8-4/2-(-3)

=4/5

3 0

3 years ago

Meridith runs at a rate of 190 meters per minute. use the formula d= r times t to find how far she runs in 6 minutes.

Mariulka [41]

D= r×t
D= 190×6
D= 1140 meters

6 0

3 years ago

2) What is the inequality that this graph represents? -15 # 3 6 x

kvasek [131]

Answer: $y < -\frac{1}{2}x+3$

This is the same as writing y < (-1/2)x+3

==============================================================

Explanation:

The dashed boundary line goes through (0,3) and (4,1)

Apply the slope formula for those two points

m = (y2-y1)/(x2-x1)

m = (1-3)/(4-0)

m = -2/4

m = -1/2

The slope of the dashed line is -1/2. The y intercept is 3. So we go from y = mx+b to y = (-1/2)x+3 to represent the equation of the dashed line. This is the same as writing $y = -\frac{1}{2}x+3$

We shade below the dashed line to represent the inequality $y < -\frac{1}{2}x+3$ . Points in the shaded region are solutions to the inequality. One example point is (0,0).

Note that we don't have "or equal to" as part of the inequality sign because we are not including points on the boundary. A solid line, rather than a dashed line, would include points on the boundary.

3 0

3 years ago

Find the tangent of each angle that is not the right angle. Drag and drop the numbers into the boxes to show the tangent of each

omeli [17]

Answer:

tan D = $\frac{6}{11}$ or 0.545

tan F = $\frac{11}{6}$ or 1.833

Step-by-step explanation:

To find tangent is always $\frac{opposite}{adjacent}$

so the opposite of angle D is line EF which is 4.8 and the adjacent side is line ED which is 8.8 so $\frac{4.8}{8.8}$ which is $\frac{6}{11}$ or 0.545

The opposite of angle f is line ED which is 8.8 and the adjacent is line EF which is 4.8 so $\frac{8.8}{4.8}$ is $\frac{11}{6}$ or 1.833

3 0

4 years ago

Suppose you open a new game at the county fair. When patrons win, you pay them $3.00; when patrons lose, they pay you $1.00. If

tatyana61 [14]

Answer:

$E(X) = 1 *0.8 - 3*0.2 = 0.2$

so at the long run we can conclude that the best option is :

A) win 0.20 cents per play

Step-by-step explanation:

Previous concepts

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

The variance of a random variable X represent the spread of the possible values of the variable. The variance of X is written as Var(X).

Solution to the problem

Let X the random variable who represent the ampunt of money win/loss at the game defined.

The probability of loss $3.00 for this game is 0.2 and the probability of win is 1-0.2=0.8 and you will recieve $1.00 if you win. The expected value is given by:

$E(X) = \sum_{i=1}^n X_i P(X_i)$

And for this case if we replace we got:

$E(X) = 1 *0.8 - 3*0.2 = 0.2$

so at the long run we can conclude that the best option is :

A) win 0.20 cents per play

3 0

3 years ago