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lesantik [10]
2 years ago
7

CAB SOMEONE HELP ME ASAP PLS

Mathematics
1 answer:
Anit [1.1K]2 years ago
3 0
A,
The shaded area for yellow is less than 1/5 of a circle, so the answer is the first one.
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The probability of a head is 0.27. The coin is thrown 200 times. Write an
Dvinal [7]

Answer:

The estimate for the amount of tails is 146.

Step-by-step explanation:

For each throw, there are only two possible outcomes. Either it is a head, or it is tails. Throws are independent. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

The probability of a head is 0.27.

This means that the probability of tails is p = 1 - 0.27 = 0.73

The coin is thrown 200 times.

This means that n = 200

Write an estimate for the amount of tails

This is the expected value, so:

E(X) = np = 200*0.73 = 146

The estimate for the amount of tails is 146.

3 0
2 years ago
Y=x2+3x+2 y=x2+5x-4 solutions
Klio2033 [76]

Answer:

 Slope = 1

 x-intercept = 2/1 = 2.00000

 y-intercept = 2/-1 = -2.00000

Step-by-step explanation:

Pulling out like terms :

2.1     Pull out like factors :

  -2x + 2y + 4  =   -2 • (x - y - 2)

Equation at the end of step  2  :

 -2 • (x - y - 2)  = 0

Step  3  :

Equations which are never true :

3.1      Solve :    -2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Equation of a Straight Line

3.2     Solve   x-y-2  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  x-y-2  = 0 and calculate its properties

Graph of a Straight Line :

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 2/-1 so this line "cuts" the y axis at y=-2.00000

 y-intercept = 2/-1  = -2.00000

Calculate the X-Intercept :

When y = 0 the value of x is 2/1 Our line therefore "cuts" the x axis at x= 2.00000

 x-intercept = 2/1  =  2.00000

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -2.000 and for x=2.000, the value of y is 0.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 0.000 - (-2.000) = 2.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

    Slope     = 1

Geometric figure: Straight Line

 Slope = 1

 x-intercept = 2/1 = 2.00000

 y-intercept = 2/-1 = -2.00000

Processing ends successfully

plz mark me as brainliest :)

6 0
3 years ago
Example 3: Seven sheets of coloured paper are on Shannon's desk. If there are four sheets
hoa [83]

Answer: she can stack the paper 57 ways

Step-by-step explanation:

3 0
2 years ago
4y³-2(2y-3)+y written in standard form​
Lady_Fox [76]

Mutiply the bracket by -2

(-2)(2y)=-4y

(-2)(-3)= 6

4y^3-4y+6+y

4y^3-4y+y+6 ( combine like terms)

4y^ 3-3y+6

Answer: 4y^ 3-3y+6

5 0
3 years ago
Juan works at thud movie theater for 4.5 hours each day. if he works 7 days over the 2 week schedule, how many hours has he work
snow_tiger [21]
4.5 hours x 7 days

31.5 hours

It is not 4.5 x 14 because he works 7 days over the 2 week schedule
3 0
3 years ago
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