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3 years ago

9

If you flip a coin 4 times, what is the best prediction possible for the number of times it will land on tails?

1 answer:

allochka39001 [22]3 years ago

7 0

Answer:

2

Step-by-step explanation:

Each time you flip a coin, there is a 50% change of it landing on tails. So half the time you should get a tails.

Half of 4 is 2, so you will likely get 2 tails.

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Which of the following terms best describes a vertical line that the graph of a

Effectus [21]

Answer:

Might not be answer but.

Step-by-step explanation:

Parallel lines are coplanar lines (in the same plane) that never intersect (never cross each other). The slope of a line measures its steepness (or its angle from the horizontal). Lines that are parallel have the same steepness (or the same angle from the horizontal).

6 0

3 years ago

Simplify. Show your work. <br><br> ( 6x-2 ) ^2 ( 0.5x )^4

mrs_skeptik [129]

(6x-2)(6x-2) = 36x-12x-12x+4 = 36x+4

4 0

3 years ago

How many x-intercepts appear on the graph of this polynomial function? f (x) = x Superscript 4 Baseline minus 5 x squared 1 x-in

Brut [27]

Answer:

3 x-intercepts

Step-by-step explanation:

f(x) = x⁴ - 5x²

6 0

3 years ago

Read 2 more answers

umka2103 [35]

In this equation w = -1.1

In order to find this, get all w values to the right side and all numbers to the left side.

-2.27 + 9.1w + 1.3w = -3.4w - 17.45 ----> combine like terms

-2.27 + 10.4w = -3.4w - 17.45 ----> add 3.4w to both sides

-2.27 + 13.8w = -17.45 ----> add 2.27 to both sides

13.8w = -15.18 -----> divide both sides by 13.8

w = -1.1

4 0

3 years ago

Read 2 more answers

An art history professor assigns letter grades on a test according to the following scheme.A: Top 5% of scoresB: Scores below th

adoni [48]

Answer:

Grade B score:

$76 \leq x \leq 89$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73.3

Standard Deviation, σ = 9.7

We are given that the distribution of score on test is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

B: Scores below the top 5% and above the bottom 62%

We have to find the value of x such that the probability is 0.62

$P( X > x) = P( z > \displaystyle\frac{x - 73.3}{9.7})=0.62$

$= 1 -P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.62$

$=P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.38$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 73.3}{9.7} = 0.305\\\\x = 76.26$

We have to find the value of x such that the probability is 0.05

$P(X < 0.95) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 73.3}{9.7})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 73.3}{9.7} = 1.645\\\\x = 89.26$

Thus, the numerical value of score to achieve grade B is

$76 \leq x \leq 89$

7 0

3 years ago