All categories

3 years ago

Which phrase represents the algebraic expression for n – 4?

Mathematics

2 answers:

pishuonlain [190]3 years ago

6 0

Step-by-step explanation:

B. Four less than a number.

Roman55 [17]3 years ago

5 0

B, it is four less than a number

You might be interested in

If xy is rational, must either x or y be rational?

VashaNatasha [74]

B- No; because the product of two irrationals can also be rational

6 0

3 years ago

Read 2 more answers

Assume that the last two digits on a car number plate are equally likely to be any of the one hundred outcomes {00, 01, 02, ....

gizmo_the_mogwai [7]

Answer:

1) Probability that Peter wins = PeW = 48.53%, while the probability that Paul wins = PaW= 1-PeW = 51.47% (Peter si favoured)

2) The bet will be pretty fair at n=16 or 17

Step-by-step explanation:

Since each car number plate is independent of the others, then the random variable X=number of cars that have the same last two digits follows a binomial distribution. Thus the probability distribution is

P(X) = n!/((n-x)!*x!)*p^n*(1-p)^(n-x)

where

p= probability that a car has the same last 2 digits = {00, 11, ...,99}/{00, 01, 02, ........ 98, 99} = 10/100 = 1/10

n= number of cars = 16

Then the probability that Peter wins PeW is:

PeW=P(X≥2) = 1- P(X<2) = 1- F(X=2) = 1 - 0.5147 = 0.4853 = 48.53%

therefore

Probability that Peter wins = PeW = 48.53%

Probability that Paul wins = PaW= 1-PeW = 51.47% (Peter si favoured)

for n=17 , PeW = 0.518 , PaW= 0.482

for n=15 , PeW = 0.450 , PaW= 0.548

then the bet will be pretty fair at n=16 or 17

6 0

3 years ago

I really really need help with this..

shtirl [24]

I feel really bad because this is hard and no one is helping you so try using this website it is called wolfram alpha and if you can't find help on that website just ask your teacher for help. I'm sorry I feel bad for you!

6 0

3 years ago

Give three points that lie on a line with a<br>slope of -2/5

Luda [366]

Answer:

The three points that lie on a line y = -2/5x with a slope -2/5 will be:

(0, 0)

(5, -2)

(10, -4)

Please check the attached graph also.

Step-by-step explanation:

We know that the slope-intercept form of the line equation is

$y = mx+b$

where m is the slope and b is the y-intercept

Given

slope = m = -2/5

We suppose the line passes through the origin.

so b = 0

substituting m = -2/5 and b = 0 in the slope-intercept form

$y = mx+b$

y = -2/5x + 0

y = -2/5x

Thus, the equation of line with the slope m = -2/5 and passes through the origin (0, 0) will be:

y = -2/5x

As the equation of line passes through (0, 0), thus the point (0, 0) lies on the line.

Putting x = 0 in the equation y = -2/5x

y = -2/5 × (0)

y = 0

Thus, (0, 0) is the point which also passes through the line

Putting x = 5 in the equation y = -2/5x

y = -2/5 × 5

y = -2

Thus, (5, -2) is the point which also passes through the line

Now, putting x = 10 in the equation y = -2/5x

y = -2/5 × 10

y = -4

Thus, (10, -4) is the point which also passes through the line.

Thus, the three points that lie on a line y = -2/5x with a slope -2/5 will be:

(0, 0)

(5, -2)

(10, -4)

Please check the attached graph also.

5 0

3 years ago

Directions: For the following systems, determine whether or not the ordered triple (1, -1, -2) is a solution to the equations be

Fofino [41]

Answer:

Step-by-step explanation:

Put x = 1, y = -1 and z = -2 to the equation 3x - 3y - z = 2, and check the equality:

3(1) - 3(-1) - (-2) = 3 + 3 + 2 = 8 ≠ 2

8 0

3 years ago