All categories

3 years ago

Please help! I will mark you as brainliest!

Mathematics

1 answer:

pishuonlain [190]3 years ago

3 0

First flip

We know the probability of head is 2/7

Since only 2 things can happen, and both cannot happen at once (mutually exclusive), we write

P(tail) = 1 - P(head) = 1 - 2/7 = 5/7

The probability of tail is 1 minus probability of head.

Second flip

You're still using the sam coin, and whatever you got on the first flip doesn't affect your chances of getting head... on the second flip, I mean. So,

2/7; 5/7; 2/7; 5/7

from top to bottom

You might be interested in

simplify the following polynomial expression. <img src="https://tex.z-dn.net/?f=%285x%5E%7B3%7D%20%2B4x%5E%7B2%7D%20%2B6x-3%29%2

FrozenT [24]

Here is the answer hope it helps

7 0

4 years ago

Find the equation of line b described below, in slope-intercept form

Serjik [45]

Given:

Line a is perpendicular to line b .

Line a passes through the points (1,-8) and (9,-12) .

Line b passes through the point (-8, -16).

To find:

The equation of b.

Solution:

Line a passes through the points (1,-8) and (9,-12) . So, slope of line a is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

$m_a=\dfrac{-12-(-8)}{9-1}$

$m_a=\dfrac{-12+8}{8}$

$m_a=\dfrac{-4}{8}$

$m_a=-\dfrac{1}{2}$

Product of slopes of two perpendicular lines is -1.

$m_a\times a_b=-1$

$-\dfrac{1}{2}\times a_b=-1$

$b=2$

Slope of line b is 2.

If a line passing through a point $(x_1,y_1)$ with slope m, then equation of line is

$y-y_1=m(x-x_1)$

Line b passing through (-8,-16) with slope 2. So, equation of line b is

$y-(-16)=2(x-(-8))$

$y+16=2(x+8)$

$y+16=2x+16$

Subtract 16 from both sides.

$y=2x$

Therefore, the equation of line b is $y=2x$ .

7 0

3 years ago

Suzanne can read 1 page in 3 minutes. how many pages can she read in 5 hours?

pychu [463]

If Suzanne can read 1 page in 3 minutes, that means that in ONE hour, she can read 20 pages.
1 page per 3 minute
60minutes : 3 = 20 pages
Now, multiply 20 pages by 5 hours.
20 x 5 = 100.

I hope it helps! (She's pretty slow at reading)

4 0

3 years ago

Which of the following expressions has a value of 3? Select all that apply.

Tpy6a [65]

It would be (-1)(-3) :))

7 0

3 years ago

Triangle 2 and triangle 3 were created by drawing an altitude in triangle 1. What is the relationship between the green highligh

Naily [24]

Answer:

Triangle 1 line segment AB and triangle 2 line segment BA correspond to each other

Step-by-step explanation:

Point b and point a don't correspond to anything else

triangle 1 and 2 are congruent my answer would be a 50/50 guess between C and D If it were me id risk it and go D but it is up to you.

4 0

4 years ago