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Aleksandr [31]
4 years ago
6

Anyone know the answer to this ??

Mathematics
1 answer:
Hatshy [7]4 years ago
7 0
The first one : -6
the second : -14

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A bag contains 42 red marbles, 6 white marbles, and 8 gray marbles. You randomly pick out a marble, record its color, and put it
Elanso [62]
For any single draw,

\mathbb P(\text{white})=\dfrac6{42+6+8}=\dfrac6{56}
\mathbb P(\text{gray})=\dfrac8{42+6+8}=\dfrac8{56}

Drawing a white marble or a gray marble are disjoint events; only one of them can happen. So

\mathbb P(\text{white or gray})=\mathbb P(\text{white})+\mathbb P(\text{gray})-\underbrace{\mathbb P(\text{white and gray})}_0
\mathbb P(\text{white or gray})=\dfrac6{56}+\dfrac8{56}=\dfrac{14}{56}

Out of 224 draws, you should expect \dfrac{14}{56}\times224=56 of the marbles to be either white or gray.
6 0
4 years ago
Read 2 more answers
During the past year in the maternity ward of a hospital in a large city, 1,254 males were born and 1,462 females. If we can ass
Afina-wow [57]
\frac{1,254}{1,254+1,462} /  \frac{1,462}{1,254+1,462}\\ \frac{1,254}{2,716} / \frac{1,462}{2,716}\\\frac{627}{1,358} /  \frac{731}{1,358}

Chance of boy: 627/1,358

Chance of girl: 731/1,358
6 0
3 years ago
Please help me with this problem​
eimsori [14]

Find the equation of the first line using the two given points: (1,-1) (-1,-5)

Slope = change in Y over change in x:

Slope = (-5-(-1)) / (-1-(1) = -4/-2 = 2

Now find y intercept: y - y1 = m(x-x1) = y -(-1) = 2(x-1)

Simplify to get y = 2x-3

Now a perpendicular line has a opposite reciprocal slope.

The perpendicular line would be y = -1/2x - 3

You are told the y intercept is -4 units greater, so add -4 to -3 to get -7

The answer would be A. y = -1/2x-7

6 0
4 years ago
HELP PLEASE ILL GIVE BRAINLIST 8th grade ALGEBRA I INSERTED A PHOTO
Alex73 [517]

Answer:

No

Step-by-step explanation:

Solve it yourself, or ask your mom. They might help. So yeah um bye

6 0
2 years ago
Can someone help me please
antoniya [11.8K]

Answer:

6

Step-by-step explanation:

4 0
3 years ago
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