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wlad13 [49]
3 years ago
5

SOMEONE PLEASE HELP ME ASAP PLEASE!!! ​

Mathematics
1 answer:
natulia [17]3 years ago
8 0

Answer:

1. Given

Step-by-step explanation:

Out of the answer choices, I have never seen B used in a proof.

The key word here is 'provided'.

Provide is a synonym for give- it basically means that the fact that 1 & 4 are vertical angles is given to you.

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A box has 11 marbles, 3 of which are white and 8 of which are red. A sample of 4 marbles are selected randomly from the box with
aliina [53]

14/99

Select 1 marble; the chance that it is white is 4/12. Select a 2nd marble; the chance that it is white is 3/11. Select a 3rd; the chance it is white is 2/10. Select a 4th; the chance it is red is 8/9. Select a 5th; the chance it is red is 7/8. The chance of getting this specific set of 5 marbles in this order is (4/12)×(3/11)×(2/10)×(8/9)×(7/8)=(2×7)/(11×10×9).

This specific set could occur in the permutation of 5 things taken 5 at a time where 3 are identical (white), and the other 2 are also identical (red). The formula for this is 5!/(3!2!)=10.

Combining the chance of getting white, white, white, red, red with the number of ways 3 white and 2 red could have been distributed in the draw of 5 marbles gives the answer:

{(2×7)/(11×10×9)}×10=14/99

A similar process will show that the chance of getting 5 red marbles is 7/99; 4 white and 1 red is 1/99; 2 white and 3 red is 42/99; and 1 white and 4 red is 35/99.

6 0
3 years ago
The half-life of caffeine in a person’s bloodstream is about 6 hours. If a person’s bloodstream contains 80 milligrams of caffei
Luda [366]
To calculate the remaining caffeine, we use the radioactive decay formula which is expressed as An = Aoe^-kt where An is the amount left after t time, Ao is the initial amount and k is a constant we can calculate from the half-life information. We do as follows:
 at half-life,
ln 1/2 = -k(6)
k = 0.12/hr

An = 80e^-0.12(14)
An = 15.87 mg
5 0
3 years ago
(3x - 20°<br> (3x – 20)°<br> 4xº<br> 4xº<br> (3x – 20°<br> (3x – 20)<br> What is the value of x?
sergij07 [2.7K]

Step-by-step explanation:

<h3>this is given that the figure is a hexagon</h3><h3>let give a name to the given hexagon be ABCDEF</h3>

<h3>Angle a + B + C + D = 720 ( Ls sum pro. of hexagon)</h3><h3>3x-20+3x-20+4x+4x+3x-20+3x-20 = 720</h3><h3>3x+3x+3x+3x+4x+4x-20-20-20-20 = 720 (rearranging)</h3><h3>20x - 80 = 720</h3><h3>20x = 720 + 80 </h3><h3>x=800/20</h3>

<h2>x = 40 degrees </h2>

<h3>3x-20 = 100</h3><h3>4x = 160</h3>

<h2>I HOPE THAT THIS ANSWER HELPS YOU</h2>
8 0
3 years ago
0.5 ft
algol13

Answer:

Huh I don’t understand this one but I got you

Step-by-step explanation:

5 0
3 years ago
Find the cost of 6 kg rice, if the cost of 10 kg rice is 325 rupees .​
Firlakuza [10]

Answer:

195 rupees

Step-by-step explanation:

10kg=325 rupees

6kg=?

Cross multiplication;

=6×325/10

=1950/10

=195 rupees

5 0
3 years ago
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