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4 years ago

A number from 8 to 15 is drawn from a bag at random.What is the theoretical probability of drawing the number 12

Mathematics

1 answer:

Lesechka [4]4 years ago

4 0

Answer:

$\frac{1}{8}$

Step-by-step explanation:

In order to calcilate the probability of something to happen we need to knwo the total number of outcomes possible, in this case from 8 to 15, there are 8 numbers that can be drawn from the bag, if we want to draw only the number 12, there is only 1 possibility to draw it from the bag, then we just divide it:

$Probability=\frac{outcome-desired}{total-number-of-outcomes}$

$Probability=\frac{1}{8}$

$Probability=12.5%$

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7) In the barn there are 17 animals. Some are cows and some are ducks. There are 54 legs in all. Which system of equations below

nata0808 [166]

Answer: Either A or B

Step-by-step explanation:

Both A and B are the same answers, but the main answer should be

c+d=17, 4c+2d =54

C represents the number of cows and D represents the number ducks. The two and fours in front of the variables represents the number of legs the repesctive animal has.

c+d would mean how many animals are in the barn. Feel free to clarify the two same answers

4 0

3 years ago

6. Antonio is a freelance computer programmer. In his work, he often uses 2n, where n is the number of bits, to find the number

densk [106]

In general 2^n is the number of pieces of information n bits can store.

(a) Antonio can use the formula 2^n-1 to indicate the maximum size of numbers an n-bit word can store.
(b) for a 16-bit system, the maximum number of keys Millie can collect is 2^(16)-1 = 65536-1=65535
(c) For a 14 byte program, there are 14*8=112 bits.

5 0

3 years ago

Mary spent a total of $354.71 for a party. She spent $200.76 on food, plus an additional $30.79 for each hour of the party. How

Rainbow [258]

Answer:

Total is 5 hours.

Step-by-step explanation:

... in the attached picture.

Hope this helps!

Choose me for brainliest please!!!

7 0

2 years ago

In 2010, the population of a city was 161,000. From 2010 to 2015, the population grew by 8%. From 2015 to 2020, it fell by 6.7%.

solniwko [45]

Answer:

99%

Step-by-step explanation:

2010 population = 161,000

From 2010 to 2015, the population grew by 8%.

2010 to 2015 = 161,000 + (8% of 161,000)

= 161,000 + (0.08 * 161,000)

= 161,000 + 12,880

= 173,880

2010 to 2015 = 173,880

From 2015 to 2020, it fell by 6.7%

2015 to 2020 = 173,880 - (6.7% of 173,880)

= 173,880 - (0.067 * 173,880)

= 173,880 - 11,649.96

= 162,230.04

2015 to 2020 = 162,230.04

what percent did the city grow from 2010 to 2020.

= 161,000 / 162,230.04 × 100

= 0.9924179270374 × 100

= 99.241792703743

Approximately, 99% to the nearest whole number

4 0

3 years ago

Please help me please

zloy xaker [14]

Answer:

they are identical. proved below.

Step-by-step explanation:

formula: $sin(t)+sin(s) = 2sin(\frac{t+s}{2} )cos(\frac{t-s}{2} )$

using the formula to proof:

$sin9a+sin5a$

$2sin(\frac{9+5}{2})* cos(\frac{9-5}{2})$

$2sin7a * cos2a$

True. proved that they are identical.

7 0

3 years ago