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Vitek1552 [10]
4 years ago
15

Q3. Samir spins a fair coin and records the results. In the first four spins ‘Heads’ comes up each time. Samir says, ‘A head is

more likely than a tail’. Is he correct? YES/ NO Give a reason for your answer.
Mathematics
1 answer:
spin [16.1K]4 years ago
6 0

Answer:

Step-by-step explanation:

No, he is not correct.  A defect in the coin, or a rough surface, could affect the outcome (which in theory should be "the probability of getting heads" is 0.50.

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Julia is going to the store to buy candies. Small candies cost $4 and extra-large candies cost $12.She needs to purchase at leas
BartSMP [9]

Answer:

Small candies =9

Extra large candies =12

Step-by-step explanation:

Let small candies =x

Extra large candies =y

the number of candies is at least 20.

x+y\geq20

Cost of 1 small candy =\$4

Cost of 1 extra large candy =\$12

but she has only \$180 to spend

4x+12y\leq180

Solve for

x+y=20.......(1)\\4x+12y=180.....(2)\\eqn(2)-eqn(1)\times4\\8y=100\\y=\frac{100}{8} \\y=\frac{25}{8} \\from\ eqn(1)\\x+\frac{25}{2}=20\\ x=20-\frac{25}{2} \\x=\frac{15}{2}

Since number of candies should be integer.

let x=7,y=13

total spend 4\times7+12\times13=184 which is more than \$180, so this combination is not possible.

let\ x=8,y=12\\8\times4+12\times12=176

She has \$4 more so she can buy 1 more small candy.

Hence  small candy =9

extra large candy =12

4 0
3 years ago
Gary made $6,975 working 25 hours a week for 18 weeks. How much did he earn per hour?
tamaranim1 [39]
He earns $15.50 per hour.
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3 years ago
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Jack has 120 songs on his music player. Some are rock, some are jazz, and the rest of classical pieces. If his music player is o
muminat
2/5 and 1/3 have a common denominator of 15. 6/15, 5/15, and 4/15 add up to 15/15. So the chances of rock are 4/15. 120 divided by 15 is 8. Six times eight equals fourty eight, five times eight equals forty, and four times eight equals thirty two. So there are 48 classical songs, 40 jazz songs, and 32 rock songs.
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3 years ago
Ribbon candy cost 2.50 per foot. How many feet can you buy if you have 11.25?
netineya [11]

Answer: your answer is 4.5

Step-by-step explanation: your answer is 4.5 because 11.25/2.50=4.5

:)

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3 years ago
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I need help with 29 c
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The answer is b becuase my sister had that homework
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