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Nadusha1986 [10]
3 years ago
14

Sofia is taking a multiple choice test with a total of 80 points available. Each question is worth exactly 4 points. What would

be Sofia's test score (out of 80) if she got 4 questions wrong? What would be her score if she got
x questions wrong?
Mathematics
1 answer:
svet-max [94.6K]3 years ago
5 0

Answer: if she got four wrong the answer is 64

Step-by-step explanation:80/4 is 20 so that means there is 20 question any amount of questions she got wrong multiply by 4 would give you the number to subtract from 80

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Answer:

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A lake has a small population of a rare endangered fish. The lake currently has a population of 10 fish. The number of fish is i
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Answer: 1) After 17.673 years ( Approx) the population will be doubled.

2) After 53.019 years the population will be 80.

Step-by-step explanation:

1) Let x represents the number of years after which the population will doubled,

Since rate of interest = 4%

And, initial number of fish = 10,

Hence the fish after x years = 10(1+\frac{4}{100})^x =10(1+0.04)^x =10(1.04)^x

⇒ 10(1.04)^x = 20

⇒ (1.04)^x = 2

⇒ x log (1.04) = log(2)

⇒ x = \frac{log(2)}{log(1.04)}=17.6729877\approx 17.673

Hence, After 17.673 years ( Approx) the population will be doubled.

2) Let after y years the population will be 80.

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⇒ (1.04)^x = 8

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Hence, After 53.019 years the population will be 80.

8 0
4 years ago
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Answer: S={(1,H) , (1,T) , (2,H) , (2,T) , (3,H) , (3,T) , (4,H) , (4,T) , (5,H) , (5,T) , (6,H) , (6,T)}


Step-by-step explanation:

Given: A number cube is rolled and a coin is flipped.

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Then the sample space will contain pairs in which the first one shows the number on dice and the second one shows the the outcome for coin after dice is thrown.

Now, the required sample space will be

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