Work out the value of 3c - 4d when c = 5 and d = 1 over 2 ( 1 and a half )Please help me out with this one , thanks! From my maths homework , could you please show working out as well please?

Answers

Answer 1

Answer: $3(5)-4( (1)/(2))$

= $15-2$

Answer: $13$

I hope I helped :)

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Nadia surveyed 80 students at her school and found that 0.55 of the students she surveyed said their favorite class is math. Another 15% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?A. 12 B. 32 C. 44 D. 48
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A.) 40% of students in a school said they watchanime at least once a week. If the school has600 students, how many students watch anime?

Express 0.000000298 in scientific notation

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The expression would be 2.98 * 10 to the -7 power? Please tell me if I'm wrong.

in the central city grand prix out of 30 cars that started the race,12 of them finished. what percent of the cars finished the race? what percent did not finished the race?

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To get the answer we can use proportion.
30 ------------- 100%
12 --------------x
crossmultiply now
30x=12*100%
30x=1200% /:30 (divide both sides by 30)
x=40% - its the percentage of cars which finished the race.
100%-40%=60% - its the answer

Subtract 12 from 30 so that you know how many DID NOT finish. 30-12=18.
12/30 finished. Divide 12 by 30. 12÷30=0.4, and multiply by 100%. 0.4x100=40, so
40% finished.

18/30 did not finish. Divide 18 by 30. 18÷30=0.6, and multiply by 100%. 0.6x100=60, so
60% did not finish.

HELP PLEASE I REALLY NEED HELP PLEASE HELP!!

Answers

number one: the first choice
number two : the third choice

There are currently 3 people signed up for the debate club. The school will not recognize the club officially until it has more than 5 members. Which of the following graphs includes the possible values for the number of people who still need to sign up to make the club "official?" Number line with closed circle on 2 and shading to the left. Number line with closed circle on 2 and shading to the right. Number line with open circle on 2 and shading to the left. Number line with open circle on 2 and shading to the right.

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Answer:

Step-by-step explanation:

its two

A six-sided number cube with faces numbered 1, 2, 3, 4, 5, and 6 is rolled. Which events are mutually exclusive? A. rolling a 4, rolling a prime number

B. rolling a 3, rolling a prime number

C.rolling a 2, rolling an even number

D. rolling a 5, rolling an odd number

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The answer is A.

Mutually exclusive means something that can't happen at the same time.

You can't roll a 4 and say you got a prime number. So A is your answer.

B is wrong because if you roll a 3, you are also rolling a prime number.

C is wrong because if you roll a 2, you are also rolling an even number.

D is wrong because if you roll a 5, you are also rolling an odd number.

Hey there I see you need help well I am here to do just that the answer is

A. because mutually exclusive events are not possible so you cant roll a 4 and have it be a prime number

hope this helps

11/2÷3=? Write as a mixed number if possible

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11/2= (5.5)/3 = 1.83 (the three repeats on forever)

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