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3 years ago

NEED HELP RIGHT AWAY DONT HAVE ANY TIME TO WAIT!!

Mathematics

2 answers:

shtirl [24]3 years ago

6 0

Answer: There are 10 4-marks questions and 30 2-marks questions.

Fiesta28 [93]3 years ago

5 0

Question 1:
------------------------

Total points = 100
Total question = 40
Type of questions : 2-points question and 4-points questions

Assumed all 40 questions are 2-points questions.
Total points = 40 x 2 = 80

Difference in points = 100 - 80 = 20 points
Difference in the 2 type of questions = 4 - 2 = 2

Number of 4 marks questions = 20 ÷ 2 = 10

Number of 2 marks questions = 40 - 10 = 30

Answer: There are 10 4-marks questions and 30 2-marks questions.

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Question 2:
------------------------

Let x be the number of offices you need to clean.

Total cost = 315 + 4x
Total revenue = 25x

To break even,
315 + 4x = 25x
21x = 315
x = 15

Answer: You need to clean 15 offices to break even.

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Question 3:
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Total distance (including return trip) = 255 + 255 = 510 miles

Total time taken = 1.7 + 1.5 = 3.2 hours

Speed = Distance ÷ time

Speed = 510 ÷ 3.2 = 159.38 miles/hour

Answer: The average speed is 159.38 miles/hour

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Step-by-step explanation:

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Answer:

The correct answer is D. 360,360.

Step-by-step explanation:

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Therefore the number of ways the traveler plan such a tour is given by $\left[\begin{array}{ccc}15\\5\end{array}\right]$ = 3003.

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A recipe for apple pie calls for 1.2 kilograms of apples. If the average apple has a mass of 200 grams, how many apples should b

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