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Dmitry [639]
2 years ago
11

In a 3-hr examination of 320 questions, there are 40 mathematics problems. if twice as much time should be allowed for each math

ematics problems as for each of the other questions, how many minutes should be spent on mathematics problems?
Mathematics
2 answers:
Alekssandra [29.7K]2 years ago
3 0
Total questions = 320 
Total mathematics problems = 40
Total non-mathematics problem = 320 - 40 = 280

Twice the amount of time is needed for mathematics problem.
40 x 2x + 280 x = 3 hours
80x + 280x = 3 hours
360x = 180 mins
x = 0.5 mins
2x = 0.5 x 2  = 1 min

Answer: 1 min should be spent on Mathematics problems
il63 [147K]2 years ago
3 0

Answer:

1 minute should be spent on each math problem

Step-by-step explanation:

Total questions = 320  

Mathematics problems = 40

Non-mathematics problem = 320 - 40 = 280

Twice the amount of time is needed for mathematics problem.

40 x 2x + 280 x = 3 hours

80x + 280x = 3 hours

360x = 180 mins

x = 0.5 mins

2x = 0.5 x 2  = 1 min

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3 years ago
PUT THESE NUMBERS IN ORDER GREATEST TO LEAST ✔✔ I WILL ADD BRAINLIST
Fiesta28 [93]

Answer:

2 12/16, 2 18/25, and lastly 2.

Step-by-step explanation:

Since 2 is least, we can put that at the end. That leaves us with 2 18/25 and 2 12/16. Since 12/16 is greater, we will put that as the greatest. 2 18/25 is in the middle. Hope this helps!

6 0
2 years ago
An isosceles triangle has a vertical angle of 108 and a base 20 cm long. Solve for the base angles in calculated altitude.
xeze [42]

Answer:

The base angles are 36° each

Step-by-step explanation:

An isosceles triangle is a triangle that has two of its sides and base angles to be equal.

If an isosceles triangle has a vertical angle of 108°, then the base angles will share the remaining angle in the triangle equally.

Since the sum of angles in a triangle is 180°

The remaining angle in the triangle = 180°-108°

= 72°

Since the base angles are equal, this remaining two angles will share angle 72° equally.

The base angles = 72°/2

The base angles = 36°

This shows that the base angles are 36° each.

8 0
3 years ago
Simplify 4/7 + 5/6 whoever possible
Pani-rosa [81]

Hey there!

4/7 + 5/6

≈ 24/42 + 35/42

≈ 24 + 36/ 42 - 0

≈ 59/42

≈ 1 17/42



Therefore, your answer is:

59/42 or 1 17/42

EITHER OF THOSE SHOULD WORK BECAUSE THEY ARE EQUIVALENT.


Good luck on your assignment & enjoy your day!



~Amphitrite1040:)

5 0
2 years ago
How much more is needed to make $10.00 4 dollars, 12 dimes, and 10 pennies
amid [387]

Answer:

4 dollars

7 dimes or $4.70.

Step-by-step explanation:

The 4 dollars, 12 dimes, and 10 pennies added up together is $5.30. You will subtract that from $10.00 and you will get $4.70. That will be 4 dollars and 7 dimes left that is needed, or $4.70.

6 0
2 years ago
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