Hector had 30 minutes to do a three-problem quiz. He spent 11 3 4 minutes on question A and 6 1 2 minutes on question B. How much time did he have left for question C?

min

Step-by-step explanation:

In order to solve this problem, we must subtract the times he has already used from the time he has available, so we get:

we can start solving this subtraction by turning all of the numbers into improper fractions so we get:

next, we can find a least common denominator. In this case it will be 4, so we need to turn all denominators into a 4, so we get:

and now we can subtract the numerators and copy the denominators so we get:

which can now be turned into a mixed number by dividing 47/4 which yields 11 with a remainder of 3, so the mixed number is:

min

and this is the amount of time he has available to solve the las problem.

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.

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step-by-step explanation: