Answer:
The GCF of 42 and 55 is 1.
Step-by-step explanation:
sorry it took me a while to write in my book
42 AND 55 ARE A PAIR OF CO-PRIME NUMBERS
CO PRIME:a pair of numbers which have the only common factor as 1 is called as co prime
Answer:

Step-by-step explanation:
Since ED is parallel to CA, the two triangles in the figure share all 3 angles and therefore must be similar. By definition, the corresponding sides of similar polygons are in a constant proportion.
Therefore, we have:

Answer:125 students
Step-by-step explanation:if 5 out of every 32 students bikes
5=32
X=800
800(5)=4000
4000/32=125
Answer:

Step-by-step explanation:
x and 52 are supplementary, so they add up to 180°

Answer:
By the Chebyshev Theorem, at least 75% of commuters in Boston has a commute time within 2 standard deviations of the mean
Step-by-step explanation:
Chebyshev Theorem
The Chebyshev Theorem can also be applied to non-normal distribution. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
An in general terms, the percentage of measures within k standard deviations of the mean is given by
.
What minimum percentage of commuters in Boston has a commute time within 2 standard deviations of the mean
By the Chebyshev Theorem, at least 75% of commuters in Boston has a commute time within 2 standard deviations of the mean