I want a way to solve such a problem
1 answer:
<h3>Answer: Choice A) 11.4</h3>
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Explanation:
Refer to the table below.
The first step is to find the midpoint of each interval.
To do that, we add up the endpoints and divide by 2. The midpoint of the interval from 2 to 6 is 4 because (2+6)/2 = 8/2 = 4. Repeat these steps for the other intervals to find that the remaining midpoints are: 8, 12, 16, 20.
Overall, the midpoints from top to bottom are 4, 8, 12, 16, 20
Note how the midpoints are incrementing by 4 each time, which is the same distance between each successive left endpoint (and right endpoint endpoints as well).
Let's say m represents the set of midpoints which I'll form in the third column. Multiply the frequency column f by each corresponding midpoint m. The result fm forms the fourth column.
Add up everything in that fourth column to get 1140. We then divide that by the sum of the frequencies (100) to get 1140/100 = 11.4 which is the final answer. The average weight is 11.4 pounds.
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Answer:
Equation :
Gallons needed = gallons
Step-by-step explanation:
It is given that:
Gallons of paint used by Tyler =
Area of fence painted = 5/7
Let,
x be the whole fence needed to paint.
Because we know that 5/7 of the fence is painted with 5/4 gallons of paint.
Multiplying the equation with 7/5
Therefore,
Equation :
Gallons needed = gallons
Answer:
6 if 7 doesnt divide n, 42 otherwise. The only possible options are those 2.
Step-by-step explanation:
I will find the possible answers, since no options were given
, thus, 16 only has 2 as a prime divisor. We conclude that n = 4*k, with k an odd number. On the other hand,
, since the greatest factor between n and 45 is 3, then 5 is not a divisor of n, and n has the form 3*j, with j not a multiple of 3. Since 3 and 4 doesnt have common primes as factors, then j = 4*l, with l odd.
Thus n = 12 * j, with j a number that satisfies:
- 3 is not a divisor of j
- 2 is not a divisor of j
- 5 is not a divisor of j
Note that . 12 is not factor of 210, but 6 is. j doesnt have any prime divisor in common with 210, with the exception, maybe, of 7. So the greatest common factor of them is 1 or 7, depending on weather 7 divides j (or equivalently, n) or not. Therefore, the greatest common factor of n and 210 could be 6, if 7 does not divide n, or 6*7 = 42, if 7 divides n.
I hope that works for you!