Answer:
To make a high estimate for the sum of two fractions, find the commnon denominator and add them.
Step-by-step explanation:
To make a high estimate for the sum of two fractions in a word problem, rhe following steps are required.
Let the two fractions be represented as and
To perfrom the operation +
Step 1 : Check if the denominators of the fraction are same. If so then, then add the numerators directly by keeping the same denominator.
Step 2: If the denominators are different, then find the common denominator between the fractions and multiply them accordingly. Then perform the addition operation.
a. 60% of 120 is 72. 72 +120 is 192. they will sell the bike for $192
b. 30% of 192 is 57.6. 192-57.6 =134.4. the sale price is $134.40
c. they will make $14.40 because $134.40-$120=$14.40
Answer:
32% of the students did not have a pet.
Step-by-step explanation:
From the total students (100%):
- 1/4 of them had a dog only,
. Then, 25% had a dog only. - 20% only had a cat.
- 15% had multiple pets.
- 0.08=8% only had other than cats or dogs.
- <u>Adding up all these cases, we obtain the proportion of students that had at least one pet:</u>
. Then, 68% of the students did have a pet. - The rest of the students
, did not have any pet.
The variance of a constant is zero. Rule 2. Adding a constant value, c, to a random variable does not change the variance, because the expectation (mean) increases by the same amount. ... Multiplying a random variable by a constant increases the variance by the square of the constant.
32 because if you do 13×3, it ia 39. Since it is a rectangle, you do 13+13=26 then 3+3=6. The 26+6=32
