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3 years ago

Simplify the expression by combining like terms. 6xy - 2y + 8y + 7xy + 5xy

1 answer:

5 0

First, connect the numbers with the same variables. -2y + 8y = 6y. Now 6xy + 7xy + 5xy = 18xy. Final answer is 6y + 18xy.

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After two weeks of training Amanda learn a total of 5 appetizer recipes after 6 weeks of training she will learn blank appetizer

galina1969 [7]

Answer:

She will learn 15 appetizer recipes.

Step-by-step explanation:

Here's why........because 2 weeks equals 5 so if you divide 6 and 2 you will get 3 and multiply that by 5 you get 15.

8 0

3 years ago

We often deal with weighted means, in which different data values carry different weights in the calculation of the mean. For

Veseljchak [2.6K]

Answer:

a) The student's overall average for the class is 87.97.

b) He would need a score above 100 to get an A, which means that he could not have scored high enough on the final exam to get an A in the class.

Step-by-step explanation:

Weighed average:

To solve this question, we find the student's weighed average, multiplying each of his grade by his weights.

Grades and weights:

Scored 82.5 on the midterm, worth 30%.

Scored 88.6 on the final exam, worth 30%.

Scored 91.6 on the homework, worth 40%.

a. On a 100-point scale, what is the student's overall average for the class?

Multiplying each grade by it's weight:

$A = 82.5*0.3 + 88.6*0.3 + 91.6*0.4 = 87.97$

The student's overall average for the class is 87.97.

b. The student was hoping to get an A in the class, which requires an overall score of 93.5 or higher. Could he have scored high enough on the final exam to get an A in the class?

Score of x on the final class, and verify that the average could be 93.5 or higher. So

$A = 82.5*0.3 + 88.6*0.3 + 0.4x$

$A \geq 93.5$

$82.5*0.3 + 88.6*0.3 + 0.4x \geq 93.5$

$0.4x \geq 93.5 - (82.5*0.3 + 88.6*0.3)$

$x \geq \frac{93.5 - (82.5*0.3 + 88.6*0.3)}{0.4}$

$x \geq 105.425$

He would need a score above 100 to get an A, which means that he could not have scored high enough on the final exam to get an A in the class.

3 0

3 years ago

The toy store has a box full of small rubber balls. In the box there are 25 glitter balls, 10 red balls, 20 purple balls, 10 str

viva [34]

It is A, the Child is equally likely to choose a Red or a stripped ball.

4 0

3 years ago

Read 2 more answers

Given P(A) = 0.6 and P(B) = 0.8, do the following. If A and B are independent events, compute P(A and B)

DochEvi [55]

Answer:

0.48

Step-by-step explanation:

$0.6*0.8 = 0.48$

5 0

3 years ago

On her test, molly scored a 90%. If she got 36 questions correct, how many questions were on the test

igomit [66]

Answer:

Step-by-step explanation:36+10

3 0

3 years ago