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Dima020 [189]
3 years ago
15

A trapezoid has height h. One base is

Mathematics
1 answer:
Montano1993 [528]3 years ago
8 0

Answer:

A = 3h^2 - 2h

Step-by-step explanation:

First lets find out what each of the bases is

b_{1} =h -4\\\\\\b_{2} =5h

Next, we can use the equation for the area of a trapezoid, which is

A=\frac{b_{1} +b_{2}}{2} h

Now we can plug in each of the values that we have for the bases and then solve for A.

A=\frac{ h-4 + 5h}{2}h\\\\A=\frac{6h-4}{2}h\\\\A = (3h - 2)h\\\\A=3h^2-2h

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A student's course grade is based on one midterm that counts as 15% of his final grade, one class project that counts as 15% of
kow [346]

Answer:

Overall final score = 77.75% ; Grade = C.

Step-by-step explanation:

The approach to solve this question is to realize that the marks have to be converted into the respective percentages of the whole course. This means that the marks of all the components have to be normalized according to the grading breakdown.

Project Marks = 97/100. Weightage = 15%. So 97*15/100 = 14.55/15.

This means that the student received 14.55 marks in the project out of 15.

Similarly for other components:

Mid-Term Marks = 83/100. Weightage = 15%. So 83*15/100 = 12.45/15.

Homework Marks = 82/100. Weightage = 35%. So 82*35/100 = 28.7/35.

Finals Marks = 63/100. Weightage = 35%. So 63*35/100 = 22.05/35.

After the conversion process, add up the normalized marks, which are now acting as the percentages earned in all the components.

Aggregate Percentage = 14.55 + 12.45 + 28.7 + 22.05 = 77.75%.

According to the grade scale, the student receives a C because 70 is less than 77.75 and 77.75 is less than 80.

Summarizing, the student receives a C at 77.75%!!!

7 0
3 years ago
2x - 2y = 2 and 7 = -x​
Elina [12.6K]

Answer:

y = -6

Step-by-step explanation:

6 0
3 years ago
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Ksivusya [100]

Answer:

exact form: 69/8

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Step-by-step explanation:

                          ^

1/4 ÷ 2/5 = 5/8   |

5/8+8 = ______|

6 0
2 years ago
Can someone please help me
Sloan [31]

Answer:

B

Step-by-step explanation:

minimum = 1

first quartile = 12

median = 6

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6 0
2 years ago
A 24fl oz jar of spaghetti sauce sells for 2.69.Another jar that holds 1 qt of sauce sells for 3.29. Which is a better buy?
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12 oz jar = 360ml so 24 oz = 720 ml and costs $2.69
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