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Ira Lisetskai [31]
3 years ago
14

To get a grade of c in your course you must average at least 75% on 4 exams. you have taken the first three exams and gotten sco

res of 68,78, and 81. what must you score on the last exam to get a c or better
Mathematics
1 answer:
lara31 [8.8K]3 years ago
3 0
The total of the scores on the 4 exams must be at least 75 x 4 = 300.
The total scores in the first 3 exams is 68 + 78 + 81 = 227.
Therefore the minimum score needed on the last exam is 300 - 227 = 73.

The answer is a score of at least 73.

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I need the answers and the work plsss help
Ilya [14]

The area of the room is 147.5 square feet so Michelle's reasoning was incorrect.

Step-by-step explanation:

Step 1:

To calculate the area of the given room, we divide the unknown shape into known shapes.

The room's shape is made of 2 rectangles.

The area of a rectangle is the product of its length and its width.

One rectangle has a length of 10 feet and a width of 12 1/2 feet.

The other rectangle has a length of 15 - 10 = 5 feet and a width of 4 1/2 feet.

Step 2:

The area of the first rectangle = (10)(12 1/2) = (10)(12.5) = 125 square feet.

The area of the second rectangle (10)(4 1/2) = (5)(4.5) = 22.5 square feet.

The total area of the room = 125 + 22.5 = 147.5 square feet.

3 0
2 years ago
Read 2 more answers
In the figure, lines a, b, and c are parallel and m∠4=68° . Drag and drop the correct angle measure for each angle. m∠1 = m∠2 =
melisa1 [442]
The complete question in the attached figure

we have that
<span>m∠4=68°

we know that
</span>m∠4 and m∠3 are supplementary angles
so
m∠3=180-m∠4----- m∠3=180-68------> m∠3=112°

m∠3 = m∠2 --------> by alternate interior angles
so
m∠2=112°

m∠1 = m∠4 --------> by alternate exterior angles
so
m∠1=68°

m∠5 = m∠4---------> by corresponding angles
so
m∠5=68°

the answers are
m∠1=68°
m∠2=112
m∠3=112°
m∠5=68°



3 0
3 years ago
Read 2 more answers
A tip in a restaurant has been typically figured at​ 15% of the total bill.
Anastasy [175]

Answer:

4.5 dollars (before tax id assume)

5 0
3 years ago
The hypotenuse of right triangle ABC, line segment AC, measures 13 cm. The length of line segment BC is 5 cm. What is the approx
malfutka [58]

Answer:

B: 44.8

Step-by-step explanation:

3 0
2 years ago
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Is 2x-4=2x-7 infinite no solution or one solution
Elan Coil [88]

Answer:

no solution

Step-by-step explanation:

8 0
3 years ago
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