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ioda
2 years ago
13

The final grade in a biology course is determined by a score from 0 to 100, which has three components; a laboratory component o

f 25%, two hour-exams that together contribute 25% and a final exam that contributes 50%. There are 100 possible points for the laboratory, 50 possible points for each hour exam and 100 possible points for the final. A student in the course got 75 points for the laboratory, 40 and 38 points for the two hour exams and 85 points for the final. use weighted mean to determine his overall score (from 0 to 100) for the course
Mathematics
1 answer:
vovangra [49]2 years ago
7 0

Answer:

75*25%+(38+40)*50%+85*25%=59.5

Step-by-step explanation:

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Translate the sentence into an equation.
zavuch27 [327]
Answer:
2*(b-6)=8

Explication:
1.divide both sides by 2
b - 6 = 4

2. move the constant to the right and change the sign
b= 4 + 6

3. Calculate
b= 10

7 0
3 years ago
Samuel is looking at the floor plan of his house to determine how much carpet he needs to buy for his basement. Based on the flo
DerKrebs [107]

Answer:

B) First, find two areas using (4m x 10m = 40m2) and (8m x 3m = 24m2). Next, add (40m2 + 24m2 = 64m2).

Step-by-step explanation:

Samuel should is looking to find the area of his basement in order to cover it with carpet.

An area is calculated by multiplying two dimensions (so answers A and D are not it).

Best solution is to divide the area into two large rectangles then ADD them together to get the total area.

The only scenario where he could have subtracted something based on his plan is if he would have multiplied the 10m by the 12m then subtracted the area that is not part of his basement (7mx8m).  He would have achieved the same result of course, but by going a different way.

3 0
3 years ago
Solve the absolute value equation. 4|4x - 3| - 8 = -4​
soldier1979 [14.2K]

Answer:

x = 1,\frac{1}{2}

Step-by-step explanation:

4|4x-3|-8=-4\\

Add 8 to both sides;

4|4x - 3| = 4               4|4x - 3| = -4

Divide both sides by 4;

4x - 3 = 1                   4x - 3 = -1

Add 3 to both sides;

4x = 4                       4x = 2

Divide both sides by 4;

x = 1             x = \frac{1}{2}

8 0
2 years ago
If your not in 5th or higher grade don't answer my question
scoundrel [369]

Answer:

ok loll

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
for every girl taking classes at the martial arts schools there are 3 boys who are taking classes at the school. if there are 23
Yuliya22 [10]

You have to be very careful how you set this up. For every girl (who counts as 1) there are 3 boys (who count as 3). The total number in the proportion is 3 + 1 =4. You are given a total, but that is both boys and girls. That's why you need the 4.

3/4 = x / 236 Cross multiply

4x = 3 * 236

4x = 708 Divide by 4

x = 708/4

x = 177

There are 177 boys at the school and 236 - 177 = 59 girls.

3 0
2 years ago
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