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bazaltina [42]
2 years ago
11

In the spelling bee contest, Jan answered 6 out of 8 questions correctly, Kara answered 78% of her questions correctly, and Bett

y answered 19 correctly and 6 incorrectly. Which list correctly orders the students' percentage of correct answers from greatest to least?
Mathematics
2 answers:
horsena [70]2 years ago
6 0

Step-by-step explanation:

Jan got 6 out of 8 correct which is 75%

Kara got 78%

Betty got 19 correct and got 6 wrong which is 76%

The order from greatest to least is

1.Kara

2.Betty

3.Jan

eduard2 years ago
5 0

Answer:

2/5 = 40%

43%

13/19 = 68.4%

Juan

Step-by-step explanation:

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The statement-10 ⁢-43
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3 years ago
Please explain how to do this, I'm using all my points<br><br>A. 40 L<br>B. 80 L<br>C. 4 L <br>D. 8L
exis [7]

Answer: choice A. 40 liters

====================================

Explanation:

x = number of liters of the 50% alcohol solution

If we have x liters of 50% alcohol, then we have 0.50*x liters of pure alcohol. This is added to 0.90*40 = 36 liters of pure alcohol (from the 90% solution).

So far we have 0.50*x + 36. This expression represents the total amount of pure alcohol. We want a 70% solution, so we want 70% of the total 40+x meaning 0.50*x + 36 is to be set equal to 0.70*(40+x) and we solve for x as shown below

0.50*x + 36 = 0.70*(40+x)

0.50*x + 36 = 0.70*(40)+0.70*(x)

0.50*x + 36 = 28+0.70*x

36 - 28 = 0.70*x - 0.50x

8 = 0.20x

0.20x = 8

x = 8/0.20

x = 40

So that is why the answer is choice A. 40 liters

6 0
2 years ago
The ratio of child to teen to adult tickets sold at a water park on Saturday was 4 : 1 : 2. A total of 294 tickets were sold. Ho
Gwar [14]
168
You add 4, 1, and 2 to get 7. You put 4/7=x/294. Then you use proportions to solve for x. 
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3 0
3 years ago
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(07.03 LC) The steps below show the incomplete solution to find the value of q for the equation 4q − 2q − 4 = −1 + 21: Step 1: 4
Elza [17]

Answer:

3: 2q − 4 = 20

Step-by-step explanation:

Solve for q:

2 q - 4 = 20

Add 4 to both sides:

2 q + (4 - 4) = 4 + 20

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2 q = 20 + 4

20 + 4 = 24:

2 q = 24

Divide both sides of 2 q = 24 by 2:

(2 q)/2 = 24/2

2/2 = 1:

q = 24/2

The gcd of 24 and 2 is 2, so 24/2 = (2×12)/(2×1) = 2/2×12 = 12:

Answer:  q = 12

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3 years ago
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valentinak56 [21]
I think it's 85 but Is this like a multiple choice question?
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3 years ago
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