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GalinKa [24]
3 years ago
15

70% of Ms. Miller's class passed the test on the first try. Those who failed were able to retake and half of those students pass

ed on their second try. If there are 20 students in the class, what overall percentage passed the test?
Mathematics
1 answer:
MrRissso [65]3 years ago
5 0

Answer:

85%

Step-by-step explanation:

  1. Calculate how many students passed on their first try. 20 x 70% is 14, so 14 students passed on their first try.
  2. 6 students retook the test. Half of 6 is 3. Add 3 to the 14 students that passed earlier.
  3. Calculate the percent with the equation 17/20 = 0.85. 0.85 = 85%.
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Silvia was growing some plants. She measured the height, in inches, of the plants and made thisline plot to show her data:
FromTheMoon [43]

Answer:

The answer is C.

Step-by-step explanation:

The equivalents to 1/4 are 2/8, 3/12, 4/16 etc. So the fractions after 1/4 are higher than 1/4. Then you count how many 'x's are in the columns for those measurements and you will get 6.

5 0
3 years ago
How many centiliters are in 6.02 decaliters?
Aloiza [94]
1 centiliter is .01 of a liter. 

6.02 decaliter is 60.2 liters. 

6.02  decaliter is also 6020 centiliters 

So 6.02 decaliter is 6020 centiliters
6 0
3 years ago
Part of the population of 4,750 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 12
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876

Step-by-step explanation:

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7 0
3 years ago
Does anyone know this and can help please
adelina 88 [10]

Answer:

\frac{y^7z^3}{x}

Step-by-step explanation:

When variables have negative exponents, switch their positions.

\frac{x^{-1}y^7}{z^{-3}}=\frac{y^7z^3}{x}

5 0
3 years ago
Ashlyn needs to bring a dessert to her dinner party. If the bakery has eight pies to choose from, how many ways can Ashlyn choos
Snowcat [4.5K]

<u>Ashely have </u><u>56 ways</u><u> to choose from</u>

This question can be solved using a system in mathematics called Permutation and it's in a topic of mathematics called combinatorics.

<h3 /><h3>Permutation</h3>

This is the process of arranging a particular set of data in different ways.

Since Ashely is choosing 3 desserts out of 8 in no specific ways

P=\frac{n!}{(n-r)!}

Where n = total number of ways available

r = total numbers that would be selected.

Data given

  • n = 8
  • r = 3

Let's substitute these values into the equation.

P=\frac{8!}{(8-3)!3!} \\P=\frac{8*7*6*5*4*3*2*1}{5*4*3*2*1*3*2*1}\\P=56

From the calculation above, Ashley have 56 ways in which can choose 3 dessert from an 8 choice.

Learn more about permutation here;

brainly.com/question/11871015

8 0
2 years ago
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