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Monica [59]
3 years ago
14

Pedro is doing math exercises from a software program he recently purchased. In the program, you have to get at least 70% of the

problems in an exercise right in order to gain proficiency. So far, Pedro answered one question, and he didn't get it right. Suppose he answers 75% of the following q questions correctly and gains proficiency in the exercise. Write an inequality in terms of q that models the situation.
Mathematics
2 answers:
Nookie1986 [14]3 years ago
3 0
The inequality would be
0.75q ≥ 0.70(q+1)

q is defined as the number of questions he answers after the first one.  We are told he gets 75% of those correct; 75%=75/100=0.75.  This gives us 0.75q.

Since he gains proficiency on the exercises, the total number he gets correct has to be at least 70%.  This means the inequality would have the symbol greater than or equal to, as it cannot be less and have him gain proficiency.

He has already answered 1 question and answers q more; this gives us a total of q+1.  Since he gains proficiency, the cutoff was 70%; 70%=70/100=0.70.  This gives us the expression 0.70(q+1).

Our total inequality would then be 0.75q ≥ 0.70(q+1)
Temka [501]3 years ago
3 0

Answer:

0.75q ≥ 0.70(q+1).

Step-by-step explanation:

Not gonna lie, I had to get held on this one, a bit..

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ZanzabumX [31]
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3 years ago
The perimeter of a regular pentagon is represented by the expression 35d-25. Daryl correctly wrote expression to represent the o
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Answer:

Each one of the sides is equal to 7d-5

Step-by-step explanation:

A regular pentagon has 5 sides of equal length.

The perimeter of a regular pentagon is given by

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35d -25 = 5s

Divide each side by 5

(35d-25)/5 = 5s/5

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solniwko [45]

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Ulleksa [173]

Answer:

P(X=3) = 0.2013

Step-by-step explanation:

After taking and tagging the first 20 birds, then we have a proportion of 20% of tagged birds within the population, that is

p=\frac{n}{N}

p=\frac{20}{100}=0.20

Supposing that the probability (0.20) of capturing a bird <em>remains constant</em>, we may resolve it as it follows:

Capturing 10 birds can be considered as a binomial experiment with a success probability p = 0.2

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P(X=x)=0.2013

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5 0
3 years ago
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