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Natalija [7]
2 years ago
10

On his math facts quiz, Jeremy missed 2 out of 11 questions. The next quiz 55 questions. How many can Jeremy expect to get corre

ct?
Mathematics
1 answer:
raketka [301]2 years ago
7 0

Answer: 45

Step-by-step explanation:

(11x5)-(2x5)=45 correct and 10 incorrect

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Crystal solved the following equation incorrectly. In which step did she make a mistake? A Step 1 B Step 2 C Step 3 D Step 4
dem82 [27]

Answer: i don't know

Step-by-step explanation:yep

6 0
2 years ago
Suppose that only 65% of all drivers in a certain state wear a seat belt. a random sample of 80 drivers is selected. what is the
jonny [76]

Answer:

Pr(X >42) = Pr( Z > -2.344)

                = Pr( Z< 2.344) = 0.9905

Step-by-step explanation:

The scenario presented can be modeled by a binomial model;

The probability of success is, p = 0.65

There are n = 80 independent trials

Let X denote the number of drivers that wear a seat belt, then we are to find the probability that X is greater than 42;

Pr(X > 42)

In this case we can use the normal approximation to the binomial model;

mu = n*p = 80(0.65) = 52

sigma^2 = n*p*(1-p) = 18.2

Pr(X >42) = Pr( Z > -2.344)

                = Pr( Z< 2.344) = 0.9905

7 0
3 years ago
A group of 10 friends ate dinner. They added a 15% tip, and it cost $99.50. What did the meal cost BEFORE the tip?
siniylev [52]
Cost of meal before tip is $86.52 

4 0
3 years ago
Read 2 more answers
Take some time to fill in your notes, the area that is not shown in this video. Fill in the table with the values you think are
joja [24]

The x-values are the heartbeat(s) and the y-values are the time(s)

<h3>How to determine the x and y values?</h3>

The variables are given as:

Time(s) and Heartbeat(s)

As a general rule, the action that is being done is the independent variable.

The action here is the heartbeat.

So, the x-values are the heartbeat(s) and the y-values are the time(s)

A possible value of this is;

x = 100, y = 60 seconds

So, the ordered pair is (100,60)

When represented as ratio, we have;

Ratio = 60/100

Simplify

Ratio = 0.6 heartbeat per second

Read more about ordered pairs at:

brainly.com/question/8406931

#SPJ1

8 0
1 year ago
Find the total value of an investment of $1030 at 4% for 2 years to the nearest dollar.
mel-nik [20]

Answer:

1114$

Step-by-step explanation:

3 0
2 years ago
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