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Sphinxa [80]
3 years ago
5

CAN SOMEONE FIND THE DECENCY OUT OF THEIR DAY TO ANSWER THIS, THIS IS THE 8TH TIME IM ASKING THIS QUESTION CUZ EVERYONE IGNORES

IT, AND IM CRYING ABOUT THIS CUZ ITS DUE IN A HOUR!!!!!! I NEED HELP, I DONT UNDERSTAND THIS!!!!
f(x) = -2/3x + 490
Explain what the graph of the function represents!
Mathematics
1 answer:
defon3 years ago
7 0

Answer:

the function represents a linear graph with a y-intercept of (0, 490) and a slope of -2/3.

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A teacher is making a history test composed of the same number of multiple-choice questions as short-answer questions. She estim
STALIN [3.7K]

Answer:

The inequality is 5.5n \leq 45

Step-by-step explanation:

Total time:

The total time to complete the test is the sum of the number of multiple-choice questions multiplied by the time it takes to solve each and the number of short-answer questions multiply by the time it takes to solve each.

In this question:

Same number(n) of both.

Multiple-choice takes 2 minutes, short-answer takes 3.5 minutes. The total time is given by:

T = 2n + 3.5n = 5.5n

Write an inequality to determine how many questions, n, the teacher can include if the test must take students less than 45 minutes to complete.?

This means that:

T \leq 45

So

5.5n \leq 45

The inequality is 5.5n \leq 45

5 0
3 years ago
Nina checks the temperature at 11:00 a.m. She notices if the temperature rises by 6 more degrees, it will break the record-high
ladessa [460]

Answer:

t=84-6

Step-by-step explanation:

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3 years ago
Lisa says that 43 is an odd number that is composite . Is she correct? Explain.
Assoli18 [71]

Lisa is incorrect although it is an odd number it is not composite. It only has itself and 1. Therefore its a prime number.

This is the definition for prime if you still dont understand.

A prime number is a whole number greater than 1 whose only factors are 1 and itself.

6 0
3 years ago
Read 2 more answers
You can work a total of no more than 35 hours each week at your two jobs. Housecleaning pays $7 per hour and your sales job pays
Alex787 [66]

Answer: 7x + 9y >_ (more or equal) 314

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Step-by-step explanation:

5 0
3 years ago
Suppose your statistics professor reports test grades as​ z-scores, and you got a score of 2.49 on an exam. ​(a) Write a sentenc
Oduvanchick [21]

Answer:

a) A z-score of 2.49 means that your grade was 2.49 standard deviations above the mean of all grades.

b) 1.39% of the class scored lower than your​ friend.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

You got a score of 2.49 on an exam. ​

(a) Write a sentence explaining what that means

A z-score of 2.49 means that your grade was 2.49 standard deviations above the mean of all grades.

(b) Your friend got a​ z-score of negative 2−2. If the grades satisfy the Nearly Normal​ Condition, about what percent of the class scored lower than your​ friend? ​

This percentage is the pvalue of Z = -2.2

So 0.0139 = 1.39% of the class scored lower than your​ friend.

7 0
3 years ago
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