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Mice21 [21]
2 years ago
5

Graph -9x + 5y = 45​

Mathematics
2 answers:
Luda [366]2 years ago
8 0

Answer:

Step-by-step explanation:

katovenus [111]2 years ago
3 0
Make it into slope intercept form:
Y = mx + b
-9/5x + y = 9
y = 1.8x + 9
Find two points and graph
(0, 9), (-5,0)
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PLEASE HELP<br> NO LINKS
bezimeni [28]

Answer:

The first blank is $640.30

The second blank is 670

Step-by-step explanation:

6 0
3 years ago
In a certain year, when she was a high school senior, Idonna scored 671 on the mathematics part of the SAT. The distribution of
goldfiish [28.3K]

Answer:

Idonna's standardized score is 1.41.

Jonathan's standardized score is 0.55.

A.) Idonna's score is higher than Jonathan's

Step-by-step explanation:

Z-score:

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.

Idonna scored 671 on the mathematics part of the SAT. The distribution of SAT math scores in that year was Normal with mean 509 and standard deviation 115.

This means that her standardized score is Z when X = 671, \mu = 509, \sigma = 115. So

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

Z = \frac{671 - 509}{115}

Z = 1.41

Idonna's standardized score is 1.41.

Jonathan took the ACT and scored 24 on the mathematics portion. ACT math scores for the same year were Normally distributed with mean 21.1 and standard deviation 5.3 .

This means that his standardized score is Z when X = 24, \mu = 21.1, \sigma = 5.3

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

Z = \frac{24 - 21.1}{5.3}

Z = 0.55

Jonathan's standardized score is 0.55.

Due to the higher z-score, Iddona's has a higher score.

5 0
2 years ago
If invisible braces cost $500 more than metal braces. Metal braces cost $4,800. How much do invisible braces cost?
Gnesinka [82]
Invisible braces would cost 5300. I think that’s it. Hope that helped
4 0
3 years ago
Read 2 more answers
In a science test, Jamie solved 42 correct and 18 incorrect answers. What is the percentage of correct question?
uysha [10]
It would have to be B
4 0
2 years ago
Read 2 more answers
3 2/5 + 9 1/10= Simplest form
Talja [164]

Change each mixed fraction to improper

3 2/5 = 15/5 + 2/5 = 17/5

9 1/10 = 90/10 + 1/10 = 91/10

Find a common denominator. Multiply 2 to both numerator and denominator of 17/5

17/5(2/2) = 34/10

34/10 + 91/10 = 125/10

125/10

Simplify. Divide

125/10 = 12.5

12.5 is your answer

hope this helps

3 0
2 years ago
Read 2 more answers
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