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ra1l [238]
2 years ago
15

Which of the following statements is correct?

Mathematics
1 answer:
Montano1993 [528]2 years ago
5 0

Answer:

Systems of Equations often have infinite solutions.

Step-by-step explanation:

I don't know if there are 7 answers or what

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Cuánto le falta a 3/5para llegar a 9/10
Bumek [7]

Answer:

3/10

Step-by-step explanation:

3/5 se puede convertir en 6/10

(3x2)/(5x2).

9/10 - 6/10 = 3/10

le falta 3/10 para llegar a 9/10.

7 0
2 years ago
Is a half bigger then a third ?
Assoli18 [71]


1/2 plus 1/3 is 5/6.

You have to find the common denominator

7 0
2 years ago
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Determine the domain and range in the function, f(x)=abx<br> f(x)=ab^x , when a =1/4 and b=16.
Crank
The domain is infinite and the range is 0 (possibly infinite as well).
4 0
2 years ago
In 1982 Abby’s mother scored at the 93rd percentile in the math SAT exam. In 1982 the mean score was 503 and the variance of the
oksian1 [2.3K]

Answer:

The percentle for Abby's score was the 89.62nd percentile.

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(which is the square root of the variance) \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.

Abby's mom score:

93rd percentile in the math SAT exam. In 1982 the mean score was 503 and the variance of the scores was 9604.

93rd percentile. X when Z has a pvalue of 0.93. So X when Z = 1.476.

\mu = 503, \sigma = \sqrt{9604} = 98

So

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

1.476 = \frac{X - 503}{98}

X - 503 = 1.476*98

X = 648

Abby's score

She scored 648.

\mu = 521 \sigma = \sqrt{10201} = 101

So

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

Z = \frac{648 - 521}{101}

Z = 1.26

Z = 1.26 has a pvalue of 0.8962.

The percentle for Abby's score was the 89.62nd percentile.

3 0
3 years ago
HELP ME PLEASE!!!!!!!!!!
Maurinko [17]

Answer: option 3

Step-by-step explanation:

7 0
2 years ago
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