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3 years ago

I need help on this math homework.. Could someone please help?

Mathematics

2 answers:

ipn [44]3 years ago

4 0

I believe its C, It's just process of elimination.

Nitella [24]3 years ago

3 0

Answer is D
$768 \div 16 - 810 \div 18 = 3$
passion fruit has sold 3 more cups than berry juice

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|–9.23 – 1.79| – |–7.34 – 2.57| (25 points)

galina1969 [7]

Answer:

1.11

Step-by-step explanation:

First, you ignore the absolute value sign and subtract normally: –9.23 – 1.79 = -11.02, –7.34 – 2.57 = -9.91. Then now you add the absolute value to the numbers: |-11.02| - |-9.91| = 11.02 - 9.91 = 1.11.

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3 years ago

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lakkis [162]

Answer:

Step-by-step explanation:

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2 years ago

A credit card company decides to study the frequency with which its cardholders charge for items from a certain change of retail

gregori [183]

Answer:

15.87% of the total number of cardholder would be expected to be charging 27 or more in the study.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 25 charged purchases and a standard distribution of 2

This means that $\mu = 25, \sigma = 2$

Proportion above 27

1 subtracted by the pvalue of Z when X = 27. So

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

$Z = \frac{27 - 25}{2}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413

1 - 0.8413 = 0.1587

Out of the total number of cardholders about how many would you expect are charging 27 or more in the study?

0.1587*100% = 15.87%

15.87% of the total number of cardholder would be expected to be charging 27 or more in the study.

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3 years ago

If the radius of the circle was doubled what effect would it have on the area

ch4aika [34]

Answer:

Step-by-step explanation:

If the radius of a circle is doubled, the area of the circle will be quadrupled and the circumference will also be doubled. This makes sense because the area of a circle is directly proportional to the square of the radius of the circle (if the radius of a circle is increased x times, its area will be increased to x^2 times the original area), whereas the circumference is proportional to the size of the radius (if the radius of a circle is increased x times, its circumference will increase x times).

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3 years ago

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Find an equation for the line perpendicular to y = − 1 /9 x + 4 with x-intercept at x = -1

prisoha [69]

Y = (-1/9).x + 4
The slope m of the line perpendicular to y = (-1/9).x + 4 is equal to 9:
(if the product of 2 slopes = - 1, then the 2 lines are perpendicular)

y = 9x + b, Since it passes by the point (-1,0) , then:
0= 9(-1) + b and b = 9
Final equation:

y = 9x+9

6 0

3 years ago