PLEASE HELP !! Ty!

Mathematics

2 answers:

sleet_krkn [62]2 years ago

7 0

Answer:

$3.75

Step-by-step explanation:

vekshin12 years ago

5 0

Answer: $0.05 x 75 = $3.75

Step-by-step explanation:

So 1 hour is 60 minutes and 1/4 hour is 15 minutes. Add these together to get 75 minutes. Multiply 75 minutes by 0.05 cents and you get $3.75.

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3^2x+1=9^2x-1 solve the equation

stich3 [128]

9x+1 =81x-1

2 = 72x

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2 years ago

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A store buys frozen burritos from a supplier for $1.40 each. The store adds a markup of 80% to determine the retail price. This

boyakko [2]

$1.40 - price from a supplier = 100%
100% + 80% = 180% = 1,8 - the retail price

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2,52 * 0,75 = $1,89 - the sale price.

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3 years ago

Joaquin has a grade of 81 and 70 on her first two algebra test if she wants an average of 73 what possible score can she get on

Anvisha [2.4K]

81 + 70 + x = 3(73)
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subtract 151 from both sides

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Joaquin needs to score a 68 on her next test to maintain an average of 73.

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2 years ago

Use one or more properties to rewrite the expression as an equivalent expression that does not use parenthesis. (5+10p)+13. A. 2

bulgar [2K]

It will be D. because you have to add the like terms which is 13 + 5 which will be 18 and so 10p doesn't have no like terms it just stays the same so it will be 10p+18

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3 years ago

g A visit to a hospital emergency room for something as simple as a sore throat could have a mean cost of $328. Assume that this

Rasek [7]

Answer:

The cut-off dollar amount is $328.

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 cost of $328, standard deviation of $82.

This means that $\mu = 328, \sigma = 82$