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taurus [48]
3 years ago
12

X - 2y = 1 and y = -1. Find (4^x)^y.

Mathematics
1 answer:
raketka [301]3 years ago
8 0

Answer:

4

Step-by-step explanation:

x - 2y = 1\\\\\implies x=1+2y

If y=-1

\implies x=1+2(-1)=-1

(4^x)^y=(4^{-1})^{-1}=4^1=4

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Swimming pools must have a certain amount of chlorine content. The United States standard for safe levels of chlorine in swimmin
Brrunno [24]

Answer:

1 ≤ c ≤ 3

Step-by-step explanation:

In order to meet the standard, the chlorine level (c) must be at least 1 part per million (equal to or greater than 1):

1 ≤ c

At the same time, the level also needs to be no greater than 3 parts per million (equal to or lesser than 3)

c ≤ 3

Combining both inequalities yields (in parts per million):

1 ≤ c ≤ 3.

The compound inequality above describes the acceptable range for chlorine levels.

5 0
4 years ago
Convert 74.8% to a fraction in simplest form and a decimal.
san4es73 [151]

Answer:

decimal; 0.748 fraction is: 374/5 or 74 4/5 .

7 0
2 years ago
An investment counselor calls with a hot stock tip. he believes that if the economy remains​ strong, the investment will result
anzhelika [568]

Answer: $ 16,000 profit

Step-by-step explanation:

Given the following :

Profit when economy is strong = 50,000

Profit when economy is moderate = 10,000

Loss when economy goes into recession = 50000

Resulting probabilities of the three probable occurrences are:

Probability of strong economy; p(strong) = 30/100 = 0.3

Probability of moderate; P(moderate) = 60/100 = 0.6

Probability of recession; P(recession) = 10/100 = 0.1

Expected profit :

Summation of the product of each probability and its accompanying profit or loss.

P(strong) × profit of strong = 0.3 × 50000 = 15000

P(moderate) × profit of moderate = 0.6 × 10000 = 6000

P(recession) × loss on recession = 0.1 × 50000 = 5000 = - 5000 ( loss)

Expected profit :

$(15,000 + 6000 - 5000) = $16,000 profit

5 0
3 years ago
Clara estimates that the length of a hiking trail is 5.75 km. She later learns that its actual length is 6.25 km. What is the pe
antoniya [11.8K]
8.0% is the answer. To solve these problems just do actual length minus her guess which gives you 0.5. Then divide what you got by the actual length. 0.5 divided by 6.25 is 0.08. Multiply that by 100. 0.08 x 100 is 8 which means the answer is 8.0% :)
5 0
3 years ago
Daniel owns a synall business selling used books. He knows that in the last week 60
zzz [600]

The probability that the next customer that comes into Daniel's business will pay with a credit card is 23 / 87.

<h3>What is the probability?</h3>

Probability determines how likely it is that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The probability that the next customer will pay with a credit card = number of people who paid with a credit card / total number of customers

23 / (23 + 60 + 4)

23 / 87

To learn more about probability, please check: brainly.com/question/13234031

5 0
2 years ago
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