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3 years ago

What is the final amount if 1102 is increased by 2% followed by a further 1% increase? Give your answer rounded to 2 DP.

1 answer:

6 0

To increase by 2% you multiply to get 1102*0.02=22.04. You then add that to 1102, getting 1124.04. To then decrease it by 1% you multiply to get 1124.04*0.01=11.24. Subtract 11.24 from 1124.04 to get a final answer of 1112.8

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3 years ago

OAB is a sector of a circle <br>what is the area of the sector

oee [108]

Answer:

12.56 square cm

Step-by-step explanation:

$Central \:angle \:(\theta) = 40°\\Radius \: (r) = 6 cm$

Let A be the area of the sector of circle.

$\therefore \: A = \frac{\theta }{360 \degree} \times \pi {r}^{2} \\ \\= \frac{ 40 \degree}{360 \degree} \times 3.14\times {6}^{2} \\ \\ = \frac{ 1}{9} \times 3.14 \times 36 \\ \\ = 3.14 \times 4 \\ \\ = 12.56 \: {cm}^{2}$

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3 years ago

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At a store, Susan selected a pumpkin that weighed 35.2 ounces. • Pumpkins cost $1.80 per pound. • There are 16 ounces in 1 pound

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The pumpkin cost $3.96

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3 years ago

Julie spends $ 5.62 at the store. Micah spends 5 times as much as Julie. Jeremy spends $6.72 more than Micah . How much does eac

Varvara68 [4.7K]

Answer:

Julie = $5.62 Micah = $28.10 Jeremy = $34.82

Step-by-step explanation:

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3 years ago

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João claims he can read minds. His friend Pedro asked him to guess a number he was thinking of between 1 and 7 (inclusive). João

Ksju [112]

It can be deduced that the probability of having 4 or more correct guesses will be 0.0296.

<h3>How to calculate the probability</h3>

From the given information, the null hypothesis is p = 1/7 and the alternate hypothesis is p>1/7. In this case, the mind reader gets a 4 out of 9 chances.

In order to test the hypothesis, simulations for 10000 cases were run with a probability of the correct answer being 1/7.

In this case, the p-value is the probability of correct answers that are greater than 4, assuming the null hypothesis is true. Here the p-value is 0.0296.

Also, the significance level to reject the hypothesis is less than 0.01. Since p > 0.01, we then fail to reject the hypothesis. Therefore the null hypothesis stands and Joao is not a mind reader.

Learn more about probability on:

brainly.com/question/24756209

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2 years ago