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3 years ago

Can somebody plz answer these 3 questions correct!!! Help (WILL MARK BRAINLIEST

Mathematics

2 answers:

Marianna [84]3 years ago

6 0

6, 9, then 18. Just add 3 every time because it is asking how much it increases. For the first one you multiply it by 2 (2h) which got 6, for the second you multiply it by 3 (3h), and for the last one you multiply it by 6 (6h) which got 18.

LiRa [457]3 years ago

5 0

<em>it increases 3° each hour</em>

3*2= 6

6° after 2 hours

3*3= 9

9° after 3 hours

3*6= 18

18° after 6 hours

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3 years ago

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See attachment

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2 years ago

From the records of a health-insurance companies in Pennsylvania, it is known that 58% of the accounts include dental coverage.

kobusy [5.1K]

Answer: 0.0221

Step-by-step explanation:

We know that the formula to find the standard deviation of the sample proportion is :

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}$

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p=0.58

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Then, the standard deviation of the sample proportion in this situation would be :

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8 0

3 years ago

By selling a chair for Rs. 1440 a shopkeeper loses 10%.At what price did he buy it?

Dvinal [7]

Selling price of the chair = 1440 rupees
Percentage of loss made by the shopkeeper = 10%
Let us assume the price at which the shopkeeper bought the chair = x
Then
90% * x = 1440 rupees
(90/100) * x = 1440 rupees
9x/10 = 1440 rupees
9x = 1440 * 10 rupees
9x = 14400 rupees
x = 14400/9 rupees
= 1600 rupees
So the price at which the shopkeeper bought the chair was 1600 rupees. I hope the procedure is clear enough for you to inderstand.

5 0

3 years ago

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