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2 years ago

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A new health drink has 130% of the recommended daily allowance (RDA) for a certain vitamin. The RDA for this vitamin is 30 mg. H

ow many milligrams of the vitamin are in the drink?

1 answer:

dsp732 years ago

7 0

Answer:

39 mg

Step-by-step explanation:

To get the number of milligrams, all we have to do is to find 130% of the RDA

mathematically, we have this as;

130% of 30

= 130/100 * 30 = 39 mg

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Consider the hypothetical study described below. Based solely on the information given, do you have reason to question the resu

elena-14-01-66 [18.8K]

Answer:

(B) Yes, there is reason. The TV audience might not be representative of the population.

(E) Yes, there is reason. Call-in polls tend to be biased.

Step-by-step explanation:

According to the information given we might consider two answers.

The first answer is:

<em>(B) Yes, there is reason. The TV audience might not be representative of the population.</em>

Let's remember that for a sample to be representative of a population must be random and every person must have the same probability of being selected. Here, the question is targeted only to the TV show's audience, so the results can only be interpreted for this segment of the population.

<em>(E) Yes, there is reason. Call-in polls tend to be biased.</em>

The risk is that the people who call might be influenced by the show itself and would not give an unbiased answer. This creates a bias on the sample. Besides, as stated before, not all the elements of the population can be part of the sample.

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3 years ago

A breathalyser test is used by police in an area to determine whether a driver has an excess of alcohol in their blood. The devi

Xelga [282]

Answer: 1)The drivers with low alcohol in take from the breathlyser, being above the limit, A = 5/100;

2)The drivers above the alcohol limit, give reading below that level, B = 15/100;

3) The drivers above the alcohol limit that are arrested at radom by police, C = 12/100

Step-by-step explanation: a) A + B + C = 5/100 + 15/100 + 12/100 = 32/100

b) 1 - ( A + B + C) = 1 - 32/100 = 68/100

c) A = 5/100

d) 1 - 5/100 = 95/100

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2 years ago

Travis earned 92 bonus points. Zoe earned b more bonus points than Travis. Write an expression that shows how many bonus points

Serga [27]

92 + b= the amount of points Zoe earned

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3 years ago

Read 2 more answers

What is 65 ÷ 455? because I need help.

eduard

65÷455= 7
Hope this helps!

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2 years ago

Read 2 more answers

Membership to a music club costs $165. Members

dimulka [17.4K]

Answer:

11 music lessons.

Step-by-step explanation:

We know that membership costs $165 and members pay $25 per music lesson.

So, we can write the following expression:

$165+25m$

The 165 represents the one-time membership fee and the 25m represents the cost for m music lessons.

We know that non-members pay no membership fee but their cost per lesson is $40. So:

$40m$

Represents the cost for non-members for m music lessons.

We want to find how many music lessons would have to be taken for the cost to be the same for both members and non-members. So, we can set the expressions equal to each other:

$165+25m=40m$

And solve for m. Let's subtract 25m from both sides:

$165=15m$

Now, divide both sides by 15:

$m=11$

So, at the 11th music lesson, members and non-members will pay the same.

Further Notes:

This means that if a person would only like to take 10 or less lessons, the non-membership is best because there is no initial fee.

However, if a person would like to take 12 or more lessons, than the membership is best because the membership has a lower cost per lesson than the non-membership.

And we're done!

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3 years ago