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2 years ago

14

At a high school, 9th and 10th graders were asked whether they would prefer robotics or art as an elective. The results are show

n in the relative frequency table.
To the nearest percent, what percentage of 10th graders surveyed preferred robotics?

1 answer:

Anna35 [415]2 years ago

6 0

Answer:

30%

Step-by-step explanation:

If 0.46 = 100%

What about 0.14 = ?

(0.14 x 100) ÷ 0.46

14 ÷ 0.46

= 30.43%

= 30 %

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A sports club needs to raise at least $500 by selling chocolate bars for $2.50 each. Sebastian wants to know how many chocolate

mario62 [17]

Answer:

The inequality should be written as $2.50 times c is greater than or equal to c.

Step-by-step explanation:

First, identify what you know:

1) Each chocolate bar is $2.50

2) Sebastian needs to raise at least $500

So, Sebastian needs to sell at least enough chocolate bars to hit $500. The inequality cannot be written as less than or equal to, because he can't sell less than the number of chocolate bars needed to make $500.

Automatically, I can calculate the minimum number of bars he'll need to sell.

500/2.50 = 200 chocolate bars minimum

c must equal greater than or equal to $500, for Sebastian to raise enough money! So, basically Sebastian has to sell 200 bars OR more.

Hope this helps! :)

4 0

2 years ago

Read 2 more answers

Ms stewart teaches three science classes her students are freshmen and sophomores. her student data are shown in the relative fr

viktelen [127]

Answer:

B) 25% of her students are in chemistry.

Step-by-step explanation:

There were 0.1, or 10%, of freshmen in chemistry. There were 0.25, or 25%, of sophomores in chemistry. This is a total of 0.1+0.25 = 0.35, or 35%.

This is not 25%.

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2 years ago

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The students in the service club are mixing paint to make a mural. The table below shows the different parts of paint that the s

Novay_Z [31]

There are really only two different shades of what I think is pink.

1/3 is equal to 2/6 which is equal to 3/9

1/2 is equal to 2/4 which is equal to 4/8

The bolded ones are the original mixtures given.

Start with 1/3 Multiply top and bottom by 2 and you get 2/6

When you multiply top and bottom of 1/3 by by 3 you get 3/9

Use the same idea for 1/2

6 0

2 years ago

There are 5 Snickers, 10 Baby Ruths, 13 Milky Ways, 12 Twixs and17 Almond Joys in a bowl of candy. You reach into the bowl and r

agasfer [191]

Answer: 0.2415

Step-by-step explanation:

Given : There are 5 Snickers, 10 Baby Ruths, 13 Milky Ways, 12 Twixs and17 Almond Joys in a bowl of candy.

Total candy bars : $5+10+13+12+17=57$

Probability of getting a Milky Way bar= $p=\dfrac{\text{No. of Milky bars}}{\text{Total candy bars}}$

$\Rightarrrow\ p=\dfrac{13}{57}\approx0.23$

Using Binomial distribution , the probability of getting success in x trials is given by:-

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where p uis probability of success in each trial and n is sample size.

If you randomly select n= 5 candy bars, then the probability you select exactly 2 Milky Way bars Will be :_

$P(2)=^5C_2(0.23)^2(1-0.23)^{3}\\\\=\dfrac{5!}{2!(5-2)!}(0.23)^2(0.77)^3\\\\=0.241505957\approx0.2415$

Hence, the probability you select exactly 2 Milky Way bars = 0.2415

8 0

2 years ago

A firm decides to give 20% extra free in their packets of soap powder. How much extra soap powder would be given away free with

zvonat [6]

Answer:

0.24 kg

Step-by-step explanation:

Remember that

$20\%=20/100=0.20$

To find out how much extra soap powder will be given away with the package, multiply the original weight by the percentage in decimal form.

so

$1.2(0.20)=0.24\ kg$

4 0

2 years ago