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3 years ago

What is 49% of 15? Is it 1.5,4,7.5,or 9?

Mathematics

1 answer:

Semmy [17]3 years ago

4 0

$49\% \ of \ 15 \\ \\ \frac{49}{100} \cdot15= \frac{735}{100}=\boxed{\boxed{7.5 }}$

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21/24 reduced fraction

svetoff [14.1K]

21/24
Divide 21 by 3. You get 7.
Divide 24 by 3. You get 8.
7/8 is your answer

6 0

3 years ago

Read 2 more answers

g In 2013, the Pew Research Foundation reported that 43% of U.S. adults report that they live with one or more chronic condition

SOVA2 [1]

Answer:

We are 95% confident that the true proportion of U.S. adults who live with one or more chronic conditions is between 39.7% and 46.33%

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 43\% = 0.43$

The standard error is $SE = 0.017$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100-95)\%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * SE$

=> $E = 1.96 * 0.017$

=> $E = 0.03332$

Generally 95% confidence interval is mathematically represented as

$\r p -E < p < \r p +E$

=> $0.43 -0.03332 < p < 0.43 + 0.03332$

=> $0.39668 < p < 0.46332$

Converting to percentage

$(0.39668 * 100)< p < (0.46332*100)$

$39.7\% < p < 46.33 \%$

7 0

3 years ago

I need help with this please

Lelechka [254]

There are 36 possible combinations that can occur when 2 dice are rolled. For the sake of this question, we'll count instances where dice 1 = 3/dice 2 = 2 and dice 1 = 2/dice 2 = 3.

Now, let's think about all of the possible ways a total of 5 could be rolled.

1 + 4

2 + 3

3 + 2

4 + 1

That's 4 possibilities to roll a total of 5 out of 36 possible outcomes.

4 / 36 = ? / 180

---Now, we need to use a proportion in order to figure out the possibilities out of 180.

36x = 720

x = 20

If you rolled a pair of fair dice 180 times, you would expect to roll a total of 5, 20 times.

Hope this helps!

4 0

2 years ago

1. Find the vertex, focus, directrix, and focal width of the parabola x^2 = 12y (1 point)

Finger [1]

Answer:

I think its B!

Step-by-step explanation:

What grade r u in??

3 0

2 years ago

Read 2 more answers

Carlos and Maria drove a total of 228 miles in 4.6 hours. Carlos drove the first part of the trip and averaged

aleksklad [387]

Answer:

around 228

Step-by-step explanation:

8 0

3 years ago