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Margarita [4]
3 years ago
9

Determine a rational number that is located between -2 1/4 and -2.8

Mathematics
2 answers:
makvit [3.9K]3 years ago
8 0

Answer:

7

Step-by-step explanation:

Marina CMI [18]3 years ago
4 0

Answer:

Step-wwwkwnwby-step explanation:

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a bread recipe calls for ⅓ cup of butter you want to make ½ of a batch. how much butter do you need?​
Reil [10]

Answer:

1/6

Step-by-step explanation:

if 1/3 is for a whole batch and you want to make a half batch. So, divide 1/3 by 2.

4 0
3 years ago
The distance from the ground of a person riding on a Ferris wheel can be modeled by the equation d equals 20 times the sine of t
kodGreya [7K]

We have the function d, representing the distance from the ground of a person riding on a Ferris wheel:

d(t)=20\sin (\frac{\pi}{30}t)+10

If we consider the position of the person at t = 0, which is:

d(0)=20\sin (\frac{\pi}{30}\cdot0)+10=20\cdot0+10=10

This position, for t = 0, will be the same position as when the argument of the sine function is equal to 2π, which is equivalent to one cycle of the wheel. Then, we can find the value of t:

\begin{gathered} \sin (\frac{\pi}{30}t)=\sin (2\pi) \\ \frac{\pi}{30}\cdot t=2\pi \\ t=2\pi\cdot\frac{30}{\pi} \\ t=60 \end{gathered}

Then, the wheel will repeat its position after t = 60 seconds.

Answer: 60 seconds.

7 0
1 year ago
A newspaper found that, on average, 7.6% of people stay overnight in the hospital with a 1.5% margin of error. Construct a 95% c
tensa zangetsu [6.8K]
Given:
p = 7.6% = 0.076, the percentage of people who stay overnight at the hospital.
E = 1.5% = 0.015, margin of error
95% confidence interval.

The standard error is 
Es = \sqrt{ \frac{p(1-p)}{n} }
where 
n =  the sample size.

The margin of error is
E=z^{*}E_{s}
where
z* = 1.96 at the 95% confidence level.

Because the margin of error is given, there is no need to calculate it.
The 95% confidence interval is
p +/- E = 0.076 +/- 0.015 = (0.061, 0.091) = (6.1%, 9.1%)

Answer: 
The 95% confidence interval is between 6.1% and 9.1%.

3 0
3 years ago
Charlie's bag contains 4 blue pens and 3 red pens. He pulls out a pen at random, replaces it in the bag, and then pulls out a se
pickupchik [31]
50 50 because there is 3 blue pens and 3 red plans after the 4th blue one was taken out
Mark brainliest
5 0
3 years ago
What integer is 15 less than -35?
Alex17521 [72]

Answer: The integer 15 less than -35 is -50

Step-by-step explanation:

4 0
3 years ago
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