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strojnjashka [21]
2 years ago
9

Selected value of each decimel number when it is rounded to the nearest whole number ​

Mathematics
1 answer:
PtichkaEL [24]2 years ago
6 0

Answer:

  1. 5
  2. 6
  3. 6
  4. 5

Remember the decimal <em>hundredths</em> rounding ruleset.

  • If a decimal is below .50, round down.
  • If a decimal is .50, round up.
  • If a decimal is above .50, round up.

View this array below to get a better image.

\left[\begin{array}{ccc}0.49(down)&0.50(up)&0.51(up)\end{array}\right]

So, for example, if you had 6.51, you would round that up to 7, and if you had 8.47, you would round that to 8

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The expression m÷4 is the distance each person runs in a relay race that is m miles. How far does each person run in a relay rac
inna [77]

Answer:

5

Step-by-step explanation:

Replace 20 instead of m

20/4=5

5 0
3 years ago
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A psychological experiment was conducted to investigate the length of time (time delay) between the administration of a stimulus
aleksklad [387]

Answer:

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

The significance level for this test is 0.05.

Step-by-step explanation:

In this case, we want to prove if there is significant evidence that the mean differs from 1.6 seconds. That is the same as having evidence to reject the the hypothesis H_0:\mu= 1.6 (the null hypothesis always have the equal sign).

We have to test the null hypothesis

H_0:\mu= 1.6

The significance level for this test is 0.05

Calculation of the t-statistic:

t=\frac{M-\mu}{s/\sqrt{n}} =\frac{2.2-1.6}{0.57/\sqrt{36}} =\frac{0.6}{0.063}= 9.47

If we look up in a t-table for t=9.47 and df=(36-1)=35, we get this value appears with a probability of zero. A large number like that is very unlikely to happen.

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

6 0
2 years ago
2n &gt; -20<br><br><br> Please help <br><br> N=?
Wewaii [24]

Answer:

The value of x>-10

Step-by-step explanation:

The interval notation if you need it is (-10,♾)

3 0
3 years ago
Read 2 more answers
Just the 3rd and 4th plz help me
Mademuasel [1]

Answer:

3. 122.025

4. 469.2

Step-by-step explanation:

16.27/2 =8.135

8.135*15= 122.025


11.73 divided by 1/2= 23.46

23.46*20=469.2

6 0
3 years ago
A.Directions: Solve the system of equations by substitution and elimnination. Check your solutions.
Daniel [21]

Answer:

I had done already.thanks for huge point and heart.

7 0
3 years ago
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