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luda_lava [24]
4 years ago
15

Which one is greater 100dm or 100km

Mathematics
1 answer:
Snezhnost [94]4 years ago
6 0
100 dm is greater than 100 km.
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Which expression is equivalent to −1.3+(−4.9)+(−2.6) ?
Nesterboy [21]

Answer:

Step-by-step explanation:

−1.3 (4.9 2.6)

Is the answer!ihope this helps you :)

3 0
4 years ago
A researcher compares the effectiveness of two different instructional methods for teaching physiology. A sample of 178 students
xxTIMURxx [149]

Answer:

critical value = 1.645

The 90% confidence interval = ( -22.62, -17.58)

Step-by-step explanation:

Given that:

the sample  size n_1 = 178

the sample size n_2 = 226

the sample mean \overline x_1 = 54.4

the sample mean \overline x_2 = 74.5

population standard deviation \sigma_1 = 18.58

population standard deviation \sigma_2 = 9.52

level of significance ∝ = 1 - 0.90 = 0.10

The critical value for Z_{\alpha/2} = Z _{0.10/2} = Z_{0.005} is 1.645

For the construction of our confidence interval, we use 90% since that is used to find the critical value.

∴

The margin of error = Z \times\sqrt{\dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_2^2}{n_2}}

1.645 \times\sqrt{\dfrac{18.58^2}{178} + \dfrac{9.52^2}{226}}

1.645 \times\sqrt{\dfrac{345.2164}{178} + \dfrac{90.6304}{226}}

1.645 \times\sqrt{2.34042}

\simeq 2.52

The lower limit = ( \overline x_1 - \overline x_2) - (M.O.E)

= ( 54.4-74.5) - (2.52)

= -20.1 - 2.52

= -22.62

The upper limit = ( \overline x_1 - \overline x_2) + (M.O.E)

= ( 54.4-74.5) + (2.52)

= -20.1 + 2.52

= -17.58

The 90% confidence interval = ( -22.62, -17.58)

6 0
3 years ago
Caseys took 25 tests in 135 days at this rate in how many days will she take another 10 test
Butoxors [25]
It will take her 54 days to take 10 more tests
6 0
3 years ago
Can you construct a triangle that has side lengths 2 yd, 9 yd, and 10 yd?
yan [13]

Yes


The rule to check if a triplet of numbers can represent the sides of a triangle is the following: the sum of the length of two sides must exceed the third one.


This happens for all possible couples in your case:


2+9=11>10


2+10=12>9


9+10=19>2

3 0
3 years ago
For each sequence, find the first 4 terms and the 10th term.<br> b) 5 - 2n
GREYUIT [131]

Answer:

first 4 terms: 3,1,-1,-3

10th: -35

Step-by-step explanation:

<u><em>Please mark as brainliest if answer right </em></u>

Have a great day, be safe and healthy  

Thank u  

XD

7 0
3 years ago
Read 2 more answers
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