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Vadim26 [7]
4 years ago
7

Suppose M is the midpoint of segment CD, CM = 5x-12 and MD = 2x + 9. What is x?​

Mathematics
1 answer:
olasank [31]4 years ago
8 0

Answer:

use this https://www.calculatorsoup.com/

Step-by-step explanation:

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xeze [42]

Answer:

The Himalayas are still rising by more than 1 cm per year as India continues to move northwards into Asia, which explains the occurrence of shallow focus earthquakes in the region today. However the forces of weathering and erosion are lowering the Himalayas at about the same rate.

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3 years ago
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A researcher wished to compare the effect of two stepping heights (low and high) on heart rate in a step-aerobics workout. A col
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Answer:

The answer is "between 0.10 and 0.05".

Step-by-step explanation:

For sample 1:

n_1 = 25\\\\\bar{x_1} = 90.00\\\\ s_1 = 9\\\\

For sample 2:

n_2 = 25\\\\ \bar{x_2} = 95.08\\\\ S_2 = 12\\\\

Calculating the null and alternative hypotheses:

H_O : \mu_1 = \mu_2 \\\\ H_Q : \mu_1  

Calculating the test statistic:

Z= \frac{90-95.08}{ \sqrt{\frac{9^2}{25}+\frac{12^2}{25}}} \\\\ =\frac{-5.08}{ \sqrt{\frac{81}{25}+\frac{144}{25}}}\\\\=\frac{-5.08}{ \sqrt{\frac{81+144}{25}}}\\\\=\frac{-5.08}{ \sqrt{\frac{225}{25}}}\\\\=\frac{-5.08}{ \frac{15}{5}}\\\\=\frac{-5.08}{3}\\\\= -1.693

Calculating the conservative degrees of freedom:

DF = min (n_1 -1, n_2 - 1) = min(25-1, 25-1) = 24

by using Excel the p-value for left tailed test and for test statistic will be -1.693 with DF = 24.

\to p-value = TDIST(1.693, 24, 1) = 0.0517\ \ \ \  i.e, \bold{0.05 < p-value < 0.10}

5 0
3 years ago
2x+4 what is the value for x
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Answer:

x = -2

Step-by-step explanation:

2x + 4 = 0

2x = -4

2x/2 = -4/2

x = -2

3 0
3 years ago
3x0.2 help please<br><br><br><br>s.w​
Ilya [14]

Answer:

Step-by-step explanation:

answer 0.6 multiply 3 by 0.2 and you get 0.6! thats what i understood sorry if im rong

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3 years ago
If the sum of the measures of the interior angles of a convex polygon is 2160°, how many sides does the polygon have?
olya-2409 [2.1K]
Remember your formula is 180(n-2) where n=number of sides. So start out by dividing by 180, then add 2 to get the sides.
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3 years ago
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