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ehidna [41]
3 years ago
13

Find the mean for the given set of data.

Mathematics
1 answer:
KIM [24]3 years ago
6 0
A) should be ur answer
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lukranit [14]

Answer:

a=1 because 3x means 3 multiply 2 and it is substracted from 7 and 7-6 is 1

b=3

c=9

Step-by-step explanation:

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9.<br> Which of these is equal to {2 - 31}{21 +4}?
densk [106]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Help me solve (b) in this quadrilateral
Savatey [412]

Answer:

b = 87°

Step-by-step explanation:

In order to answer this question, we need to utilise an important angle fact which is <em>angles in a quadrilateral add up to 360° </em>

Using the information we can set up an equation to find the value of b

→ Form equation

63 + 140 + 70 + b = 360

→ Simplify

273 + b = 360

→ Minus 273 from both sides isolate b

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3 0
3 years ago
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inna [77]
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7 0
3 years ago
The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1.
Anna [14]

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The difference of the two means is not significant, so the null hypothesis must be rejected.


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3 years ago
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