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Temka [501]
3 years ago
7

What is the value of a in the equation 0.75 (a - 2) = 5.25

Mathematics
2 answers:
irga5000 [103]3 years ago
6 0
X=9 mark as brainlest if this helps ;)
Rzqust [24]3 years ago
6 0

Answer:

a must be 9

Step-by-step explanation:

Divide both sides of the given equation by 0.75, to isolate (a - 2):

a - 2 = 5.25/0.75 = 7

Then a - 2 = 7, and so a must be 9.

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Answer:

4th row will result in the greatest mean.

Step-by-step explanation:

We are asked to find the row with greatest mean from our given rows.

We will use formula \bar{x}=\frac{\Sigma x}{n}, where,

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Let us find mean of each row using above formula.

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Therefore, mean of 1st row is 2.8.

\text{Mean of row 2}=\frac{3+3+4+3+2}{5}

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\text{Mean of row 3}=3.2

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Therefore, mean of 4th row is 4.2.

Since 4th row has the highest mean, therefore, 4th row will result in the greatest mean.

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