Multiply the radical to make a radical 18. turn the radical 18 into radical 9 and 2. the radical 9 would equal 3. 4x3radical 2. or 12 radical 2
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Define x :
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Let one of the number be x. The other number is x + 2.
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Construction Equation :
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The sum of the square of the two number is 202.
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Solve for x :
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x = -11 is rejected, since it only want positive integer.
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Find the two numbers :
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x = 9.
x + 3 = 11
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Answer: The numbers are 9 and 11.----------------------------------------------------------
Answer:
<em>(2, - 6, 3)</em><em> </em>
Step-by-step explanation:
2x - y - 3z = 1 ⇒ y = 2x - 3z - 1 .... <em>(1)</em>
4x + 3y + 2z = - 4 .... <em>(2)</em>
- 3x + 2y + 5z = - 3 .... <em>(3)</em>
(1) ---> (2) and (3)
4x + 3(2x - 3z - 1) + 2z = - 4 ⇔ 10x - 7z = - 1 ... <em>(4)</em>
- 3x + 2(2x - 3z - 1) + 5z = - 3 ⇔ x - z = - 1 ⇒ x = z - 1 ---> (4)
10(z - 1) - 7z = - 1 ⇒ <u><em>z = 3</em></u>
<u><em>x = 2</em></u>
2(2) - y - 3(3) = 1 ⇒ <u><em>y = - 6</em></u>
<em>(2, - 6, 3)</em>
Answer:
a=4 m/s^2
Step-by-step explanation:
F=ma
a=F/m
a=800/200
a=4 m/s^2
Answer:
609
Step-by-step explanation:
Standard deviation = = $30
Margin of error = E = $2
Confidence level = 90%
Since the distribution is said to be normal, we will use z scores to solve this problem.
The z score for 90% confidence level = z = 1.645
Sample size= n = ?
The formula to calculate the margin of error is:
Using the values in above equation, we get:
This means, the minimum number of observations required is 609