Answer: you square root it.
5r^2/5 = 80/5 =16
Sqr root of r^2=Sqr root of 16
r=4
Step-by-step explanation:
Answer: The height of a triangle is the perpendicular segment that joins the base with its opposite vertex.
Step-by-step explanation:
The base can be any side of the triangle.
Thee answer is 25. 25 is a square number as it is 5 times 5. The sum of the digits 2+5 is 7.
What you can put is an obtuse 108 degrees
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The answer can be readily calculated using a single variable, x:
Let x = the amount being invested at an annual rate of 10%
Let (8000 - x) = the amount being invested at an annual rate of 12%
The problem is then stated as:
(x * 0.10) + ((8000 - x) * 0.12) = 900
0.10(x) + ((8000 * 0.12) - 0.12(x)) = 900
0.10(x) + 960 - 0.12(x) = 900
0.10(x) - 0.12(x) = 900 - 960
-0.02(x) = -60
-0.02(x) * -100/2 = -60 * -100/2
x = 6000 / 2
x = 3000
Thus, $3,000 is invested at 10% = $300 annually; and $8,000 - $3,000 = $5,000 invested at 12% = $600 annually, which sum to $900 annual investment.