Answer:
12 units
Step-by-step explanation:
Each side of the triangle is 1 unit. When putting 10 triangles together in figure 10, there will be 12 sides on the perimeter. Therefore, your answer is 12 units.
Answer:
Df=[-7,∞)
Step-by-step explanation:
Well
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4 x 5 = 20
and
5 x 5 = 25
I'm sure a calculator could help you out with this, But if you don't have access to a calculator I'll show you how to multiply. It's just like adding, Let's use 6 x 7 for example. Take the first number ( Which is 6 in this case ) and look at the second number ( Which would be 7 ) The second number represents how many times you would add the first number together. So:
6 + 6 + 6 + 6 + 6 + 6 + 6 = 42 ( We add 6 together 7 times )
So
6 x 7 = 42
There are faster methods but this is probably the best way to start out.
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Answer: Found it by web and solving
Step-by-step explanation: L = W + 4
LW = 60
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LW = 60
(W + 4)W = 60
W^2 + 4W + (-60) = 0
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above is in quadratic equation form: ax^2 + bx + c = 0
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use the quadratic formula to solve for two solutions:
x = ( -b +- sqrt( bb - 4ac ) ) / 2a
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the two solutions are:
W = 6
W = -10
the negative solution doesn't make sense for length, so use the positive solution.
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L = 10
W = 6
Answer:
b. 3 1/4
Step-by-step explanation:
