Hello from MrBillDoesMath!
Answer: 8a
Discussion
:
Let's study the expression:
2(5a - 4a) + 6a
The boldfaced term simplifies to "a" as 5 = 4 = 1. So the expression becomes
2a + 6a
As 2 + 6 = 8, 2a + 6a = 8a.
Regards, MrB
Answer:
length: 13 cm
width: 5 cm
Step-by-step explanation:
You may be aware that 65 = 5×13. We note that 13 is 3 more than twice 5, so these are the dimensions of the rectangle:
5 cm wide; 13 cm long
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If you want so solve this algebraically, you can let w represent the width. Then the length is 2w+3 and the area is ...
A = LW
65 = (2w+3)(w)
In standard form, this equation is ...
2w^2 +3w -65 = 0
To factor this, you look for factors of 2×(-65) = -130 that have a sum of 3. Those would be ...
-130 = (-10)(13)
Then the factored equation is ...
2w^2 +13w -10w -65 = 0
w(2w+13) -5(2w+13) = 0
(w -5)(2w +13) = 0 ⇒ w = 5, -13/2
The positive solution makes sense in this problem, so ...
width = 5 cm
length = 2(5) +3 = 13 cm
Answer:
i dont understand the question
Step-by-step explanation:
Y = -(2^3) = -8 (substitute x=3)
Answer:
79
Step-by-step explanation:
see which ones are vertical to each other and since they are vertical to each other they are the same degree then and all of the numbers you already have and the answer from that subtract it from 360 and them divide it by 2 .
64+64=128
37+37=74
128+74=202
360-202=158
158÷2=79
