Answer:
(m+2) (4n+3)
Step-by-step explanation:
4mn+3m+8n+6
4mn +8n +3m +6
Factor a 4n from the first term and a 3 from the second
4n (m+2) +3(m+2)
Factor out an (m+2)
(m+2) (4n+3)
Answer:
28
Step-by-step explanation:
Calcule a area comple
10*4=40
6*2=12
40-12=28
subtraia o recorte
Did you figure it out? This assignment is Quite easy.
It's about .83333. You divide 4/15 first and then 8/25. then you divide both after that
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
