Answer:
<h2>A = 145 cm</h2><h2 />
Step-by-step explanation:
total length = 445 cm (A + B + C)
A = 45 + B
B = C/2
find A
A + B + C = AC
(45 + B) + (C/2) + C = 445
45 + C/2 + C/2 + C = 445
2C = 445 - 45
C = 400/2
C = 200
B = 200/2
B = 100
A = 45 + 100
A = 145
proof:
445 = 145 + 100 + 200
445 = 445 ----OK
First, you’d look at what can multiply together to make 20. You can multiply 10x2, 1x20, or 4x5 (or change them so each number is a negative) to make a positive 20. You then must look at which one of these can be added or subtracted together to create -9. Negative 4 and 5 can be subtracted to make -9, so you would factor them out, as well as the x^2, and get the answer (x-4)(x-5).
Answer: (x-4)(x-5)
128 = 2^7 = 2*(2^3)^2
sqrt(128) = sqrt(2*(2^3)^2) = 2^3*sqrt(2)
Answer:
Step-by-step explanation:
2/16
4/14
20/18
1 gal to 7 qt
17 in to 2 ft
2 min to 45 seconds
yes
no
yes
Answer:
Obtuse
Step-by-step explanation:
Due to the triangle sum theorem, the other angle will be 100. Only one angle has to be obtuse in order for it to be an obtuse triangle
