7x - 5y = 21....(4,?)...so sub in 4 for x and solve for y
7(4) - 5y = 21
28 - 5y = 21
-5y = 21 - 28
-5y = - 7
y = 7/5
check..
7(4) - 5(7/5) = 21
28 - 35/5 = 21
28 - 7 = 21
21 = 21 (correct)
the other coordinate is 7/5......(4,7/5)
Answer:
2(x+3)=2x+6
2x+6=2x+6
Step-by-step explanation:
2(x+3)=2x+6
2x+6=2x+6
The axioms in addition help in developing theorems about multiplication because multiplication, in simple terms, repeated addition.
As an example,
This addition operation
3 + 3 + 3 + 3 = 12
can be expressed as a multiplication operation
3 x 4 = 12
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1,393.85 es la area de la pieza
Answer:
2sqrt(13)
Step-by-step explanation:
x = sqrt(36 + 16)
x = sqrt(52)
x = sqrt(4*13) = 2sqrt(13)
