Can 5/9 be simplified
2 answers:
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Answer:
The answers are A , C , D
Step-by-step explanation:
Lets revise the rule of exponent
*
*
*
*
Now lets solve the problem
We need all the expressions equivalent to
A.
∵
∵ 2³ = 8
∴
Answer A is equivalent to
B.
∵ 2³ = 8
Answer B is not equivalent to
C.
∵ 2³ = 8
∴
Answer C is equivalent to
D.
∵
∵
Answer D is equivalent to
E.
∵
∵ 2³ = 8
Answer E is not equivalent to
<em>The answers are A , C , D</em>
Answer:
r = - 2
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to
m =
with (x₁, y₁ ) = (- 9, - 3) and (x₂, y₂ ) = (- 2, r)
m = , that is
=
( cross- multiply )
7(r + 3) = 7 ( divide both sides by 7 )
r + 3 = 1 ( subtract 3 from both sides )
r = - 2