How would i simplify this expression -3(b-7). can some one please help
2 answers:
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<span>Question
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-3(b-7)
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multiply the -3 to every of the terms inside the bracket
</span>------------------------------------------------------------------------<span>
= -3(b) -3(-7)
= -3b + 21 </span>
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Answer: -3b + 21
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</span>
<span>Question
</span>------------------------------------------------------------------------<span>
-3(b-7)
------------------------------------------------------------------------
multiply the -3 to every of the terms inside the bracket
</span>------------------------------------------------------------------------<span>
= -3(b) -3(-7)
= -3b + 21 </span>
------------------------------------------------------------------------
Answer: -3b + 21
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</span>
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Answer: They are not perpendicular because their slopes are not negative reciprocals.
Step-by-step explanation:
For these two lines to be perpendicular, their slopes have to be negative reciprocals.
Slope of FG.
F = (-4, 1)
G = (0, -2)
= (Y₂ - Y₁) / (X₂ - X₁)
= (-2 - 1) / (0 + 4)
= -3/4
Slope of HJ
J = (0 , 4)
H = (-4, -2)
Slope = (Y₂ - Y₁) / (X₂ - X₁)
= (-2 - 4) / (-4 -0)
= 6/4
= 3/2
<em>The slopes of these lines are not negative reciprocals so these lines are not perpendicular. </em>
