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3 years ago

Simplify the question :(4−5y)−2(3.5y−8)

Mathematics

1 answer:

BabaBlast [244]3 years ago

7 0

Answer:

$-12y+20$

Step-by-step explanation:

$\left(4-5y\right)-2\left(3.5y-8\right)$

Use distributive property.

$-2\left(3.5y-8\right)$

$-2\cdot \:3.5y-\left(-2\right)\cdot \:8$

$-7y+16$

$4-5y-7y+16$

Now, add like terms.

$-5y-7y=-12y$

$\:4+16=20$

$-12y+20$

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Answer:

See Below.

Step-by-step explanation:

Statements: Reasons:

$1)\, XY=XZ$ Given

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$\displaystyle 3) \text{ $m\angle Y=m\angle XYQ + \angle QYZ$}$ Angle Addition

$\displaystyle 4)\text{ $YQ$ bisects $\angle XYZ$}$ Given

$5) \text{ $m\angle XYQ=m\angle QYZ$}$ Definition of Bisector

$\displaystyle 6)\text{ $m\angle Y=2m\angle QYZ$}$ Substitution

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$\displaystyle 9) \text{ $m\angle XZP=m\angle PZY$ }$ Definition of Bisector

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$12)\text{ }m\angle QYZ=m\angle PZY$ Division Property of Equality

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*For clarification:

∠Y = ∠Z

YZ = YZ (or ZY)

∠PZY = ∠QYZ

So, Angle-Side-Angle Congruence:

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Answer:

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Step-by-step explanation:

Dependent variables are those variables that are under study, i.e. they are being observed for any changes when the other variables in the model are changed.

The dependent variables are also known as response variables.

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