3 years ago

List 3 ways you can use an answer key effectively

Mathematics

1 answer:

kondaur [170]3 years ago

3 0

practise new problem

check your answers

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Step-by-step explanation:

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3 years ago

Compare two linear relationships below. All of the following are true except

Korvikt [17]

Answer:

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Step-by-step explanation:

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2 years ago

To maintain a 92 percent average, what score does Kari need on her next algebra test if her test scores?

nydimaria [60]

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3 years ago

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I have 2 separate questions i wish to ask. Idk if it's possible, May you show how the problem is solved:

ivann1987 [24]

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3 years ago

PLEASEEEE HELP ME WITH THIS!!

dem82 [27]

Answer:

$x=\boxed {3.5}$

Step-by-step explanation:

Given:

AC = 5

BC = 6

DB = 4.2

∠ACD ≅ ∠BCD

AD = $x$

∵ ∠ACD ≅ ∠BCD

∴ CD is the angle Bisector of ∠ ACB

We know that, from angle bisector theorem that,

The angle bisector of an interior angle of a triangle divides the opposite side in two segments such that the two segments are proportional to the other two sides of the same triangle.

Therefore, the sides that are in proportion are given as:

$\dfrac{AC}{BC} =\dfrac{AD}{DB}$

Substituting the given values we get:

$\dfrac{5}{6} =\dfrac{x}{4.2}\\\\6x=5\times 4.2\\\\6x=21\\\\x=\dfrac{21}{6}=3.5\\\\\therefore x=3.5\ unit$

Therefore, the value of $x$ is 3.5.

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3 years ago