3 years ago

PLS HELP 15 POINTS

Mathematics

1 answer:

Semmy [17]3 years ago

4 0

Answer:

2√21

Step-by-step explanation:

Diagonal =√(L²+W²+H²)

Diagonal =√(8²+4²+2²)=√(64+16+4)=√84=2√21

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What is the answer to (13x+30)-(20x+6)

AlekseyPX

Answer:

-7x + 24

Explanation:

(13x + 30) - (20x + 6)

13x + 30 - 20x - 6

-7x + 30 - 6

-7x + 24

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Refer to the attachment

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Step-by-step explanation:

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Use law of sines or law of cosines to find the length of side AB Please show work !!

scoray [572]

Answer:

$AB = 11.3$

Step-by-step explanation:

Given

The attached triangle

Required

Length AB

To do this, we make use of sine law which is represented as:

$\frac{a}{\sin(a)} = \frac{b}{\sin(b)} = \frac{c}{\sin(c)}$

So, we have:

$\frac{15}{\sin(70)} = \frac{AB}{\sin(45)}$

Make AB the subject

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3 years ago

Also, explain why and how you got it right and the one that's red is wrong

Yanka [14]

Two corresponding angles are congruent implies the two lines are parallel. This is the definition of the converse of the corresponding angles theorem.

7 0

3 years ago