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3 years ago

Use elimination to solve 2x+3y=4 4x+6y=-5

Mathematics

1 answer:

zvonat [6]3 years ago

8 0

There is no solution to the problem because it is parallel.

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How do I solve this? It says find the value of x, then find the angle measures of the polygon.

Anni [7]

180 = 65 + (x-5) + x
-65 -65

115 = x - 5 + x

115 = 2x - 5

2x = 120

x = 60

The angle measures are 65, 60, and 55 degrees.

4 0

3 years ago

PLEASE HELP ME I WILL GIVE 20 POINTS PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE I forgot how to do this stuff

VikaD [51]

Answer:

Step-by-step explanation:

Angles on a straight line sum to 180

65+35=100

180-100=80

angle r=80

6 0

3 years ago

Read 2 more answers

Need help with this

svlad2 [7]

Answer:

What is questions?

Step-by-step explanation:

What is questions?

6 0

2 years ago

Please help i beg i never get these right

Anuta_ua [19.1K]

Answer:

$\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}$

Step-by-step explanation:

Given

$\sin(105^o)$

Required

Solve

Using sine rule, we have:

$\sin(A + B) = \sin(A)\cos(B) + \sin(B)\cos(A)$

This gives:

$\sin(105^o) = \sin(60 + 45)$

So, we have:

$\sin(60 + 45) = \sin(60)\cos(45) + \sin(45)\cos(60)$

In radical forms, we have:

$\sin(60 + 45) = \frac{\sqrt 3}{2} * \frac{\sqrt 2}{2} + \frac{\sqrt 2}{2} * \frac{1}{2}$

$\sin(60 + 45) = \frac{\sqrt 6}{4} + \frac{\sqrt 2}{4}$

Take LCM

$\sin(60 + 45) = \frac{\sqrt 6 + \sqrt 2}{4}$

Rewrite as:

$\sin(60 + 45) = \frac{\sqrt 2 + \sqrt 6}{4}$

Hence:

$\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}$

3 0

2 years ago

What geometric figure is the union of two non-collinear rays AB and AC?

Rufina [12.5K]

BC is the answer love... have fun on that I-Ready Diagnostic

6 0

2 years ago