3 years ago

Solve the system of linear equations using substitution. Show work please

Mathematics

1 answer:

weeeeeb [17]3 years ago

4 0

Where's the actual equation though?

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Solve each equation for 0° < x < 360°.

Ipatiy [6.2K]

Answer:

Hence value for x is 0 degree

Step-by-step explanation:

Given:

x limits are (0 to 360) degrees and

Cos(x+45)+cos(x-45)=Sqrt(2)

To Find:

value for X

Solution:

Given equation cos(x+45)+ cos(x-45)

Is similar to cos(A+B) +cos(A-B)=2cosA*cosB

Now comparing with general formula we get ,

A=x and B=45

Hence given equation becomes as ,

$2cosA*cosB=Sqrt(2)$

$2Cosx*cos45=Sqrt(2)$

$cosx=Sqrt(2)/(2*cos45)..........cos45=1/$ $\sqrt{2}$

$Cosx=Sqrt(2)/Sqrt(2)$

$cosx=1$

x= 0

Hence value for x is 0 degree

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3 years ago

Find the slope of the line passing through (-2,4) and (1,-8)

Naddik [55]

The slope is the change in Y over the change in X:

Slope = (-8 - 4) / (1 - -2)

Slope = -12 / 3

Slope = -4

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4 years ago

The diaz family is moving to texas.what is the minimum monthly salary they will need?

galina1969 [7]

There needs to be more information

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The table shows the party affiliation of a 100 senators 109th congress the ratio of Republicans to Democrats 5:4 how many senato

nadya68 [22]

Answer:

45 democrats

Step-by-step explanation:

if there are 55 Republicans

100-55= 45

your question was worded weirdly so I tried my best

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Find the zeros of the function. f(x) = x(x − 64)

Lesechka [4]

Answer:

x=0,64

Step-by-step explanation:

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