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Rudiy27
3 years ago
8

please help i need this answered as soon as possible!!! -Use ΔDEF, shown below, to answer the question that follows:

Mathematics
2 answers:
yulyashka [42]3 years ago
7 0

Answer:

X= 139

Step-by-step explanation:

the square on the E means its a right side so that would be 90 degrees.  All triangles add up to 180.  F would be 41 degrees.  that mean X is  139 i think.

Olegator [25]3 years ago
6 0

Answer:

36.083

Step-by-step explanation:

SOHCAHTOA

Cosine is adjacent over hypotenuse, so the

cos(49) = the adjacent side (x) || over the hypotenuse (55)

cos(49) = x/55

55cos(49) = x

x = 36.083

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Step-by-step explanation:

a.

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A system of equations is shown below. y = –x – 3 5x + 2y = 9 What is the solution to this system?
erastovalidia [21]

Answer:

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Step-by-step explanation:

Given system of equations:

y=-x-3

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To solve the given system of equations:

Solution:

We will use substitution to solve the given system.

We will substitute the y values in terms of x from the equation y=-x-3 into the other equation to solve for x

Substituting y=-x-3 into 5x+2y=9.

We have:

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