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3 years ago

Complete the solution of the equation. Find the

Mathematics

2 answers:

weeeeeb [17]3 years ago

7 0

Answer: " y = -10 . "

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Step-by-step explanation:

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The question:

Find the value of "y" when "x" equals 17.

Given the equation:

- x + y = -27 ;

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We plug in the given value: "17" ; for "x" ; and solve for "y" :

- 17 + y = -27 ;

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↔ y + (-17) = -27 ;

Rewrite as:

y − 17 = -27 ; {since: "adding a negative value" is the same

as "subtracting a positive value."}.

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Now, we add "17" to each side of the equation;

to isolate "y" on one side of the equation; and to solve for "y" :

y − 17 + 17 = -27 + 17 ;

to get:

y = - 10 .

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Hope this is helpful to you.

Best wishes to you in your academic pursuits—

and within the "Brainly" community!

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Liula [17]3 years ago

5 0

Answer:

y = -10

Step-by-step explanation:

When x = 17, the equation be -17 + y = -27 when you plug in 17 for x

Then, add 17 to both sides to get y = -10

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A point G is 40m away from a building, which is 15m high. What is the angle of elevation to the top of the building from G?

stepladder [879]

Ф is the angle of elevation to the topo of the building from G.
length of leg adyacent to angle Ф=40m
length of leg opposite to angle Ф=15 m
tan Ф=leg opposite / leg adyacent=15/40=0.375
Ф=arctan 0.375=20.56º

The angle of elevation to the top of the building from G is 20.56º.

8 0

3 years ago

If angle ABC is one degree less than three times angle ABD and angle DBC=47 find each measure

Contact [7]

It has not been indicated whether the figure in the questions is a triangle or a quadrilateral. Irrespective of the shape, this can be solved. The two possible shapes and angles have been indicated in the attached image.

Now, from the information given we can infer that there is a line BD that cuts angle ABC in two parts: angle ABD and angle DBC

⇒ Angle ABC = Angle ABD + Angle DBC

Also, we know that angle ABC is 1 degree less than 3 times the angle ABD, and that angle DBC is 47 degree

Let angle ABD be x

⇒ Angle ABC = 3x-1

Also, Angle ABC = Angle ABD + Angle DBC

Substituting the values in the above equations

⇒ 3x-1 = x+47

⇒ 2x = 48

⇒ x = 24

So angle ABD = 24 degree, and angle ABC = 3(24)-1 = 71-1 = 71 degree