What's X? to: 15x - 7x = (-52) - 5x
2 answers:
First, condense what's on the right side of the problem:
Nest, get all the terms with x on one side. To do this, add 5x to both sides:
Finally, divide each side by 13 to get x alone:
The answer is x = -4.
To check, simply plug -4 in for x like so:
Since we get the same answer on both sides of the equation, we know our answer is correct!
Hope this helps!
Nest, get all the terms with x on one side. To do this, add 5x to both sides:
Finally, divide each side by 13 to get x alone:
The answer is x = -4.
To check, simply plug -4 in for x like so:
Since we get the same answer on both sides of the equation, we know our answer is correct!
Hope this helps!
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See the picture to better understand the problem
we know that
in the triangle ABC
∠A+∠B+∠C=180°
∠C=180-(86+69)-----> ∠C=25°
Applying the law of sines
b/sin B=c/sin C------> b=c*sin B/sin C-----> b=82*sin 69/sin 25
b=181.14 ft
the answer is
181.14 ft
we know that
in the triangle ABC
∠A+∠B+∠C=180°
∠C=180-(86+69)-----> ∠C=25°
Applying the law of sines
b/sin B=c/sin C------> b=c*sin B/sin C-----> b=82*sin 69/sin 25
b=181.14 ft
the answer is
181.14 ft
Angle QRT is an exterior angle to the triangle. The rule is that the exterior angle of a triangle is equal to the sum of its remote interior angles. Those remote interior angles are angle RTS and angle TSR. So our equation is 
. We can remove the parenthesis and simplify by combining like terms to get 9x = 5x + 9 + x and 9x = 6x + 9 and 3x = 9. That means that x = 3.