8/x-7=7/2
16=7(x-7) cross multiply
16=7x-49
-7x=-49-16
-7x=-65 divides each side by -7
-7x/7=-65/7
X=65/7
Alternative form
X=92/7
Which is 1st options in your questions.
Hope this helps!
Answer:
Step-by-step explanation:
Use implicit differentiation:
Remember to treat "y" as a constant in implicit differentiation and include dy/dx.
To know the exact value of <span> tan(157.5°), you only have to enter the value in your calculator:
First, press the buttton identified as "tan" and then write 157.5. The next step you must follow is press the button with the symbol of equal: "="
Now, the value of tan(157.5°) will appear on the screen of you calculator.
As you can see, the exact value of </span>tan(157.5°) is:
tan(157.5°)=-0.4142
The base angles of isosceles triangles are congruent therefore Angle c also measures 4x+6. add all 3 angles of any triangle you always get 180
3x+47 + 4x+6 + 4x+6=180
11x=121
x=11 the three angles measure 80, 50, and 50
