Examine the diagram, what is the measure of angle 1?

71

Step-by-step explanation:

We can find the value of x

63 + 15x -3 = 180 since they from a straight line

Combine like terms

60 +15x = 180

Subtract 60 from each side

60-60+15x = 180-60

15x =120

Divide each side by 15

15x/15 = 120/15

x =8

We know that <1 = 8x+7  since they are vertical angles

                            = 8(8) +7

                            =71

the answer is 71

Step-by-step explanation:

hope it's helpful

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.