Start with x:
Since x and 57º make a straight line, x+57 = 180 (because a line is 180º). This says x=123º

Now for y:
Because lines m and n are parallel, y and 57º are alternate interior angles and have the same measure. y=57º

Finish with z:
Since y and z make a straight line, can you finish that one from here?

6 0

3 years ago

Express as a trinomial.<br> (3x + 7)(3x + 4)

timama [110]

Answer:

9x² + 33x + 28

Step-by-step explanation:

$(3x + 7)(3x + 4)\\= 3x(3x + 4) + 7(3x + 4)\\= 9x^2 + 12x + 21x + 28\\= 9x^2 + 33x + 28$

5 0

3 years ago

Alex is 1.88 meters tall and Belle is 1.73 meters tall. How much taller is Alex than Belle in meters

Katarina [22]

Answer: 0.15 meters taller

Step-by-step explanation:

3 0

3 years ago