Answer:
40°
Step-by-step explanation:
90°-50°=40°
The simplified expression of
is 
The expression is given as:

Expand the expression

Factor out 2

Combine the radicals

Expand the expression

Evaluate the roots

Expand

Hence, the simplified expression of
is 
Read more about simplified expressions at:
brainly.com/question/8008182
See attachment
then we add 7 and 5 and divide that by 2, which gives you
6 (x-coordinate)
and add 10 and -8 and divide that by 2, which gives you
1 (y-coordinate)the answer is (6, 1)justification
so midpoint is basically the middle point of 2 points
that's why we have to add the two x coordinates first then divide it by 2
or add the two y coordinates then divide it by 2
Y = mx + b
slope(m) = 4
(-3,-1)...x = -3 and y = -1
now we sub...we r looking for b, the y int.
-1 = 4(-3) + b
-1 = -12 + b
-1 + 12 = b
11 = b
so ur equation is : y = 4x + 11
Answer:they need to buy 27 boxes of plates.
Step-by-step explanation:I do not like expaining things.