It has been hypothesized that treatment (after casting) of a plastic used in optic lenses will improve wear. four different treatments are to be tested. to determine whether any differences in mean wear exist among treatments, 28 castings from a single formulation of the plastic were made, and seven castings were assigned to each treatment. wear was determined by measuring the increase in "haze" after 200 cycles of abrasion (with better wear indicated by small increases). the data is listed below.

is it 35

step-by-step explanation:

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

so the possibilities of the measurement of the side of the triangle are either it is longest side or not the longest side

when it is the longest side

s < 25 + 35s < 60

if it is not the longest side

35 < 25 + s10 < sso 10 < s < 60so the perimeter70 < p < 130