If the length of one side of an equilateral triangle measures 40 cm, what is the length of its altitude? State the letter of the correct answer.​

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

-9

step-by-step explanation:

2+2 obliviously is 4.

-x represents miles per gallon

-y represents cargo weight

-vehicle traveled an average of 5.3 miles per gallon(x1) with load of 22 tons (y1)

- vehicle traveled an average of 6.3 miles per gallon( x2) with load of 18 tons( y2)

so, equation now becomes

so, option a) is correct