Whats -7m(1.2m – 2) + (-6m)

-7m(1.2m - 2) + (-6m) = -8.4m² + 8m

Step-by-step explanation:

Let us simplify the given expression

∵ The expression is -7m(1.2m - 2) + (-6m)

→ At first multiply the bracket by -7m

∵ -7m(1.2m - 2) = (-7m)(1.2m) - (-7m)(2)

∴ -7m(1.2m - 2) = -8.4m² - (-14m)

→ Remember (-)(-) = (+)

∴ -7m(1.2m - 2) = -8.4m² + 14m

→ Substitute it in the expression above

∵ -7m(1.2m - 2) + (-6m) = -8.4m² + 14m + (-6m)

→ Remember (+)(-) = (-)

∴ -7m(1.2m - 2) + (-6m) = -8.4m² + 14m - 6m

→ Add the like terms

∵ -7m(1.2m - 2) + (-6m) = -8.4m² + (14m - 6m)

∴ -7m(1.2m - 2) + (-6m) = -8.4m² + 8m

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.