Answer:
x + 5 = -3
x=-10
2(3x - 8)
Step-by-step explanation:
1-
Multiply both sides of the equation by 5: 4x + 25 = -15
Move the constant to the right-hand side and change its sign : 4x = -15 - 25
Calculate the diffrerence: 4x = -40
Divide both sides of the equation by 4 : x= -10
2-
Collect like terms: 6x-4-12
Factor out 2 from the expression : 2(3x - 8)
Answer:
5x+5y
Step-by-step explanation:
WORK:
61 + 53 = 114
798 ÷ 114 = 7
ANSWER:
They will be 798 miles apart in 7 hours.
First thing to do is to switch the x and the y and then solve for the new y. Easier said than done! Here's our equation with the switch:
. We need to get that y out from inside that exponent. This is an exponential equation, and the inverse of an exponential equation is a log equation. Let's do some simplifying here first:
. The 2 is now the base of our log (x-6) so now we have
, which is the last choice above.
