Step-by-step explanation:
Answer:
Step-by-step explanation:
J
Which means shes left with at least Two pennies right which in that case he bought She bough 2 packs
First plug in 2 for r like so:
-9(2) - 7
To solve this you must use the rules of PEMDAS (Parentheses, Exponent, Multiplication, Division, Addition, Subtraction)
REMEMBER: IF NOT APPLICABLE TO THE EQUATION YOU MAY SKIP THAT STEP IN PEMDAS .
First we have multiplication:
-9(2) - 7
-9(2) = -18 <<< When multiplying a negative and positive number together you will multiply normally and the answer will have a negative sign
-18 - 7
Now for the subtraction:
-18 - 7 <<< When subtracting with a negative number you will do something called "Same-Add-Opposite." This means that you will keep the first number in the expression (in this case that is -18) the same. Then turn the subtraction sign into an addition sign. Finally you will take the "opposite" sign of the second number. When I say "opposite sign" I mean that if this number is positive it will become negative. If it was negative it will become positive.
Here is your expression after applying same - add - opposite:
-18 + (-7)
-25
Hope this helped!
~Just a girl in love with Shawn Mendes
The complete question is
<span>A vehicle travels a distance of 5t^4-10t^2+6 miles in t+2 minutes how fast is the vehicles speed
we know that
speed=distance/time
distance=</span>5t^4-10t^2+6 miles
time=t+2 minutes
so
You have to divide the distance by the time
speed=[5t^4-10t^2+6]/[t+2] miles/minute
the answer is
the speed is [5t^4-10t^2+6]/[t+2] miles/minute