"+-" should always be changed to "-".
You have 3 - 7 - 2. You may evaluate this from left to right, obtaining -4 -2, or -6.
4 - 16 -2(2) involves multiplication, which must be carried out before addition or subtraction. Thus, 4 - 16 - 4. Working from left to right, we get -12 - 4 = -16
Answer:
See Below
Step-by-step explanation:
Small Box:
9 dollars for 12 pounds
Per pound cost is:
9/12 = $0.75 per pound
Large Box:
18 dollars for 30 pounds
Per pound cost is:
18/30 = $0.60 per pound
Better deal is large box.
To make the deals same, we can change the number of pounds in the large box. We can lessen it so it becomes the same ratio as dollars to pound.
Small box was
9 to 12
Large box is 18 dollars to WHAT?
18 is double of 9 so, "WHAT" should be double of 12, which is:
12 * 2 = 24
So, we can change large box "30" pounds to "24" pounds.
So, the ratio becomes (cost per pound):
18/24 = $0.75 per pound (same)
Answer:
see below
Step-by-step explanation:
(2x + i)(2x – i)
FOIL
first 2x*2x =4x^2
outer -i * 2x = 2x i
inner i * 2x = 2x i
last i * -i = -i^2 and i^2 = -1 so - (i^2 ) = - (-1) = 1
Add together
4x^2 + 2xi -2x i +1
Combine like terms
4x^2 +1
ANSWER
C. If it is not night, then the street lights will not come on.
EXPLANATION
The given statement is
"If it is night, then the street lights will come on"
Given the statement,
"If p, then q",
then the inverse of this statement is
"If it is not night,then the street lights will not come on"
"If not p, then not q"
The correct choice is C.
