Answer:
Let’s find out...
Step-by-step explanation:
21 x 13 = 273
(13 x 20) + (13 x 1) =
260 + 13 = 273
So this one matches
(21 x 10) + 213 =
210 + 213 = 423
Does not match
(30 x 13) - (9 x 13) =
390 - 117 = 273
This one matches
(20 x 10) + (1 x 3) =
200 + 3 = 203
Does not match
Area=length*width
length=5+width
area=(5+w)(w)
area=5w+w^2
area=x^2+5x=300
x^2+5x-300=0
(x+20)(x-15)=0
x=15
w=15
l=5+15
l=20
Answer:
x=32
Step-by-step explanation: x/2-7=9 find what number minus 7 equals 9 multipy that by 2 and there you go that is the answer
6 7
Go up 6
And to the right 7
So coordinates 6 , 7
Givesn
Let P = 10x + y
Let Q = 10y + x
Solve
P - Q = 54 Substitute in for x and y
10x + y - 10y - x = 54
9x - 9y = 54 Divide the entire equation by 9
x - y = 6
Start by letting x = 9
9 - y = 6 Subtract 9 from both sides.
-y = 6 - 9
-y = - 3
y = 3
Therefore P is 93 <<<< Answer
Check
93 - 39 = 54 which checks.
