Answer:
i think options are incorrect
x is 20 here
you can verify by putting value
Answer:
Step-by-step explanation:
let the number be x and y
then from first condition
x - y = 3
x = y + 3
again from second condition
1/ x + 1/ y = 7 / 10
1/(y+3) + 1/y = 7 / 10
y + (y+3) = 7/ 10 y(y+3)
10(2y + 3) = 7y² + 21y
or, 7y² + 21y - 20y - 30 = 0
or, 7y² + y - 30 = 0
0r, 7y² - 14y + 15y - 30 = 0
or, ( y-2) ( 7y + 15) = 0
either
y = 2 0r -15/7
if two number are natural then two is only valid number
again from first condition
x - y =3
x - 2 = 3
x =5
Answer:
1
Step-by-step explanation:
1 1/3 = 4/3
4/3 - 1/3
drop the bottom 3 since it is a common denominator
4 - 1 = 3
bring the 3 back
3/3 = 1
Answer: 24
Step-by-step explanation:
The other information regarding the question is that the Medium pizza cost $9 while the Large pizza cost $15.
The number of medium sized pizza that Wright sold will be represented by x.
(5 × $15) + ($9 × x) = $291
$75 + 9x = $291
9x = $291 - $75
9x = $216
x = $216/9
x = 24
He sold 24 medium pizza
-3x^2 +10x
All you have to do is combine like terms!
