Answer:
Step-by-step explanation:
You really don't even have to calculate anything.
B can be reduced to 4/5 by dividing 24 by 6 and 30 by 6
C can be reduced to 1/15 by dividing 2 by 2 and 30 by 2
D can be reduced to 1/2.
The answer then is A
2 feet is 2 * 12 = 24 inches.
24/30 = 4/5. See B.
Answer:
7,9,11
Step-by-step explanation:
Let first number is x, second number is (x+2) and third number is (x+4).
ATQ,
The product of the smaller two integers is 3 less than 6 times the largest integer.
x(x+2) = 6(x+4)-3
x² + 2x = 6x+24-3
x² + 2x = 6x+21
x² + 2x -6x -21=0
x²-4x -21=0
It is a quadratic equation whose solution is :
x = -3 and x = 7
First number = 7
Second number = 9
Third number = 11
Hence, this is the required ssolution.
-6.5x + 3 < 19 - 2.5x
-6.5x + 2.5x < 19 - 3
-4x < 16
-4x/-4 > 16/-4
x > -4
W+d=869
w=d-81
plug in
(d-81)+d=869
2d-81=869
+81 both sides
2d=950
÷2 both sides
d=475
dryer cost $475
let's check w=475-81
w=394
475+394=869
869=869
the solution is true :)
