Answer:
45
Step-by-step explanation:
Let the unit place be ‘x'
Tenth place be y
The number is 10y+x
x+y = 9 (according to the condition) (1)
Digits are interchanged Unit place' y ‘& tenth place ‘ x'
New no is 10x +y
This is 9 more than the original number
10x+ y = 10y+x +9
10x-x+y-10y = 9
9x-9y= 9
x-y = 1 (dividing by 9) (2)
Adding the two equations
2x = 10
x= 5
Substituting the value of x in first equation
y = 4
The number is 45, the original number is 54 this is 9 more of the new number.
Answer:
126
Step-by-step explanation:
180-54=126
Answer:
a/(√b)(√2c)
Step-by-step explanation:
√(2a/3b) X √(6a/4c) = √(2a*6a)/√(3b*4c)
a/2√12/(√3b*2c) = 2a/2(√1/√b*2c
a/(√b)(√2c)
Her unit rate would be either 4 mph or 1/4 mph. For 4 mph, you have to multiply 2/3 * 6/1 =4. For 1/4, you have to multiply 1/6 * 3/2 =1/4.
Answer:
do u have an image of the problem?
Step-by-step explanation:
