Answer:
let the numbers be xy
general form of the number =10x+y
sum of digits of a number =14
x+y=14………[1]
if 18 is added to the number, then digits are interchanged
10x+y+18=10y +x
9x-9y=-18
X-y=-2………[2]
the linear equations are 1) x+y=14
2) X-y=-2
adding [1],[2]
2x=12
x=6
x+y=14
y=14-x
y=14-6
y=8
there fore the number =10*6+8
=68
check:-
1)6+8=14
2)68+18=86
I hope this helped!
Step-by-step explanation:
Answer:
16x^2 -3x-4
Step-by-step explanation:
Im guessing the -4 is subtracting from 3x so that's the awnser above. But if it is a exponet then your answer would be: -16x^4+2-3/x^4 the slash is the same as dividing.
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Answer:
1
Step-by-step explanation:
because I'm smart and I know my math ;)
X= 4
Because I need to answer a question in order to answer other questions so your welcome.
For number 3, C is the answer.
#4. D
the coefficient of x² is negative, so the graph opens downward.
the two zeros are (3,0) and (5,0)
cannot see the question when editing. I'll post it in the comments.