Answer: C.
Step-by-step explanation:
tan 60°=sm(60°)/cos(60°)
Answer:
If A=10, then 2a+3=23
Step-by-step explanation:
2x10=20
20+3=23
Answer:
x=0 and y=5
Step-by-step explanation:
8x-25+2x=-25
Answer:
required expression = 11x-5
Step-by-step explanation:
We have information about the following things :
- Its a two digit number
- Units digit is 5 less than the tens digit
- tens digit is x
Since units digit is 5 less than the tens digit, then the unit digit will become
x-5
Now we have these two things:
- Tens digit is x
- Units digit is x-5
Now let us look at some two digit numbers like 29 , 43 and 78
in 29, tens digit is 2 and units digit is 9
29 is formed by multiplying the tens digit by 10 and multiplying the units digit by 1 like this : 29 = (2×10) + (9×1)
Similarly;
43 = (4×10) + (3×1)
78 = (7×10)+(8×1)
Now to get out two digit number from the question, we similarly need to multiply the tens digit with 10 and units digit with 1 and add them like this:
tens digit : x
Units digit : x-5
Hence the number is (x × 10) + [(x-5)×1] = 10x + x-5 = 11x-5
hence the required algebraic expression is 11x-5
