<span>twice the sum of a number and seven is 8
2(x+7)=8</span>
Answer:
The number is 86
Step-by-step explanation:
Let the number be
, then the reverse is 
The sum of the reversed number and the original number is 154,

We simplify this to get:
....eqn(1)
If the ones digit in it is 2 less than the tens digit, then
....eqn(2)
Putt equation (2) in (1)





Put x=8 in the second equation:

The original number is 86
Answer:
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Step-by-step explanation:
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W
d
xd
q4444444444
Answer:
slope = 4
Step-by-step explanation:
Answer:23 mm
Step-by-step explanation:
add both 15 and 8 because they are as long as the one on the bottom