Answer:
The smallest number is 7
Step-by-step explanation:
Using simultaneous equation;
x+y = 18.....(1)
4x-y = 17.....(2)
from equation (1)..
x+y = 18
y = 18-x...(3)
substitute y into equation (2)
4x-y = 17
4x-(18-x) = 17
4x-18+x = 17
4x+x = 17+18
5x = 35
x = 35÷5
x = 7
substitute x into equation (3)
y = 18-x
y = 18-7
y = 11
Therefore; x=7
y=11
11+7=18
(4×7)-11=17
the smallest number is 7
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Answer:

The value of x is greater than or equal to 7/6
Step-by-step explanation:

Solve the inequality for x
Subtract 3.75 from both sides


Now divide both sides by 1.5

Simplify the fraction by dividing top and bottom by 0.25

The value of x is greater than or equal to 7/6
Answer:
7%
Step-by-step explanation:
Answer:
None, the answer should be a=1/2
Step-by-step explanation:
Lets solve the system by ourselves.
Lets sum 'a' variable to both sides of equality sign.
We have
4a+1=3
Now lets subtract 1 to both sides of equality sign
4a=2
we obtain a=1/2.