Answer:
x = 11
Step-by-step explanation:
Given the expression;
5x+2y=67 ...1
x=3y−7 ....2
Substitute 2 into 1
5(3y-7)+2y = 67
15y - 35 + 2y = 67
17y = 67+35
17y = 102
y = 102/17
y =6
Recall that x = 3y - 7
x = 3(6) - 7
x = 18 - 7
x = 11
Hence the value of x is 11
Answer:
D)
Step-by-step explanation:
The opposite -4 is 4. So on the number line, -4 & 4 should have a point.
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Answer:

Step-by-step explanation:
To find the distance, we can use the distance formula:
when the given points are
and 
Plug in the points (-6.25,5) and (-3.75,2)

Therefore, the distance between the two coordinates is
, or approximately 3.91.
I hope this helps!
Answer:
Step-by-step explanation:
Let x = number of hours to pull weed in a day
Let y = number of hours to now lawn in a day
It takes her an average of 3 hours to pull weeds and an average of 2.5 hours to mow the lawn. She can work no more than 8 hours a day.
This means
3x + 2.5y is lesser than/ equal to 8
She charges $50 to weed and $65 to mow the lawn.
This means she charges
50x +65y
She needs to cover her expenses of $120 to make a profit. This means she needs to earn an amount greater than or equal to $120
50x + 65y greater than or equal to 120
Answer:
n=35
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable