Answer:
It took her 4 hours to complete her homework
Step-by-step explanation:
Let x be the time taken to complete her homework
From the question, Annabelles homework is 75% complete and it took her 3 hours, this implies that;
75% of the homework done = 3hours
75% × x = 3
× x = 3
= 3
Multiply both-side of the equation by 100
× 100= 3×100
At the left-hand side of the equation, 100 will cancel-out 100
75x = 300
Divide both-side of the equation by 75
75x/75 = 300/75
x = 4 hours
It took her 4 hours to complete her homework
Answer:
<h2>3x - y + 7 = 0</h2>Step-by-step explanation:
The slope-intercept form of an equation of a line:
m - slope
b - y-intercept
Put the given y-intercept b = 7 and the coordinates of the point (-2, 1) to the equation:
<em>subtract 7 from both sides</em>
<em>divide both sides by (-2)</em>
We have the equation:
Convert it to the general form :
<em>subtract 3x and 7 from both sides</em>
<em>change the signs</em>