The answer is 11. don't worry, I often forget the basics too XD
F(x)=5x+10
5x=-10
x=-10/5
x=-2
Result is f(-2).
Answer:
the number of laps he swam the last day = 5 laps
Step-by-step explanation:
Total swimming = 558 laps
Number of days = 79⁵/₅₅₈ days
Hence the number of laps he swam the last day = 5 laps
The value of sin(2x) is
Explanation:
Given that
The formula for is
Since,
Also, it is given that
Thus, and
To find the hypotenuse, let us use the pythagoras theorem,
Now, we can find the value of sin x and cos x.
Now, substituting these values in the formula for sin 2x, we get,
Thus, the value of sin(2x) is
Answer:
y = x + 7
Step-by-step explanation:
The slope-intercept form of a line is:
y = mx + b
where m is the slope and b is the y-intercept.
Looking at the graph, we can see that the line intersects the y-axis at y = 7. So 7 would be our y-intercept.
To find the slope, we would divide the rise of the line by the run. Or m = rise/run. From looking at the graph, we can see that for every 1 unit the line moves in the x-direction, the line moves in the y-direction by 1 unit. Therefore, the rise would be 1 and the run would be 1. 1/1 = 1 so the slope of the line would be 1.
Plugging in 7 for b and 1 for m into the equation for the slope-intercept form, we get:
y = x + 7
So that would be the equation for the line in slope-intercept form.
I hope you find my answer and explanation to be helpful. Happy studying.