The first one is 4n+7=15, the second one is 1/4(n-15), the third one is 1/4n-15, the fourth one is n/7=4, and the last one is n4+7=15
Answer: The y intercept is -7 or (0,-7)
Step-by-step explanation:
First convert the equation into slope intercept form .
y - 3 = -2(x + 5) Multiply on the right side
y -3 = -2x - 10 Add 3 to both sides
+3 +3
y = -2x - 7
In this case the y intercept is -7 and it is when x is zero.
Answer:
Average speed =
miles per hour
Step-by-step explanation:
Formula to calculate the average speed of an object is,
Average speed = ![\frac{\text{Total distance covered}}{\text{Time taken to cover this distance}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BTotal%20distance%20covered%7D%7D%7B%5Ctext%7BTime%20taken%20to%20cover%20this%20distance%7D%7D)
If I travel with the speed of x mph for t hours,
Total distance covered = Speed × Time
=
=
miles
Similarly, if I travel with the speed y mph for t hours,
Total distance covered =
miles
Total distance covered by me =
miles
Total time taken to cover this distance = ![t+t](https://tex.z-dn.net/?f=t%2Bt)
=
hours
Therefore, expression for the average speed will be,
Average speed = ![\frac{xt+yt}{2t}](https://tex.z-dn.net/?f=%5Cfrac%7Bxt%2Byt%7D%7B2t%7D)
= ![\frac{(x+y)t}{2t}](https://tex.z-dn.net/?f=%5Cfrac%7B%28x%2By%29t%7D%7B2t%7D)
=
miles per hour
Answer:
27.6
Step-by-step explanation:
sin29=x/57
0.48480962=x/57
x≈27.6