The relevant rules of exponents are
1.
2.
Answer:
y = 14
Step-by-step explanation:
If the line is horizontal, it will always have the ssame value of y for all values of x. Therefore, y = 14.
Answer:
SA = 18.2+10.4h
59.8yd²
Step-by-step explanation:
Surface area of a 3D shape is the sum of the areas of its faces. A rectangular prism is made of 2 rectangles that make the top and bottom, plus four equal, larger rectangles.
surface area = 2(small rectangles)+4(large rectangles)
surface area = 2(3.5*2.6)+4(2.6h)
SA = 18.2+10.4h
SA = 18.2+10.4h
SA = 18.2+10.4(4)
SA = 18.2+41.6
SA = 59.8yd²
I guess you want to find the average speed for the whole journey
average speed = distance travelled / time
the distance from home to the shop = speed * time = 0.5*10 = 5 miles
time for travelling back = distance / speed = 5/30 = 1/6 hours
average speed for whole journey = 10 / (1/2 + 1/6) = 10 * 3 / 2 = 15 mph
112 is the answer. I am not really sure what the parenthesis are for, but those answers in the parenthesis are wrong.