Answer:
Step-by-step explanation:
surface area=area of sides +area of top and bottom
=2(4+5)×8+2×(4×5)
=2[(9×8)+20]
=2[72+20]
=2×92
=184 m²
Answer:
y=-6
Step-by-step explanation:
1. plug in the values, it will be y=4/3(-6) + 2
2. simplify
y=-24/3 + 2
y=-8+2
y=-6
I hope this helped, and if it did, please mark this as brainliest! thanks
Answer:
Chantal and Trisha will have both traveled 105 miles in 20 minutes.
Step-by-step explanation:
is distance in miles, is time in hours.
The two equations are:
Set them equal to each other and solve for x:
Plug that back into the equations to confirm this gives the same :
Answer:
4:10
Step-by-step explanation:
use ratio and further divide
Answer: 30 dominoes in total.
Step-by-step explanation:
Each line is 21 inches long.
the space between dominoes is 1 + 1/2 inches.
(assuming that the distance includes the domino itself) Now, we need at least two dominoes to see this distance,
The we have N + 1 dominoes per line, and the distance is:
N*(1 + 1/2)inches = 21 inches
If we find N, we can find the number of domineoes in each line:
N = 21/(1 + 1/2) = 14
This means that we have 14 + 1 = 15 dominoes in each line, and we have two lines, so we have 30 dominoes in total.