Answer:
1. After rearranging the formula as 's' i.e speed is the subject will be given as
.
2. The average speed of a truck that travels a journey of 748 km in 11.5 hours is 65.04 kilometre per hour.
Step-by-step explanation:
Ans 1. subject means it come first in the sentence, hence here question is like write speed first in the formula so we have
![speed = \frac{distance}{time} \\ss = \frac{dd}{tt}](https://tex.z-dn.net/?f=speed%20%3D%20%5Cfrac%7Bdistance%7D%7Btime%7D%20%5C%5Css%20%3D%20%5Cfrac%7Bdd%7D%7Btt%7D)
Ans 2.
Given :
Total distance of a journey = 748 km
Total time taken for the journey = 11.5 h
To Find:
Average speed =?
Solution :
average speed is defined as of total distance covered divided by total time taken.
So, we have
![\textrm{average speed} = \frac{\textrm{total distance covered}}{\textrm{total time taken to complete total distance}} \\= \frac{748}{11.5} \\= 65.04\ km/h](https://tex.z-dn.net/?f=%5Ctextrm%7Baverage%20speed%7D%20%3D%20%5Cfrac%7B%5Ctextrm%7Btotal%20distance%20covered%7D%7D%7B%5Ctextrm%7Btotal%20time%20taken%20to%20complete%20total%20distance%7D%7D%20%5C%5C%3D%20%5Cfrac%7B748%7D%7B11.5%7D%20%5C%5C%3D%2065.04%5C%20km%2Fh)
3/4 = 18/24
7/8 = 21/24
1/6 = 4/24
11/12 = 22/24
The salad = 18/24 + 21/24 + 4/24 = 43/24
43/24 - 22/24 = 21/24
21/24 = 7/8
There are 7/8 cups left
Answer:
−35.713332 ; 0.313332
Step-by-step explanation:
Given that:
Sample size, n1 = 11
Sample mean, x1 = 79
Standard deviation, s1 = 18.25
Sample size, n2 = 18
Sample mean, x2 = 96.70
Standard deviation, s2 = 20.25
df = n1 + n2 - 2 ; 11 + 18 - 2 = 27
Tcritical = T0.01, 27 = 2.473
S = sqrt[(s1²/n1) + (s2²/n2)]
S = sqrt[(18.25^2 / 11) + (20.25^2 / 18)]
S = 7.284
(μ1 - μ2) = (x1 - x2) ± Tcritical * S
(μ1 - μ2) = (79 - 96.70) ± 2.473*7.284
(μ1 - μ2) = - 17.7 ± 18.013332
-17.7 - 18.013332 ; - 17.7 + 18.013332
−35.713332 ; 0.313332
Answer:
3 tens or 30
£12.35
Step-by-step explanation:
41,039
ten thousand thousands, hundreds tens ones
The three is in the tens place
3 tens or 30
£12 and 35
1p = £0.01
£12.35
Ground Beef - 480
Sugar - 260
Bananas - 288
Pasta - 396
You just multiply the packs and the pounds.