Answer:
2 bags of stone
Step-by-step explanation:
Lets do one at a time. Cement first.
he needs 180 kg of cement.
1 bag is 25 kg, so in total he needs 8 because 7 would get him 175, so he would need just a little bit more. And I assume you can't but part of a bag he needs to but one full more bag. If he already has 8 then he doesn't need any more.
Needs 375 kg of sand
Each bag has 22.5 kg inside
he needs 17 bags total of sand because 16 would only give 360
Since he already has 19 bags he has 427.5 kg of sand so he doesn't need any more.
Needs 1090 kg of stone
Each bag has 50 kg of stone
He needs 22 bags since 21 would just give him 1050 kg
He has 20 so he needs two more bags
So in total he needs two bags of stone. Let me know if there was anything you didn't understand.
Answer:
41
Step-by-step explanation:
Matrix Multiplication follows a row-column format. In order to compute this, you must be familiar with vector dot products.
With that in mind, lets get straight into it.
The order that matrix multiplication follows means that the terms in the result are filled in left to right, then top to bottom.
Therefore, a21 will be the 3 value that is computed. This is important becuase this allows to directly compute a21, instead of using up a lot of time computing all the values before.
As a21 is located in the bottom row 1st column, we take the dot product of the 2nd row in matrix 1 and the 1 column in matrix two.
So we have:
(7 2) dot (5 3) = 7*5 + 2*3 = 41
Answer:
Joseph is correct
Step-by-step explanation:
I cannot see the options in the drop-down menus. Even though, Joseph is correct because the difference between the longest length (which is 12 ft) and shortest length (which is 9 1/2 ft) is 12 - 9 1/2 = 2 1/2 ft. It doesn't matter how many ropes measure those lengths.
Answer:
11
Step-by-step explanation:
(Note that the diagram is not to scale)
You know BC is 6
You know DC is 5
You know CE is 12
Using K's position, it shows that AC is one off from EC
AC=11
Answer:
3 slices
Step-by-step explanation:
12-75%=3
