Answer:
7.5 kg
Step-by-step explanation:
Ratio of sand to cement = 24kg : 5kg
Today he needs to make the same type of mortar mix, but he will use 36kg of sand.
Let
x = quantity of cement used
Ratio of sand to cement = 36 kg : x kg
Equate both ratios
24 kg : 5 kg = 36 kg : x kg
24/5 = 36/x
Cross product
24 * x = 5 * 36
24x = 180
x = 180/24
x = 7.5
x = quantity of cement used = 7.5 kg
Answer:
-300.
Step-by-step explanation:
First, you'd have to subtract 1500 from 1200. This gives you 300, but since she is descending rather than ascending, the number is negative rather than positive.
Answer:
though this is difficult i know you would get it. Anyhow im real tired... will solve later... gl
Answer:
7/ (3a-1)
Step-by-step explanation:
3a^2 -13a +4 28+7a
------------------ * --------------------
9a^2 -6a+1 a^2 -16
Factor
(3a-1)(a-4) 7(4+a)
------------------ * --------------------
(3a-1) (3a-1) (a-4)(a+4)
Cancel like terms
1 7
------------------ * --------------------
(3a-1) 1
Leaving
7/ (3a-1)
Answer:
The Proof for 
is below.
Step-by-step explanation:
To Prove:
Proof:
We know law of indices
Therefore,
Step 1: Applying law of indices
Step 2: Taking common 
we get
Step 3: 
so add 5 + 1 we get
Step 4: Cancel 6 from both denominator and numerator we get
...That is Divisible by 6 Proved
