Answer:
the answer is A
Step-by-step explanation:
Answer:-19
Step-by-step explanation:
3x+5-(2x-3)=0
3x+5-2x+3=0
x+8=0
x=-8
substitute x into 3x+5 to find the length of MO
3x+5
3(-8)+5
-24+5
-19
Answer:
46
Step-by-step explanation:
Answer:
40 Rs 2 coins equal to Rs 80.and this amounts 140— 80= Rs60.if i exchange one Rs 2 by one Rs 5 balance amount decreases by Rs3.For exhausting Rs 60 i shall have to exchange 60/3=20 Rs 2 coins.Thus 20 Rs 5 coin shallb there.ans.
Step-by-step explanation:
answer not mine but hopefully it helps
Answer:
72 kg
Step-by-step explanation:
For concreatting a tower cement, sand, stones are in the ratio 1:2:4 For 144kg sand.. What amount of cement is required?
We are given the ratio
cement: sand:stones
= 1:2:4
The sum of proportion =
1 + 2 + 4 = 7
We are given the kg of sand = 144kg
Step 1
We find the total kg of cement, sand and stones = x
Using the proportion of sand,
2/7 of x = 144kg
2/7 × x = 144kg
2x/7 = 144kg
Cross Multiply
2x = 7 × 144kg
x = 7 × 144kg/2
x = 504kg
Therefore the total kg of cement, sand and stone = 504kg
Step 2
The amount of cement required is calculated as:
1/7 × 504 kg = 72 kg
Therefore, 72kg of cement is required.
