Answer:
2x - 25
Step-by-step explanation:
Since we don't know what the number is, just call it x. Twice x can be written as 2x and 25 fewer than 2x is 2x - 25.
The ratio would be 1:4, I would start with dividing each number by 2 then working from there. With diving by two you would end up with 3:12 which you then can divide by 3 since 12 is divisible by 3. This would get you 1:4.
Answer:
Step-by-step explanation:
l= 20 in ; b = 40 in; h = 50 in
Surface Area = 2*(lb+bh+hl)
= 2*(20*40 + 40*50 + 50*20)
=2*(800 + 2000 + 1000)
=2*3800
= 7600 square inches
3. 140= 3x +x
140= 4x
140/4 = 4x/4
35=x
3x= 35 * 3
3x= 105
The length is 105 ft
4. Number of dimes= d and number of quarters=q
d+q= 27
10d + 25q= 405
d= 27-q
10(27 -q) +25 q= 405
270 -10q + 25q= 405
270 + 15q= 405
15q= 135
q=9
d + q= 27
d +9=27
d=18
She has 18 dimes
5. 6 gal with a 50-50 split means 3 gallons each. The 60-40 has 3 gallons of lime. If 3 gal is 60%, the volume is 5 gal. We need to add 1 gallon
