Jamel watched his older brother Robert lift weights. The bar alone had a mass of 20 kg. On the bar he had tow 11.4 kg weights, two 4.5 kg weights , and four 450 g weights. What mass was Robert lifting ?
Answers
Answer 1
Answer:
all you do is add them all together...
20 + 11.4 + 11.4 + 4.5 + 4.5 + 0.45 + 0.45 + 0.45 + 0.45 = 53.6Kg
(note that 0.45 is 450g in Kg, When adding things such as weight or length you want to make sure that they are all in the same unit)
20 + 11.4 + 11.4 + 4.5 + 4.5 + 0.45 + 0.45 + 0.45 + 0.45 = 53.6Kg
(note that 0.45 is 450g in Kg, When adding things such as weight or length you want to make sure that they are all in the same unit)
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please explain
Answers
The subtitution method is where you fill in a number into the place of the variable, the check the problem to see if the number fits by solving it..
x+2x=15
I don't see why someone would use the substitution method on this one. x+2x can be 3x because of how multiplication works like addition. Then you'd have 3x=15. You can then find the value of x by dividing each side by 3 so that the variable is alone. You'll have x=5
5x=2y+3
If the equations are part of the same problem, then you'll have 25=2y+3.
You could also solve this normaly, but I'll use the method you want this time.
You could put a number like 6 in for y. Then solve. You'll have that 25=15. Meaning 6 is too small, so then you could use a number such as 12. Solve, and you'll get 25=27. The answer would be too large, but barely. You could move down one, to 11. you'll have 25=25, so eleven is correct. Sorry if I typed too much.
If you wish to use the subtitution method, simply place a digit, that you think might fit, into the place where the variable is.
x+2x=15
I don't see why someone would use the substitution method on this one. x+2x can be 3x because of how multiplication works like addition. Then you'd have 3x=15. You can then find the value of x by dividing each side by 3 so that the variable is alone. You'll have x=5
5x=2y+3
If the equations are part of the same problem, then you'll have 25=2y+3.
You could also solve this normaly, but I'll use the method you want this time.
You could put a number like 6 in for y. Then solve. You'll have that 25=15. Meaning 6 is too small, so then you could use a number such as 12. Solve, and you'll get 25=27. The answer would be too large, but barely. You could move down one, to 11. you'll have 25=25, so eleven is correct. Sorry if I typed too much.
If you wish to use the subtitution method, simply place a digit, that you think might fit, into the place where the variable is.
Answers
9x - 3x - 15
6x - 15
Hope this helps.
6x - 15
Hope this helps.
please help me!!!
Answers
The answer to your question is:
It is a quadratic equation in 'x', with 'n' mistakenly typed in the second term..
Although you didn't ask for the solutions to the equation, I'm already here
so I might as well go through it and find them:
3x² - 2x - 5 = 0
In terms of the generic quadratic formula:
A = 3
B = -2
C = -5
Plug those into the quadratic formula, and you discover that
x = -1
and
x = ⁵/₃
It is a quadratic equation in 'x', with 'n' mistakenly typed in the second term..
Although you didn't ask for the solutions to the equation, I'm already here
so I might as well go through it and find them:
3x² - 2x - 5 = 0
In terms of the generic quadratic formula:
A = 3
B = -2
C = -5
Plug those into the quadratic formula, and you discover that
x = -1
and
x = ⁵/₃
hour to feet per minute.
Answers
Answer:55 miles per hour= 4840 feet per minute
Step-by-step explanation:
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3) 2 inches of rain each day for 3 days.
2 inches * 3 days = 6 inches of rain
If the rain had been snow, each inch of rain would have been 10 inches of snow. 1 inch rain = 10 inches snow
2 inches * 10 inches * 3 days = 60 inches of snow. CHOICE D.
4) 3/8 cup of milk , 2/8 cup of oil.
Total liquid used:
3/8 + 2/8 = 5/8 cup CHOICE B.
2 inches * 3 days = 6 inches of rain
If the rain had been snow, each inch of rain would have been 10 inches of snow. 1 inch rain = 10 inches snow
2 inches * 10 inches * 3 days = 60 inches of snow. CHOICE D.
4) 3/8 cup of milk , 2/8 cup of oil.
Total liquid used:
3/8 + 2/8 = 5/8 cup CHOICE B.
Answers
The common denominator of 5 and 8 is forty.
To go about solving this, do this:
2/5 and 1/8
2*8/5*8 and 1*5/8*5
16/40 and 5/40
Hope this helps!! :)
To go about solving this, do this:
2/5 and 1/8
2*8/5*8 and 1*5/8*5
16/40 and 5/40
Hope this helps!! :)
The common denominator would be 40.
You need to multiply 2 by 8, and 5 by 8 to get 16/40.
Then you need to multiply 1 by 5, and 8 by 5 to get 5/40.
The final answers are 2/5 = 16/40 and 1/8 = 5/40.
You need to multiply 2 by 8, and 5 by 8 to get 16/40.
Then you need to multiply 1 by 5, and 8 by 5 to get 5/40.
The final answers are 2/5 = 16/40 and 1/8 = 5/40.
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