Mathematics
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OpenStudy (anonymous):
Fifty-three plus four times b is as much as 21. Help!!! Fan+ Medal!
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OpenStudy (anonymous):
is it 53+4b=21?
OpenStudy (anonymous):
@jim_thompson5910
OpenStudy (anonymous):
sry i dont know this one
OpenStudy (anonymous):
ok
jimthompson5910 (jim_thompson5910):
you have the correct equation set up
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OpenStudy (anonymous):
@jim_thompson5910 do you know?
OpenStudy (anonymous):
oh...
OpenStudy (anonymous):
So I am correct?
jimthompson5910 (jim_thompson5910):
I'm guessing they want you to solve for b? or just set up the equation?
OpenStudy (anonymous):
just setup
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OpenStudy (anonymous):
or basically put it in number form
jimthompson5910 (jim_thompson5910):
then you have the correct answer they want
OpenStudy (anonymous):
The sum of 5 times h and twice g is equal to 23
OpenStudy (anonymous):
5h+g^2=23
OpenStudy (anonymous):
????
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jimthompson5910 (jim_thompson5910):
`twice g` means `2 times g`
jimthompson5910 (jim_thompson5910):
so instead of g^2 you should have 2g
OpenStudy (anonymous):
oh ok
jimthompson5910 (jim_thompson5910):
g^2 means "g squared"
g^2 = g*g
OpenStudy (anonymous):
5h+2g=23?
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OpenStudy (anonymous):
is that right?
jimthompson5910 (jim_thompson5910):
correct
OpenStudy (anonymous):
ok....can u help with a couple more?
jimthompson5910 (jim_thompson5910):
I'll help with one more
OpenStudy (anonymous):
One forth the sum of r and ten is identical to r minus 4
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OpenStudy (anonymous):
would you use a fraction for one forth...or literally use 1/4?
jimthompson5910 (jim_thompson5910):
1/4 is a fraction, so yes
jimthompson5910 (jim_thompson5910):
" the sum of r and ten" what does that translate to?
OpenStudy (anonymous):
+++++
jimthompson5910 (jim_thompson5910):
what do you mean?
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OpenStudy (anonymous):
Addition?
jimthompson5910 (jim_thompson5910):
yes so " the sum of r and ten" means r+10, agreed?
OpenStudy (anonymous):
Yes
OpenStudy (anonymous):
so 1/4 (x or +) r+10
jimthompson5910 (jim_thompson5910):
so 1/4 of that is simply \[\Large \frac{1}{4}(r+10)\]
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jimthompson5910 (jim_thompson5910):
1/4 times (r+10)
or
1/4 * (r+10)
OpenStudy (anonymous):
ok...
OpenStudy (anonymous):
\[\frac{ 1 }{ 4} \times r+10=r-4\]
OpenStudy (anonymous):
correct?
jimthompson5910 (jim_thompson5910):
don't forget the parenthesis around the "r+10"
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OpenStudy (anonymous):
ohh ok
jimthompson5910 (jim_thompson5910):
the 1/4 is being multiplied by ALL of "r+10" and not just the r
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
1 more?
OpenStudy (anonymous):
Degrees Kelvin K equals 273 plus degrees Celsius C
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jimthompson5910 (jim_thompson5910):
what do you have for this one
OpenStudy (anonymous):
K+C=273
OpenStudy (anonymous):
idk
jimthompson5910 (jim_thompson5910):
you have the equal sign in the wrong spot
jimthompson5910 (jim_thompson5910):
have a closer look at the original sentence
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OpenStudy (anonymous):
k=273+c
jimthompson5910 (jim_thompson5910):
correct
OpenStudy (anonymous):
the total cost of C is the price per gallon times the number of gallons g.
OpenStudy (anonymous):
GP=C