So first you would multiply 18 and 20% and with that answer you have to dive by 100 because that's the whole for a percent number, your answer should be $3.60
This expression can not be factored with
Answer:
5700 BTU
Step-by-step explanation:
Data provided in the question:
1 kwh = 3400 BTU’s
1 gallon = 8 pounds of water
Initial temperature = 50°F
Final temperature = 100°F
Water used by dishwasher = 10 gallons
Electrical energy used = 0.5 kwh
Now,
Water used in pounds = 10 × 8 = 80 lb
Total electrical energy used in BTU = 0.5 × 3400 BTU [ as 1 kwh = 3400 BTU]
Total electrical energy used in BTU = 1700 BTU
Energy used by water = Water used by dishwasher × Change in temperature × Specific heat of water
[ Specific heat of water = 1 BTU / °F.lb ]
Thus,
Energy used by water = 80 × 1 × ( 100 - 50 )
= 4000 BTU
Hence,
Total energy used = 1700 BTU + 4000 BTU = 5700 BTU
Answer:
i really donr know
Step-by-step explanation:
im so sorry
Answer: " \frac{1}{4} gal /hr ; or, write as: " 0.25 gal/hr. " .
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Step-by-step explanation:
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This is a "unit rate" problem;
that is: we want to solve for a particular quantity per [single] unit.
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→ in this case, per single "hour" ;
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So we convert:
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" 2 gal per 8 hours" ; to the correct number of:
_?_ gal per [single] hr.
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{<u>Note</u>: "gal" refers to: "gallon(s)" ;
"hr" refers to: "hour(s)" .}.
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→ "
gal / hr. " ;
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→ " {
[2÷2] / [8÷2] = 1/4 ;
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So, the answer is:
→ "
" ;
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or: write as decimal:
→ "
= (1 ÷ 4) = 0.25 " ;
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write the answer as:
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→ " 0.25 gal/hr. "
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Or, when we had:
→ "2/8" gal/hr ;
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Use calculator:
→ "
= "2 ÷ 8" ;
= " 0.25 gal/ hr.
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So: The correct answer is:
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" \frac{1}{4} gal /hr ; or, write as: " 0.25 gal/hr. " ;
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Hope this is helpful to you!
Best wishes in your academic endeavors—
and within the "Brainly" community!
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