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3 years ago

What is the difference between 3/7 and 1/14

Mathematics

1 answer:

Elza [17]3 years ago

4 0

(3/7)-(1/14)=(6/14)-(1/14)=5/14

use LCD to get a like denominator, then just subtract

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Plz help me with this question

tamaranim1 [39]

Answer:

i want to say 180 but try that and if its wrong im deeply sorry

Step-by-step explanation:

4 0

3 years ago

Bees are one of the fastest insects on Earth. They can fly 22 miles in 2 hours, and 55 miles in 5 hours. Write an expression to

sineoko [7]

Miles in 2 hours = 22
Rate of distance = 22/2
= 11 miles/hour

So miles in h hours = 11h

Miles in 4 hours = 11 * 4
= 44 miles

Answer is
11h , 44 miles

3 0

3 years ago

Elena has 80 trading cards in her collection. If 15%

shepuryov [24]

The answer for the first one is 12. 15% of 80 is 12. The second one I can’t answer because it is not very clear and is cut off

3 0

3 years ago

Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion.

Nastasia [14]

C. the values can be added after making a conversion of units because they both measure length.

8 0

3 years ago

After heating up in a teapot, a cup of hot water is poured at a temperature of 204°F.

laila [671]

Answer:

Question 1: 0.081 min⁻¹

Question 2: 168ºF

Explanation:

The missing equation is:

$T=T_a+(T_0-T_a)e^{-kt}$

You are given:

Ta = the temperature surrounding the object = 73ºF
T₀ = the initial temperature of the object = 204ºF
t = 2.5 min
T after 2.5 min = 180ºF

Question 1: Find the the value of k.

Substitute the data into the equation and solve for k:

$180\º=73\º+(204\º-73\º)e^{-k\cdot 2.5min}\\ \\ 107\º=131\ºe^{-k\cdot 2.5min}\\\\-k\cdot 2.5min=\ln (107/131)\\\\k=0.081min^{-1}$

Question 2: Find the Fahrenheit temperature of the cup of water, to the nearest degree, after 4 minutes.

Subsititute into the formula and compute:

$T=73\ºF+(204\ºF-73\ºF)e^{-0.081min^{-1}\times 4min}\\ \\ T=73\ºF+(131\ºF)(0.72325024)\\\\T=168\ºF$

4 0

3 years ago