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astra-53 [7]
3 years ago
5

Consider the problem: After charging for 1/3 of an hour, a phone is at 2/5 of its full power. How long will it take the phone to

charge completely? Decide whether each equation can represent the situation.

Mathematics
2 answers:
prisoha [69]3 years ago
5 0

Answer:

Equation 2

is the answer

Step-by-step explanation:

Alinara [238K]3 years ago
4 0

To calculate the time for a full charge, you would divide the time already charged by the amount of charge:

1/3 / 2/5 = 1/3 x 5/2 = 5/6 of an hour for full charge.

You could use 2 and 4 to find the time.

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Over a period of 12 weeks, Carlos ran an average of 21 miles per week. How many kilometers is this? Round your answer to the nea
velikii [3]

Answer:

405.80

Step-by-step explanation:

So, we know Carlos ran 21 miles per week, for 12 weeks....

That makes 21 mi/wk x 12 weeks = 252 miles.

Then we know each km is 0.621 mile.

So, we divide 252 miles by 0.621 mile/km to get= 405.80 km

Dividing miles by miles/km gives us the unit we want (km).

<u>There was a trap in this question,</u> because if instead of dividing the 252 miles by 0.621 you would have multiplied it, you would have gotten another answer listed... just not the right one. :-)

5 0
3 years ago
In the era just prior to the Reformation, which of the following is true about the Catholic Church?
vovikov84 [41]
The answer is That it had a peaceful relationship with the protestants
3 0
3 years ago
Read 2 more answers
Please help I would be very greatful. On a coordinate plane, a solid straight line has a positive slope and goes through (0, 0.2
Vlad1618 [11]

Answer:

Step-by-step explanation:

Hi

7 0
3 years ago
Let v1=(3,5) and v2=(-4,7) Compute the unit vectors in the direction of |v1| and |v2|?
AleksandrR [38]
By definition, the unit vector of v = (a,b) is
\hat{v} =  \frac{\vec{v}}{|v|}

Therefore,
The unit vector of v₁ = (3,5) in the direction of |v₁| s
 (3,5)/√[3² + 5²]
= (3,5)/√34

The unit vector of v₂ in the direction of |v₂| is
(-4,7)/√[(-4)² + 7²]
= (-4,7)/√65

Answer:
The unit vector of v₁ in the direction of |v₁} is ( \frac{3}{\sqrt{34}} ,  \frac{5}{\sqrt{34}} )
The unit vector of v₂ in the directin of |v₂| is
( \frac{-4}{\sqrt{65}} , \frac{7}{\sqrt{65}} )

6 0
3 years ago
Order these numbers from least to greatest. −3.12 , −3.2 , 8 , −5216
trapecia [35]
From the least to the greatest.

The one with the biggest size and has a negative sign is the least

-5216, -3.2, -3.12, 8
8 0
3 years ago
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