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Nataliya [291]
3 years ago
11

The variable t represents the temperature at 6 p.m.

Mathematics
2 answers:
Nady [450]3 years ago
6 0
The answer is C, t-19=-12. This is because the temperature decreased from t by 19 degrees and ended up at -12 degrees. Hope this helped!
natta225 [31]3 years ago
4 0
The answer is C
hope it helped
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An ancient Chinese candle clock tells the amount of time that has passed by the amount of wax that has been melted off the candl
maxonik [38]

Answer:

Time = 560\ mins

Step-by-step explanation:

Given

Candles = 2 --- candles melted

Divisions = 12

Time = 4\ hrs --- time to melt

Required

The time since the first was lit

If 1 candle melts in 4 hours, 2 candles will melt in 8 hours.

i.e.

x = Candles * Time

x = 2 * 4hrs

x = 8hrs

For the 3rd candle that has melted, 4 inches

First, calculate the fraction that melt

Fraction = \frac{Melt}{Division}

Fraction = \frac{4}{12}

Fraction = \frac{1}{3}

The time to melt is:

y = Fraction * Time

y= 4 * \frac{1}{3}

y= \frac{4}{3}hrs

So, the required time is:

Time = x + y

Time = 8hrs + \frac{4}{3}hrs

Convert to minutes

Time = 8*60mins + \frac{4}{3}*60mins

Time = 480mins + 80mins

Time = 560\ mins

4 0
3 years ago
Are there any prime numbers that have a difference of 3
Schach [20]

Answer:

Step-by-step explanation:

Yes 2 and 5 are both prime numbers and have a difference of 3

3 0
3 years ago
Read 2 more answers
Evaluate the expression: 103​
avanturin [10]

Answer: 100+0+3

Step-by-step explanation:

7 0
3 years ago
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denis-greek [22]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
A newspaper and three hot chocolates cost $7. Two newspapers and two hot chocolates cost $6. How much does one hot chocolate cos
pochemuha

Answer:

the cost of one hot chocolate is $2.

Step-by-step explanation:

Let x be the hot chocolate cost and y be the newspaper cost.

Given:

A newspaper and three hot chocolates cost $7

So, the equation is

3x+y=7--------(1)

Two newspapers and two hot chocolates cost $6

So, the second equation is.

2x+2y=6---------(2)

Find one hot chocolate cost?

Solve equation 1 for y.

3x+y=7

y=7-3x

Put y value in equation 2

2x+2(7-3x)=6

2x+14-6x=6

14-4x=6

-4x=6-14

-4x=-8

negative sign is cancelled both side.

x=\frac{8}{4}

x=2

Therefore, the cost of one hot chocolate is $2.

3 0
3 years ago
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