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QveST [7]
3 years ago
14

5. A total of 65.0 kilojoules of heat are absorbed as 58,3 g of lead is heated from 12.0°C to

Mathematics
1 answer:
vova2212 [387]3 years ago
3 0
The specific heat is 34°C
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How do I find these equations using substitution y=-3x+5 and 5x-4y=-3 ?
lapo4ka [179]

Answer:

x=1

Step-by-step explanation:

you would change it to 5x-4(-3x+5)=-3, because you put the info for the first equation into the second equation.

5x-4(-3x+5)=-3

5x+12x-20=-3

17x-20=-3

17x=17

x=1

6 0
3 years ago
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On Thursday, a website received x advertisement orders. On Friday, the website received 8 more advertisement orders than on Thur
gladu [14]

Answer:

2x+8

Step-by-step explanation:

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3 years ago
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This map shows the location of mice in the maze.
Alekssandra [29.7K]
On point (5,1) Fam......................
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3 years ago
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Victor was having a hard time deciding which new vehicle he should buy. He decided to make the final decision based on the gas e
Amanda [17]

Answer:

Victor should buy Legend because it has a better unit rate

<em></em>

Step-by-step explanation:

See attachment for complete question.

To determine which car has more gas efficiency, we have to calculate the slope of each car.

Vehicle 1: Legend

Take any two corresponding points from the table

(x_1,y_1) = (4,72)

(x_2,y_2) = (12,216)

The slope is then calculated using;

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{216 - 72}{12 - 4}

m = \frac{144}{8}

m = 18

<em>This implies that this vehicle (legend) travels 18 miles per gallon of gas</em>

Vehicle 2: Supreme

Take any two corresponding points from the graph

(x_1,y_1) = (0,0)

(x_2,y_2) = (15,250)

The slope is then calculated using;

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{250 - 0}{15 - 0}

m = \frac{250}{15}

m = 16.7

This implies that this vehicle (supreme) travels 16.7 miles per gallon of gas

<em>Base on the calculations above, Victor should buy Legend because it has a better unit rate</em>

6 0
2 years ago
Jon sold 3/4 of his books and purchased 3 more. If Jon has 11 books now how many books did he have to begin with?
slava [35]
I hope this helps you



begin jons all book 4a


sold 4a.3/4=3a


remaining book 4a-3a=a

3 purcased book a+3=11

a=8


4a=4.8=32 jons all book
5 0
3 years ago
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