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adoni [48]
4 years ago
10

5x - 2y = 15 ,2x + 4y = 12 solve the system

Mathematics
1 answer:
Rus_ich [418]4 years ago
5 0

Answer:

y = 5/2x - 15/2, y = -1/2x +3

Step-by-step explanation:

Slope intercept formula (y=mx+b)

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Consider two identical iron nails: one nail is heated to 95 °c, the other is cooled to 15 °c. the two nails are placed in a coff
Angelina_Jolie [31]
The heat released or absorbed by a substance is calculated through the equation,
     H = mcpdT

where H is teh heat,
   m is the mass,
  Cp is the specific heat, and 
  dT is the temperature difference

In this item, since both nails are identical, m and cp for both nails are equal such that the equation can be expressed as,
    mcp(95 - x) = mcp(x - 15)

where x is the final temperature. Solving for the value of x from the equation derived above will give us a final answer of 55 degrees C. 

Answer: 55°


3 0
3 years ago
ZE and ZF are vertical angles with mZE = 8x + 8 and mZF = 2x +38.<br> What is the value of x?
Dovator [93]

Answer:

Since ZE and ZF are vertical angles, they are congruent.

8x+8 = 2x+38

8 = 2x-8x+38

8 = -6x+38

8-38 = -6x

-30 = -6x

x = -30/-6

x = 5

7 0
3 years ago
Read 2 more answers
How do I answer this question?
gavmur [86]
This question answered is corect

3 0
3 years ago
Marcus spends $58 at the bookstore. He spends the same amount of money on each of the 4 books he purchase. He also paid $4 in sa
Marat540 [252]

Answer:

$15.5

Step-by-step explanation:

58+4=62 62divided by4=15.5 :) Have a nice day

8 0
3 years ago
Pls help..................................
earnstyle [38]

Answer:

35/4

Step-by-step explanation:

Because these are corresponding angles,

4x + 10 = 8x - 25

4x = 35

x = 35/4

6 0
3 years ago
Read 2 more answers
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