1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Usimov [2.4K]
3 years ago
7

3x – 4y = 10 2x – 4y = 6 what is the value of y?

SAT
1 answer:
Lorico [155]3 years ago
3 0

3x- 4y=10

10÷1=10

Therefore y is equal to 10

You might be interested in
What is being honest​
Grace [21]

Answer:

to tell the truth and always be genuine

Explanation:

3 0
3 years ago
Read 2 more answers
Newton’s law of cooling states that for a cooling substance with initial temperature t0, the temperature t(t) after t minutes ca
antoniya [11.8K]

The cooling rate of the substance is approximately 0.0732.

According to the statement, the Newton's law of cooling is defined by the following formula:

T(t) = T_{s} + (T_{o}-T_{s})\cdot e^{-k\cdot t} (1)

Where:

  • T_{s} - Final temperature, in degrees Celsius.
  • T_{o} - Initial temperature, in degrees Celsius.
  • t - Time, in minutes.
  • k - Cooling rate, in \frac{1}{min}.
  • T(t) - Current temperature, in degrees Celsius.

Please notice that substance reaches thermal equilibrium when T(t) = T_{s}, that is when temperature of the substance is equal to the temperature of surrounding air.

If we know that T_{o} = 80\,^{\circ}C, t = 15\,min, T_{s} = 50\,^{\circ}C and T(15) = 60\,^{\circ}C, then the cooling rate of the substance is:

60 = 50 + (80 - 50)\cdot e^{-15\cdot k}

\frac{60-50}{80-50}= e^{-15\cdot k}

\frac{1}{3} = e^{-15\cdot k}

k = -\frac{1}{15}\cdot \ln \frac{1}{3}

k \approx 0.0732

The cooling rate of the substance is approximately 0.0732.

To learn more on Newton's law of cooling, we kindly invite to check this verified question: brainly.com/question/13748261

7 0
2 years ago
If you're found to be at fault in _____, your driver license will be canceled within 90 days unless you complete a 12-hour advan
Mashcka [7]
Answer:anything that the law does not allow you to do
4 0
3 years ago
In a two-digit number the tens digit is 1 more than the units digit. The number itself is 6 times the sum of the digits. Find th
notka56 [123]

Answer:

54

Explanation:
First write the list of numbers which the tens number is one less then ones place.(21,32,43,54,65,76,87,98). Remember this list then add the digits together. If you know your multiplication, the first 5 should be easy to solve so multiple the sum you received from adding the numbers by 6 until you get to one with the same starting number

(21)2+1= 3 x 6= 18

(32)3+2= 5 x 6= 30

(43)4+3= 7 x 6= 42

(54)5+4= 9 x 6= 54

(65)6+5=11

(76)7+6=13

(87)8+7= 15

(98)9+8 = 17

6 0
3 years ago
The farm where you just started working has a vertical cylindrical oil tank that is 2.5 feet across on the inside. The depth of
Eduardwww [97]

The answer is 73. 4 gallons im 100 percent

7 0
3 years ago
Read 2 more answers
Other questions:
  • Tchaikovsky's career as a composer was partly made possible because he had
    7·2 answers
  • How to add maths??? teacher gave question me to!:
    13·2 answers
  • Does anyone have any advice for the math section on the PERT?
    7·1 answer
  • Is this a good score on the sat test 680?
    5·2 answers
  • "Psychologists say having fun is a basic human need. Yet we’ve been taught that if you’re playing, you can’t be working. What ha
    15·1 answer
  • Look at the withholding table below. If you earn $426 in gross income every week and get to keep $348 of it after tax withholdin
    8·1 answer
  • Which of the following statements are true about checked and unchecked exceptions.
    10·1 answer
  • Raymond bought a car for $40, 000. He took a $20,000 loan from a bank at an interest rate of 15% per year for a 3-year period. W
    5·1 answer
  • client quietly paces in the ed waiting area with his hands on his hips and rubbing his mid-lower left side. he has a flat facial
    10·1 answer
  • Rana and Amira are getting ready to watch a meteor shower. Rana wonders how space rocks become meteors and meteorites. How can A
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!