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
Xelga [282]
3 years ago
11

Solve for y 3x+4y=20

Mathematics
2 answers:
Virty [35]3 years ago
7 0

Step-by-step explanation:

Given,

3x + 4y = 20

3x + 4y = 20 \\ y =  \frac{20 - 3x}{4}  \\ y = 5 - 3x

hope this answer helps you dear!

Mamont248 [21]3 years ago
3 0

Answer:

y = 5 - 3x/4    

yup

You might be interested in
Ysidra paints a room that has 400 square feet of wall space in 2 and a half hours. at this rate, how long will it take her to pa
Pie
1 hour 10 minutes /////
5 0
3 years ago
The pressure and volume of an expanding gas are related by the formula PV^b=C, where b and C are constants (this holds in adiaba
bazaltina [42]

The dP/dt of the adiabatic expansion is -42/11 kPa/min

<h3>How to calculate dP/dt in an adiabatic expansion?</h3>

An adiabatic process is a process in which there is no exchange of heat from the system to its surrounding neither during expansion nor during compression

Given b=1.5, P=7 kPa, V=110 cm³, and dV/dt=40 cm³/min

PVᵇ = C

Taking logs of both sides gives:

ln P + b ln V = ln C

Taking partial derivatives gives:

\frac{1}{P}\frac{∂P}{∂t}  + \frac{b}{V}\frac{∂V}{∂t} = 0

Substitutituting the values b, P, V and dV/dt into the derivative above:

1/7 x dP/dt +  1.5/110 x 40 = 0

1/7 x dP/dt +  6/11 = 0

1/7 x dP/dt = - 6/11

dP/dt = - 6/11 x 7

dP/dt = -42/11 kPa/min

Therefore, the value of  dP/dt is -42/11 kPa/min

Learn more about adiabatic expansion on:

brainly.com/question/6966596

#SPJ1

4 0
1 year ago
3. Sam and Tim each have savings accounts. Every month they each put in some of their
Setler [38]

Answer:

y = 30x +50 --- Sam

y = 20x +80 --- Tim

Step-by-step explanation:

Given

Sam                         Tim

х  --- f(x) ---------------  g(x)

1  --- 80   --------------- 100

2  --- 110  --------------- 120

3  --- 140 --------------- 140

4 --- 170 -------------- 160

Required

Determine the y value

y value implies the equation of the table

Calculating the equation of Sam

First, we need to take any corresponding values of x and y

(x_1,y_1) = (1,80)

(x_2,y_2) = (4,170)

Next, we calculate the slope (m)

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

m = \frac{170 - 80}{4 - 1}

m = \frac{90}{3}

m = 30

Next, we calculate the line equation using:

y - y_1=m(x-x_1)

y - 80 = 30(x - 1)

y - 80 = 30x - 30

Make y the subject

y = 30x - 30 + 80

y = 30x +50

Calculating the equation of Tim

First, we need to take any corresponding values of x and y

(x_1,y_1) = (1,100)

(x_2,y_2) = (4,160)

Next, we calculate the slope (m)

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

m = \frac{160 - 100}{4 - 1}

m = \frac{60}{3}

m = 20

Next, we calculate the line equation using:

y - y_1=m(x-x_1)

y - 100 = 20(x - 1)

y - 100 = 20x - 20

Make y the subject

y = 20x - 20+100

y = 20x +80

7 0
3 years ago
Explain why any rotation can be described by an angle between 0 degrees and 360 degrees
Oksanka [162]
Because if you rotate an object 360 degrees it’s like the object never moved because the object would still be in the same spot as if you didn’t move it
8 0
3 years ago
Brandon is in the school play. He has 10 lines. Each line takes 30 seconds to read. How many minutes will it take Brandon to rea
Vanyuwa [196]
B 5 minutes have a great day
7 0
3 years ago
Read 2 more answers
Other questions:
  • To find 36+29+14,Joshua rewrote the expression as 36+14+29 .what property did Joshua use to rewrite
    14·2 answers
  • Help me please!!!!
    5·1 answer
  • What is equivalent to 8a-7-29a-8<br> A. 65a+80<br> B. -21a-15<br> C. 3a<br> D. 37a+15
    9·1 answer
  • For 2 sweaters for that price what percent discount is that?
    13·1 answer
  • Aundrey is buying supplies for school. She buys a new calculator, some books and a notebook. The prices of the ideals are listed
    12·1 answer
  • Can anyone please help me solve this question!!!
    9·2 answers
  • 20 = x/4 - 13 help plz thank you
    15·2 answers
  • Which equation represents the line that passes<br> through the points (-5, 5) and (9, -3)?
    9·1 answer
  • Direct Variation
    8·2 answers
  • the scoop of an excavator holds 26 ft³of sand. if the capacity of a freight car is 39 tons of sand and we know that 1 ft³ of san
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!