Make x the subject of y=3x-2

Answers

Answer 1

Answer: To make x the subject of the equation
y
=
3
x
−
2
y=3x−2, you can isolate
x
x:

Start with the equation:
y
=
3
x
−
2
y=3x−2.
First, add 2 to both sides of the equation to isolate the term with
3
x
3x:
y
+
2
=
3
x
y+2=3x.
Finally, divide both sides by 3 to solve for
x
x:
x
=
y
+
2
3
x=
3
y+2

.
So,
x
x is the subject of the equation
y
=
3
x
−
2
y=3x−2, and it can be expressed as
x
=
y
+
2
3
x=
3
y+2

.

Answer 2

Answer:

Step-by-step explanation:

y = 3x-2 add '2' to both sides of the equation to get :

y+2 = 3x Now divide both sides by 3 to get :

(y+2)/3 = x Done.

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John is a runner. He runs the 100m sprint in 20.0 s. Calculate John's speed. Show your work!

Answers

Answer: John runs 5 m/s

Step-by-step explanation: Divide 100 by 20 and you get 5.

Also you are dividing the meters he runs by the seconds he runs.

DIFFERENTIAL EQUATIONS
Solve the differential equations.
dy = 4 − x
/
dx

Answers

anti derivative of 4 is 4x
anti derivative of -x is -1/2 x^2

so y = 4x - (1/2)x^2 + C
(can't forget constants when doing anti derivatives xD)

is this what you need?

*edit
Anti-derivative of a Constant [just a number] becomes (constant)*x
for example integral of 5 = 5x + C

Then there is a Power Rule for integrals
integral of (x)^n = 1/(n+1) *(x)^(n+1) + C
for example: integral of x^2 = 1/(2+1) * (x)^(2+1) + C = (1/3)*x^3 + C

We have dy/dx = (4-x) dx which is a first order linear ODE

dy = (4-x) dx. Now integrating both sides we get:

y = 4x - 1/2 x^2 + C

which is the answer. Note we only wrote +c once since we can combine arbitrary constants under addition and subtraction with each other.

5 books and 9 magazines cost $150.50 altogether. 9 books and 5 magazines cost $175.70. How much does 1 book and 1 magazine cost?

Answers

This Took A While To Do

Kyla measured the weight of a bunch of bananas as 1,100 grams using the scale.What is the margin of error?

A. 1,000 g to 1,200 g

B. 1,050 g to 1,150 g

C. 1,150 g to 1,200 g

D. 1,000 g to 2,000 g

Answers

Answer:

B. 1,050 g to 1,150 g

Step-by-step explanation:

Great question, it is always good to ask away and get rid of any doubts that you may be having.

Before we can find an answer for this question we should know what a margin of error is.

Margin of Error is the minimum amount of error allowed in a specific measurement. This exists because of the miscalculations that can happen.

Knowing the information above we can confidently say that the answer is B. 1,050 g to 1,150 g . This gives us a padding of error of 50 over and under the actual value of 1,100 grams

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

B, because thats 50 grams either direction of the given weight.

What is y?

Enter your answer in the box

Answers

The answer is 97, because when you add up 42 and 55 you get 97. Then you subtract that by 180 because a triangles angles add up to 180. 180-97=83. Z=83. Z and y are supplementary to eachother, so therefore 180-83= 97. Supplementary means they add up to 180.

Can any one tell me how to do this problem?

Answers

(1/2)/2=3/x
we can cross multiply, aka multiply both sides by 2x
(1/2)x=2*3
(1/2)x=6
times 2/1 both sides
x=12

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