how do i use the substitution method for these equations
y=3x+4
y=5x+12

Answers

Answer 1

Answer:

hello there mate

Step-by-step explanation:

Answer 2
Good day !
In this equation , you can solve the two equations directly .
You have been given the value of y In both cases.
So 3x+4=5x+12
=3x-5x=12-4
-2x=8
X=-4




Sorry if it’s incorrect!

Related Questions

Answer the question in the picture please

Answers

Answer: 1.23

Step-by-step explanation:

0.3*4.1=

Answer:

It is 1.23

Step-by-step explanation:

When multiplying decimals, multiply it as a whole number, and move the decimal to the left the amount of times it was in the problem.

i.e. .3 times 4.1

.3 has 1 number behind the decimal and 4.1 also has one number behind the answer. This means that you will move the decimal to the left twice in 123.0 to 1.23

A baseball is hit along the third base line with a speed of 100 ft/s. At what rate is the balls distance from first base changing when it crosses third base?

Answers

Solution :

From the triangle,

[tex]$x^2 = s^2 + 90^2$[/tex]

[tex]$x = \sqrt{s^2 + 90^2}$[/tex]

Now differentiating w.r.t "t", we get

[tex]$\frac{dx}{dt}=\frac{d}{dt}\left(s^2 +90^2 \right)^{1/2}$[/tex]

    [tex]$=\frac{1}{2}\left(s^2 + 90^2 \right)^{\frac{1}{2}-1} \cdot 2s \cdot \frac{ds}{dt}$[/tex]     [chain rule]

    [tex]$=\frac{1}{2}\left(s^2 + 90^2 \right)^{-\frac{1}{2}} \cdot 2s \cdot \frac{ds}{dt}$[/tex]

    [tex]$=\frac{s}{\left(s^2 + 90^2\right)^{\frac{1}{2}}} . \frac{ds}{dt}$[/tex]  

But given that [tex]$\frac{ds}{dt}$[/tex] = 100 ft/s

When all the ball crosses the third base, this means that s = 90. So substituting the value of s and [tex]$\frac{ds}{dt}$[/tex]  in [tex]$\frac{dx}{dt}$[/tex] , we get

[tex]$\frac{dx}{dt} = \frac{90}{\left(90^2 +90^2\right)^{1/2}} \times 100$[/tex]

[tex]$\frac{dx}{dt} = \frac{90}{\sqrt{8100+8100}} \times 100$[/tex]

[tex]$\frac{dx}{dt} = 50\sqrt2$[/tex]

    = 70.710 ft/s    

What expression is equivalent to -2x + 7

Answers

I think that’s the answer

Factor the expression.
2x + 8

Answers

Answer:

2x+8

2 is common

2(x+4)=0

Step-by-step explanation:

Which ratio does NOT represent this situation?
1 point
o
3:12
9:3
8:2
1:3

Answers

Answer:

1:3

Step-by-step explanation:

3:12 is the amount of shaded circles to all circles, 8:2 is basically the same thing as 3:12 and 9:3 is the amount of shaded circles to the amount of non-shaded circles.  1:3 wouldn't work because it is not the right ratio.

I will be marking you brainiest and give you 5 stars if you can answer this math question.

Christy is packing for her family’s vacation. She has 5 tops, 3 bottoms, and 2 pairs of shoes. Assuming she wears a top, a bottomless and a pair of shoes with each outfit, how many possible combinations can she make?

Answers

Answer:

8

Step-by-step explanation:

Simplify the expression in e^5

Answers

Answer:

Step-by-step explanation:

ok im not sure if this is it but 148.41315910

Answer:

148.4

Step-by-step explanation:

Dave and Sue share a pizza in the ratio 2:3.They eat it all.
a. What fraction of the pizza did Dave eat?
b. What fraction of the pizza did Sue eat?​

Answers

Answer:

a.5/2

b.5/3

because dave eat 2 of the pizza pices from 5 pices

and sue eats 3 of the pizza pices of 5

Subtract.

15 8/12−8 5/12

Answers

Answer:

158/12-85/12 equals this in a decimal 6.083333333

and in a factor it is 73/12

Step-by-step explanation:

HOPE I HELPED

3a^4b^-2c^3 simplifed

Answers

3a^4c^3/ b^2 is the equation simplified

What is the answer to
1. b+4=2b-5
2. -6-29=5x-7
3. 10h+12=8h+4
4. 7a-17=4a+1

Answers

Answer:

b=9

(assuming you meant -6x) x = -2

h = -4

a = 6

Step-by-step explanation:

Enter a value to balance the hanger

Answers

Answer:

Try 2.75 it should work

Step-by-step explanation:

prove me wrong

I need the answer please help me

Answers

Answer:

-29.988 or if you round up -30

Step-by-step explanation:

1) Convert fractions to decimals  

    3.6 x (-8.33) = -29.988

Answer:

I think its this but not sure


a) Rotation, then reflection
b) Translation, then rotation
c) Rotation, then translation
d) Translation, then reflection ​

Answers

D) translation, then reflection

Three pounds of bananas cost $7How much does 1 pound of bananas cost?

Answers

Answer:

Step-by-step explanation:

3 pounds:7 dollars

1 pound: 2.33 dollars

divide 3 by 3 to find 1. divide 7 by 3.

7/3=2.333 each pound of bananas will cost $2.33

Please help.... which ordered pair is NOT a solution to the inequality in the graph

Answers

Answer:

(5, 1) is the answer.

Step-by-step explanation:

This is because the point (5, 1) is NOT in the shaded area of the inequality. All the other points are either in the shaded area of the inequality, or on the line of the inequality equation.

Hope this helps!! :)

#teamtrees #WAP (Water And Plant)

Answer:

(5,1)

Step-by-step explanation:

Find the area of the shape.

Answers

Answer:

39.5 [tex]ft^{2}[/tex]

Step-by-step explanation:

We need to take this shape by shape

Top triangle

a = b*h/2

a = 3*2/2

a = 6/2

a = 3

__________________________________________________________

Bottom triangle:

a = b*h/2

a = 3*3/2

a = 9/2

a = 4.5

__________________________________________________________

Rectangle:

a = b*h

a = 8*4

a = 32

__________________________________________________________

Now add them all up

3 + 4.5 + 32 = 39.5

The area of the shape is 39.5 [tex]ft^{2}[/tex]

Hope this helped!

Which model represents the product 3/4 x 1/3

Answers

Answer:

The first one

Step-by-step explanation:

Lisa is on a trip of 1,515 miles. She has already traveled 225 miles. She has 3 days left in her trip. How many miles does she need to travel each day to complete the trip?
A.
655
B.
430
C.
1,290
D.
860

Answers

Answer:

b.430

Step-by-step explanation:

........The answer is B

Can someone help me do this it’s an emergency

Answers

That is so hard i was so confused

Raul sells fancy new TVs. They cost $600. He sells the TV for $900. What is his percent markup? show your work​

Answers

Answer:

His percent markup is 150%

Step-by-step explanation:

Sarah and $600 per week and spends 15% of earnings on transportation how much does Sarah Spain and transportation every week plz this is very important

Answers

Answer she spent 90$ so she should have 510 dollars left

Step-by-step explanation:

15% of 600 is 90. 90-600=510

510 he’s right hope it helps

help pls its iready ill give brainiest

Answers

c=2pi2
c=12.56

so the last one

Answer:

I think that it is the second one

Simplify the expression 7b + 7 + 5b – 5b + 2a – 12.
Show your work!

Answers

Answer:

2a+7b-5

Step-by-step explanation:

7b + 7 + 5b – 5b + 2a – 12

2a+7b+5b-5b+7-12

2a+7b-5

pls answer each correctly
and show the workings

Answers

Answer:

24)

[tex] \frac{4}{5} [/tex]

[tex]25) - \frac{4}{5} [/tex]

[tex]14)1[/tex]

15)19

16)5

17)3

18)5√5

19)8n²√2

Which letter is in the solution set for graph #1

Answers

Answer:

Its 50/50 with T or B I say the answer is B

Step-by-step explanation:

Will give brainliest if helpful!!!!! :)
Solve the following quadratic equation by factoring:
5r^2 = 80

Answers

Answer:

I hope this help

Step-by-step explanation:

I hope this help

Step-by-step explanation:

HOPE IT HELPS

HAVE A NICEE DAY

Jody works at an ice cream counter. The ice cream costs $3 per cone. Let c represent the number of ice cream cones she sells. Let p represent
the total cost paid by the customers.
Choose two correct statements about the variables in this situation,
A. The cost per cone depends on the number of cones sold.
B. The total cost paid by customers depends on the number of cones sold,
O c The number of cones sold is independent of the total cost paid by customers.
D. The total cost paid by customers is independent of the number of cones sold,

Answers

Answer:

B and C are correct Hope this helps <3

Step-by-step explanation:

Answer:

B and C?

Step-by-step explanation:

Im a little unsure about C but im about99% sure that is correct

Solving Inequalities, HELP PLEASE.!!
hjukhvfd816
11/03/2017
Mathematics
Middle School
answered
The Latino Rams at Englewood High school are seeking to raise at least $750 in a fundraiser to pay for their end-of-the year field trip to Islands of adventures.

Answers

Answer:

x ≥ $750

Step-by-step explanation:

please help asap I'll mark brainliest​

Answers

Answer: G

7/9 yd= 28 in

2.5ft = 30 in

2 2/3 ft= 32 in

33in = 33in

I hope this helps:

Other Questions
How could natural selection affect humans? Can you help me find x please white and informative essay about why or why not wearing school uniforms would be beneficial to students and school district Please answer all or what you can do PLZ ITS TIMED AND MY GRADE DEPENDS ON IT WILL MAKE BRAINLIST About 30% of imports that arrive in WashingtonO are transported elsewhere.O involve raw materials for services.O remain in the state.O are sent to Europe. PLEASE HELP I WILL AWARD BRAINLIESTWrite a linear function f with the given values. x f-4 -2-2 -10 0f =______?????? How to convert 0.231 to fraction evaluate: the crucifixion is less significant than the birth of jesus. (12 marks) Who was in charge of establishing the first federal court system? Write the coordinates of each image. Use the graph to help you out. Please select the word from the list that best fits the definitionthe art of folding paper PLSPLSPLS HELP ASAP a scientist discovers that the acidity of a lake increases overtime. at the same time, its population of Minnows grew smaller. when the adicity of the lake return to normal, The Minnow population recover. In what two ways can the minnow population be used to monitor the Lakes water quality? 3. A coil of 100 turns encloses an area of 100 cm2. It is placed at an angle of 700 with amagnetic field of 0.1 Wbm-2. What is the magnetic flux through the coil? If the magneticfield is reduced to zero in 10-3s, what emf is induced in the coil? 2) A person with hardened arteries willa) have great blood flowc)have low elasticity in their blood vesselsb) have a normal blood pressured) be a low risk for a heart attack since their blood vessels are strong Read the following excerpt from The Jungle Book by Rudyard Kipling."How little! How naked, andhow bold!" said Mother Wolf, softly. The baby was pushing his way between the cubs to get close to the warm hide. "Ahai! He is taking his meal with the others. And so this is a man's cub. Now, was there ever a wolf that could boast of a man's cub among her children?""I have heard now and again of such a thing, but never in our pack or in my time," said Father Wolf. "He is altogether without hair, and I could kill him with a touch of my foot. But see, he looks up and is not afraid."In this excerpt, how does the narrator characterize the wolves as caring individuals?by giving physical descriptions of the wolvesby showing the wolves inner thoughtsby showing how other characters feel about the wolvesby revealing the dialogue between the two wolves GIVING BRAINIEST!! ANSWER ASAP PLSWhen an object is dropped from a point above the ground the amount of time it takes to hit the ground is given by the equation [tex]t=\sqrt{\frac{2d}{9.8} }[/tex] where d is the distance above the ground, in meters, and t is given in seconds.If you need something to fall for exactly 1.5 seconds, how high should it be when it is dropped? Round your answer to the nearest tenth (one decimal place) maintaing a healthy weight reduces physical stress on the body William is throughout ever ready, but never hastyalways willing to wait when waiting seems the best policyalways ready to accept a nominal success when there is a chance of turning it into a real one, but never accepting nominal success as a cover for defeat, never losing an inch of ground without at once taking measures to recover it. By this means, he has in the former part of 1068 extended his dominion to the Land's End; before the end of the year he extends it to the Tees. In the next year he has indeed to win it back again; but he does win it back and more also. William is. A) resolute B) anxious C)popular D) ruthless List the sides in order from shortest to longest. The diagram is not to scale. Triangle upper J upper K upper L is shown. Angle upper J is labeled 45 degrees. Angle upper K is labeled 57 degrees. Angle upper L is labeled 78 degrees. A. Modifying above Upper L Upper K with bar, Modifying above upper L upper J with bar, line segment JK B. line segment JK,Modifying above Upper L Upper K with bar, Modifying above upper L upper J with bar C. line segment JK,Modifying above upper L upper J with bar, Modifying above Upper L Upper K with bar D. Modifying above Upper L Upper K with bar, line segment JK, Modifying above upper L upper J with bar I GIVEEE BRAINLI8LSTT C