Mathematics High School

What value of x makes this equation true?
3(x + 4) = 7x - 18
O x = 5
O x = 4.5
O x = 34.5
0 x = 75.

Answers

Answer 1

Answer:

x = 15/2 or x = 7.5

Step-by-step explanation:

Step 1: Write equation

3(x + 4) = 7x - 18

Step 2: Solve for x

Distribute 3: 3x + 12 = 7x - 18

Subtract 3x on both sides: 12 = 4x - 18

Add 18 on both sides: 30 = 4x

Divide both sides by 4: x = 15/2 or x = 7.5

Related Questions

Yo someone please help me out

Answers

Since we know sin^2 θ = (sin θ)^2

In our problem,

sinθ = 2/sqrt(3)

Let's plug this value into our expression above.

(2/sqrt(3))^2

Let's square both terms individually.

2^2 = 4

(sqrt(3))^2 = 3

The final answer = 4/3

There are 18 boys in a class of 30 students. What percentage of the class is boys

Answers

Answer:

60%

Step-by-step explanation:

18 / 30 = 0.6, which is 60%

Answer:

60% are boys and 40 % are girls

Step-by-step explanation:

HELP!!!Find the measures for angles A and B. Show your work. A. m∠A=44° m∠B=54° B. m∠A=44° m∠B=46° c. m∠A=25° m∠B=75°

Answers

Answer: I think B is answer to ur question

Step-by-step explanation:

f(x)=x2+1
g(x)=2x-5
Find f(x)-g(x)

Answers

Answer:

Step-by-step explanation:

x^2 + 1 -2x + 5

x^2 - 2x + 6

Victoria is going to use a computer at an internet cafe. The cafe charges an initial fee to use the computer and then an additional price per minute of usage. It is known that the total charge to use a computer for 5 minutes would be $6 and that the additional rate per minute of use is $0.60. Write an equation for C,C, in terms of t,t, representing the total cost of using a computer for tt minutes at the internet cafe.

Answers

           

Step-by-step explanation:

Given that the initial charge/fee for the first 5 minutes is $6

and also the additional rate per minutes is $0.6

we can model the total charges after the equation of a straight

that y= mx+c

now using the required notation

C= 0.6t+ 6

comparing this with the equation of a straight line

the constant term c is $6 flat rate for the first 5 minutes

the gradient 0.6 is m

the dependent variable x is t

and the cost C is y  

Answer:

i believe its c=0.60t+3

Step-by-step explanation:

please help!! first answer will get brainiest!! evaluate m*p if m= -150 and p= -15

Answers

Answer:

2,250

Step-by-step explanation:

negative times a negative equals a positive.

Answer:

-150-15= - - =+ so,-150-15=165

-

Help me please ASAP!! :(

Answers

Answer:

m= -1/7  (slope)

b= -1 (y inter)

Step-by-step explanation:

Solve for x : x/8 = 8
Quickly !

Answers

The answer is [tex]x=64[/tex]

The first and last step is to multiply both sides by 8

[tex](\frac{x}{8} )(8)=8*8[/tex]

Multiplying [tex]\frac{x}{8}[/tex] by [tex]8[/tex] makes x by itself and 8*8 is 64

[tex]x=64[/tex]

Which equation correctly represents how this area model should be used? A) 500 + 140 + 160 + 50 = 850 B) 500 + 140 + 160 + 160 = 960 C) 600 + 160 + 150 + 40 = 950 D) 600 + 160 + 60 + 40 = 860 i neeeddd hhhhellllppppp

Answers

Answer:

Step-by-step explanation:

−9+ p =12 rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Answers

Answer:

Add 9 to both sides of the equation.

p=12r+9

Step-by-step explanation:

The answer is 21.

Have a good day!

The table shows the maximum and minimum depths of two submarines. Find the range of depths for each submarine. Then determine which submarine has the greater range of depths.

Submarine A Submarine B
Minimum Depth −146 ft −194 ft
Maximum Depth −532 ft −621 ft

Answers

Answer:

Range A = 386ft

Range B = 427ft

B has the larger range.

Explanation:

To find the range, find the difference between the minimum and maximum depths for each submarine. Remember that your answer will be positive.

Sub A:

-146ft - (-532ft) = 386 ft

Sub B:

-194ft - (-621ft) = 427 ft

Submarine B has a larger range.

ANSWER ASAP PLEASE. TAKE YOUR TIME TO DETERMINE IT. IT CAN HAVE MORE THAN 1 ANSWER.

1.) -7

A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer

2.) -√81


A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer

3.) 8.444....


A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer

4.) 9/10


A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer

5.) √42


A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer

Answers

Answer:

1.) -7

A. Rational

B. Irrational

C. Natural

D. Whole

E. Integer

2.) -√81

A. Rational

B. Irrational

C. Natural

D. Whole

E. Integer

3.) 8.444....

A. Rational

B. Irrational

C. Natural

D. Whole

E. Integer

4.) 9/10

A. Rational

B. Irrational

C. Natural

D. Whole

E. Integer

5.) √42

A. Rational

B. Irrational

C. Natural

D. Whole

E. Integer

Solve: 2/x + 3/2x - 1/2 = 2/3

Answers

Answer:

Step-by-step explanation:

[tex]\frac{2}{x}+\frac{3}{2x}-\frac{1}{2}=\frac{2}{3}\\multiply ~by~6x\\12+9-3x=4x\\21=4x+3x\\7x=21\\x=21/7=3[/tex]

A diver descends 90 feet in 5 minutes. What is the
diver's change in depth per minute?

Answers

90/5 would be 18 because you need to find the depth per minute. So you divide 5 by 5 and then 90 by 5. 18 feet per minute

Answer:

18 feet/min

Step-by-step explanation:

Divide 90/5 to find the diver's change in depth per minute 18 feet per minute is the answer

A(5,0) and B(-1, 4) Find the length of the segment. Round to the nearest tenth of a unit.

Answers

Hey there! I'm happy to help!

Here's how to find the distance between any two points.

Subtract the x values.

5-(-1)=5+1=6

Square that.

6²=36

Subtract the y values.

0-4=-4

Square that.

-4²=16

Add the two numbers you got.

36+16=52

And square root it.

√52≈7.2.

Have a wonderful day! :D

!!25 POINTS!!
Name Y Z two other ways.

Answers

Answer:

Step-by-step explanation:

would it be C.

Y, Z

PLEASE HELP I WILL MARK YOU BRAINLIEST.

Gabriel brought a 24 pack of Dr.pepper.He spent a total of $7.92 on a soda after tax was included. He paid $0.96 in tax. How much did each individual can of soda cost in the 24 pack before the tax was included?

Answers

Answer:

0.29 per soda before tax

Step-by-step explanation:

subtract the tax then divide by the number of cans of soda, thats how i got my answer! hope this helps!

. A certain tap can fill a tank in 4 hours and
another tap can fill it in 6 hours. If both the taps
are opened, how long will it take for the tank to
be full?​

Answers

Answer:

Given -

Time taken by first tap = 4 hours.Time taken by second tap = 6 hours.

Now, we'll calculate the work done by both the taps -

[tex] \\ \sf \: \frac{1}{4} + \frac{1}{6} \\ \\ \\ \bf \: lcm \: \: of \: \: 4 \: \: \& \: \: 6 = 12 \\ \\ \\ \implies \sf \: \frac{3 + 2}{12} \\ \\ \\ \implies \sf \frac{5}{12} \\ \\ [/tex]

Now, reciprocal it -

[tex] \\ \implies \sf \frac{12}{5} = 2 \frac{2}{5} \\ [/tex]

Therefore, time taken by both the taps will be 2 2/5 hours.

Show how you would set up and equation to solve for x. Then use your answer for x to find the measure of each angle! Rest is in pic

Answers

I hope this helps. If you have any questions as to why they equal each other or why we used 180 just ask

approximate each irrational number to the nearest hundreth √59

Answers

The answer will be 7.68

If these numbers represent temperatures in degrees Celsius, the coldest is
?
7, -3, 1/2, -0.8, 0.8,
-2,-1/10

Answers

Answer:

-3

Step-by-step explanation:

it is the smallest number on a number line which is kind of what a thermometer is

Answer:

It is -3 because I took the assignment test.

Step-by-step explanation:

The person who answered the question before me is correct.

Find the value of x, if x=3/4
1.2(x)+23=156
2.7(x)-45=383
what is the value of x​

Answers

Answer:

he actually looks like a bu to the back of your head and you have to stilud and I think your deadly weapon is a ps4 controller or an official at the lot

I hope this will help

A submarine is submerged to a depth
of 650 feet below sea level. It ascends
225 feet and then dives 50 feet.
Write an expression that represents the
new position of the submarine.

Answers

Answer:

-650 + 225 = -425         -425 - -50 = 475 feet

Step-by-step explanation:

5^6/5^2
Which of the following expressions is equal to
?
52
O 5.5.5
1
5.5.5.5
5.5.5.5
3

Answers

Answer:

3

Step-by-step explanation:

5 by 6 is 30 divided by 5 by 2

WILL GIVE BRAINLIEST!!!
1. 3a -4a -5a
2. -7a + a - 2a
3. - 8a + 4a -a
4. -2a -2a + 3a
5. -2a + 2a - 3a
6. -6a + 3b - 4c -8 + a -3b -4c + 4

Answers

Answer:

1. -6a

2. -8a

3. -5a

4. -a

5. -3a

6. -6a -8c -4

Step-by-step explanation:

All you need to do is combine like terms

Diego says the constant of proportionality is 550 Andrew say is the constant of proportionality is 9 1/6 do you agree with either of them explain your reason

Answers

Answer:

The question is incomplete. The complete question is :

A plane traveling at a constant speed flew over Pittsburgh, Saint Louis, Albuquerque, and Phoenix on its way from New York to San Diego.

Complete the table as you answer the questions. Be prepared to explain your reasoning.

       segment                              time                     distance        speed

Pittsburgh to Saint Louis    1 hour                    550 miles  

Saint Louis to Albuquerque 1 hour 42 minutes  

Albuquerque to Phoenix                             330 miles  

Step-by-step explanation:

We can complete the table as :

  segment                              time                     distance        speed

Pittsburgh to Saint Louis    1 hour                   550 miles   550 miles/hour

Saint Louis to Albuquerque 1 hour 42 minutes    93.5 miles 550 miles/hour

Albuquerque to Phoenix   3/5 hour           330 miles 550 miles/hour

Since it is given in the question that the plane is flying in a constant speed from one place top another place.

So, it is maintaining the same speed to cover different distances for different time.

Thus the constant of proportionality is 550.

Between which two integers does -13/3 lie?
A -3 and 4
B -2 and -3
C -5 and 6
D -4 and -5​

Answers

Answer:

-4 and -5

Step-by-step explanation:

- 13/3 is equal to -4.3 so this is why i think this but it maybe wrong.

what is the place value of 2 in the number 34277​

Answers

Answer:

Hundreds

Step-by-step explanation:

Refer to the underlined numbers:

34277 - 7 is in the ones place

34277 - The second 7 is in the tens place

34277 - 2 is in the hundreds place

34277 - 4 is in the thousands place

34277 - 3 is in the ten thousands place

Answer:

hundreds

Step-by-step explanation:

What is the quotient of -20 and (-5)?

Answers

The answer to this would be 10

4

Step-by-step explanation:

Junior is saving money in his piggy bank. He starts with and adds two pennies each day. Create an table and a graph for the function for which represents the number of days since Junior started saving money and y represents the total money he has saved

Answers

You start with 0 then add two pennies (0.02) a day

The required expression for the Junior started saving money and y represents the total money he has saved is y =2x.

Given that,
Junior is saving money in his piggy bank. He starts with and adds two pennies each day.

What are functions?

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in set of y. x is the independent variable while Y is the dependent variable.

Let the number of days, junior saved money be x and the total amount of money he saved be y.
He starts with and adds two pennies each day. which implies,


On day 1 he saved 2 pennies, the next day i.e. day 2 is saved 4 pence and so on and on day x he saved a total of 2x pennies in his piggy bank. Results,
y = 2x

Thus, the required expression for the Junior started saving money and y represents the total money he has saved is y =2x.



Learn more about function here:

brainly.com/question/21145944

#SPJ2


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