solve for x
7(x - 3) = 4(x + 5)

Answers

Answer 1
1: expand the bracket by multiplying the 7(x-3) and 4(x+5)
2:take away the smallest x, which is 4x
then you’re left with
3x-21=20
3: add the -21 to the other side of = sign
you’re left with 3x=41
4: divide by 3
5: x=13.6667

Related Questions

hannah and mallory are selling boxes of cookies for a school fundraiser. each box costs the same amount. hannah sells 14 boxes. mallory sells 22 boxes. mallory's neighbor makes a $6 donation without buying any cookies. together, hannah and mallory raise $141. write ans solve an equation to find out how much each box of cookies costs. how much does hannah raise? how much does mallory raise?

Answers

The cost per box of cookies is $3.75

The total amount Hannah raised from the sales of cookies is $52.50

The total amount Mallory raised from the sales of cookies and donations is $88.50

In order to determine the cost per box of cookies, take the following steps:

The first step is to determine the total sum of the boxes sold by Hannah and Mallory

Sum of the boxes sold = 14 + 22 = 36 boxes

36 boxes were sold by Hannah and Mallory

The second step is to determine the total cost of the 36 boxes sold.

Total cost of 36 boxes = total amount raised - donation

$141 - $6 = $135

The third step is to determine the total cost of each box

cost of one box = total cost of 36 boxes / total number of boxes

135 / 36 = $3.75

The total amount Hannah raised = cost per box x number of boxes she sold

14 x $3.75 = $52.50

The total amount Mallory raised = amount raised from the sale of cookies + donation

amount raised from sales = cost per box x number of boxes she sold

22 x $3.75 = $82.50

Total amount = $82.50 + $6 = $88.50

A similar question was answered here: https://brainly.com/question/10915476?referrer=searchResults

The Scientific Method Which of these is the best reason for doing more background research after making an observation and before forming a hypothesis? to find the answer without having to do an experiment to prevent making the same mistakes made in a prior experiment to fill the space in your lab report to make your data agree with prior experiments

Answers

Answer:

Step-by-step explanation:

The best reason for doing more background research after making an observation and before forming a hypothesis is to prevent making the same mistakes made in a prior experiment. It is to make sure that you are able to see the problems of a research and make an experimental design that will minimize the errors?

Bank account A starts with $5,000 and grows by $1,000 each week. Bank account B starts with $1 and doubles each week.
1.which account has more money after one week?After two weeks?

Answers

Answer:

A

Step-by-step explanation:

If bank A keeps adding on 1,000 and bank B is only doubling by 2 then A is much greater than B.

The account that has more money after one week is account A.

The account that has more money after two weeks is account A

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Account A:

Balance = $5000

Each week increase = $1000

Amount after one week.

= 5000 + 1000

= 6000

Amount after 2 weeks.

= 6000 + 1000

= 7000

Account B:

Balance = $1

Each week's increase = doubles the amount

Amount after 1 week.

= $2

Amount after 2 weeks.

= $4

Thus,

Account A has more money after one week.

Account A has more money after two weeks.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

How much will nick and Adam weigh?

Answers

181 because when you solve it that is what you get

Answer:

181 pounds

Step-by-step explanation:

You have already got the equation and solution which is great! The next step is simply a matter of replacing "x" with "7", because you know x=7.

After doing this, you will be left with the equation 160+3*7=195-2*7. We will look at the first part of the equation first. Using the rules of BIDMAS, you can calculate 3*7=21 and then 160+21=181. 181 is your final answer.

You can check that this is right by calculating the second part of the equation, and once done you should be left with 181. Again, using BIDMAS, you need to do 2*7=14 then 195-14=181. Now we know that everything is correct.

what's the answer to
-12(d-5)-29=43​

Answers

Answer:

d=-1

Step-by-step explanation:

The answer would be d = -1

Evaluate the expression. −2(12−2(−4))2 What is the value of the expression? Enter your answer in the box.

Answers

Answer:

160

Step-by-step explanation:

the answer is -800 ______________________

❗25 POINTS❗ ...................................................

Answers

Answer:

22

Step-by-step explanation:

Enter the number
10.333333333333
rounded to the nearest hundredth (two decimal places):

Answers

Answer:

Step-by-step explanation:

This decimal rounded to the nearest 1/100 is 10.33 The next 3 in the 1/1000 place, is not large enough to influence the 3 in the hundredth place.

So the answer is 10.33

Answer please! branliest

Answers

Answer: 8p + -4p = 2p + 6

Combine like terms: 8p + -4p = 4p

4p = 2p + 6

Reorder the terms:

4p = 6 + 2p

Solving

4p = 6 + 2p

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-2p' to each side of the equation.

4p + -2p = 6 + 2p + -2p

Combine like terms: 4p + -2p = 2p

2p = 6 + 2p + -2p

Combine like terms: 2p + -2p = 0

2p = 6 + 0

2p = 6

Divide each side by '2'.

p = 3

Simplifying

p = 3

Step-by-step explanation: If this help u hit me up, but if it don't u wont have to. u feel me

8p-4p=2p+64p=2p+64p-2p=62p=6p=6/2p=3

What is the value of the expression 4(80+ b) – 12, where b = 20?
-
328
3.352
c388
D. 412


Answers

4(80+b)-12 b=20= 4(80+20)-12= 4(100)-12= 400-12= 388option c is the right answer

please mark this answer as brainlist

Josiah has 47 toy cars. If he organizes them in groups of 9 how many toy cars will be in the final group

Answers

Answer:

He Will Be Left With 2 Toy Cars

Step-by-step explanation:

Because 5 x 9 = 45

So 47 - 45 = 2

I’ll give BRAINLIEST pls help

Answers

Answer: EQUATIONS OF HORIZONTAL AND VERTICAL LINES. In general, linear equation is a function whose graph is a straight line and it is typically written as. y = mx + b, where m is the slope and b is the y-intercept. An horizontal lines goes left and right and its equation is in the form of. y = b,

Step-by-step explanation:

Georgina cooked a 10 1/5 pound turkey in 2 3/5 hours. How many hours per pound did it take to cook the
turkey? Express and explain your answer as a unit rate.

Answers

13/51 hours per pound

EXPLANATION

= 2 3/5 hours : 10 1/5 pound

= 13/5 hours : 51/5 pound

= 13/5 × 5/51 hours per pound

= 65/255 hours per pound

= 13/51 hours per pound

#LearnWithEXO

Are the two lines parallel, perpendicular,
or neither?
y = 3x -4 and 3x +9y = 18

Answers

they are parallel. if the slopes are the same and the y intercept is different they are parallel

Prerequisites :-

1) The product of slope of two perpendicular lines is-1 .

2) The slope of two parallel lines is same .

Given two lines to us are ,

[tex] y = 3x - 4 [/tex]

This line is in slope intercept form which is [tex] y = mx + c [/tex] . Comparing to which we get ,

[tex] m_1 = 3 [/tex]

Again , the second line given to us is ,

[tex] 3x + 9y = 18 [/tex]

Convert it into slope intercept form , we have ,

[tex]\implies 3( x + 3y ) = 18 [/tex]

Divide both sides by 3 ,

[tex]\implies x + 3y = 6 [/tex]

Solve for y ,

[tex]\implies y = \dfrac{-x}{3} + 2 [/tex]

On comparing to the slope intercept form ,

[tex] m_2 = \dfrac{-1}{3}[/tex]

And the product both the slopes is ,

[tex]\implies m_1 \times m_2 = \dfrac{-1}{3}\times 3 =\boxed{\red{-1}}[/tex]

Hence the given two lines are perpendicular .

Find the value of the trigonometric ratio.

Answers

Answer:

SOHCAHTOA

cosA= adjacent

hypotunuese

cosA= 30

34

cosA= 30:34

cosA= 15:17

1.
Find the slope and intercepts of 3x + 4y = 12. Sketch a graph.

Answers

The slope of 3x + 4y = 12 is m = -3/4

To get the slope, you must use the slope-intercept form y = mx + b to find the slope.

The x-intercept of 3x + 4y = 12 are located at: (4,0)

To find the x-intercept, you must substitute in 0 for y and solve for x.

The y-intercept of 3x + 4y = 12 are located at: (0,3)

To find the y-intercept, you must substitute in 0 for x and solve for y.

Please view the graph attached below that has the slope and intercepts of 3x + 4y = 12 sketched.

:)

Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y = -3x +7

Step-by-step explanation:

how is this college level ?


A jar contains 2000 marbles. If 61.5% of them are red, 27.5% are white, and 10% of them are blue, how many marbles are neither red, white, or blue?

Answers

Answer:

1 percent, or 20 marbles

Step-by-step explanation:

add all the other percentages and it sums up to 99%. and the other one percent of the marbles is 20.

Answer:

20 marbles

Step-by-step explanation:

61.5 + 27.5 + 10 = 99

this means 1% are neither red, white or blue

1% of 2000 is 20

You hike 1.2 miles west from a trailhead and then receive a text from a friend. She
is.x miles west of the trailhead. You hike to meet her, and then you both hike back
to where you left off on the trail. You hiked 2.7 miles in total. Formulate an absolute
value equation to represent this situation,

Answers

Answer:

the answer is definitely 4

Y=arccos(1/x)

Please help me do them all! I don’t know derivatives :(

Answers

Answer:

[tex]f(x) = {sec}^{ - 1} x \\ let \: y = {sec}^{ - 1} x \rightarrow \: x = sec \: y\\ \frac{dx}{dx} = \frac{d(sec \: y)}{dx} \\ 1 = \frac{d(sec \: y)}{dx} \times \frac{dy}{dy} \\ 1 = \frac{d(sec \: y)}{dy} \times \frac{dy}{dx} \\1 = tan \: y.sec \: y. \frac{dy}{dx} \\ \frac{dy}{dx} = \frac{1}{tan \: y.sec \: y} \\ \frac{dy}{dx} = \frac{1}{ \sqrt{( {sec}^{2} \: y - 1}) .sec \: y} \\ \frac{dy}{dx} = \frac{1}{ |x | \sqrt{ {x }^{2} - 1} } \\ \therefore \frac{d( {sec}^{ - 1}x) }{dx} = \frac{1}{ |x | \sqrt{ {x }^{2} - 1} } \\ \frac{d( {sec}^{ - 1}5x) }{dx} = \frac{1}{ |5x | \sqrt{25 {x }^{2} - 1} }\\\\y=arccos(\frac{1}{x})\Rightarrow cosy=\frac{1}{x}\\x=secy\Rightarrow y=arcsecx\\\therefore \frac{d( {sec}^{ - 1}x) }{dx} = \frac{1}{ |x | \sqrt{ {x }^{2} - 1} }[/tex]

b. One room is 8 ft wide and 12 ft long.
Another room is 9 ft wide and 15 ft
long. What is the difference in area?

Answers

Answer:

12-8

15-9

Step-by-step explanation:

graph this linear equation

y-2=4(x-1)

Answers

x= 0,1

y= -2,2

Slope 4

Y-Intercept (0,-2)

Which of the following sets of ordered pairs would be
function? (select all that apply)
(-2,-4).(-2,5), (1,7), (4,0)
(3,5).(-5,2), (2,5), (1.4)
(-5,1),(4,3), (-6,0).(-5,-2)
(4,5).(-1,-4), (1,3), (-2,6)

Answers

I think it’s D, cuz the numbers don’t repeat in that one but they do in everything else

Answer:

B & D his answer to the problem

Perform the indicated operation. Reduce to lowest terms if possible.
2 1/2 x 2 1/3

Answers

Answer:

Step-by-step explanation:

Convert mixed fraction to improper fraction.

[tex]2\dfrac{1}{2}*2\dfrac{1}{3}=\dfrac{5}{2}*\dfrac{7}{3}=\dfrac{5*7}{2*3}\\\\=\dfrac{35}{6}=5\dfrac{5}{6}[/tex]

Last month, 3,477 people visited the zoo. This month, 2,941 people visited the zoo.

How many more people visited the zoo last month than visited this month?

Answers

Answer:

536 people

Step-by-step explanation:

3477-2941=536

Answer:

536 more visitors visited the zoo last month this month.

Step-by-step explanation:

just subtract

what value of x makes the following equation true?​

Answers

Answer:

12

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

Hope this helps! :D

Mary cut a square piece of fabric with an area of 40 square feet. Which expression could be used to find the side length of the fabric?

Answers

Answer:

L = 6.3 or 6.4

Step-by-step explanation:

Just do the square root of 40, which is 6.3 or 6.4 (but I think 6.4 is a better answer)

Find the greatest common factor (GCF) of 68 and 76.
A. 4
B. 6
C. 8
D. 2

Answers

Answer:

Its A

Step-by-step explanation:

Answer:

A. 4

Step-by-step explanation:

Help me answer these questions

Answers

Answer:

Explanation below

Step-by-step explanation:

3. 46

4. 66

5. 30

6. 75

7. 18

8. 24

9. 33

10. 60

11. 16

12. 45

Write the scale without units: 1 mm:92 cm

Answers

Answer:

1:92

Step-by-step explanation:

that's how you write scale

pls mark brainliest

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