first step in solving the equation 4x -8=7

Answers

Answer 1
the first step is to add 8 to both sides

Related Questions

What is an equation of the line that passes through the points (0,6)and (-5,2) ? Put
your answer in fully reduced form

Answers

Given that,

Points are (0,6) an (-5,2).

To find,

The equation of line that passes through the given points.

Solution,

We have, x₁ = 0, x₂ = -5, y₁ = 6 and y₂ =2

The equation of line can be calculated as :

[tex]y-y_1=m(x-x_1)\\\\y-6=\dfrac{2-6}{-5-0}(x-0)\\\\y-6=\dfrac{-4}{-5}x\\\\y-6=\dfrac{4}{5}x\\\\5y-30=4x\\\\5y-4x=30[/tex]

So, the required equation is 5y-4x=30.

What number does b stand for in this equation?
3b = 12

Answers

Answer:

4

Step-by-step explanation:

3x4=12

B= 4

Step by step:
Divide 3 both sides, so 3/3=1=x. 12/3=4

Which of these equations represent functions where x is the input and y is the
output
y = 2x-A
y = 2-B
y = 2y-C
x+y = 2-D
x-2-E

Answers

Answer:

y=2x-A

Step-by-step explanation:

If Alejandro walks 3 miles in 43 minutes, then how far will Austin walk in 93 minutes?

Answers

Answer:

Step-by-step explanation:

43min=3miles

93min=3*93=279/43

austin will walk 6.488miles for 93 minutes

Help pls :) (15 pts)

Answers

Answer:

the y is -2 and there's is no slope i think

Step-by-step explanation:

A lawn is 10,000 sq. feet. Ken can mow 1/4 of the lawn in 1/5 of an hour. Katie can mow 3/5 of the lawn in 2/6 of an hour.
a) Who mows the entire lawn faster?

Answers

Ken: 1/4 of 10,000 sq. Feet is 232.25 mowed in 12 minutes (1/5 of an hour). Ken has 9,767.75 left to mow which he’ll need 8 hours and 24 minutes to finish. Katie: 2/6 of 10,000 sq. Feet is 557.41 mowed in 20 minutes (2/6 of an hour). so Katie has 9,442.59 of the lawn left to mow, it’ll take 5 hours and 20 minutes for Katie to finish. So Katie mows the lawn faster

I need help thank you​

Answers

Answer:

[tex]4x^2-x+8[/tex]

Step-by-step explanation:

First expand [tex](x-8)^2[/tex].

[tex](x-8)(x-8)=x^2-16x+64[/tex]

Now Add:

[tex](x^2-16x+64)+(3x^2+15x-56)\\(x^2+3x^2)+(-16x+15x)+(64-56)=\\4x^2-x+8[/tex]

We want this:

3x^2 + 15x - 56 + (x - 8)^2

First, expand (x - 8)^2 using FOIL.

So, (x - 8)^2 = (x - 8)(x - 8).

(x - 8)(x - 8) = x^2 - 16x + 64.

We now add like terms.

3x^2 + 15x - 56 + x^2 - 16x + 64

4x^2 - x + 8

Done.


What is the equation of the ine?

Answers

Answer:

Step-by-step explanation:

x=0 is the equation because is just a vertical line

Answer: X=0

Step-by-step explanation:

Need help wit dis question

Answers

Answer:

A

Step-by-step explanation:

you have to count the x and y variables so 1 is one up from the x and 2 right because its positive and 3 is right because its positive also if I get it wrong I'm sorry

A
why? Because the y intercept is 3 and if you see B & D don’t have the 3 as a y intercept & 1/2x is a positive slope so if you see C the line is going/pointing down ,which that makes it negative & A is the going up/positive

After getting 5 new rocks, George gave half of his rock collection to Susan. If George gave Susan 36 rocks, which equation could be used to determine how many rocks George started with?

One-half x = 36 + 5
One-half (x minus 5) = 36
One-half (x + 5) = 36
One-half x + 5 = 36

Answers

Answer:

1/2 (x+5) = 36  should be the equation that is used to determine how many rocks George started with.

Step-by-step explanation:

Let 'x' be the number of rocks George had.

As George gave, after getting 5 new rocks, half of his rock collection to Susan which is = 36 rocks

It means after getting 5 new rocks George's total rocks = 72

Given that he gave half collection to Susan = 36

Thus, before inducting 5 new rocks Georg's total rocks were = 67

Thus,

1/2 (x+5) = 36 should be the correct equation.

solving

1/2 (x+5) = 36

Multiplying both sides by 2

1/2 (x+5) × 2 = 36 × 2

x+5 = 72

x = 72 - 5

x = 67

Thus, before getting 5 new rocks, the number of rocks George had = 67

Therefore,

1/2 (x+5) = 36  should be the equation that is used to determine how many rocks George started with.

Answer:

c

Step-by-step explanation:

Which of the following is NOT a transformation?
Translation
Reflection
Rotation
Construction
Dilation

Answers

i’m pretty sure it’s construction

PLS ANSWER ASAP, 50 POINTS + BRAINLIEST (pls give explanation aswell.

Answers

Answer:

pet care will be cheaper

Step-by-step explanation:

pet care may have a higher boarding per day of 2+ more than fido's but the bathing is way higher in fido going 12+more than pet care.its mean ur paying even more in fidos by a total per day of 55 while pet care Per day is 45

boarding(in total)

(week-long vacation)

pet care=30x7=210

fidos=28x7=196

bathing (in total)

pet care=15x7=105

fidos=27x7=189

total cost

pet care=315

fidos=385

What is the volume of the cylinder below?
9^6^8
O A. 432pi units3
B. 216pi units3
O C. 324pi units3
D. 288pi units3

Answers

Answer:

Step-by-step explanation:

288pi units3

The volume of the cylinder in the image given is: 288pi units³.

What is the Volume of a Cylinder?

In mathematics, volume is the space taken by an object. Volume is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.

here, we have,

we know that,

Volume of a cylinder = πr²h,

where:

r = radius of the cylinder

h = height

Given the following:

r = 6 units

h = 8 units

Volume of the cylinder = 288pi units³

Learn more about volume of cylinder on:

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Supposed the profit from the sale of a product in a week is
P(x)=16x-100-0.1x²
There is a limit in the production of the product at 100 units for the week.
What level of production will yield a profit of $180

Answers

Step-by-step explanation:

180 =16x-100-0.1x2

-0.1x2+16x-280=0

x2-160x+2800=0

S=160

P=2800

DELTA=160*160-4*2800

DELTA=25600-10800

DELTA=14400

x1,2=160+/-

[tex] \sqrt{14400[/tex]

divided by 2

x1,2=160+/-120 div by 2

x1=140

x2=20

select the correct answer​

Answers

Answer:

a)  We get [tex]\mathbf{A+B=x^2-2x+1}[/tex]

So, Is the result of A+B is a polynomial:Yes

b) We get [tex]\mathbf{A-B=6x^3-7x^2+2x-1}[/tex]

So, Is the result of A-B is a polynomial:Yes

c)  We get [tex]\mathbf{A.B=9x^6+21x^5-18x^4+9x^3-3x^2}[/tex]

So, Is the result of A.B is a polynomial:Yes

Step-by-step explanation:

We are giving the polynomial equations:

[tex]A= 3x^2(x-1)\\B=-3x^3+4x^2-2x+1[/tex]

We need to find

a) A+B

[tex]A+B=3x^2(x-1)+(-3x^3+4x^2-2x+1)\\A+B=3x^3-3x^2-3x^3+4x^2-2x+1\\A+B=3x^3-3x^3-3x^2+4x^2-2x+1\\A+B=x^2-2x+1\\[/tex]

So, we get [tex]\mathbf{A+B=x^2-2x+1}[/tex]

So, Is the result of A+B is a polynomial:Yes

b) A-B

[tex]A-B=3x^2(x-1)-(-3x^3+4x^2-2x+1)\\A-B=3x^3-3x^2+3x^3-4x^2+2x-1\\A-B=3x^3+3x^3-3x^2-4x^2+2x-1\\A-B=6x^3-7x^2+2x-1\\[/tex]

So, we get [tex]\mathbf{A-B=6x^3-7x^2+2x-1}[/tex]

So, Is the result of A-B is a polynomial:Yes

c) A . B

[tex]A.B=3x^3(-3x^3+4x^2-2x+1)-3x^2(-3x^3+4x^2-2x+1)\\A.B=9x^6+12x^5-6x^4+3x^3+9x^5-12x^4+6x^3-3x^2\\A.B=9x^6+12x^5+9x^5-6x^4-12x^4+3x^3+6x^3-3x^2\\A.B=9x^6+21x^5-18x^4+9x^3-3x^2[/tex]

So, we get [tex]\mathbf{A.B=9x^6+21x^5-18x^4+9x^3-3x^2}[/tex]

So, Is the result of A.B is a polynomial:Yes

Two factors are​ multiplied, and their product is 32.3046. One factor is a whole number. How many decimal places are in the other​ factor? Tell how you know.

Answers

Step-by-step explanation:

a whole number has 0 decimal places (after the decimal point, meaning on the right side of the decimal point).

so, all the decimal places (4) must come from the other factor.

a multiplication by a whole number is always a series of additions of the other factor with itself. if anything, such a multiplication eliminates decimal places. it does not create additional ones.

e.g.

3.06 × 5 = 15.3 (because it is actually 15.30, but trailing 0s don't have any value like leading 0s, and are normally skipped).

the increase in the decimal places happens by involving places with higher value : 1/10 has a higher value than 1/100, that has a higher value than 1/1000, and so on.

so, e.g. 0.2×9 = 1.8 (and not 0.18).

as it is 2/10 × 9 = 18/10 = 1.8

an addition cannot create suddenly new decimal places with lower value.

therefore, normally we would say the other factor has 4 decimal places.

but in reality, it is a I said above, the 4 decimal places of the result of the multiplication "come from the other factor".

we cannot say that the other factor has 4 decimal places, because it could have more, and the multiplication with the whole number removed some.

e.g. 3.6 × 5 = 18 (or 18.0).

so,

32.3046 could be 6.46092 × 5

when we think this through, the other factor could have infinitely many decimal places.

like 5/9 × 108 = 0.555555... × 108 = 60

or our number

32.3046 could be 0.2991166666... × 108

so, all we can say, the other factor must have at least 4 decimal places.

The cost of 5 hats and 1 scarf is $47. The cost of 2 hats and 2 scarves is $40. How much does one hat cost?

Answers

Answer:

6.75

Step-by-step explanation:

h=hat, s=scarf

5h + 1s = $47 (equation 1)

2h + 2s = $40 (equation 2)

multiply equation 1 by 2 , we get: 10h + 2s = $94 (equation 3)

equation 3 minus equation 2, we get:

8h = $54 ⇒ h = $6.75 ⇔ 1 hat cost $6.75

substitute h = $6.75 into equation 2 to find s,

2($6.75) + 2s = $40

$13.5 + 2s = $40

2s = $26.5

s = $13.25 ⇔ 1 scarf cost $13.25

A wire is 32 cm long. The wire is cut into 2 pieces, each piece is bent and formed into the shape of a square
A(x) =

Answers

The side of the square shape is calculated as 4cm.

What is meant by square?

A square is a subset of a rectangle (an equilateral rectangle) and a subset of a parallelogram (an equilateral and equiangular one).

A square has 4 axes of symmetry and two finite diagonals that are equal (as with any rectangle). A square divided by a diagonal yields two right triangles.

As, a wire is 32-centimetre-long,

If we cut this same wire in half, the result should be 1/2 of total of

32/2 = 16

In addition, the square has four equal sides.

16/4 = 4

As a result, the square's sides should be 4 cm.

To know more about the square, here

https://brainly.com/question/25092270

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The complete question is-

A wire is 32 cm long. The wire is cut into 2 pieces, each piece is bent and formed into the shape of a square. Calculate the side of square.

Design a closed rectangular box of width w, length l, and height h. The sides of the box cost 1 cent/cm2 and the top and bottom cost 2 cent/cm2 . (a) Write an equation for cost (in cents) in terms of w, l, and h. Use lower case letters.

Answers

Answer:

Equation for cost (in cents) in terms of w, l, and h is 2h(w + l) + 4l*w

Step-by-step explanation:

We are given

A rectangular box with dimensions

Width = w

Length =  l

Height = h

This needs to be visualized in 3D

First type of Sides of the box is made using the width and height

second type is made using length and height

Area of the 1st two sides = 2*w*h

Area of the 2nd type of sides = 2*l*h

Area of the top and bottom  = 2*l*w

Cost for sides = 1cent/cm^2

Cost of the sides calculated = cost* Area=  1*(2*w*h+2*l*h)

                                                                   = 2h(w + l)

similarly

cost of top and bottom = 2*2*l*w = 4*l*w

Total Cost = 2h(w + l) + 4l*w

kate used a 30% off coupon to purchase a sweater. if she saved $14.40, what was the original price of the sweater?

Answers

48 x .3= 14.4 so $48 is answer

Use the point-slope form to write the equation of a line that passes through the point (-20,-16) with slope -1−1.
(It must be a y=mx+b answer please)

Answers

so m is always the slope, and the slope is the y, so -1=-16y+20

height of cylinder is 24 mm and 8 mm radius whats the volume

Answers

Answer:

4825.49 mm^3

Step-by-step explanation:

V = (pi)(r^2)(h)

(pi)(8^2)(24) = 4825.48632 (round) 4825.49

hopefully this is right i haven't done cylinders in a while lol

the answer is 4825.49

John spent $75 on a shopping trip for new clothes last week. He had expected to spend $100 on clothes. A 6-column table with 1 row. Column 1 is labeled Approximate Value with entry 100 dollars. Column 2 is labeled Exact Value with entry 75 dollars. Column 3 is labeled Error with entry 25 dollars. Column 4 is labeled Absolute Error with entry blank. Column 5 is labeled Ratio with entry blank. Column 6 is labeled Percent Error with entry blank. How much was the absolute error in his estimate? $ John spent $75 on a shopping trip for new clothes last week. He had expected to spend $100 on clothes. A 6-column table with 1 row. Column 1 is labeled Approximate Value with entry 100 dollars. Column 2 is labeled Exact Value with entry 75 dollars. Column 3 is labeled Error with entry 25 dollars. Column 4 is labeled Absolute Error with entry blank. Column 5 is labeled Ratio with entry blank. Column 6 is labeled Percent Error with entry blank. How much was the absolute error in his estimate? $

Answers

Answer:200

Step-by-step explanation:

All you have to do is add.

Answer:

25

Step-by-step explanation:

because its simple math

anyways have an nice day

Whats the slope for y=3x+5


1. 3
2. 5

Answers

Answer: The slope is 3

Step-by-step explanation:

y=3x+5

Slope intercept form formula is y=mx+b

m stands for slope

b stands for y-intercept

Therefore the slope is m which is 3

Question 1a: Given the function below. find f(-2)
f (x) = x2 + 4x - 5
E
Your answer

Answers

Answer: -17


f(-2)= -2^2 + 4(-2) -5
-4 + (-8) -5
-4-8-5= -17

Need help with math bell ringer

Answers

Answer:

y = 2

Step-by-step explanation:

Slope that passes through two points, (10, y) and (3, 4) = [tex] m = \frac{y_2 - y_1}{x_2 - x_1} [/tex].

Where,

[tex] (10, y) = (x_1, y_1) [/tex]

[tex] (3, 4) = (x_2, y_2) [/tex]

m = -²/7

Plug in the values

[tex] \frac{-2}{7} = \frac{4 - y}{3 - 10} [/tex]

[tex] \frac{-2}{7} = \frac{4 - y}{-7} [/tex]

Cross multiply

[tex] -2*-7 = 7(4 - y) [/tex]

[tex] 14 = 28 - 7y [/tex]

[tex] 7y = 28 - 14 [/tex]

[tex] 7y = 14 [/tex]

Divide both sides by 7

y = 2

The graph of y = f(x) is shown below. What are all of the real solutions of f(x) = 0?

Answers

Answer:

the real solutions are the ones that actually cross the x-axis.

so the real solutions are (-5, 0) (-1,0) (4,0) and (8,0)

Please please help me!!
solve the system of equations.
{ x= 3y + 4
{3x - 9y = 12

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. There is one solution. The solution of the system is __ ( simplify your answer. Type an ordered pair.)
B. The solution set of the system {(x,y)| x = 3y+4}.
C. The solution set is ∅.

Answers

Answer:

infinite solution

Step-by-step explanation:

if substitute 3y+4 Into 3x your equation should be 3(3y+4)-9=12 then you multiply and combine like terms then your answer should be 12=12 which is a true statement meaning it has infinite solutions

You buy tomatoes in 25- pound cases. One batch of cobb salad requires 6 ounces of tomatoes. How many portions can be made with one shipment. Round down don't include parrial portions​

Answers

66 portions. (25 • 16) / 6

Every month, Theresa sets aside $410.60 of her paycheck to use as spending money. This month, she plans to use 2/5 of her spending money for groceries. How much money would Theresa have this month to spend on items other than groceries?

Answers

Answer:

246.36

Step-by-step explanation:

Other Questions
Hyperlinks on a Web site might redirect you to a site belonging to a different company and/or organization.TrueFalse Summary of amendment 1 if anyone can! YOU GET 60 POINTS!! Ronald rents a car from Cheap Rent-a-Car for $25 plus $0.05 per mile. Dixon rents a car from Great Cars for $40 plus $0.03 per mile. How many miles must they both drive for their rental fees to be the same? 1. Enzymes are examples ofA. CarbohydratesB. LipidsC. ProteinsD. Nucleic Acids2. Which of the following is the correct role of nucleic acids in the body?A. They provide quick-releasing energy to the body.B. They contain genetic information that is passed to offspringC. They catalyze chemical reactions in the cell.D. They are the main structural components of cell membranes.3. Which of the following is NOT an organic molecule?A Cellulose (C6H1005)B. Sucrose C12H22011C. Water H2OD. Testosterone C19H2O24. Which function of lipids is NOT.jmportant for a bear hibernating in the winter?A Long term energyB. Insulation from the coldC. Structural support in the cell membraneD. Prevents water loss5. Meat, eggs, hair, and feathers all contain this monomerA MonosaccharideB. Amino acidC NucleotideD. TriglycerideCan yall please help me!!!! What is the unit price if 4 pounds of fruitcost $6.487 May someone help me out on this question? Gabriel was given a gift card for a coffee shop. Each morning, Gabriel uses the card tobuy one cup of coffee. Each cup of coffee costs $4 and the original amount of moneyon the gift card was $20. Make a table of values and then write an equation for A, interms of x, representing the amount money remaining on the card after buying xcups of coffee.Number of Cups of Coffee Amount of Money Remaining on CardAnswer: A = Question in image :) Please help stick on this !!!!! How can I obtain the graph of f(x) = -1/2(x + 2)^2 - 5 from the graph of g(x) = x^2? please show work Cal is packing his suitcase to go on a trip. He wants to pack 4 pairs of pants chosen from the 8 pairs of pants in his closet and 5 shirts chosen from the 9 shirts in his closet. In how many different ways can this be done? A brand new TV bought on Black Friday was $599. The value of the TVdepreciates by 22% each year. When will the value of the TV be less than$240? What did Alfred Adler believe was the main course of psychological disorders?Select one:a. a lack of social interestagO b. sexual fantasies in early childhoodc. disturbance of contact with the collective unconsciousd. abnormal patterns of reinforcement A hand crank generator is used to power a light bulb. The person turning the crank uses 22 Newtons of input force to turn the crank 8 revolutions in 3 seconds. Each revolution of the crank equals 0.3 meters of distance that his hand moves. A multimeter connected to the light bulb records 0.08 amps of current and 9.04 volts. 1. Calculate the input power of the hand crank generator in Watts.2. Calculate the output power of the hand crank generator in Watts.3. Calculate the efficiency of the hand crank generator. in addition to hardware, software, data, and procedures, the fifth major component of a computer system are codes. A) Analyze the effects of the Civil War and Reconstruction on the lives of African Americans in the South socially, politically, and economically.B) In what ways did their situation represent continuities from the pre-Civil War period? Kelly is knitting a scarf for her brother. It took her 1/3 hour to knit 3/8 foot of the scarf. What is Kellys knitting speed, in feet per hour? 1. 1 1/8 per hour2. 3 feet per hour3. 2 1/2 feet per hour4. 4 1/2 feet per hour the smaller of two numbers is 2 less than 1/3 the larger. the sum of the two numberrs is 50 what is the value of the numbers dr. jewel is completing an experiment on caffeine-induced stress. dr. jewel nor the the participants of the experiment know who did and did not receive caffeine until the study was over. this is an example of a(n): Montraie drove 220 miles in 5 hours. If he continued at the same rate, how long would it take to travel 88 miles?