I am in 8th grade and i need help on Pre Algebra could you help me?

Answers

Answer 1

Answer:

Sure, what do you need help on?


Related Questions

What are the dimensions of a rectangular wall that can be constructed with 100 feet of brick that will maximize the area enclosed by that brick?

Answers

Answer:

Step-by-step explanation:

25ft x 25ft

Maximum Area with Fixed Perimeter

In order to have a perimeter of 100 feet, that means that each side needs to be 25 feet long. The area would then be 25ft x 25ft, or 625ft2.


Evaluate 2x^3+4x-5 when x=3

Answers

Answer:

61

Step-by-step explanation:

In the addition problem below, the digits B and C represent a number different from any of the other numbers shown (that is, not 1, 4, 5, 6, or 9. B5+C9=164

Answers

B5 + C9 = 164

Split the numbers.

B0 +C0 +14 = 164.

B0 + C0 = 150

B + C = 15

B cannot be 1, 2, 3, 4, or 5 because that forces C to be a two digit number and C only represents 1 digit.

B cannot be 6 or 9 because they are present.

B can only be 7 or 8. C can also be 7 or 8.

Therefore, B = 7  and C = 8, OR B = 8 and C = 7.

There are 20 pens in a box. Eighteen of the pens are black the other two are red what percentage of the pens are black

Answers

Answer:

The answer I got was 90%

Step-by-step explanation:

18/20 = 90%

table shows pairs of coordinates. Plot these in the coordinate plane. Be sure to label the axes.

Answers

Answer:

I'm not sure how I can show you because you have to plot the points, not give a straight answer but I'll give you an idea.

Step-by-step explanation:

POINT 1: For the first point you are going to find 4 on the X axis and go up by 3. Plot your point there

POINT 2: Find the number 2 on the X axis and go up by 6

BTW keep in mind that the X axis is the the horizontal line that divides the coordinate plane half. If you folllow my intrustions for the first 2 points, you'll get an idea of how to grph the 3rd point!

Hope this helps!

has anyone heard from aneeshGG lately if so tell hime that bella needs to talk to him and DON`T WASTE THE POINTS!!!!!!!!!!!!!!!

Answers

Answer:

Are you isabella if not im zoe. I will try to tell him

Step-by-step explanation:

Brainliest?

Answer:

morning

Step-by-step explanation:

Core Bites # 13
Shannon borrowed $6,000 from her parents to buy a car. Her parents
charged her 4% simple interest for 2 years. How much interest did she
pay her parents?

Answers

Answer:

$1,500

Step-by-step explanation:

Shannon just borrowed $6,000 and charged her for 4% for 2 years. So you will divide 6,000 / 4 which gives you $1,500.

$480

explanation: i used the formula i=prt and plugged the numbers in —> i=6000•0.04•2 and got i=480

In the number 38. 7165, what number is in the hundredths position?

Answers

Answer:

1

Step-by-step explanation:

Your answer is 1 because hundredths position is the second number after the decimal other answers include.

Ten=3

Ones place=8

Tenths place=7

Thousandths place=6

Hundred thousandths=5


Hope it helps have a great day:)

Write a rule and an equation to fit the pattern in the table then use the rule to complete the table.

Question- the value of y is __ the value of x

Answers

Answer:

less thaan

Step-by-step explanation:

becuase you subtract 11 from the x values to get the answer.

lea has dimes and nickels that total to $5.50. there are a total of 75 coins. how many are dimes?

Answers

THERE ARE 50 DIMES

Let d be the number of dimes and n be the number of nickels. Then (because there are 75 coins), d + n = 75

Also, you can figure out the value of the money you have by multiplying the number of dimes by 0.10 and multiplying the number of nickels by 0.05. That means 0.10d + 0.05n = 6.25

This gives you 2 equations with the 2 unknowns (d and n). You can solve this in several ways, including substitution and elimination. I'll go with substitution because that's usually the first method taught.

If d + n = 75, then d = 75 - n (subtract "n" from both sides of the equation). Now since "d" is the same as "75 - n" you can plug into the second equation "75 - n" wherever you see "d". That gives you:

0.10(75 - n) + 0.05n = 6.25

7.5 - 0.10n + 0.05n = 6.25 (distributing to eliminate the parenthesis)

7.5 - 0.05n = 6.25 (combining like terms)

-0.05n = -1.25 (subtracting 7.5 from both sides)

n = 25 (dividing both sides by -0.05)
So there are 25 nickels.

Since d + n = 75, you can plug 25 in for n to get:

d + 25 = 75

d = 50 (subtracting 25 from both sides)

So there are 50 dimes


What is the image point of (9,9) after a translation right 5 units and down 4 units?

Answers

Answer:

(4,5)

Step-by-step explanation:

5 units right means the line x so we do 9-5 and we get 4.

Down 4 units means the y line so we do 9-4 and we get 5.

X goes 1st and y goes second so it is (4,5)

Could I please have BRAINLIEST?

12 is 30% of ____
(Please explain)

Answers

Answer:

40

Step-by-step explanation:

In word problems, the word "of" usually means multiply.  Thus, for example, 10% of $50 is $5.  This is because we can write 10% as 0.10 or as 10/100 (which is 1/10) and then multiply:    (1/10)(50) = 5

So, we often see equations like:

    R = (1/2)D        meaning R is 50% of D, or R is half of D

Let x = the number we want to find

This problem says:

 "12 is 30%       of    what number?"

  12 = (30/100) *        x

12 = (3/10)x

(10/3)12 = x             [multiply both sides by (10/3)]

    40 = x        

Checking (very important):      

 Is   12 = (3/10)(40)    ?

       12 = (3)(4)    ?

       12 = 12     ? yes

Answer:

40

Step-by-step explanation:

Let x = unknown number

30% = 30/100 = 0.3

If 12 is 30% of x, then

   30% of x is 12

⇒ 0.3x = 12

⇒ x = 12 ÷ 0.3

⇒ x = 40

Or, you can divide 12 by 3 to get 10% and then multiply this by 10 to get 100%:

12 ÷ 3 = 4 (so 4 is 10%)

4 × 10 = 40 (which is 100%)

In ΔUVW, u = 44 inches, ∠W=56° and ∠U=117°. Find the length of v, to the nearest inch.In ΔUVW, u = 44 inches, ∠W=56° and ∠U=117°. Find the length of v, to the nearest inch.

Answers

Answer: 6 inches

Step-by-step explanation:

Which number is a solution for the inequality 4p > 8?

Answers

[tex]\huge \underline\frak\pink{Answer}[/tex]

[tex]\small\mathbb\red{4×p-(8)<0}[/tex]

[tex]\small\mathbb\red{pull \: out \: like \: factors:}[/tex]

[tex]\small\mathbb\red{4p - 8 = 4 × (p - 2)}[/tex]

[tex]\small\mathbb\red{Divide \: both \: sides \: by \: 4}[/tex]

[tex]\small\mathbb\red{Add \: 2 \: to \: both \: sides}[/tex]

[tex]\small\mathbb\red{p < 2}[/tex]

[tex]\small\mathbb\red{Inequality \: plot \: for}[/tex]

[tex]\small\mathbb\red{4.000×8.000<0}[/tex]

[tex]\small\mathbb\red{one \: solution \: was \: found:}[/tex]

[tex]\small\mathbb\red{P<2}[/tex]

______________________________________

[tex]\small\frak\orange{hope \: its \: helpful \: to \: you}[/tex]

The vet says That rays puppy will grow to be at most 28 inches tall. Rays puppy is currently 1 foot tall. How much more will the puppy grow?

Write an inequality to solve

Answers

Answer:

16 inches

Step-by-step explanation:

1 foot is equivalent to 12 inches so the puppy will grow 16 more inches which is equal to 28 inches.

(ab+cd)2 - (ac-bd)2 factorize 2 is power

Answers

Answer:

(ab + cd + ac - bd)(ab + cd - ac + bd)

Step-by-step explanation:

(ab + cd)² - (ac - bd)² ← is a difference of squares and factors in general as

a² - b² = (a + b)(a - b)

Here a = ab + cd and b = ac - bd , then

= (ab + cd + ac - bd)(ab + cd - (ac - bd))

= (ab + cd + ac - bd)(ab + cd - ac + bd)

A printing machine printed 1764 pages in 6 minutes.
A) How many pages did it print in 4 minutes?
B) How many pages would it print in 9 minutes?
C) Write an equation to represent this situation.

Answers

Step-by-step explanation:

no of pages printed in 6 min = 1764

no. of pages printed in 1 min = 1764/6

= 294

a) no. of pages printed in 4 min = 294×4

= 1076

b) no. of pages printed in 9 min = 294×9

= 2646

I don't know for c) part

sorry for that.....

hope it would help you.....

Refer to the equation y = 3x – 5.
(a)Complete the table of values below. Show your work.
x y
-1
0
1





(b) Identify the slope and y-intercept of the equation.
slope =
y-intercept =

Answers

The equation y = 3x - 5 is an illustration of a linear equation

The slope is 3, and the y-intercept is -5

How to complete the table?

The equation of the table is given as:

y = 3x - 5

When x = -1, we have:

y = 3(-1) - 5 = -8

When x = 0, we have:

y = 3(0) - 5 = -5

When x = 1, we have:

y = 3(1) - 5 = -2

So, the complete table is:

x     y

-1    -8

0      -5

1       -2

The slope and the y-intercept

A linear equation is represented as:

y = mx + b

Where:

m represents the slope and b represents the y-intercept.

By comparison, we have:

m = 3, and b = -5

Hence, the slope is 3, and the y-intercept is -5

Read more about linear equations at:

https://brainly.com/question/14323743

I needa an answer?! It would really help <3


Thank you a lot!!!

Answers

Answer:

C. 2.865

Step-by-step explanation:

All you have to do in this situation is to subtract the amount he ran two weeks ago by the amount Thomas ran last week. It would look like so,

38.074 - 35.209

And once you do that you get the answer of 2.865

Hope that helps and have a great day!

Solve the system of equations. \begin{aligned} & 7x-3y = 20 \\\\ & y=5x-4 \end{aligned} ​ 7x−3y=20 y=5x−4 ​

Answers

Answer:

x=-1 & y=-9

Step-by-step explanation:

7x-3y=20 ⇒(1)

y=5x-4 ⇒(2)

Multiplying (2) by 3

3y=15x-12 ⇒(3)

Add (1) and (3)

7x-3y+3y=20+15x-12

7x=15x+8

-8x=8

Substitute by x at (2)

y=5(-1)-4= -5-4=-9

x=-1 and y=-9

The main cable of a suspension bridge forms a parabola modeled by the equation y = a(x – H)2 + k where y is the
height in feet of the cable above the road, x is the horizontal distance in feet from the right bridge support, a is a
constant, and (h, k) is the parabola's vertex. What is the maximum and minimum height of the bridge modeled by the
equation y = 0.005(x - 60)2 + 8?
O maximum height = 100 feet and minimum height = 26 feet
O maximum height = 100 feet and minimum height = 8 feet
O maximum height = 60 feet and minimum height = 26 feet
O maximum height = 26 feet and minimum height = 8 feet

Answers

Answer:

D) maximum height = 26 feet and minimum height = 8 feet

Step-by-step explanation:

100% on edge

Answer:D on edge

Step-by-step explanation:

the guy above is right .

When the doctor evaluates the nares, what finding could not be appreciated?

Answers

Answer:

Heart sounds

Step-by-step explanation:

Your doctor has allergic reaction, febrile rash, and meningitis in their differential for the patient.In a healthy adult, the heart makes two sounds, commonly described as 'lub' and 'dub. ' The third and fourth sounds may be heard in some healthy people, but can indicate impairment of the heart function. S1 and S2 are high-pitched and S3 and S4 are low-pitched sounds.

Jill just got her pilot’s license and wants to rent a plane. The Platinum Plane Company charges $180 plus $92 per hour to rent a plane. The Plastic Plane Company charges $250 plus $78 per hour. For what number of hours would the companies charge the same amount?

Answers

Answer:

5

Step-by-step explanation:

solve equation 180+92x= 250+78x

Which expression is the simplest form of 4x^3 + x^2 + 2\left( {{x^3} - 3{x^2}} \right)4x

3 +x 2 +2(x ^3−3x ^2 )?

Answers

B. 6x^3 -5x^2
hopefully this helps :))

PLS HURRY I WILL GIVE BRAINLIEST
Part A: Write an algebraic expression for 6 more than 7 times a number. (5 points)

Part B: Write a verbal expression for 3(n + 8). (5 points)

Answers

Part A

Let the number be n.

answer:

7n + 6

Part B

8 more than a number is multiplied by 3

Answer:

PART A: 8x7(+6)

Step-by-step explanation:

PART B: Expand 3(n + 8)

Step 1: Multiply (3) * (n + 8)

Step 1.1: Multiply 3 by each term in n + 8

Step 1.1.1: Multiply 3 * n

Group constants and powers by variable

(3 * 1)(n1)

3n

Step 1.1.2: Multiply 3 * 8

Group constants and powers by variable

(3 * 8)

24

Step 1 answer = 3n + 24

Group all like terms

3n + 24

helppppppppppppppppppppp

Answers

Hey there!

The first expression is

5x+15

The equivalent expressions are

5(x+3)

- the opposite of the Distributive Property: 5(x+3)=5x+15

Plus

isn't 5*x+5*3 the same as 5x+15?

Yeah, it is :)

Hence, the equivalent expressions are

[tex]\boxed{\boxed{\bold{Option\;A \;and\;Option\;B}}}[/tex]

[tex]\rule{200}{2}[/tex]

In order to simplify this expression, we need to combine like terms:

11+12y-3-y

The y's are like terms:

11+12y-y-3

11+11y-3

Can you spot any other like terms here? That's right, 11 and -3:

11-3+11y

8+11y

Hence, the equivalent expression is

[tex]\boxed{\boxed{\bold{11y+8}}}[/tex]

Hope everything is clear.

Let me know if you have any other questions; if so, please comment.

#LearningDoesn'tEnd

#LearningIsFun

Which equation is equivalent to startroot x squared 81 endroot = x 10? x 9 = x 10 x 9 = x2 20x 100 x2 81 = x2 100 x2 81 = x2 20x 100

Answers

The equation [tex]\rm \sqrt{x^2 + 81} = x + 10[/tex] is equivalent to [tex]\rm x^2 + 81 = x^2 + 20x + 100[/tex]. Then the correct option is D.

What is a quadratic equation?

It is a polynomial that is equal to zero. Polynomial of variable power 2, 1, and 0 terms are there. Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation.

The equation is given below.

[tex]\rm \sqrt{x^2 + 81} = x + 10[/tex]

Squaring both sides, we have

[tex]\rm (\sqrt{x^2 + 81})^2 = (x + 10)^2\\\\x^2 \ \ +\ \ 81 \ \ = x^2 + 20x + 100[/tex]

Thus, the equation [tex]\rm \sqrt{x^2 + 81} = x + 10[/tex] is equivalent to [tex]\rm x^2 + 81 = x^2 + 20x + 100[/tex]. Then the correct option is D.

More about the quadratic equation link is given below.

https://brainly.com/question/2263981

If you are buying at item at a store for a price of $45, and there is a 8.8% tax added on top, what would be the total amount due at the register, to the nearest cent?

Answers

Answer:

$48.96

Step-by-step explanation:

Convert percent to decimal:

8.8%=8.8/100=0.088

Percent formula:

a(1+r)

45(1+0.088)

45(1.088)

48.96

Total Amount Paid:

48.96

Factor the polynomial expression –16(x2 – 3x – 4).

Answers

Answer:

The answer is 16x-4x+1, give me brainliest answer

Answer:

–16(x2 – 3x – 4)

first we have to distribuite

-16x^2+48x+64

then we have to look for a number that goes into all of these which is -16

x^2-3x-4

then multiply the first by the last

-4x^2

then we have to find a two number that adds to make -3 and multiples to make -4x2

now lets list the factors

2*2

4*1

then lets just plug in

(x^2+x)(-4x-4)

now we have to factor out

x(x+1)-4(x+1)

-16(x-4)(x+1)

Hope This Helps!!!

Samantha’s college runs on a trimester schedule so she receives a bill 3 times a year for tuition. each trimester costs $1,450, and samantha must complete 2 years of college to receive her degree. the average cost for books each trimester is $350. approximately what will be the total cost for samantha to get her degree? a. $4,700 b. $5,400 c. $9,050 d. $10,800 please select the best answer from the choices provided a b c d

Answers

Answer:

the answer is 4,700

Step-by-step explanation:

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