Mathematics College

select the correct answer(click the photo)

Answers

Answer 1

Answer:

General Formulas and Concepts:

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define function

f(x) = 8x + 4

Step 2: Prep

Rewrite: y = 8x + 4Swap x and y: x = 8y + 4

Step 3: Find Inverse (Solve for y)

Subtract 4 on both sides: x - 4 = 8yDivide both sides by 8: (x - 4)/8 = yRewrite: y = (x - 4)/8Rewrite: f⁻¹(x) = (x - 4)/8

Related Questions

8. Two alarms ring simultaneously
3am in the morning. The first alarm rings every 20
minutes while the second alarm rings
every hour. What time will the two alarms
ring at the same
time for the third time?

Answers

3:20 then 3:40 then 4:00 for both

They will meet for a third time at 6am because 20 is one third of 60. So when the first alarm rings three times the second one will also ring. Then since the question is asking when the alarms ring for the third time together you ha e to add three hours to 3am because they always meet on the hour. Hope this helps!

Terdapat tiga bikar iaitu A, B dan C. Isipadu air didalam bikar C adalah dua
kali ganda isipadu air dalam bikar B. Selepas itu,
[tex] \frac{1}{4} [/tex]
daripada isipadu di dalam
bikar A dituang kedalam bikar B dan baki dituang kedalam bikar C. Isipadu
didalam bikar B dan C seterusnya masing-masing menjadi 400ml dan
1000ml. Apakah isipadu bikar A, B dan C sebelum air di dalam bikar A
dituang ke dalam bikar B dan C.

Answers

sorry, i only speak English. But I hope someone will help u :)

The manufacturer of a certain brand of lightbulbs claims that the variance of the lives of these bulbs is 4100 square hours. A consumer agency took a random sample of 26 such bulbs and tested them. The variance of the lives of these bulbs was found to be 5900 square hours. Assume that the lives of all such bulbs are (approximately) normally distributed. Test at the 20% significance level whether the variance of such bulbs is different from 4100 square hours. a)The value of the test statistic x is 15.743; we fail to reject the null hypothesis. b)The value of the test statistic x is 32.859; we fail to reject the null hypothesis. c)The value of the test statistic y is 32.859; we reject the null hypothesis. d)The value of the test statistic is 35.976; we fail to reject the null hypothesis. e)The value of the test statistic is 15.743; we reject the null hypothesis. f)The value of the test statistic x is 35.976; we reject the null hypothesis.

Answers

Answer:

124345

Step-by-step explanation:

Eighteen cups are equally packed into 6 boxes. Two boxes of cups break. How many cups are unbroken?

Answers

Answer:12

Step-by-step explanation:

18/6=3 cups in each box

3*2=6 cups broke=2 boxes

18-6=12 cups are unbroken

Plzz Due today!
The table below represents a linear function f(x) and the equation represents a function g(x): (See pic)

Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x).

Part B: Which function has a greater y-intercept? Justify your answer.

Answers

Answer: The table below represents a linear function f(x) and the equation represents a function g(x): x f(x) −1 -12 0 -6 1 0 g(x) g(x) = 2x + 6 Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x).

PART B: y=mx +b is slope intercept form of linear equation where m=slope and b =y intercept

slope for line for function f(x) =-5-(-1) / -1-0 =-5+1/-1=-4/-1=4

y = 4x+b

3=4(1)+b

3=4+b

-1 =b

y=4x-1

f(x)=4x-1 slope = 4

g(x)=2x -7 slope = 2

b) y intercept for f(x) is -1

and g(x) is -7

so f(x) is having greater y intercept

PLEASSSEEE HELPPP ASAPPPPP

Answers

Answer:

first one is 32

the second one is 53

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let RS = x , then PS = x²

2x² + 2x = 84

x² + x - 42 = 0

(x + 7)(x - 6) = 0

x = 6

PQ and RS are 6

QR and SP are 36

Slope for (20,8)(9,16)?

Answers

Answer:

m=-8/11

Step-by-step explanation:

[tex]\frac{Y2-Y1}{X2-X1} =\frac{y}{x}[/tex]

[tex]\frac{16-8}{9-20} =\frac{-8}{11}[/tex]

Marianne is 15 years old and her brother is 5 years old; is the relationship between their ages proportional?

Answers

Answer:

The ratio is 15:5 or 3:1. If Marianne is 3 years old, her brother is 1. And it is proportional...

Step-by-step explanation:

∠7 and angle ______ are supplementary??
a.)∠5 W
b.)∠13 K

Answers

Answer:

b angle 13

Step-by-step explanation:

I'm pretty sure

Answer:

a). ∠5

Step-by-step explanation:

both angles ∠7 and ∠5 together add up to 180°

The area of a rectangular parking lot is 4947 m2.
If the length of the parking lot is 97 m, what is its width?

Width of the parking lot:

The perimeter of a rectangular pool is 304 m.
If the width of the pool is 68 m, what is its length?

Length of the pool:

Answers

Answer:

1. width = 51 m

2. length = 84 m

Step-by-step explanation:

So remember, the area is (length * width).

It is given that the length is 97, and the area is 4947.

So plug this into a formula:

length * width = area

97 * width = 4947

Solve using inverse operations;

97 * width = 4947

/97 /97

width = 51m

The perimeter of a rectangle can be found by doing, (2 * (length + width)).

The width is given, it is 68m. The perimeter is also given, 304m. So just form an equation using this information:

2 * ( length + width) = perimeter

2 * (length + 68 ) = 304

Distribute;

2 * ( length + 68) = 304

2 length + 136 = 304

Inverse operations;

2length + 136 = 304

-136 -136

2length = 168

/2 /2

length = 84m

Answer:

The answer for number 1 is width = 51 m

The answer for number 2 is length = 84 m

Step-by-step explanation:

21947÷205 divide and check the result

Answers

Answer (3dp):

107.058

Step-by-step explanation:

(image is explanation)

Factor 15x-10x^3

PLEASE ASNWER ASAP

Answers

Answer:

[tex]\huge\boxed{\sf 5x(3-2x^2)}[/tex]

Step-by-step explanation:

[tex]\sf 15x-10x^3\\\\Greatest Common Factor = 5x\\\\So, We'll \ take \ 5x \ common\\\\= 5x ( 3-2x^2)\\\\Thus, this \ is \ the \ factorized\ form\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

~AnonymousHelper1807

Is [tex]\sqrt{103}[/tex] irrational or rational? What is your reasoning?

Answers

Answer: irrational

Step-by-step explanation:

[tex]\sqrt{103}[/tex] is an irrational number because it is not a perfect square. Irrational numbers keep on terminating, so the answer to the question is irrational.

Hope this helps you!

What is the answer for number 2

Answers

The answer is 63. The answer is in the picture

Answer:

Your answer would be x = 63

Step-by-step explanation:

What I would do first is to isolate the -1/9x, which means I would subtract 17 on each side, giving me -1/9x = -7

Next I would multiply -9 (which is the inverse of -1/9) on both sides, negating the negative sign and making 63 positive, and thus isolating x as well.

What is 50 decreased by 50%

Answers

Answer:

Step-by-step explanation:

50% (1/2) of 50 is 25

50-25=25

Answer:

i 100% sure it 25

Step-by-step explanation:

For the expression: 12 - 7k + 9 - k
What are the terms?
What are the like terms?
What are the coefficients?
What are the constants?
What is the expression simplified?

Answers

Answer:

like terms is -7k-k and 12+8

The terms are 12,7k,9,k ( terms are separated by either a plus or minus signs)

Like terms are 12 and 9, 7k and k

The coefficients are 7 and 1 ( these are numbers that come before a variable e.g 7k, so 7 is the coefficient of k.

The constants are the numbers which are not variables like 12 and 9

21 - 8k ( add or subtract the like terms only)

Plz give brainleast if this answers helped ya :)

9. The expression x(x-7)+4(x-7) is equivalent to each of the following except which choice?
(1) (x+4)(x-7)
(3) x2-28
(2) x2 – 3x – 28
(4) (x-7)(x+4)

Answers

Answer:

I the answer is number 3

x(x-7)+4(x-7)

x²-7x + 4x-28

=x²-3x-28

(x+4)(x-7)

x²-7x+4x-28

=x²-3x-28

(x-7)(x+4)

x²+4x-7x-28

=x²-3x-28

x2 – 3x – 28

the factored form is

=(x+4)(x-7)

Which of these points is closest to the point (7,1)?

Answers

Answer:

6,7

Step-by-step explanation:

Is 319,459 divisible by 2?
yes
no
Submit

Answers

Answer:

Step-by-step explanation:

319,459 is not an even number

Calculator
2.25
What is the value of x?
D
3
Enter your answer in the box.
с
4
B
X =

Answers

3 should be it......

{ vowels in the word ALGEBRA}

Answers

Answer:

3 counting ALL VOWELS, or, 2 counting no double ups

Step-by-step explanation:

vowels - a, e, i, o, u

1+3 pls help me nowwwww

Answers

Your answer would be 4

Answer:

Step-by-step explanation:

3=1+1+1,

1+1+1+1=4 :p

The graph displays the distance a CO2 car traveled in a race.
Help!!!

Answers

Answer:

5 seconds per foot

Step-by-step explanation:

Answer:A

Step-by-step explanation:

13,84,85 are the last ones please help

Answers

Answer:

49,36,85

Step-by-step explanation:

c in step 4 comes from step 3... 49+36

a and b in step 3 come from step 2... in the same (you've got a - b and then 7 squared - 6 squared, so a is 49 and b is 36

Please answer this correctly without making mistakes

Answers

Answer:

First figure out how many cups are in a gallon. 16 .

Next multiply 16×3= 48

Finally you divide price per cup or 20.16/ 48.

The cost is .42 cents per cup.

I got 0.64 because you first divide 20.16 by 3 and get 6.72
Sooo the 6.72 is the price of each gallon and since there is 16 cups per gallon you divide 6.72 by 16 and your answer is 0.42

what is the slope of an equation of the line that passes through the point (3,-5) and has a slope of 0

Answers

Answer:

y=0x-5

Step-by-step explanation:

hope this helps :3

if it did pls mark brainliest

What is an equation of the line that passes through the point (-8,0) and is perpendicular to the line x+2y=14

Answers

Step-by-step explanation:

let eqn be y = mx + b.

Since perpendicular, m = - 1/(-0.5) = 2

sub (-8, 0):

0 = 2(8) + b

b = - 16

therefore equation is y = 2x - 16

Topic: coordinate geometry

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

Solve the following inequality using both the graphical and algebraic approach:
5-x<2(x - 3) + 5
A) x<2 Graph A
B) x>2 Graph A
C) x<2 Graph B
D) x>2 Graph B

Answers

Answer:

Step-by-step explanation:

The correct answer for the given inequality 5-x<2(x - 3) + 5 is x<2 Graph A

What is an inequality?

A relationship between two expressions or values that are not equal to each other is called inequality.

Given that, an inequality 5-x<2(x - 3) + 5

On solving, we get,

5-x < 2x-6+5

5-x < 2x-1

5+1 < 3x

x < 2

Let y₁ = 5-x, and y₂ = 2(x - 3) + 5

Plotting the graph, we get the graph A

Hence, the correct answer for the given inequality 5-x<2(x - 3) + 5 is x<2 Graph A

For more references on inequality, click;

https://brainly.com/question/28823603

#SPJ2

If x= time in minutes, y= distance in miles, and y=1/6x. How far can you run 5 points
in 3 hours? Please please help

Answers

Answer: 30 miles

Step-by-step explanation:

3 hours is 180 minutes.

y=1/6(180)

y=30 mi

Solve the system by substitution or elimination. {y=2x+8y=3x−1 A. (95,585) B. (7, 22) C. (9, 26) D. (75,545)

Answers

Answer:

C. (9, 26)

Step-by-step explanation:

By Substitution:

y = 2x + 8

y = 3x - 1

---------------------

2x + 8 = 3x - 1

-x + 8 = -1

-x = -9

x = 9

Now we can choose either of the two equations given to solve for y:

y = 2x + 8

y = 2(9) + 8

y = 18 + 8

y = 26

(9, 26)

By Elimination:

For this process, I am going to rewrite the equation in "x + y" for as it will make it easier to eliminate the variables

y = 2x + 8

2x - y = -8

y = 3x - 1

-3x + y = -1

-----------------

2x - y = -8

-3x + y = -1

-----------------

-x = -9

x = 9

2x - y = -8

2(9) - y = -8

18 - y = -8

-y = -26

y = 26

(9, 26)

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