pls help u dont have to explain that much​

Pls Help U Dont Have To Explain That Much

Answers

Answer 1

Answer:

k = -7

Step-by-step explanation:

Given

x² - x - 42 = (x + k)(x + 6)

Required

Find k

x² - x - 42 = (x + k)(x + 6)

Expand the left hand side

x²-7x + 6x - 42 = (x + k)(x+ 6)

Factorize

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

Further factorize

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

By comparison

x + k = x - 7

Subtract x from both sides

k = -7


Related Questions

Estimate: 23.41 ÷ 3.1

Answers

Give a minute I will find answer

Answer:

The answer is 8

The estimated answer is eight. Here‘s what I did. First, I rounded twenty three and forty-one hundredths to twenty-three. Then I rounded three and one-tenths to three.

I couldn’t quickly find an answer to twenty-three divided by three. So, I used compatible numbers, twenty-four divided by three… which equals eight.

PWEASE HELP :( NOW BEG YOU

Answers

Answer:

Step-by-step explanation:

WILL MARK BRAINLYIST

Answers

Answer:

what's the question

Step-by-step explanation:

lol but u could mark me brainlyist

Answer:

.....................................

Step-by-step explanation:

BRAINLIEST
please help and leave a small explanation:)

Answers

Answer:

Choose option D. Angle 3 and Angle 6

Step-by-step explanation:

Angle 3 = Angle 6 ( being alternate angels)

Hope it will help :)

Answer:

congruent means that they are the same angle so that being said, you can clearly tell that A, B, and C are not the same angles at all. and D is the only correct answer.

Step-by-step explanation:

I really hope this helps!


Which of the following best describes the expression 6(y + 3)?


Please !

Answers

Answer:

The product of a constant factor of six and a factor with the sum of two terms

Step-by-step explanation:

URGENT!!!! The area of a rectangular floor is 80 square feet. The length of the floor is 2 feet less than the width of the floor.

What is the width of the floor?

Drag the answers into the boxes to correctly complete the statements.


The equation Response area , where w is the width of the floor in feet, can be used to solve this problem. The width of the floor is Response area feet.

Answers

Answer:

The width of the floor is 10 ft.

Step-by-step explanation:

First, you have to form expressions of width and length in terms of w. With the given information :

width = w ft

length = (w - 2) ft

Given that the area of rectange is A = length × width so you have to subtitute the expressions and value into the formula :

A = l × w

80 = (w - 2) × w

w(w - 2) = 80

w² - 2w = 80

w² - 2w - 80 = 0

(w + 8)(w - 10) = 0

w + 8 = 0

w = -8 (rejected)

w - 10 = 0

w = 10

Sherry uses the steps below to solve the equation x + (negative 8) = 3 x + 6.

Step 1 Add 1 negative x-tile to both sides and create zero pairs
Step 2 Add 8 positive unit tiles to both sides and create zero pairs.
Step 3 Divide the 14 unit tiles evenly among the 2 x-tiles.
Step 4 The solution is x = 7

What is Sherry’s error?
In step 1, she should have added 3 negative x-tiles to both sides.
In step 2, she should have added 6 negative unit tiles to both sides.
In step 3, she did not divide the tiles evenly.
In step 4, she should have found the solution x = negative 1.

Answers

Step-by-step explanation:

The given equation :

x + (negative 8) = 3 x + 6.

or

x+(-8) = 3x+6

Step 1.

Add (-3x) to both sides of the equation.

x+(-8) + (-3x) = 3x+6 +(-3x)

x-8 = 3x +6

Step 2.

Add 8 positive unit tiles to both sides and create zero pairs.

x-8+8 = 3x +6 +8

x = 3x +14

Step 3.

x-3x = 14

-2x = 14

x = -7

Hence, step 1 is incorrect as she should have added 3 negative x-tiles to both sides.

Answer:

Step 2

Step-by-step explanation:

if x = -3 is a zero of f(x), which of the following must be true?
a) A factor of f(x) is (x – 3)
b) A factor of f(x) is (x + 3)
c) x = 3 is also a zero
d) f(x) has no real solutions

Answers

Answer: B

Step-by-step explanation: You make the values in the parentheses equal to zero.

(X + 3) = 0

X = -3

A is wrong because the root would be 3, not negative 3. C is wrong because 3 isn’t guaranteed to be a root. D is wrong because -3 is a real solution.

Find the slope of the line (1,6) and (-3,0)

Answers

Answer:

slope= 3/2

Step-by-step explanation:

y2-y1/x2-x1=slope

0-6/-3-1= -6/-4 or 3/2

Answer:

(1, 6) is 1 quadrant and (-3, 0) is 2nd quadrant

can someone help me find answer.

Answers

Answer:

Your answer is 7 meters.

Answer:

A coral reef grew 7 meters.

Step-by-step explanation:

The prefix "milli" before any standard  unit such as meters, grams, or seconds and etc., It means it takes 1000 milli units to make 1 standard unit. Example:

1 meter= 1 millimeters.

To solve this problem you need to cross multiply:

7000 millimeters              1 meter    

                       multiply                 = 7 meters

1 month              1000 millimeters

Units that are the same and diagonal from each other cancel out.  

So the answer is: Last month, A coral reef grew 7 meters.

5) What is the product of prime numbers immediately before and after 50?​

Answers

Hey there!

The answer to your question is 2491

The two prime numbers immediately before and after 50 are 47 and 53, so 47 x 53 = 2491.

Hope this helps and have a great day!

PLS help whats 800000000.0%x9000000.0%=p\

Answers

Answer: 720,000,000,000

Step-by-step explanation: Find your answer by multiplying the 2 percent's.

Let p, equal percent.

800000000.0%x9000000.0% = p

800000000.0%x9000000.0% = 720,000,000,000

720,000,000,000  = p

A string 60 inches long is to be laid out on a tabletop to make a rectangle of perimeter 60 inches. Write the width of
the rectangle as 15 + x inches. What is an expression for its length? What is an expression for its area? What value
for x gives an area of the largest possible value? Describe the shape of the rectangle for this special value of x.

Answers

Answer:

Okay

Step-by-step explanation:

Hope this helps

Enjoy ur day

a)  An expression for its length will be (15 - x) inches.

b) An expression for the area of rectangle will be (225 - x²) inch².

c) At x = 0 the rectangle has maximum area.

d) The shape of a rectangle will be square at x = 0.

What is Perimeter of a rectangle?

The perimeter of a rectangle with length L and width W is defined as;

Perimeter = 2 (L + W)

Given that;

Total length of string = 60 inches

Perimeter of rectangle = 60 inches.

Now,

a) When the width of rectangle is 15 + x inches.

Then, Expression for its length is calculated as;

Perimeter of rectangle = 2 ( length + width)

60 = 2 ( length + (15 + x) )

Divide by 2,

30 = Length + 15 + x

Length = 30 - 15 - x

Length = 15 - x

So, An expression for its length will be (15 - x) inches.

b) Length of rectangle = (15 - x) inches

Width of rectangle = 15 + x inches

Then, Area of rectangle = Length x width

Area of rectangle = (15 - x) × (15 + x)

Area of rectangle = 15² - x²

Area of rectangle = 225 - x²

Thus, An expression for the area of rectangle will be (225 - x²) inch².

c) When all sides of a rectangle is equal to each then, the area of a rectangle is maximum.

So, We can formulate,

Length = width

15 - x = 15 + x

2x = 15 - 15

2x = 0

x = 0

Hence, At x = 0 the rectangle has maximum area.

d) When x = 0,

Then, The sides of a rectangle are equal.

This imply that the shape of a rectangle will be square.

Therefore,

a)  An expression for its length will be (15 - x) inches.

b) An expression for the area of rectangle will be (225 - x²) inch².

c) At x = 0 the rectangle has maximum area.

d) The shape of a rectangle will be square at x = 0.

Learn more about the rectangle visit:

https://brainly.com/question/28684467

#SPJ5

Solve the equation:
- 6n = 2 3/4

Answers

Answer:

n= 11/24

Step-by-step explanation:

hope it helps

I will give brainiest to whoever answers correctly !!

Answers

Answer:

august 1st

Step-by-step explanation:

HELP AGAIN PLSSSSSSSS

Answers

The correct answer is 25 :)

5 x 5= 25

Answer:

5x5 = 25

hope this helps (again) :D

5) Eastwood Middle School wants to paint the football field black, but not the
center.
The diagram below shows the dimensions of the field and center circle.
How much area will they need to paint black?
SHOW ALL WORK
Eastwood's Football Field
30 ft
75 ft
-100 ft-
04674 sq ft
O 706,6 sq ft
7500 sqft
6793.5 sq ft

Answers

What grade is this????

Evaluate w + 2w + 1 when w equals 8.

Answers

Answer:

25

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

w + 2w + 1

w = 8

Step 2: Evaluate

Substitute in w:                      8 + 2(8) + 1Multiply:                                  8 + 16 + 1Add:                                        24 + 1Add:                                        25

so which one is it? a, b, c, or d? I NEED HELP ASAP NO STEP BY STEP NEEDED
THANKS SO MUCH :)

Answers

Answer:

The answer would be B. With equations, what you do to one side you have to do to the other.

Hey would someone help me with my math question ?

Answers

Answer:

Store number 1 has the best discount.

Step-by-step explanation:

Find how much of a discount you get from each store. For number 1 you find 30% of $150 by turning the percent to a decimal and multiplying, for number 2 you would subtract 150 - 30, and for number 3 you subtract 150 - 1/5. When all of this is done you get the greatest discount of $45 off from store number 1.

It is B the first store has the best deal please give branliest

On the average it takes the factory 4.2 hours to produce 6 truckloads of steel how many truckloads would the factory produce in 7 hours ?

Answers

29.4 factory truckloads would be produce

help me ill give you 10 points

Answers

ANSWER: A. (4:6) B. (10:4)

Answer:

a) 4:6= 2:3 or 2/3 or .666666

b) 10:4= 5:2 or 5/2 or 2.5

Step-by-step explanation:

Decide if the statement is true or false.
7 is a solution of - 4x = -28.

Answers

True

Divide by -4 on both sides and you're left with x=7

-11f=7(1-2f)+5 solve for f

Answers

Answer:

4

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

f = 4

Answer:

f = 4

Step-by-step explanation:

I got this answer ON Khan Academy.

Hope this helps! :)

The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 5 to 3 . If there were 4395 total votes, how many yes votes were there?

Answers

Answer:

There were 2747 yes votes.

Step-by-step explanation:

This question can be solved using proportions.

The ratio of yes votes to no votes was 5 to 3 .

This means that for each 5 + 3 = 8 votes, 5 were yes and 3 were no.

If there were 4395 total votes, how many yes votes were there?

For each 8 votes, we have 5 yes. How many yes votes were there in 4395 votes?

5 yes - 8 votes

x yes - 4395 votes

8x = 4395*5

x = 4395*5/8

x = 2747

There were 2747 yes votes.

please help, thanks :)​

Answers

Answer:

It's C :)

Step-by-step explanation:

Next time check the y-intercept

Green has a intercept of 1

and purple has -3

Please solve
8-6(x-3) >-4x+12

Answers

Answer:

7 > x

Step-by-step explanation:

8-6(x-3) > -4x+12

Multiply 6 with the ones in the paranthesis:

8-6x+18 > -4x+12

Simplify numbers:

26-6x > -4x+12

Do the balance method:

12-26 > -6x+4x

-14 > -2x

Simplify to x:

-14/-2 > -2x/-2

7 > x

Answer:

Step-by-step explanation:

Here you go mate

Step 1

8-6(x-3) >-4x+12  Equation/Question

Step 2

8-6(x-3) >-4x+12  Simplify

-2x+26>12

Step 3

-2x+26>12  Subtract

-2x>-14

Step 4

-2x>-14  Divide

answer

x<7

I will give brainiest to whoever answers correctly !!

Answers

Answer:

March 19th

Step-by-step explanation:

Starting at November 20th, There are 10 days until the start of December

110 days left

December has 31 days

79 days left

January has 31 days

48 days left

February on a leap year has 29 days

19 days left

The load will be due on March 19th

1/4(12x - 16) = 4 is equivalent to 3x - 16 = 4

Answers

Answer:

False, it's equal to 3x-4

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

16,80, 400,...
Find the 6th term.

Answers

Answer:

Step-by-step explanation:

50,000

I think

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