Mathematics High School

Factor the expression completely.

18 x − 21 18x−21

Answers

Answer 1

Answer:

3( 6x-7)

Step-by-step explanation:

18 x − 21

Factor a 3 out of each term

3*6x - 3*7

3( 6x-7)

Answer 2

Answer:

Factor 18x−21

18x−21

=3(6x−7)

Answer:

3(6x−7)

Step-by-step explanation:

Related Questions

plz help will award brainliest

Answers

Answer:

After 5 hours.

35 bacteria cells.

Step-by-step explanation:

Andy’s population is represented by [tex]B=6x+5.[/tex]

Samantha’s population is represented by [tex]B=2^x+3[/tex]

Where B represents the total population given the number of hours x.

We want to find at what hour will their population be the same. We are told to use graphing technology.

Graphing them, we will get the graphs below.

Graphically, their population will be the same where the two graphs intersect.

So, we can see that they intersect at (5, 35).

Therefore, after 5 hours, the total number of bacteria cells for both experiments will be the same.

And the total number of bacteria at that time will be 35 bacteria cell.

Consider the following equation 70 = bx + 7
What value of b will result in the solution x = -9?
A: 11
B: -11
C -7
D 7

Answers

Answer:

I think the answer us C.

Step-by-step explanation:

70-7=63. 9×7=63 so we now know the two values. if the outcome is a positive number then both answers must be negative (negative times negative=positive).

Answer:

-7

Step-by-step explanation:

70=bx+7

70=b(-9)+7

70=-9b+7

-7. -7

63=-9b

÷-9 ÷-9

-7=b

Multiply (10 + 2-8)(110 - 2-18)
A) -22
B)-246
C)10-8suqareroot2
D)10+8suqareroot2

Answers

Answer:

First Option (A) -22

Step-by-step explanation:

Answer:

a) 22

Step-by-step explanation:

just took it on edge

second problem is c!

How would you explain the following problem to a friend who didn't understand today's lesson?
Three angles of a triangle measure 10x+15, 8x+3 ,and 6x–6. Find the measure of the smallest angle.

Answers

Answer:

The smallest angle is 6x-6 which is 36°

Does anyone know this!? If the answer is correct ill mark you as the best answer!

Answers

Answer:

H. Decreasing a y-intercept moves the graph down

Explain and correct the error made by a student who simplified this expression
–2x + 7x + 8 (–2 + 7 + 8)x 13x

Answers

Answer:

−11(−3−3x) ( i think)

Step-by-step explanation:

Find the volume of the box.
3
6 ft
5 Ft
The volume of the box is
cubic feet.

Answers

i think 90ft square

length x width x height
6 x 5 x 3
that equals 90
V=90 because v=lwh (v=5*6*3=90)

1/8k + 80= 1/2k + 120= ?
I need some help pls

Answers

1/8k + 80 = 1/2k + 120

Step 1: Subtract 1/2k from both sides.

1/8k + 80 - 1/2k = 1/2k + 120 - 1/2k

-3/8k + 80 = 120

Step 2: Subtract 80 from both sides.

-3/8k + 80 - 80 = 120 - 80

-3/8k = 40

Step 3: Multiply both sides by 8/(-3).

(8/-3) x (-3/8k) = (8/-3) x (40)

Answer: k = -320/3 or −106.667


5 pencils and 3 pens costs £11.
4 pencils and 6 pens costs £16.
Find the cost of a pencil.
Find the cost of a pen.

Answers

Answer:

The pencil is £1 and the pen is £2

Step-by-step explanation:

Let the pencil be p and let the pen be f.

5p + 3f = 11

4p + 6f = 16

the top one multiplies by two:

10p + 6f = 22

4p + 6f = 16    subtract

6p = £6

pencil = £1

Then you substitute the value of the pencil into the equation and find the value of the pen.

Given Sine (t) = StartFraction 7 Over 25 EndFraction for StartFraction pi Over 2 EndFraction less-than t less-than pi, what is Cosine (t)?

Answers

Answer:

Answer is -24/25.

Step-by-step explanation:

Got it right on egde2020

The value of cos (t) is - (24/25), as per  the relation between the sine and cosine of an angle.

What is the relation between the sine and cosine of an angle?

For any angle 'Ф',  the relation between the sine and cosine of an angle is:

sin² (Ф) + cos² (Ф) = 1, when 0 < Ф < (π/2)

Given equation,

sin (t) = (7/25), for (π/2) < t < π

Here, 't' is in the second quadrant.

Therefore, sine is positive here.

However, cosine is negative there.

Therefore, the value of cos (t) is

= - √[1 - sin² (t)]

= - √[1 - (7/25)²]

= - √[1 - (49/625)]

= - √(576/625)

= - (24/25)

Learn about the relation between the sine and cosine of an angle here: https://brainly.com/question/8339068

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Helpppppp it’s middle school stuff

Answers

Answer: Melendez

Step-by-step explanation:

If you divide the amount of water each family uses by the ammountof people in the family, melendez has the lowest per person.

Raina, Chang, and Alonzo sent a total of 94 text messages during the weekend. Alonzo sent 3 times as many messages as Chang. Raina sent 9 more messages than Chang. How many messages did they each send​

Answers

Answer:

Chang sent 17 messages, Alonzo sent 51 and Raina sent 26.

Step-by-step explanation:

You turn the word problem into an algebraic expression and solve

Raina sent 51, Chang sent 17, and Alonzo sent 26 hopes this helps:)

The graph of a function is shown below 8 Which inequality represents the domain of the function?​

Answers

nuts gotten you really thought 10$1

Find the greatest common divisor of 63 and 42

Answers

Answer:

21

Step-by-step explanation:

A particular plant root grows 1.5 inches per moth. how many centimeters is the plat root grow per month?

A. 0.59 centimeters

B. 1.69 centimerters

C. 3.81 centimeters

D. 4.04 centimeters

PLEASE ANSWER!!!!!

Answers

C

1.5 inches= 3.81 centimeters




Evaluate Z=2X+5 solve for z

Answers

Answer:

z=2x+5

Step-by-step explanation:

10x + 1 + 12x - 5 = 180 Find x

Answers

Answer:

x = 92/11

Step-by-step explanation:

10x + 1 + 12x - 5 = 180

*group the like terms*

(10x + 12x) + (1-5) = 180

*simplify*

22x - 4 = 180

*add four on both sides to cancel out -4*

+4. +4

*simplify*

22x = 184

*divide both sides by 22 to cancel out the quantity and solve for x*

÷22 ÷22

*simplify*

x = 92/11

Answer:

x = 92/11, x = 8.36 repeating the .36, or x = 8 4/11

Step-by-step explanation:

Some number minus 11 is equal to the product of the number and 18.

Answers

Answer:

n - 11 = 18n

Step-by-step explanation:

n−11=18n

Step 1: Subtract 18n from both sides.

n−11−18n=18n−18n

−17n−11=0

Step 2: Add 11 to both sides.

−17n−11+11=0+11

−17n=11

Step 3: Divide both sides by -17.

−17n−17=11−17

n=−1117

Answer:

n = −11/17

what are the fractions that add up to 1
help plzz i will give u brainliest

Answers

Answer:

Things like:

2/9 + 7/9  = 9/9 = 1

3/4 + 1/4 = 4/4 = 1

If the number is the same for the numerator and denominator it adds up to 1.

More examples:

6/10 + 4/10 = 10/10 = 1

9/15 + 6/15 = 15/15 = 1

PLEASE HELP!
The area of a large rectangular field is 12, 750 square yards. The with is 150 ft.

a. find the length of the field in yards.

b. what is the length of the field in feet?

c. what is the area of the field in square feet?

Answers

Answer:

Area of rectangular field = 12750 square yards

Width = 150 feet

<< Find the length of the field in yards. >>

Your conversion factor: 3 feet = 1 yard

Width = 150 feet = 150/3 = 50 yards

Therefore,

Area = 12750 = L(50)

where

L = length of field = 12750/50

L = 255 yards

<< What is the length of the field in feet? >>

L = 255 yards * 3 feet/yard

L = 765 feet

< .What is the area of the field in square feet? >>

Since there are 3 feet in 1 yard, then there are 9 sq ft in 1 sq yard. Therefore,12750 sq yards * 9 sq feet/sq yd = 114,750 sq feet

Step-by-step explanation:

$180 car 15% discount

Answers

Answer:

$153

Step-by-step explanation:

180 * 0.85 = 153

What’s is 93875748282858828819482 - 3826283 have fun

Answers

Answer:

9.3875748e+22

Step-by-step explanation:

(x + 1)(x - 3)(x - 4)

Answers

Answer:

Simplified:

x^3 - 6x^2 + 5x + 12

Roots:

-1

3

4

Your answer is x^3-6x^2+5x+12

The function y = -3x + 42 models the average number of dogs at an animal shelter, where x is the number of days after July 1. The
function y = 4x + 7 models the average number of cats at the animal shelter, where x is the number of days after July 1. After how many
days is the average number of cats and dogs at the shelter the same?

Answers

Answer:

27 days

Step-by-step explanation:

I put a picture of the graph for you.

I think the answer would be 27 days:)

Which graph shows a set of ordered pairs that represent a function?

Answers

Answer:

The middle one is a function because there is only 1  x value distributing 1 y value

Step-by-step explanation:

Answer:

#3, on the top right corner

Step-by-step explanation:

The sum of the measures of the angles of a triangle equals 180°. Write and solve an equation to find the measure of the missing angle.

Answers

Answer:

108.9

Step-by-step explanation:

30.3 + 40.8= 71.1

180 - 71.1= 108.9

The measure of unknown ∠m is equal to 108.9°.

What is triangle inequality theorem?

According to the triangle inequality theorem the sum of the length of any two sides will always be greater than the third side. Mathematically -

(a + b) > c

Given is a triangle with its angle measurements.

We know that the sum of the angles of a triangle is equal to 180 degrees.

Therefore, we can write -

∠m + 30.3° + 40.8° = 180°

∠m = 180° - 71.1°

∠m = 108.9°

Therefore, the measure of unknown ∠m is equal to 108.9°.

To solve more questions on triangles, visit the link below-

https://brainly.com/question/24005690?referrer=searchResults

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what is the slope of (-8,9) , (3,2)

Answers

Answer: -7/11

Step-by-step explanation:

convert the given fractional number to percents 2/7​

Answers

Answer: 28.571429%

Step-by-step explanation:

2 divided by 7 is 0.2857142...

In order to make this a percentage you'll need to move the decimal two places to the right.

explain how you would answer 3 - (-5)

Answers

Answer:

3- (-5) + -2.

Step-by-step explanation:

Anything plus a negative number will either make that negative number go closer to zero, or turn into a positive number.

Dana invited 35 people to a party. Bottled soda comes in packages of 6 bottles. How many packages must Dana buy to have enough soda for each guest to have 1 bottle?

Answers

Dana needs to buy 6 packages.
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