Mathematics College

Factorise
1) 9a^2 - 6a​

Factorise1) 9a^2 - 6a

Answers

Answer 1

Answer:

9a^2 - 6a

taking common

3a(3a-2)

Related Questions

What is the next term in the following sequence?

54, -18, 6, ...

-2
3
2
-3

Answers

-2
Explanation:
You divide by -3each time
54/-3 = -18
-18/-3 = 6
6/-3 = -2

Given the balanced equation representing a reaction:

2H2 + O2 > 2H2O

The oxidation state of hydrogen in this reaction changes from

A)
–1 to +1

B)
–1 to +5

C)
0 to +1

D)
+5 to –1

Answers

Answer: The correct answer is A) -1 to +1

Find the solutions for 6x^2 -7x-20=0

Answers

Answer:

x=5/2, x=-4/3

Step-by-step explanation:

In a poll of students at the hockey championship, 87% of the students say that hockey is better than baseball.
(a) Explain why it is not a valid conclusion to say that hockey is more popular than baseball at the school.

Answers

Answer:

Sample Bias

Step-by-step explanation:

If you sample Hockey players on if their sport is better than baseball, chances are they will vote for their sport being better.

HELP HELP HELPPPP SOMEONE PLEASE-

Answers

Answer:

Its B

Step-by-step explanation: very ez

Answer:

B. All of these statements are true

Step-by-step explanation:

$10 is the smallest amount shown, therefore a is correct.

$25 is the greatest, so c is also correct

and a majority of the tickets start at $15, making d correct

What is the slope of the line perpendicular to
y=3x-12

Answers

Answer: y-3x=12. y=3x+12. If the line is perpendicular it means its slope is the negative reciprocal of the given lines slope. m = 3 negative reciprocal = -1/3. So the slope of the equation of the line

Step-by-step explanation:

Answer:

-1/3

Step-by-step explanation:

(-1)(m)^(-1)

this is the way to make a slope perpendicular

y=mx+b

m=slope

b=y-intercept

so:

(-1)(3)^(-1)

-1/3 is the slope of the line that is perpendicular to y=3x-12

Hope that helps :)

Please give brainliest

1 half of 4 over 5 = ____ fifth(s)

Answers

Answer:

2/5

Step-by-step explanation: 1/2 of 4/5 = 2/5

Can someone help me with the vertex of the parabola

Answers

Answer:

The vertex is (-1.5, 11.25)

Step-by-step explanation:

Melinda and Davy are making postcards to announce their new address. The table shows the number of postcards they can make together during each hour they are working. If they continue to make postcards at this rate, what is the total number they will make in 6 hours? Postcards
Number of Hours Number of Postcards
1 7
2 14
3 21

Answers

Answer:

3

Step-by-step explanation:

so its 8p = 56 is the frist bit and the second is 7. BOOM

Answers

p=7, I don't know if this is a question or not

State if the pair of triangles are similar. If so, state how you know they are similar and
complete the similarity statement

Answers

They can’t be similar. Similar triangles have congruent corresponding angles, and two angles are given on each. Neither of those correspond to another on the opposite triangle. Basically, there’s no way to have three congruent angles, so they aren’t similar.

The admission fee at an amusement park is $20 for children and $35 for adults. On a certain day, 276 people entered the park, and the admission fees collected totaled $7620. How many children and how many adults were admitted?

Answers

35x + 20y = 7620
x+y=276

Y=276-x
35x+20(276-x)=7620
35x+5520-20x=7620
15x=2100
X=140
140+y=276
Y=136
140 adults and 136 children

Total number of children are 116 and adults are 160.

What is an equation?

An equation is a combination of different variables, in which two mathematical expressions are equal to each other.

Let the number of children entered in park = x

And the number of adults entered in park = y

Fee for children = $20

Fee for adults = $35

According to given condition,

Total number of people = 276

⇒x+y = 276     (1)

Total fees collected = $7620

⇒20x+35y = 7620      (2)

By solving equation (1) and (2),

The value of x is 116

And value of y is 160

Total number of children are 116 and adults are 160.

To know more about Equation on:

https://brainly.com/question/187506

#SPJ2

A chemist wishes to mix a solution that is 12% acid. She has on hand 6 liters of a 4% acid solution and wishes to add some 16% acid solution to obtain the desired
12% acid solution. How much 16% acid solution should she add?
Complete the table.
Liters of
Solution
Percent Acid Liters of
(as a decimal) Pure Acid
0.04
6
Х
0.16
0.12

Answers

Answer:

25 liters of the 16% solution should be added.

Step-by-step explanation:

pure acid amount + pure acid amount = total pure acid amount

0.02*10          + 0.16*x           = 0.12*(10+x)     <<<---=== it is your balance equation;  x is the amount (in liters) of the 16% solution.

0.02*10 + 0.16x = 0.12*10 + 0.12*x

0.16*x - 0.12*x = 0.12*10 - 0.02*10

(0.16 - 0.12)*x = 0.12*10 - 0.02*10

x = %280.12%2A10-0.02%2A10%29%2F%280.16-0.12%29 = 25.

Answer.  25 liters of the 16% solution should be added.

Check.   %280.02%2A10+%2B+0.16%2A25%29%2F%2810+%2B+25%29 = 0.12 = 12% of concentration of the final mixture.   ! Correct !

Need help ASAP please!

Answers

Answer:

5

Step-by-step explanation:

See the attached image.

Mr. Taylor has 24 sports trophies. Of the trophies, 1
8 are wrestling trophies. How many
wrestling trophies does Mr. Taylor have?

Answers

Answer: 18 wrestling trophies.

Step-by-step explanation:

7. Simplify
(12p27
(2p2q6)​

Answers

Answer: 7776p^2q

Step-by-step explanation:

     

According to the DuPont 2012 Global Automotive Color Popularity Report, 23% of all cars manufactured in 2012 were white. In a random sample of 100 cars parked in long-term parking at Philadelphia International Airport, 19% of the cars were white. Identify the underlined values as parameters or statistics and give the appropriate variable. Spell out phat, x-bar, mu, sigma for the variable names. Which of the following statements istrue?

a. 19% and 23% are parameters, 100 is a statistic.
b. 23% is a parameter, 19% is a statistic.
c. 23% is a statistic, 19% is a parameter.
d. 19% and 23% are statistics, 100 is neither a parameter nor a statistic.
e. 19%, 23%, and 100 are all statistics.

Answers

Answer:

b. 23% is a parameter, 19% is a statistic.

Step-by-step explanation:

If the value is from a population, it is a parameter.

Otherwise, if the value is from a sample, it is a statistic.

23% of all cars manufactured in 2012 were white.

This is from the population(all cars), so 23% is a parameter.

In a random sample of 100 cars parked in long-term parking at Philadelphia International Airport, 19% of the cars were white.

100 is the size of the sample, which is neither a parameter, nor a statistic.

19% is from the sample of 100, so it is a statistic.

The correct answer is given by option b.

A label that wraps around a box of golf balls covers 75 percent of its lateral surface area. What is the value of x?

Answers

Answer:

To find the area of the rectangular prism, use the formula:

A = width x height x length

A = 2 x 2 x 3

A = 12

Now multiply A with 0.75

12 x 0.75 = 9

x = 9 in³

hope this helps

Step-by-step explanation:

What is the average of 100, 54 and 88?

Answers

Answer:

about 80.6

Step-by-step explanation:

(100+(54+88))/3

The answer is 80.67 round to the nearest tenth place btw

A roulette wheel consists of 18 red slots, 18 black slots, and 2 green slots. A player can wager $1 that a marble will land in a red slot, in which case the player would gain a $1. If the marble lands in a slot that isn't red, then the player loses their $1 wager. Let X represent the player's gain from a random $1 wager on red. Here's the probability distribution of X along with summary statistics:
Lose Win
X = gain (S) -1 1
Р(X) 20/38 18/38
Мean: Ax-$0.05
Standard deviation: ax$1.00
Suppose a player decides to wager $5 instead of winning $5.
Let Z represent the player's gain from a random $5 wager on red. possible outcomes become either losing or , so
What are the mean and standard deviation of Z? dollars?

Answers

Answer:

-$0.26 ; $5

Step-by-step explanation:

Given that :

____________ Lose ______ Win

X =$1 _______ - $1 ________ $1

P(X) _______20/ 38 _____ 18/38

Mean, Ux = - $0.05

Standard deviation, σx = $1.00

If the wager is $5 instead of $1

Mean = Σx*p(x)

Mean = (-5 * 20/38) + (5 * 18/38)

Mean = - 2.6315789 + 2.3684210

Mean (μ) = −0.26

Standard deviation :

Sqrt(Σx²p(x) - μ²)

[(-5^2)*(20/38) + (5^2)*(18/38)] - (-0.26^2)

(13.157894 + 11.842105) - 0.0676

= 24.999999 - 0.0676

= sqrt(24.932399)

= 4.9932353

= 5

Find the slope of the line.

Answers

Answer:

0

Step-by-step explanation:

Any horizontal line has a slope of 0.

potrzebuję na teraz pls

Answers

Answer:

I don't know what is this


Which expression is equivalent to b less than 50?
A 50b
B b - 50
C 50/b
D 50 - b

Answers

Answer:

50-b

Step-by-step explanation:

Whatever letter/number it begins with, it's that minus the second letter/number.


Please help ASAP!!!!

Answers

Answer:

-4

Step-by-step explanation:

32÷-8=-4

I need to know this fast

Answers

Answer:

396 Square feet

Step-by-step explanation:

1.) First find the side closest to you. 6 x 12 = 72. Then double it to match the parallel side. 72 x 2 = 144

2. Find the side to the right and left, 7 x 6 = 42. Then double it to match the parallel side. 42 x 2 =84

3.) Find the top side and bottom side. 12 x 7 = 84. Then double it to match the parallel side. 84 x 2 = 168

4.) Find the total surface area. 144+84+168=

5.) The total surface area is 396 square feet

Let me know if I am incorrect

Hi. I need help with the following questions. ( These arent multiple choice)

Layout:

1.

2.

3.

Answers

Answer:

The top blank is D. Quadrilateral

The middle blank is B. Parallelogram

The last blank if A. Square

Lia cut a long piece of into 2 pieces. One pieces of the string is 24 inches long, and the other piece of the string is 12 inches long. How many feet long was the piece of string before lia cut it?​

Answers

Answer:

24+12=36you find the total length

Answer:

3 feet

Step-by-step explanation:

Can somebody help me?

Answers

1.) -12b + 6c + 18
2.) 6(-2b +c+3)
3.) 6( -2(-2) + (-3) +3)=
6(4-3+3)=
6•4=24

Can someone please help meee

Answers

Answer:

90 degrees

Step-by-step explanation:

If two angles are supplementary they are a linear pair which means they form a straight line, and if you know a straight line equals 180 degrees which is the total degrees of a triangle.

Now if you have two supplementary angles and they are congruent that means not only are they right angles but its half of 180 so you divide these pair of 2 by 180 giving you your total of 90 degrees.

Have a nice rest of your day !

4) find the first five terms of the recursively defined sequence.
a1=5, an+1=-3an+1

Answers

Answer:

566556565*7*7/*7+666364

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