x^(2)+x-20
splitting the middle term

Answers

Answer 1
Are you trying to factorise this?

Here is a way you may not have been taught....
(x + a)(x + b) = x^2 + (a + b)x + ab

So you need to find two factors of -20 that add up to +1
-4 x 5 = -20 and -4 + 5 = 1. Perfect

x^2 + x - 20 = (x - 4)(x + 5)

Related Questions

What is 4-3 written in expanded form?

Answers

Answer:

four minus three

Step-by-step explanation:

your welcome

Si a = 7; b = – 2 , entonces 6ab es:


Seleccione una:
a. 40
b. 21
c. 11
d. -84

Answers

[tex]\implies {\blue {\boxed {\boxed {\purple {\sf {d. \: - 84}}}}}}[/tex]

[tex]\sf \bf {\boxed {\mathbb {Step-by-step\:explanation:}}}[/tex]

✒ [tex] \: 6\:a\:b[/tex]

Plugging in the value "a = 7" and "b = -2" in the above expression, we have

✒ [tex] \: 6 \times 7 \times ( - 2)[/tex]

✒ [tex] \: - 84[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}[/tex]

What is the product?

Answers

Answer:

-30a⁵b + 12a⁴b² + 16a³b² - 4a²b⁴ - 2ab³

Step-by-step explanation:

( - 6a³b + 2ab²)( 5a² - 2ab² b)

multiply the second parantheses by each term from the first parantheses.

-6a³b×(5a²- 2ab²b -b)+2ab×(5a² -2ab²b-b)

-6a³b× (5a² - 2ab² b) +2ab × (5a² - 2ab² b)

-30 a⁵b + 12a⁴b² + 6a³b²+ 10a³b² - 4a²b⁴ - 2ab

combine like terms

-30a⁵b + 12a⁴b² + 16a³b² - 4a²b⁴ - 2ab³

The graph compares the scores earned by 100 students on a pre-test and a post-test.

Two box and whisker plots showing Pre-Test and Post-Test scores on a number line from 0 to 100. The upper plot represents the pre-test scores. For this upper plot, the minimum number is 0, the maximum number is 78, the right side of the box is 60, the left side of the box is 16, and the bar in the box is at 30. The lower plot represents the post-test scores. For this lower plot, the minimum number is 4, the maximum number is 100, the right side of the box is 83, the left side of the box is 30, and the bar in the box is at 45.

About how many more students scored greater than 30% on the post-test than on the pre-test?


15

Answers

Answer:

25 more students

Step-by-step explanation:

30% mark represents:

50% on pre-test and 25% on post test.

So

50% of 100 = 50 students scored greater than 30%75% of 100 = 75 students scored greater than 30%.

The difference is:

75 - 50 = 25 students

Answer:

25 students

Step-by-step explanation:

PLS HELP I KEEP GETTING SPAMMED PLEASEE

EXPLANATION = BRAINLIEST

the area of the triangle is ____ square in

Answers

Answer:

A = 56 Sq.in

Step-by-step explanation:

A = H x B/2

A = 8 x 14

= 112/2

= 56

THank you!!

PLS HELP!!!!!!!ASAP PLS

Answers

Answer:

I think its c or D

Step-by-step explanation:

If its wrong im sorry

The lenten on a map states that 1 inch is 40 miles. If you measure 5 inches on the map, how many miles would the actual distance be?

Answers

Answer:  200 miles

===============================================

Work Shown:

(1 inch)/(40 miles) = (5 inches)/(x miles)

1/40 = 5/x

1*x = 40*5 .... cross multiply

x = 200 miles

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

We could also look at it like this:

1 inch = 40 miles

5*(1 inch) = 5*(40 miles) .... multiply both sides by 5

5 inches = 200 miles

Context: You and your friends go to the state fair. It costs $6 to get into the fair and $2 each time you go on a ride. Where do you see the y-intercept in the table and in the equation?​

Answers

Answer:

see below

Step-by-step explanation:

The y intercept is when x =0  

The equation is y =2x+6

The equation is in the form y = mx+b.  It is the constant added to the equation.

In the table it is the y value when x =0

The fuel for a chain saw is a mix of oil and gasoline. The label says to mix 5 ounces of oil with 11 gallons of gasoline. How much oil would you use if you had 22 gallons of gasoline?

Answers

Answer: 10 ounces

Step-by-step explanation:

Given

The label says to mix 5 ounces of oil with 11 gallons of gasoline

for 22 gallons of gasoline that is, double the previous amount, oil required would also be doubled.

Oil required would be 10 ounce.

a) Al triple de un número le restamos 9 y se obtiene 30, ¿cuál es ese número?

Answers

El numero es 13 porque 13x3= 39 y 39-9= 30.

A bag contain four black B) and
three R balls. The ball drawn from
the bag, without replacement. Find the
Proberbility of drawing the balls in
the Order B,R B,R B,R and B​

Answers

Answer:

6912 / 823,543 or approximately 0.8%

Step-by-step explanation:

4 black

3 red

7 total

P(B) = 4/7

P(R) = 3/7

4/7 x 3/7 x 4/7 x 3/7 x 4/7 x 3/7 x 4/7 = 6912 / 823,543

What is the measure of angle ABC?​

Answers

Answer:

A

Step-by-step explanation:

from a to b to c it makes the angle 75 degrees im 90 percent sure

Answer:

Step-by-step explanation:

ABC = (1/2)(75 +45)

ABC = 60º

2x-1+3x=0 5x-1=0 how can we get equation b from a

Answers

2x - 1 + 3x = 0
2x + 3x - 1 = 0
(2 + 3)x - 1 = 0
5x - 1 = 0

Rewrite one side (or both) by combining like terms.

What is equation?

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

2x – 1 + 3x = 0..........(A)

5x – 1 = 0................(B)

To get Equation B from A, we would rewrite one side (or both) by combining like terms

2x – 1 + 3x = 0

5x – 1 = 0

Learn more about equation here:

brainly.com/question/10413253

#SPJ7

Find the missing side

Answers

Answer:

Use Mathpapa to find using formula:

55^2+19^2=c^2

Step-by-step explanation:

I can't straightforward give you answers; it'll ruin your chances of going to university! Hopefully you learned the concept.

Out of 113 students, it was found that 18 drink neither tea nor coffee, 67 drink tea and 37 drink coffee.Find:
i) How many students drink coffee only?
ii) How many students like tea only?
Also show in the Venn diagram?​

Answers

Answer:

Step-by-step explanation:

Find the measure of /_2.

45°
120°
30°
90°

Answers

Answer:

45°

as triangle is right angled and inside a quater of a square it is isosceles

so both 2 and 3 are 45°

A man is now 3 times as old as his son. In 10 years time, the sum of their ages will be 76.
How old was the man when his son was born?​

Answers

Answer:

28

Step-by-step explanation:

A man is now 3 times as old as his son.

m = 3s

In 10 years time, the sum of their ages will be 76

(m + 10) + (s + 10) = 76

Subsitute for m = 3s

(3s + 10) + (s + 10) = 76

4s + 20 = 76

4s = 56

s = 14

m = 3s = 14 * 3

m = 42

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

How old was the man when his son was born?

m - s = 42 - 14

m - s = 28

. -5, 10, 7, 10, 9, 0, 1, 9, -1, 5 Work out the mean.

Answers

Answer:

6

Step-by-step explanation: because its online

I If the game with 3 hits is considered to be recorded in error, it might be removed from the data set. If that happens a. What happens to the mean of the data set? b. What happens to the median of the data set? plot data- 2(0) 3(1) 4(0) 5(0) 6(0) 7(2) 8(4) 9(5) 10(4) 11(4) 12(0) 13(0) .please help​

Answers

Answer:

If the game with 3 hits is ignored the data becomes:

7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11

a) The mean will increase.

With 3:

(3 + 7*2 + 8*4 + 9*5 + 10*4 + 11*4)/20 = 8.9

Without 3:

(7*2 + 8*4 + 9*5 + 10*4 + 11*4)/19 = 9.21

b) The median will remain as is.

With 3 and without the median is same = 9

I'm not good with cel, please help!

Answers

Answer: -25

Step-by-step explanation: Please give brainliest.

Answer:  -25 degrees Celsius

=========================================================

Explanation:

Draw a vertical number line. Plot -20 on it. Then move 5 units down to arrive at -25. Think of it as a thermometer where the temperature can be measured below 0 degrees, or you could think of it like floors of a building. Negative values would be basement floors.

The diagram below describes what's going on when we compute -20-5 = -25.

Ranking brainliest if correct !!!

Answers

Answer:

Step-by-step explanation:

Solve for x in the triangle. Round answer to the nearest tenth.

Answers

Answer:

6.3

Step-by-step explanation:

[tex]sin(\alpha)= \frac{O}{H}[/tex]

[tex]sin(44)=\frac{O}{9} \\O=9sin(44) \\O=6.25\\O=6.3[/tex]

Answer:

9.3

Step-by-step explanation:

9/ tg44 = 9.31677018634

Rounded by the nearest tenth= 9.3

Will give brainlist!!

Answers

Answer:

B

Step-by-step explanation:

Have a wonderful day

Answer:
The answer Is B

The sum of a number and its square is 12 . Find the number

Answers

Answer:

Two solutions

3

-4

Step-by-step explanation:

3 + 3²

3 + 9 = 12

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

-4  + (-4)²

-4 + 16 = 12

help appreciated !!!!

Answers

Answer:

Step-by-step explanation:

The circle is divided into 5 sections. The probability that the needle lands on a particular color is equally likely.

   So,

        [tex]P(red) = \frac{1}{5}\\\\P(green) = \frac{1}{5}\\\\[/tex]

   Probability of not blue = 1 - Probability of blue

                                      [tex]= 1 - P(blue)\\\\=1 - \frac{1}{5}\\\\= \frac{4}{5}[/tex]

find the value of x
7
17
x*

Answers

Answer:

the awnser is 24

the graph of x =-2 is a line parallel to the​

Answers

Answer:

If we know that the equation of the line [tex]x = -2[/tex] is parallel to the y-axis.

Step-by-step explanation:

The equation of a line parallel to the y-axis is of the form [tex]x = a[/tex], where [tex]a[/tex] is the x-coordinate of the point of the line passing through the x-axis. Then, if we know that the equation of the line [tex]x = -2[/tex] is parallel to the y-axis.

Anybody know the answer ?

Answers

Answer:

its a

Step-by-step explanation:

ans this equation pls

Answers

Answer

625

if this helped give brainliest and thanks!!

Answer:

625

Step-by-step explanation:

[tex](-2)^{4}[/tex]* ([tex]\frac{5}{2}[/tex])^4

16 * 5^4/2^4

16 * 625/16

10000/16

625

does anyone know how to do this ?

Answers

Answer:

i^85 = i

A way you can solve this is divide 85 by4

The remainder is one right? that means i^85 is the same as i^1. remember, i^1 = i.

I think it B it’s like simplifying imaginary numbers
Other Questions
Hi can someone please help me with this thanks Arianna earns a weekly salary of $400 plus a 6.5% commission on sales at a gift shop. How much would she make in a workweek if she sold $4800 worth of merchandise? What is the volume of the solid whose cross- sections are circular disks perpendicular to the x-axis and with diameters on the region bounded by the curves y = x and y=x^2? what is the area of the figure below? PLEASE HELP WITH THISFitness Resources In Your Community: Fitness is for LifeState one formal resource in you community eg gym/club, YMCA, Community centre (structured programs)Describe the programs available to you that you may be interested in. (3)How often are they offered per week? (1)Duration of the activity?(1)Membership requirements (3)Location (1) What is the difference between relative concepts and absolute concepts, and what do absolute and relative ideas negatively affect? Imagine you are reviewing a business plan. In which section of the business plan would you expect to find the answers to the following questions?Question Financial Statements Marketing & Sales Management Service or Product LineHow much money will the owners invest in the business start-up? How will the salespeople for this business be compensated? What are the unique features of this businesss merchandise? Two charged objects, A and B, are exerting an electric force on each other. What will happen if the charge on A is increased? . The charge on B will decrease.B. The charge on B will increase. C. The electric force between A and B will decrease. D. The electric force between A and B will increase. What category of sensor is a first responder likely to use to determine the oxygen level in a victim's blood? What could Vans do to keep its dealer network intact and supportive even after opening a corporate store in their market Drag each tile to the correct box.Match the narrative technique to the sentence that best demonstrates it.descriptionreflectiondialogueShe remembered how excited she had been when she startedher job. But now that feeling of excitement was gone."Aren't you excited to start your job today?" her motherasked. "It's really a great opportunity for you!"She was expected to write down the order carefully, filla box with the ordered items, and accept the paymentfrom the customer. 2021 Edmentum. All rights reserved.OO Economists generally agree that increases in the minimum wage increase employment.a. TRUEb. FALSE (adjective) Older people tire more easily.What is the adjective which process produce two genetically distinct haploid cells Discuss the challenges Middle East nations still face? What's the background of the night found poem balance the equationsH2+o2-H2oC+H2-Ch4CaCo3+HCL-CaCl2+Co2+H2o please help me I will mark as a brainliest The H substance is needed for the proper phenotypic expression of the A, B, and AB blood types in the ABO blood typing system in humans. Individuals who are recessive for the H substance (hh) will have a type O phenotype, even if they have the A and/or B alleles. Two individuals, each with type AB blood and heterozygous at the H locus have children. What is the probability they will have a child who is phenotypically type O? Is outline and rough draft the same?