Mathematics High School

Rewrite the equation by completing the square.
f(x)=x^2+x-30
f(x)=_(x+_)^2+_
pls helppppp

Answers

Answer 1

Answer:

f(x)= (x-5)(x+6)

Step-by-step explanation:

First, we find the factors of -30 that add up to +1

We can use 6 and -5

6+(-5)=1

f(x)= x^2+6x - 5x-30

then, we do group factorization

f(x)= x(x+6)- 5(x+6)

f(x)= (x-5)(x+6)

i hope this helps <3

Related Questions

Tbh I got no clue how to do this so help please

Answers

Answer:

I'm not entirely sure but I think you have to start by negative -1 and move back 4 spaces?

Step-by-step explanation:

the Red arrows is pointing towards the negative side of the number line

Three friends compare the balances in their checking accounts.

The balance in Al's account is $32.60.The balance in Dee's account is 34
the balance in Al's account.
The balance in Zac's account is $49.08 less than the balance in Dee's account.

What is the balance in Zac's account?

Answers

Is the balance is dee’s account 34% less then AL’s and also don’t trust anyone who tells you to click on a link it’s a virus

Can someone please. help Ill give branliesttttt

Answers

Answer:

3rd one!

Step-by-step explanation:

I think it’s B but I am not sure sorry dude

Can someone please help me?? It’s graphs using the Pythagorean theorem or something, the picture is shown. I’ll give you 30 points AND Brainly: )

Answers

I think it is 6,5 I don’t know

A. W,R,B

B. A,R,B

C. W,T,B

D. A,T,N

HELP ASAPP AND DONT GIVE ME A LINK BECAUSE THE LINK IS FAKE I NEED A REAL ANSWER !!!!

Answers

Answer:

B. A,R,B

Step-by-step explanation:

please mark this answer as brainliest

It takes 100 maple trees to make 20 gallons of maple
syrup. How many maple trees will it take to make one
gallon of syrup? Justify your reasoning.

Answers

5 trees per 1 gallon 100/20 = 5/1 = 5

please help me out :))

Answers

Answer:

144

Step-by-step explanation:

It rotates out of 360 degrees, and since it is a pentagon that rotates from two of its vertices, then 360/5 would give us the amount it is rotating from one vertice. So 72. Then multiply it by two because you are moving from e to b.

144

Jenny’s mom gave her one dollar on the day she was born. She plans to triple the amount she gives her every day. How much will she receive on her 10th day?

Answers

Answer:

19,683

Step-by-step explanation:

A number is increased by 5, and then squared. The expression which correctly represents this quantity is A) x + 25 B) x2 + 10 C) x2 + 25 D) x2 + 10x + 25 plz help its 20 points

Answers

Answer:

(x+5)^2

x^2+25

so it's C

wish it helped

The square below has an area of 64-16x+x^264−16x+x 2 64, minus, 16, x, plus, x, squared square meters. What expression represents the length of one side of the square?

Answers

Step-by-step explanation: Both 64 and x^2 are perfect squares, since 64=(8)^2 and x^2=(x)^2. Additionally, 16x is twice the product of the roots of 64 and x^2, since 16x=2(8)(x). So the side length of the square is 8-x meters

I think I don’t exactly remember don’t judge me

what is the answer of -13=15+d ?​

Answers

Answer:

d= -28..................

PLEASE HELP I really need help please heplp

Answers

Answer:

im not sure but i think its A

Step-by-step explanation:

Lucia compro 12 pares de media a 60 pesos cada una 7 remeras a 156 pesos cada una y 2 pantalones a 350 pesos cada uno.Si pago con 3000 pesos¿le sobro o le falto dinero?¿cuanto?

Answers

Answer:

A Lucia le sobró dinero y la cantidad que sobró es: 488 pesos.

Step-by-step explanation:

Para determinar si le faltó o le sobro dinero, debes determinar el costo total de lo que compró multiplicando el precio de cada artículo por la cantidad comprada y sumando estos valores:

(60*12)+(156*7)+(350*2)=720+1092+700=2512

Dado que pagó con 3000 pesos y el costo total de lo que compró es de 2512 pesos y este valor es menor que 3000 en 488 pesos, la respuesta es que le sobró dinero.

The rectangular prism shown is made up of unit cubes. Each unit cube has a length of one inch, a width of one inch, and a height of one inch. The volume of the rectangular prism is cubic inches. One unit cube is placed on top of each unit cube in the top layer. The volume of the new prism is cubic inches. Three layers of unit cubes are removed from the new rectangular prism. The final volume is cubic inches.

Answers

Answer:

cube" (and any subsequent words) was ignored because we limit queries to 32 words.

hello whats this ? ill give brainliest

Answers

Answer:

congruent

Step-by-step explanation:

90+90=180

so not 0 or 270

and complementary means they add up to 90 and none of that is true

so it has to be congruent

the answer is complementary

Gina deposits $2,000 into each of two savings accounts.


• Account I earns 5% annual simple interest.
• Account II earns 5% interest compounded annually.


Gina does not make any additional deposits or withdrawals. What is the sum of the balances of Account I and Account II at the end of 3 years?




PLS HELP ME. I WILL GIVE 40 POINTS.

Answers

Answer:

Simple interest:

$2000*(1 + 3*0.05) = $2300

Compound interest:

$2000*(1 + 0.05)^3 = $2315.25

Sum of the balances:

$2300 + $2315.25 = $4615.25

Someone help please!!! I don't understand. (20 points)

Answers

Perimeter = 198 cm24 + 21 + 6 + 37 + 41 + 37 + 11 + 21 = 198Area = 2,021 cm²CD = 37DE = 4137 x 41 = 1,517AB = 21HA = 2421 x 24 = 5041,517 + 504 = 2,021(2021 lol)

Five angles of a hexagon measure 119, 129, 104, 139 and 95 degrees. What is the measure of the sixth angle?

Answers

The final angle would be 134 degrees because a hexagon has 720 degrees. How you solve this problem is by adding all of the other angles and subtract the number you get from 720.

Which of the following is equal to g(x)?
A. 4(x – 2)
B. 4(x + 2)
C. 4x – 2
D. 4x + 2

Answers

It would probably be A

35% of f is 14. What is f? Enter your answer as a numeric expression.​

Answers

Answer:

40

Step-by-step explanation:

14/35 = f/100

35f = 14 x 100

f = 14 x 100 /35

f = 40

Answer:

40

Step-by-step explanation:

Well, 35% of 40 is 14, but I'm not confident on what it wants when it suggests to answer as a numeric expression. But, if it means in it's unadulterated, unsimplified, primitive nature, then sure, let me list the work below.

14/.35

There.

Which other expression has the same value as (-4) - (-8) ?

A. (-4) + 8
B. -4 - (-8)
C. 4 + (-8)
D. (-4 ) + (-8)

Answers

the answer is: A (-4)+8

Answer:

the answer is option (A) . (-4) + 8

I would like help on this math problem please!

Answers

Answer:

4^11

Step-by-step explanation:

[(4^3)(4^4)]÷(4^1+4^-4)

using laws of indices

(4^3)(4^4)=4^(3+4)

=4^7

(4^1 +4^-4)=4^(1-4)

=4^-3

4^7/4^-3,recalling about laws of indices if the exponentials are dividiy ,you subtract the powers give their base is equal

4^7/4^-3=4^(7-(-3)

=4^(7+3)

=4^11

To calculate the area of a triangle, you find the product of the base and height and then divide by 2.

Answers

Ok thanks for the answer

Answer:

Yes

Step-by-step explanation:

Prasad worked 15 hours this week and earned $195. Assuming he is paid by the hour, how much will Prasad earn next week if he is scheduled to work 12 hours?

Answers

Answer:

$156

Step-by-step explanation:

First you must find out the number of dollars Prasad receives per hour.

Since he earns $195 in 15 hours we can do 195/15 = 13 to find out the amount of dollars he earns per hour which is $13.

Next we must find out how much money he receives when he work for 12 hours so we simply do 13 (payment per hour) * 12 (amount of hours he works) which will give us $156!

This makes sense cuz 156 is a little bit less than 195 and ofc 12 is a little bit less than 15!

Prasad earn $156 next week if he is scheduled to work 12 hours

What is Ratio?

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

Prasad worked 15 hours this week and earned $195

We have to find the amount earned by prasad for work 12 hours

Let us form an proportional equation.

Let x be the amount earned for 12 hours

15/195 = 12/x

Apply cross multiplication

15x=195(12)

15x=2340

Divide both sides by 15

x=2340/15

x=156

Hence, Prasad earn $156 next week if he is scheduled to work 12 hours

To learn more on Ratios click:

https://brainly.com/question/1504221

#SPJ3

What is (x-7)(x-4) ????????

Answers

Answer:

x^2 -11x+28

Step-by-step explanation:

See Image below. I hoped this helped :)

hiii please help i’ll give brainliest:)

Answers

Answer:

oligarchy

Step-by-step explanation:

A regulation basketball has a diameter of 9.4 inches. What is the volume of the ball?

A) 19.69 in3
B) 92.53 in3
C) 434.89 in3
D) 3479.14 in3

Answers

B is the correct answer

NO LINKS!! PLSS HELP ME I WILL GIVE YOU BRAINLYEST!!

Mr. Hernandez bought 16 meters of
chain-link fencing. The section of his yard that
needs to be fenced is 50 feet long. Did Mr.
Hernandez buy enough fencing? Determine the
number of feet Mr. Hernandez still needs to buy
or how many extra feet he has purchased.
(1 meter = 3.28 feet.)

Answers

Answer:

well yes he has 2.4 extra

Step-by-step explanation:

1 meter is 3.28 feer so 3.28 x 16 is 52.4 and he only need 50.

hoped this hlepd and you have to give me brailyest. i just want to help...

Answer:

yes

Step-by-step explanation:

well we can just multiply the 3 with the 16

well now we have 48

add 28,     16 times which gives us 4.48

48+4.48 52.48

you have 2.48 feet left

and yes he has enough

now, about that deal.....

If using the method of completing the square to solve the quadratic equation
x² + 2x + 16 = 0, which number would have to be added to "complete the
square"?

Answers

Answer:

x=-1+\sqrt{15}i,\:x=-1-\sqrt{15}i

Step-by-step explanation:

For the given quadratic equation,x² + 2x + 16 = 0 the value of x will be x=-1+√15i, and x-=-1-√15i you must add 1 in order to complete the square.

What is a quadratic equation?

Any equation with the formula [tex]\rm ax2 + bx + c = 0[/tex] where x is a variable and a, b, and c are any real values; a quadratic equation is one where a ≠ 0.

It is given that the equation is, x² + 2x + 16 = 0,

The value of x obtained after solving the given equation is x=-1+√15i and x-=-1-√15i.

In order to complete the square you have to take out the following operations,

x² + 2x + 16 = 0

Add and subtract by 1 as

x²+2x+16+1-1

x²+2x+1 +15

(x+1)²+(√15)²

Thus, you must add 1 in order to complete the square.

Learn more about quadratic equations here:

brainly.com/question/17177510

#SPJ2

Pls help
Pls help
Pls help

Answers

Answer:

Step-by-step explanation:

this will be the outter circle minus the inner circle for the area of the sidewalk

area of circle = [tex]\pi[/tex][tex]r^{2}[/tex]

[tex]\pi[/tex][tex]11^{2}[/tex] = 380.1327

[tex]\pi[/tex][tex]9^{2}[/tex] = 254.469

380.1327 - 254.469 =125.6637062[tex]m^{2}[/tex]

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