what number must i add to complete the square x^2+8x=-3

Answers

Answer 1

Answer:

16

Step-by-step explanation:

(b/2)^2

(8/2)^2 = (4)^2 = 16

(x^2+8x+16) = -3+16

(x+4)^2 = 13

so on so forth, but basically you add 16 which completes the square


Related Questions

Which is the graph of f(x) = 2(3)x ?

Answers

Answer:

A

Step-by-step explanation:

the rest are inccorect

The value of k is represented by the equation

Answers

option 3 ) the value of k is represented by the equation

What is the greatest
common factor (GCF)
of 25 and 75?

Answers

Answer:

25

Step-by-step explanation:

Answer:

GCF is 25

Step-by-step explanation:

Here's a great calculator for this! glad i could help.

https://www.mathsisfun.com/greatest-common-factor-tool.html

use two multipliers to convert 81 square feet to square yards

Answers

9 square yards..........

brainliest goes to whoever answers the question correctly also if you want more points answer my other questions

Answers

Answer:

y = 0.35x + 18.99

Step-by-step explanation:

our y intercept is 18.99 bc thats what we start with at 0 letters

then our b or slope is 0.35 bc thats how much each letter costs. you can find it by subtracting 2 letters from 1 letter ( 19.69 - 19.34 = 0.35)

hope this helps <3

Terrance is designing a garden. He drew this diagram of his garden. Pose a problem using mixed numbers that can be solved using his diagram.

Answers

Answer: 2

Step-by-step explanation:

Solve for x.
2x + 24
3x - 26
x = [?]

Answers

Answer:

set them equal to eachother, i gotta look at my notes tho

Step-by-step explanation:

I think it's like this

3x-26=2x+24

We simpilfy the equation to the form which is simple to understand.

3x-26=2x+24

We move allterms containing X to the left and all others terms to the right

+3x-2x=+24+26

We simplfiy left and right sideof the eqution.

+1x=+50

We divide both sides of the equation by 1 to get x.

x=50

Jess says that two of the three points below are on a line through the origin.
(3.8), (6, 21), and (9, 24)
Part A
Which two points could lie on the same line through the origin? Explain why. Explain why
the third point could not.
* I will give brainliest*

Answers

Answer:

(3, 8) and (9, 24) lie on the same line through the origin.

because (9, 24) is the result of dilatation of (3, 8) with scale factor 3.

(6, 21) is not the result, because 21 ≠ 2×8, even 6 = 2×3

The membership fee at a sports club was $600 per year. Each year, the membership fee increased by 7%. The cost of membership, y, can be modeled by the equation y=600(1.07)^x, where x is the number of years.
How many years will it take for the cost of the membership to be $900?

Choose the answer that gives the correct logarithmic equation and answer.


x=log1.5(1.07)

x=6


x=log1.07(1.5)

x=6


x=log(1.51.07)

x=1


x=log(1.071.5)

x=1

Answers

Answer:

x = log1.5/log1.07

x = 6

Step-by-step explanation:

900 = 600(1.07)^x

Divide both sides by 600

1.5 = 1.07^x

Take the log of both sides

log1.5 = x log1.07

Divide both sides by log1.07

log1.5/log1.07 = x

x = log1.5/log1.07

use calculator

x = 6

brainliest goes to whoever answers the question correctly

Answers

Answer:

The answer is option A.

Step-by-step explanation:

A. y = 8/7x +5

can some one multiply (x+11)^2

Answers

Answer:

x^2 + 22x + 121

Explanation:

Casey polled 50 seventh grade students. He asked who they planned to vote for as class president. Thirty students said they would vote for Lynne. Twenty said they would vote for Marcus.
Use this probability to predict how many seventh graders in their class of 450 students will vote for Lynne

Answers

Answer:

270 students

Step-by-step explanation:

First, you need to do a ratio.

30          x

-------  = --------

50           450

In order to solve this, you need to multiply 450 times 30 and that equals 13500. 13500 divided by 50 is 270. That means that about 270 students will vote for Lynn.

Some hep I’m taking a test final

Answers

x is 38°, just like the opposite one

Answer:

x is 38............ .........

What is the domain ????????

Answers

Answer:

The domain of a function is the set of all possible inputs for the function.

Step-by-step explanation:

For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.

Hope this helped!

Find the missing parts

Answers

Answer:

a is the same as c b and d/8 are the same so b=8  

Step-by-step explanation:

Answer:

you are missing B = 8

Step-by-step explanation:

if this is helpful please like this i need points

What is the slope of the line that
passes through these two points?
(-3, 4)
(5, 4)
rise (y2-yı)
Remember, Slope =
run (x2-x1)
Simplify your answer completely.

Answers

I think it might be 0?

please i need this 1/3 x 1/3

Answers

it is 1/9 because one of her 1/3 * 1/3 is 1/9

select the three correct answers

Answers

Answer:

B

Step-by-step explanation:

B because the figure would simply be rotated and reflected. still the same shape and size as the original making it congruent

A library receives 413 boxes of books and 125 boxes of magazines. There are 18 books in each box of books. How many total books did the library receive?

? x 18 = ?​

Answers

Answer: 7434 books

Step-by-step explanation:

413 x 18= 7434

7434 books is what the library receives

There is a bag of tiles where 8 are red, 5 are blue, 4 are orange, and 3 are green. If one is picked at random, replaced, and another marble is picked, what is the probability that they are both orange? in a percent or fraction

Answers

Answer:

There would be 1/25 chance (4%).

Step-by-step explanation:

So there's 4 orange marbles and there's 20 total marbles since:

8 Red + 5 Blue + 4 Orange + 3 Green

With this, the chance of drawing an orange marble is 4/20, or 1/5. Because the marble is replaced back after being picked, the same chance would occur for the second picking.

To combine these chances, multiply them together for the answer.

1/5 * 1/5 = 1/25 (4%)

8+5+4+3=20
(1/20)*(1/20)=1/40

Write the equation of the line in slope-intercept form that has a slope of -1/2 and goes through the point (2,3)

Answers

ANSWER : y=-1/2x+4
Y=mx+c
Gradient = y2-y1/x2-x1
Gradient = -1/2 as mentioned
y=-1/2x+c
Pick (2,3) 2 as x variable and 3 as y
3=-1/2(2)+c
3=-1+c
3+1=c
4=c
Equation y=-1/2x+4

If someone saved $0.85 every day for 40 years how much money do they have today?(365 days a year.)

Answers

12,410 i think lol but i’m not great at math

Answer:

12,410

Step-by-step explanation:

.85 x 365 = 310.25

310.25 x 40 = 12,410

Name a point that is not contained in any of the 3 lines a, b, or c​

Answers

I would say W because he’s just all alone chillin in the corner not touching a, b or c lines.

Priya, variable "p", jumped 3 inches more than Xeno, “x”, in a high jump contest. Mai, “m”, jumped three times as many inches higher than Priya. If Mai jumped 14 inches, how many inches did Xeno reach? (You can use a tape diagram or hanger diagram to help solve this problem). ***EXPLAIN how you found your answer below:

Answers

Answer:

Xeno jumped 1 2/3 in

Step-by-step explanation:

if Mai jumped 3 times higher than Priya dividing Mai's 14 by 3 would get Priya's height. Then by subtracting 3 from Priya's height, which is 4 2/3, you get Xeno's height which is 1 2/3 in

Find the 8th term 50,20,8

Answers

Answer:

0

Step-by-step explanation:

Answer:

0.08192

Step-by-step explanation:

Given 50, 20, 8, ...

The sequence is geometric in nature

The nth term of the geometric sequence is exoressed as;

Tn = ar^{n-1}

a is the first term = 50

r is the common ratio = 20/50 = 8/20 = 2/5

n is the number of term = 8 (since we need the 8th term)

Substitute

T8 = 50(2/5)^{8-1}

T8 = 50(2/5)^7

T8 = 50(128/78,125)

T8 = 0.08192

Hence the 8th term is 0.08192.

Someone help me pls

Answers

Answer:

b^5

Step-by-step explanation:

Answer:

The answer will be b5

Step-by-step explanation:

Multiply b-6 by b11 by adding the exponents

Identify this quadrilateral.

Answers

Answer:

it is a parallelogram. because both sides are parallel

John needs 5 yards of fabric. The store sells fabric for $3 a foot. How much will it cost John to buy the fabric?

Answers

Answer:

Cost of 5 yards of fabric = $5

Step-by-step explanation:

Cost of one foot fabric = $3

John needs fabric = 5 yards

Since, 1 yard = 3 foot

Therefore, 5 yards = 3 × 5

                               = 15 foot

Total cost of fabric = total length of fabric × Cost of 1 foot fabric

                               = 15 × 3

                               = $45

5 yards of fabric will cost $45.

What is the measure of the arc from A to B that does not pass through C?

a. 160 degrees
b. 140 degrees
c. 100 degrees
d. 90 degrees

Answers

Answer:

a

Step-by-step explanation:

Can someone help me out on all three questions I’d appreciate ittt

Answers

Answerilll help ya so it's a

Step-by-step explanation:

Answer:

use desmos graphing calculator

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