Solve 2x²-8=0
A. X = 4
B. X = 2
C. x = 4, -4
D.x = 2, -2

Answers

Answer 1
X^2=4 take root of both

So option D

-2,2
Answer 2

Answer:

D. x=2, -2

Step-by-step explanation:

I think you're asking for the correct answer to the problem because all of the values for x won't work for the equation.

So all we have to do is simplify the equation to isolate x.

[tex]2x^2-8=0[/tex] (original problem)

[tex]2x^2=8[/tex] (add 8 to both sides)

[tex]x^2=4[/tex] (divide both sides by 2)

[tex]x=2, x=-2[/tex] (find the square root of both sides)

Note that x = ±2 and note just 2 because both [tex]2^2[/tex] and [tex](-2)^2[/tex] [tex]=4[/tex].

Hope this helped :D


Related Questions

Please everything that I put on this app no one has answered I’m just wasting points now

Answers

Answer:

QR=18

Step-by-step explanation:

QR/QO =QS/QP (proportionality theorem...OP||RS )

QR/39 =24/52

52QR = 24(39)

52Q2=936

QR=18

What is the value of b for b2 = 36/64

Answers

answer is C: 6/8

solve with square roots

Evaluate: (-2)5

10
32
-10
-32

Answers

( - 2 ) 5
Answer ( -10)

Answer:

-32

Step-by-step explanation:

-2 x -2 x -2 x -2 x -2 = -32

What is the value of y? In the coordinate plane below, AABC is similar to ADEF A) 3 B 4 E (-8, 8) -2 D B D 11-2, 2) F(-8, 2) LA (0,0) (40)​

Answers

Answer:

use the formula y2-y1/x2-x1 in order to find your answer for each coordinate

Step-by-step explanation:

Answer:

ADEF is correct

Step-by-step explanation:

how was ur day

which answer choice represents an expression?

Answers

Answer:

The answer is G. The sum of r and 4 minus t

Step-by-step explanation:

It is G because an expression has no equal sign or answer, an equation has an answer.

Find the product
Give your answer in simplest form.
3/5x12



Answers

The origainal answer is 36/5 but the simplest form is 7 1/5
it’s 7 1/5 in simplest form


Work out the area of this quarter circle of radius 8 cm.
Give your answer in terms of pie .

Answers

Answer:

[tex] 16\pi \: {cm}^{2} [/tex]

Step-by-step explanation:

[tex]A = \frac{90 \degree}{360 \degree} \times \pi ({8})^{2} \\ \\ A = \frac{1}{4} \times \pi \times 64 \\ \\ A = \frac{1}{4} \times 64\pi \\ \\ A =16\pi \: {cm}^{2} [/tex]

hello please help thanks

Answers

Answer: transpiration

Step-by-step explanation:

Answer: precipitation

Step-by-step explanation: since that’s when something is fallen from the sky such as rain snow or hail

Workout the median of 83,73,76,72,75,86,79,76

Answers

the median is 76

explanation:
The median is the central number of a data set. Arrange data points from smallest to largest and locate the central number. This is the median. If there are 2 numbers in the middle, the median is the average of those 2 numbers.

Answer:

76

Step-by-step explanation:

Put the numbers in order from least to greatest.

72, 73, 75, 76, 76, 79, 83, 86

Then, cross off each number at each end until you reach the one in the middle. Which, since they are the same, is 76.

The number line represents 1 unit. What is the distance from 0 to point C on the number line?
A) 5/2 units
B) 4/5 units
C) 3/10 units D) 4/10

Answers

4/10 Units. The number line is cut equally into 10 pieces. If you count correctly, you’ll find out point C is on the 4th spot (I couldn’t remember its name sorry)

HELPPPPPOO MEEEEE 2.0

Answers

Answer:

I think the answer would be 60

Hope it was helpful .

Step-by-step explanation:

400 × 0.15 = 60

You are entering a fitness competition at school. Students train for several weeks to win prizes for different competition. 2) Last years winner set a school record by completing 37 sit-ups. You need to find out how many weeks you need to train to beat this record. Part B: Write the inequality and graph the solution. How many weeks will it take you to break the record?

Answers

Answer:

first you divide 2by 37 that will be the answer

What is the value of x?

Answers

Answer:

the answer is 4

Step-by-step explanation:

if you cut the ends off you will get you answer

Samantha made goodie bags for Valentines day. They were filled with choclates and candy.The cost of the chochlate was $2.50 per pound and the cost of the candy was $3.oo per pound. Samantha bought 15 pounds of choclate and candy for a total of 40 dollars. How much did Samantha buy

Answers

Answer:

We bought 10 Pounds of Chocolate, and 5 Pounds of Candy.

Step-by-step explanation:

Hey!

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

Let's make a chart!

                 Lbs     Price  Cost

Chocolate | x      | 2.50 | 2.50x

Candy       | 15-x | 3.00  | 3.00(15-x)

Equation:

2.50x + 3.00(15-x) = 40

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

⇒ 2.50x + 3.00(15-x) = 40

-Distribute 3 over 15-x

⇒ 2.50x + 45 - 3x =40

-Combine Like Terms

⇒ -0.5x + 45 = 40

-Subtract 45 from both sides.

⇒ -0.5x + 45 = 40

            -45   -45

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

⇒ -0.5x = -5

-Divide by -0.5 on both sides

⇒ -0.5x/-0.5 = -5/-0.5

x = 10

That means we bought 10 Pounds of Chocolate.

---------------------------------------------------------------------------------------------------------------Since Candy was 15-x, we can Substitute 10 as x, and Solve:

⇒ 15 - 10

⇒ 5

That means we bought 5 Pounds of Candy.

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

We bought 10 Pounds of Chocolate, and 5 Pounds of Candy.

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

Hope I Helped, Feel free to ask any questions to clarify :)

Have a great day!

More Love, More Peace, Less Hate.

       -Aadi x

the sum of a number x and 7 is 35

Answers

The answer is 5 hope this helps

An expression is defined as a set of numbers, variables, and mathematical operations. The value of x that will satisfy the given statement "the sum of a number x and 7 is 35" is 28.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

Given the statement that the sum of a number x and 7 is 35. Therefore, the given statement "the sum of a number x and 7 is 35" in the form of an expression can be written as,

x + 7 = 35

Subtract 7 from both the sides of the equation,

x +7 - 7 = 35 - 7

x = 28

Hence, the value of x that will satisfy the given statement "the sum of a number x and 7 is 35" is 28.

Learn more about Expression:

https://brainly.com/question/13947055

#SPJ5

Yo pls help me out, the question is on the picture.
ill mark brainliest if its correct. NO LINKS!

Answers

It would be 27.2, cos(54)=16/x

Based on the data from your previous 10 catches, what is the chance your next catch will be a pink salmon?

Answers

Not very likely, way more of the other two fish.

The table of ordered pairs (x, y) gives an exponential function.
Write an equation for the function.
y
- 1
6
0
12
1
24
2
48

Answers

Answer:

f(x) = 12*(2)^x

Step-by-step explanation:

A generic exponential equation is written as:

f(x) = A*(r)^x

And we also know that this equation passes through:

(-1, 6)

(0, 12)

(1, 24)

(2, 48)

For the second point, (0, 12) we know that when f(0) = 12

Then:

f(0) = 12 = A*(r)^0

And for every real number different than zero, a^0 = 1

Then:

f(0)  = A*1 = A = 12

Then the equation is:

f(x) = 12*(r)^x

Now we can use one of the other points, like (1, 24)

Then f(1) = 24

We can solve:

f(1) = 24 = 12*(r)^1  = 12*r

24/12 = r

2 = r

Then the equation is f(x) = 12*(2)^x

Now we need to check if this function also passes through the points (-1, 6) and (2, 24):

f(-1) = 12*(2)^-1 = 12/2 = 6

f(2) = 12*(2)^2 = 12*4 = 48

Nice.

So we can see that the function is f(x) = 12*(2)^x

You buy a pair of jeans for $32.00. The sales tax is 6%. How much will you have to pay?

Answers

Answer:

$33.92 ($1.92 in tax)

Step-by-step explanation:

% values are 1/100ths. 32.00/100=0.32. 0.32(6) = 1.92.

 $32.00

+   $1.92

=$33.92 total.

Consider the density curve below.

Find the probability that x is more than 3.
P(x > 3) =

Answers

Answer:

60%

Area=1/2 (base)(height)

Area=1/2(2)(0.6)

Area=0.6

0.6=60%

19. y = 3x? - 12x

Find the discrimanite of each equation.Then,determine the number of solution

need help with this step by step please and thank you

Answers

Answer: y=−9x  

x=  y/9

​  

 

Step-by-step explanation:

Write an equation for the line, in point slope form given the following information
Slope = 1/4 contains the point (8,-3)

Answers

Answer:

y+3=1/4(x-8)

simplified -> y+3=1/4x-2

Step-by-step explanation:

y-y1=m(x-x1)

y-(-3)=1/4(x-8)

y+3=1/4(x-8)

If you want it to be further simplified

y+3=1/4x-2

Help.........................

Answers

Same I say D is the answer too

I NEED HELP ASAP PLEASE!! I WILL AWARD BRAINLIEST
NO LINKS PLEASE AND NO WEIRD ANSWERS PLEASE I HAVE A TEST TOMMAROW
DO AS MANY AS YOU WANT
I AWARD BRAINLIEST

Answers

9514 1404 393

Answer:

x ≥ 754 -6my -x

Step-by-step explanation:

You have to realize that the absolute value function will change the sign of its argument only if that argument is negative.

108. |x -7| = x -7 . . . . . true for x-7≥0

  x ≥ 7 . . . . makes the statement true

__

1a. When m < 9, the value 6m is less than 54, so 6m-54 < 0. That means the absolute value function changes the sign of its argument:

  54 -6m . . . . . simplified form for m < 9

__

1b. |y -x| = y -x . . . when y > x, the argument of the absolute value is positive

What is the probability of scoring more than 3

Answers

Answer:

3 what?

Step-by-step explanation:

2x2 – 5xy – 6 + 4x2 – 3xy + 1 – x2y

Answers

Answer:

− x 2 y − 8 x y + 6 x 2 −5

Step-by-step explanation:

was i support to simplify? bc that's what i did

Please see attached to answer 1-7.


Please tell me how to do all of them.

Answers

https://apps.apple.com/us/app/jamboard/id1143591418

Examine the diagram. A triangle has angles A, 15 degrees, 80 degrees. The exterior angle to angle A is B. What is the sum of the remote interior angles? ° What is the measure of ∠A? m∠A = ° What is the measure of ∠B? m∠B = °

Answers

Answer:

m<A = 30degrees

m<B = 70degrees

Step-by-step explanation:

Find the diagram attached

From the diagram;

m<A + 150 = 180

m<A = 180 - 150

m<A = 30degrees

Also since the sum of angles in a triangle is 180degrees, hence;

m<B+m<A + 80 = 180

m<B+30+80 = 180

m<B+110 = 180

m<B = 180 - 110

m<B = 70degrees

Answer:

C 95

A 85

C 95

Step-by-step explanation:I GOT IT RIGHT TRUST ME

2>10+4n how would you graph this

Answers

2>10+4n
-8>4n
-2>n
Answer is n<-2
Your point -2 should be an open circle on the graph and the arrow should be pointing to the left

Write an expression that represents the
perimeter of this picture frame.

Answers

Answer:

6x+2

Step-by-step explanation:

The perimeter is all of the sides added together.

We know that in a rectangle, sides that are parallel to each other are the same.

So, to find the expression that represents the perimeter, you have to multiply 2x+1 by 2 and x by 2 and add both of those together.

(2*(2x+1))+(2*(x))

(4x+2)+(2x)

4x+2+2x

6x+2

Other Questions
Select the correct factor from the presentation and calculate how many calories used. (Round to the hundredths.) A person weighing 174 lbs. jogs 1 mile in 10 minutes.A). 107.88B). 113.10C). 267.69D). 280.65(I'd really appreciate it if you could show me how you got your answer and why it works like that. I'm a bit stumped on how to do this part) PLEASE HELP ME (URGENT)!!!!!EXTRA POINTS WILL BE GIVEN TO THE BRAINLIEST ANSWER!!! WILL GIVE BRAINLIESTA Ferris wheel has a diameter of 212 feet. How far will one passenger travel in one revolution of the wheel? Explain your answer Find mPlz I need helped 40% of sales at supermarkets in the carry the stores' own brand names. 20% of all supermarket sales in carry the stores' own brand names. And in the United States, 14% carry the stores' own brand names. These stores use a __________ strategy to sell other manufacturers' products with their own brand names. generic branding multibranding co-branding private branding multiproduct branding diferencia entre la oracin unimembre y la bimembre, como se pueden identificar, y ejemplos? Checklist: Running for Public Office Have a passion for the issues Have sufficient time and money Choose the appropriate officeWhich item best completes the list?A. Have experience with the mediaB. Be at least 35 years oldC. Know the requirements for the political office you wantD. Have previous experience in politics Impersonation is when you pretend to be someone you are not, online.True or false Which option best describes the information in the audio? (1 point) There are many types of paints that an artist can use like acrylic, oil and watercolor. The type of paintbrush an artist uses depends on what kind of paint you use. You can use any type of paintbrush with all the different types of paints. An artist should choose the type of canvas they want to use before choosing the paint. How were women discriminated against in the workplace? We wish to determine the proportion of small- to medium-sized streams in eastern North Carolina which have runoff from hog farms in order to prepare for issues arising from water quality in the aftermath of hurricanes. A random sample of 174 small- to medium-sized streams is selected and it is found that 100 of them have runoff from hog farms. Which of the following is the value of the parameter of interest in this setting?a. 0.02322.b. 0.240.c. 0.760.d. the value of the parameter of interest cannot be determined from the given information. Find the conjunction, and drag it to the grey box!You can choose the teddy bear or the sheepYoubearcanchooseOrsheepteddythe Eddie is wondering which parts of the Sun-Earth-Moon system rotate. What should you tell Eddie? A. Only the Sun and Earth rotate. B. The Sun, Earth, and Moon rotate. C. Only the Earth rotates. D. Only the Moon rotates. please help i am giving brainliest Check s if the statement makes sense. Check no if it does not make sense.1. s no Hay velas en un regalo.2. s no Siempre recibo uno o ms regalos para mi cumpleaos.3. s no A mucha gente le gusta comer cacahuates con galletas.4. s no Un boleto para el cine o un concierto es una entrada. 5. s no Los msicos tocan instrumentos musicales y los cantantes cantan.no dam links If you put a link i will hack your brainliy account Zoe drew s sketches of flowers. She split them evenly among her 10 pen pals. Write an expression that shows how many sketches each pen pal received. which statment about cesar chavezs actions in support of farm workers in california is true Which of the following is NOT a way that fungireproduce?A. asexually through spores dropping and growingB. a piece of the hyphae breaks off, lands, and starts growingC. the spores travel by wind to a different mushroom that getsfertilized and sprouts a new mushroomD. the hyphae of a plus and minus fungi come together and thenuclei fuse and start to grow together THIS IS URGET PLEASE HELP IKK GIVE BRAINIEST!!! the popularity of ______ increased as it became more affordable for consumers. a. radios b. cars c. houses d. televisions Who would lead the American Cavalry Unit into this big battle that would take place on June 25th, 1876?A. General HowardB. General SheridanC. General CusterD. General Sherman