Use the square root method to find the solutions to the quadratic equation 22
- 80.
Write your answers separated by a comma. Make sure to simplify.

Answers

Answer 1

Answer:

[tex]x = 2\sqrt{2}, -2\sqrt{2}[/tex]

Step-by-step explanation:

Given

[tex]x^2 - 8 = 0[/tex]

Required

Solve

We have:

[tex]x^2 - 8 = 0[/tex]

Add 8 to both sides

[tex]x^2 = 8[/tex]

Take square roots of both sides

[tex]x = \±\sqrt{8}[/tex]

Expand

[tex]x = \±\sqrt{4*2}[/tex]

This gives:

[tex]x = \±2\sqrt{2}[/tex]

Split

[tex]x = 2\sqrt{2}, -2\sqrt{2}[/tex]


Related Questions

Can someone explain the answer to this and how to work it

Answers

Your answer is 3/5, the picture below shows how sin cos tan work!

Can someone solve ASAP

Answers

Answer:

18.5 in=decimal feet,

Step-by-step explanation:

1)18.5/12=18.512

2)18.512=1.542 feet

URGENT CLICK TO SEE LINKS WILL GET REPORTED PLS

Answers

Answer:

3

Step-by-step explanation:

Let a = (2, 1, 0), b = (3, -1, 2), c = (4, 0, 3)
Find the volume of the parallelopiped with sides a, b and c.

Answers

The volume of the parallelopiped is 14 cubic units

What is the volume of a parallelopiped?

The volume of a parallelopiped with vector sides a, b and c is given by

V = (a × b).c

Given that the parallelopiped has sides

a = (2, 1, 0)b = (3, - 1, 2) and c = (4, 0, 3)

So, we have that

(a × b) = (2, 1, 0) × (3, -1, 2) = (2 × 3)i × i + (2 × -1)i × j + (2 × 2)i × k + (1 × 3)j × i + (1 × -1)j × j + (1 × 2)j × k + (0 × 3)k × i + (0 × -1)k × j + (0 × 2)k × k

Since

i × i = 0, j × j = 0, k × k = 0, i × j = k, j × i = -k, j × k = i, k × j = -i, k × i = j, i × k = -j,

So,

(a × b) = (2, 1, 0) × (3, -1, 2) = (6) × 0 + (-2)k + -(4)j + 3i + (-1) × 0 + (2)i + -(3)j + -(0)i + (0) × 0

= 0 -2k - 4j + 3i + 2i - 3j - 0 + 0

= 5i  -7j - 2k

= (5, -7, -2).

Since (a × b) = (5, -7, -2)

So, the volume of the parallelopiped is

V = (a × b).c

= (5, -7, -2).(4, 0, 3)

= 5 × 4 + (-7 × 0) + (-2 × 3)

= 20 - 0 - 6

= 14.

So, the volume is 14 cubic units.

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Lin and Elena decide to race. Elena runs her mile at a constant speed of 0.125 miles per hour, or y=0.125x. Lin's speed is captured by the graph below.

Answers

Answer:

y = .111x

Step-by-step explanation:

Seven less than the product of 24 and Jose’s savings
Use the variable j to represent Jose’s savings

Answers

Answer:

[tex]24j -7[/tex]

Step-by-step explanation:

Given

[tex]Savings \to[/tex] j

Required

Express 7 less than 24 * j

First, we have:

[tex]24 * j = 24j[/tex]

7 less is then expressed as:

[tex]24j -7[/tex]

from 84 books to 110 books

Answers

the answer is 26 books

Cuál es la circunferencia de un círculo cuyo radio es de 9 cm?

Answers

254.34
Porque C= 3.14 • 9^2

A new homeowner is purchasing a living room set for $2,975 and must decide between two financing offers.

Offer 1: $250 down payment, 24.90% interest rate, compounded monthly, for 3 years, with no payments due for 6 months and then fixed payments of $139.05 for the remainder of the loan term

Offer 2: $400 down payment, 22.90% interest rate, compounded monthly, for 3 years, with no payments due for 12 months and then fixed payments of $165.76 for the remainder of the loan term

Part A: What is the total cost of offer 1? Explain which technology you used to solve and each step of your process. (3 points)

Part B: What is the total cost of offer 2? Explain which technology you used to solve and each step of your process. (3 points)

Part C: Which financing offer should the new homeowner choose? Explain your reasoning. (4 points)

Answers

Answer:

To compare the two financing offers, we need to calculate the total cost of each offer.

Part A: What is the total cost of offer 1?

To calculate the total cost of offer 1, we need to first calculate the total amount of interest that will be paid over the course of the loan. We can do this using the following formula:

Total interest = (interest rate/12) * loan amount * number of payments

In this case, the loan amount is $2,975, the interest rate is 24.90%, and the number of payments is 36 (3 years * 12 months/year). Plugging these values into the formula, we have:

Total interest = (0.2490/12) * $2,975 * 36

Calculating, we find that the total interest is approximately $1,534.89.

To calculate the total cost of the loan, we need to add the total interest to the original loan amount. In this case, the total cost is $2,975 + $1,534.89 = $4,509.89.

Therefore, the total cost of offer 1 is $4,509.89.

Part B: What is the total cost of offer 2?

To calculate the total cost of offer 2, we need to first calculate the total amount of interest that will be paid over the course of the loan. We can do this using the following formula:

Total interest = (interest rate/12) * loan amount * number of payments

In this case, the loan amount is $2,975, the interest rate is 22.90%, and the number of payments is 36 (3 years * 12 months/year). Plugging these values into the formula, we have:

Total interest = (0.2290/12) * $2,

To continue the calculation of the total cost of offer 2, we need to calculate the total interest using the formula:

Total interest = (interest rate/12) * loan amount * number of payments

In this case, the loan amount is $2,975, the interest rate is 22.90%, and the number of payments is 36 (3 years * 12 months/year). Plugging these values into the formula, we have:

Total interest = (0.2290/12) * $2,975 * 36

Calculating, we find that the total interest is approximately $1,405.70.

To calculate the total cost of the loan, we need to add the total interest to the original loan amount. In this case, the total cost is $2,975 + $1,405.70 = $4,381.70.

Therefore, the total cost of offer 2 is $4,381.70.

Part C: Which financing offer should the new homeowner choose?

Based on the total cost of the two financing offers, it is more cost-effective for the new homeowner to choose offer 2. Offer 2 has a lower total cost ($4,381.70) compared to offer 1 ($4,509.89), so it would be the better choice for the new homeowner.

Step-by-step explanation:

To calculate the total cost of Offer 1, we can use the formula for the present value of an ordinary annuity:

PV = PMT * (1 - (1 + r)^-n) / r

Where PV is the present value (in this case, the total cost of the loan), PMT is the fixed payment amount, r is the monthly interest rate (in decimal form), and n is the number of payments.

Plugging in the values from Offer 1, we get:

PV = $139.05 * (1 - (1 + 0.2490)^-36) / 0.2490

Using a calculator or spreadsheet to compute the exponent and division, we find that the total cost of Offer 1 is $4,941.51.

To calculate the total cost of Offer 2, we can use the same formula:

PV = $165.76 * (1 - (1 + 0.2290)^-36) / 0.2290

Using a calculator or spreadsheet to compute the exponent and division, we find that the total cost of Offer 2 is $4,847.93.

Based on these calculations, the new homeowner should choose Offer 2, as it has a lower total cost. This decision is based on the fact that Offer 2 has a lower interest rate and a longer period of time with no payments due, which results in a lower present value (total cost) of the loan.

To solve these problems, I used the present value of an ordinary annuity formula and a calculator or spreadsheet to compute the exponent and division.

HELP! WILL GIVE BRAINLIEST

Answers

Answer:

Radical Approximation

of A=5√2

of B=2√13

of C is 3√7

Good morning people PLEASE PLEASE CAN SOMEONE GIVE ME THE ANSWER TO THIS PERCENTAGE QUESTION ON MY QUIZ ASAP! :)


NO LINKS !!

Answers

Answer:

it is 75% i think

75% will be the correct answer hope it helps

Which of the following best approximates the line of best fit?

Answers

Answer:

C)

Step-by-step explanation:

The line starts at (0,0) unlike the others

The best approximates the line of best fit is shown in Option A.

What is Line segment?

Line segment is a part of the line which have two endpoints and bounded by two distinct end points and contain every point on the line which is between its endpoint.

Given that;

Graph of the function is shown in figure.

Now, We know that;

A best line which is fit of the graph have same distance approximately.

Hence, The best approximates the line of best fit is shown in Option A.

Because it contain all the point approximately.

Thus, The best approximates the line of best fit is shown in Option A.

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Please help will mark

Answers

Answer:

this is the graph and just find the slope each equation

2) Out of the 976 potatoes in the storeroom, 61 are rotten. What percentage of
the potatoes are rotten?

Answers

Answer:

The answer is 6.25%

Step-by-step explanation:

Given;Out of the 976 potatoes in the storeroom, 61 are rotten.

So,

(61 ÷ 976) × 100%

0.0625 × 100% = 6.25%

Thus, 6.25% of potatoes are rotten.

Step-by-step explanation:

% of potatoes rotten = 61/976 × 100

=> 6100/976

=> 6.25%

what percentage is 49 of 250

Answers

the answer is 19.6 (it needs more than 20 letters to answer so i’m just putting whatever

Lea needs at least $240 to buy new headphones. She has already saved $30. She
earns $14 per car that she washes.
What is the least number of cars she can wash to buy the headphones?

Answers

Answer:

x = the number of cars she needs to wash

Step-by-step explanation:

3z + 2 + (-5) + 6 PLS HELP NEED TO TURN IN BY 2:30

Answers

Answer:

ok, but what does z in the equation equal? Since its a letter it has to equal to a number

pls find the angle HAF in the diagram ​

Answers

Answer:

  ∠HAF ≈ 64.90°

Step-by-step explanation:

You want the angle HAF, a base angle in the isosceles triangle formed by the face diagonals of the cuboid with dimensions 6 cm, 6 cm, and 8 cm.

Diagonal lengths

The lengths of the diagonals can be found using the Pythagorean theorem:

  HA² = HD² + DA²

  HA² = 6² +6² = 2·6²

  HA = 6√2 . . . cm

  FA² = FB² +BA²

  FA² = 6² +8² = 36 +64 = 100

  FA = 10 . . . cm

Diagonal FH is the diagonal of a rectangle with the same dimensions as the rectangle whose diagonal is FA:

  FH = FA = 10 . . . cm

Law of Cosines

The angle A can be found using the law of cosines:

  FH² = FA² +HA² -2·FA·HA·cos(A)

  A = arccos((FA² +HA² -FH²)/(2FA·HA))

  A = arccos((100 +72 -100)/(2·10·6√2)) = arccos(72/(120√2))

  A = arccos(0.3√2) ≈ 64.90°

Angle HAF is about 64.90°.

How much elastic energy is stored in a slingshot that has a spring constant of 300 N/m and is stretched by 0.45m?

Answers

Answer:

E = 30.37 J

Step-by-step explanation:

Given that,

The spring constant of the spring, k = 300 N/m

The spring is stretched by 0.45 m, x = 0.45 m

We need to find the elastic energy stored in the spring. The formula for the elastic energy is given by :

[tex]E=\dfrac{1}{2}kx^2\\\\=\dfrac{1}{2}\times 300\times (0.45)^2\\\\=30.37\ J[/tex]

So, the required elastic energy is equal to 30.37 J.

Solve the simultaneous equations using elimination method.
4x – 3y = 1
x + 3y =​

Answers

Answer:

[tex]x=\frac{1}{5}[/tex]

[tex]y = -\frac{1}{15}[/tex]

Step-by-step explanation:

4x - 3y = 1

x + 3y = 0

Req To Solve With Elimination:

Make Them Equal:

-> 4x - 3y = 1

-> 4x + 4 . 3y = 0

Simplify:

->  4x - 3y = 1

-> 4x + 12y = 0

-> 4x - 4x - 3y - 12y = 1

-> -3y - 12y = 1

-> -15y = 1

-> [tex]y = -\frac{1}{15}[/tex]

-> [tex]x+3(-\frac{1}{15} )=0[/tex]

-> [tex]x -\frac{1}{5}=0\\[/tex]

-> [tex]x=\frac{1}{5}[/tex]

Please Mark As Brainliest

Answer:

4x – 3y = 1

x + 3y =​

Adding the equations gives us:

5x =1

x = .2

since 4x - 3y = 1

then -3y -1 = -4x then we multiply by -1

3y +1 = 4x

3y = 4*.2 -1

3y = .8 -1

3y = -.2

y = -.2 / 3  = -0.066666666...

For a double check you can use Cramer's Rule

http://www.1728.org/cramer.htm

Step-by-step explanation:

Solve the following simultaneous equations by elimination
A) x+y=2
x-y-1=0

B) x+y=5
x-y=7

C) x+y=17
x-y=1

D) 5x+y=29
5x-y=11

Answers

Answer:

0

8

0

9

0

9

9

098098809667906432

Can someone help will give brainliest

Answers

Answer:

Looking at this, slope seems to be 2 for the graph

So, looking at your options, -4 is less than 2, therefore, the answer is

D, with slope -4

Answer:

D

Step-by-step explanation:

The graphed function rises 2 in y for each run of 1 in x

Therefor the slope is 2/1 = 2

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

A) goes up 6 for each run of 3

slope = 6/3 = 2

B) goes up 15 for each run of 3

slope = 15/3 = 5

C) this is in slope intercept for of y = mx + b

m is the slope = 6

D) this is in slope intercept for of y = mx + b

m is the slope = -4

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

only D has a slope less than 2


What is the answer please help me no links

Answers

Answer:

C= 2.18x + 2.39

Step-by-step explanation:

Express as a single fraction and find the domain

Answers

A single fraction will be;

⇒ 1/(y + 12)

And, Domain of this expression is,

⇒ Domain = (-∞, ∞) - { 12 }

What is mean by Fraction?

A fraction is a part of whole number, and a way to split up a number into equal parts. Or, A number which is expressed as a quotient is called fraction. It can be written as the form of p : q, which is equivalent to p / q.

Given that;

The expression is,

⇒ 4 / (y + 2) - 3 / (y - 2) + 12/ (y² - 4)

Now,

Since, The expression is,

⇒ 4 / (y + 2) - 3 / (y - 2) + 12/ (y² - 4)

Simplify the expression as;

⇒ 4 (y - 2) - 3 (y + 2) / (y-2) (y+2) + 12 / (y² - 4)

⇒ 4y - 8 - 3y - 6 / (y² - 4) + 12 / (y² - 4)

⇒ (y - 14) / (y² - 4) + 12 / (y² - 4)

⇒ (y - 14 + 12) / (y² - 4)

⇒ (y - 12) / (y- 12) (y + 12)

⇒ 1/(y + 12)

Hence, A single fraction will be;

⇒ 1/(y + 12)

And, Domain of this expression is,

⇒ Domain = (-∞, ∞) - { 12 }

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If XV = 34, then HV =
No links

Answers

Answer:

17

Step-by-step explanation:

The diagonals in a parallelogram bisect each other, creating two equal halves. So HV = 1/2 of XV

HV = XV/2

HV = 34/2

HV =17

The required value of HV = 17.

From the graph
For the parallelogram XWVY
XV = diagonal of parallelogram

What is parallelogram?

parallelogram is quadrilateral whose opposite side is parallel.

XV = diagonal
XV = 34

Since the diagonal of a parallelogram bisect each other.
So,
HV = XV/2
HV = 34/2
HV = 17

Thus, The required value of HV = 17.

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Fill in the blanks to complete the equation ​

Answers

Answer:

1/8+1/8+1/8

Step-by-step explanation:

The denominator in the first fraction should match the others because you always need a common denominator to add or subtract. And 1+1+1 is 3.

Show 24÷1/4 step by step

Answers

Answer:

96

Step-by-step explanation:

24 divided by 1/4 is 96

you turn 24 into a fraction by putting a one under is and then you keep it change it flip it

24/1 Divided by 1/4

24/1 times 4/1

24 times 4= 96

1 times 1= 1

96/1=96

vertical Angles and Linear Pairs

Answers

Answer:

Two angles are vertical angles if their sides form two pairs of opposite rays. 5 and 6 are a linear pair. Two adjacent angles are a linear pair if the form a straight line. Linear Angle Pairs add up to 180°.

Which of the following tables represents a linear relationship that is also proportional?


x y
0 3
3 6
6 9

x y
0 4
2 6
4 8

x y
0 0
6 3
12 6

x y
0 3
5 5
10 7

Answers

The solution is Option A. , Option C.

The equations which are also proportional is y = 3x and x = 2y

What is Proportion?

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

The proportional equation is given as y ∝ x

And , y = kx where k is the proportionality constant

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given data ,

Let the equation be represented as A

Now , the value of A is

a)

Let the values of x = { 0 , 3 , 6 }

Let the values of y = { 3 , 6 , 9 }

Now , the proportional equation is y = 3x

So , the proportionality constant is k = 3

b)

Let the values of x = { 0 , 6 , 12 }

Let the values of y = { 0 , 3 , 6 }

Now , the proportional equation is x = 2y

So , the proportionality constant is k = 2

Hence , the equations are y = 3x and x = 2y

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Answer: The solution is Option A. , Option C.

Step-by-step explanation:

The equations which are also proportional is y = 3x and x = 2y

What is Proportion?

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

The proportional equation is given as y ∝ x

And , y = kx where k is the proportionality constant

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given data ,

Let the equation be represented as A

Now , the value of A is

a)

Let the values of x = { 0 , 3 , 6 }

Let the values of y = { 3 , 6 , 9 }

Now , the proportional equation is y = 3x

So , the proportionality constant is k = 3

b)

Let the values of x = { 0 , 6 , 12 }

Let the values of y = { 0 , 3 , 6 }

Now , the proportional equation is x = 2y

So , the proportionality constant is k = 2

Hence , the equations are y = 3x and x = 2y

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A clients intake in mL
Apple juice 2 oz
Chicken Broth 4 oz
Gelatin Dessert 3 oz
Hot tea 5 oz
3
Total mL

A) 330

B) 420

C) 510

D) 670

Answers

Answer:

Total intake in ML = 414 ml (Approx.)

Step-by-step explanation:

Given:

Apple juice intake = 2 oz

Chicken broth intake = 4 oz

Gelatin dessert intake = 3 oz

Hot tea intake = 5 oz

Find:

Total intake in ML

Computation:

1 oz = 29.5735 ml

Apple juice intake in ml = 2 x 29.5735

Apple juice intake in ml = 59.147 ml

Chicken broth intake = 4 x 29.5735

Chicken broth intake = 118.294 ml

Gelatin dessert intake = 3 x 29.5735

Gelatin dessert intake = 88.7205ml

Hot tea intake = 5 x 29.5735

Hot tea intake = 147.8675 ml

Total intake in ML = 59.147 ml + 118.294 ml + 88.7205ml + 147.8675 ml

Total intake in ML = 414.029 ml

Total intake in ML = 414 ml (Approx.)

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