Mathematics High School

Use Quadratic equation to solve
a2 -4a - 4 = 0

Answers

Answer 1

Answer:

a = 2 ± 2[tex]\sqrt{2}[/tex]

Step-by-step explanation:

a = 1

b = -4

c = -4

x = (-b ± [tex]\sqrt{b^2 - 4ac}[/tex]) / 2a

x = (-(-4) ± [tex]\sqrt{(-4)^2-4(1)(-4)}[/tex]) / 2(1)

x = (4 ± [tex]\sqrt{16 +16}[/tex]) / 2

x =  (4 ± 4[tex]\sqrt{2}[/tex]) / 2

x = 2 ± 2[tex]\sqrt{2}[/tex]

Your variable being solved is a so a = 2 ± 2[tex]\sqrt{2}[/tex]

Related Questions

y=330(1.06)^x
answer​

Answers

Answer:

349.8^x

Step-by-step explanation:

330*1.06=349.8

Answer:

6% increase

Step-by-step explanation:

How many solutions does this equation have?

6b = 3b + 3b

is there a solution

Answers

Answer:

Yes

The answer is 1

Step-by-step explanation:

HELP PLS ITS URGENT !!

Answers

Answer:

I think it'll be D

Step-by-step explanation:

srry if wrong

hope this helps

Michael returned a bag of cans and received $4.65 back. If the deposit for each can was $0.05, how many cans did he return? (answer pls

Answers

Answer:

The Answer is 93 Cans

Step-by-step explanation:

4.65 divided by 0.05 is 93

Brainliest? :3

pls answer 13 points!! :)

Answers

Answer:

140 lb.

Step-by-step explanation:

Answer:

140 pounds

Step-by-step explanation:

75% of 80 is 60

100% of 80 is 80

80+60 = 140

help! brainliest!!! picture below

Answers

the answer to this question is c. which is 18

Solve for x

(3x-4)/14=9/10

Answers

Answer:

x=5.53333333333333333333333333333333333333333

Step-by-step explanation:

cross multiply and solve:

30x-40=126

30x=166

x=5.533333333333333333

what is the solution to the equation 3x + 15 = 9

Answers

Answer:

3x + 15 = 9

3x = 9 - 15

3x = -6

x = -6/3

x = -2.

Please help me! I need this done in 10 mins.

Answers

Answer:

I'm pretty sure the answer is 14m

Step-by-step explanation:

All you have to do is add the numbers together.

Hope this helps!

Answer:

The answer is 28.5

Step-by-step explanation:

Break apart the shapes then add their areas

Rectangle: 3 * 6 = 18

Top triangle: 6 * 2 = 12 / 2 = 6

Triangle on the right: 3 * 3 = 9 / 2 = 4.5

Total area = 28.5 meters squared.

What is the measure of the angle fgb? Can someone please help asap ill mark brainlist!!!

Answers

Answer:

The measure is 145

Step-by-step explanation:

Answer:

145

Step-by-step explanation:

The total sum of angles around a point is 360 degrees.

Find the measure of the unknown angle for the following.

1. a triangle with angle measures of 66° and 77°

2. a right triangle with one angle measure of 36°

3. a quadrilateral with angle measures of 144°, 84°, and 48°

4. Divide a six-sided polygon into triangles to find the sum of its interior angles.​

Answers

Answer:

1. 37°

2. 54°

3. 84°

Step-by-step explanation:

1. 180-(66+77)=37°

2. 180-(90+36)=54°

3. 360- (144+84+48)

Simplify the following expressions: 1/3(6a+12)+3a

Answers

Answer in simplified expression: 5a+4

The simplified answer is 5a + 4

solve the question z + 18 = 27.

Answers

9???????????????????????????????

Answer:

I'm going to guess that you are trying to find z. If so, Z is 9.

Step-by-step explanation:

Z + 18 = 27

Subtract 18 on both sides

Z + 18 = 27

Z - 18 = - 18

Z = 9

Please help me as soon as possible; your help is highly appreciated .The topic is Probability. I will give 5 stars rating and 15 points to whoever helps me first ,and correctly does so.NO LINKS OR I WILL REPORT!!!

Answers

Answer:

1/3 because he took one red and there were 4 but now there is 3.

Line A is perpendicular to Line B. If the slope of A is -1/7, what is the slope of Line B?

Answers

Answer:

m = 7

Step-by-step explanation:

Perpendicular slopes are negative reciprocals so:

m of A = -1/7

m of B = 7

Please help solve correctly. NO links or files. Correct answers only if not report. I will even give an additional 10 if correct.

Answers

Answer: 228 cm

hope this helped :)

can someone please help me with this:

x/4 ≤ -2

Answers

-8(super duper sorry if you get it wrong I tried my best)

Plss I need this rnnn

Answers

Answer:

x= 65

Step-by-step explanation:

3x-15=180

add 15 both sides

3x= 195

divide by 3

x=65

the answer for x would be 65 (x=65

Find the area of the figure.

40.8 cm2

1128 cm2

47.52 cm2

33.7 cm2

Answers

Answer:

answer is 47.52 cm2

Step-by-step explanation:

follow me please

use prime factorization to find square root of 196

Answers

Answer:

14

Step-by-step explanation:

You should always specify if you want an exact answer or a rounded one. I'll assume the former.

Prime Factors

196 = 2 * 98196 = 2 * 2 * 49196 = 2 * 2 * 7 * 7

Rule

For every 2 factors under the root sign, take 1 outside the root sign and throw the other one away.

Solution

[tex]\sqrt{2 * 2 * 7 *7}[/tex]

2 * 7 * √1

14

find the measure of angle b (image below)

Answers

Answer:

123+b=180 (being sum of straight angle)

b=180-123

b=57

How many more brooms must each earn in order to have enough credit to get a month off with pay?

Answers

Answer:

5

Step-by-step explanation:

What are the numerical measures of each angle in the diagram? ∠1 and ∠3 measure degrees. ∠2 and ∠4 measure degrees.

Answers

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bit.[tex]^{}[/tex]ly/3a8Nt8n

Answer:

29 degrees and 151 degrees!

Step-by-step explanation:

16 cars are parked if 1/4 of them are blue how many cars are blue

Answers

Answer: 4

Step-by-step explanation:

Answer:4

Step-by-step explanation: for example, you have 1/4 if you double that you get 2/8, triple it would be 3/12, next would be 4/16

The length of a rectangle is 1 meter less than twice its width. The perimeter of the rectangle is 40 meters. What are the dimensions of the rectangle?

Answers

So 1 is blank and two is 40 so DO IT URSELF STOP BEING LAZYYY

What value of x makes the equation -2/3x + 3 1/3x - 1/2 = -1/3x + 5 1/2 true? Please help ASAP!!!!!!!!

Answers

Answer:

x = 2

Step-by-step explanation:

The steps of the solution in the photo above

I hope that is useful for you :)

John and Paul both run on the same track each morning. The ratio of the number of miles John runs to the number of miles Paul runs is 5:8.

Answers

Answer:

Step-by-step explanation:

For example,

Solution: Finding a unit rate

If we divide 150 by 20, we get the unit rate for the ratio, 150 minutes for every 20 miles.

150÷20=7.5

So the runner is running 7.5 minutes per mile. We can multiply this unit rate by the number of miles:

7.5 minutes mile × 6 miles = 45 minutes

Thus it will take her 45 minutes to run 6 miles at this pace.

If it takes her 45 minutes to run 6 miles, it will take her 45÷3=15 minutes to run 6÷3=2 miles at the same pace.

If it takes her 15 minutes to run 2 miles, it will take her 4×15=60 minutes to run 4×2=8 miles at the same pace. Since 60 minutes is 1 hour, she is running at a speed of 8 miles per hour.

We found her pace in minutes per miles in part (a).

HELPPOO MEEEEE plessss

Answers

the answer is yes. Why? Because if you move a vertical line across the graph, at any given moment, it only touches one point. If it touched more than one point it wouldn't be a function.

Help on these two pleaseeeeeeeeeee

Answers

4. 2k-13
Hope this helps!

please please please help me do not get this

Answers

Answer:

4

Step-by-step explanation:

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