which
among the following is a quadratic equation?
A. (x + 1 )² = x² – 1
B. (x + 1 ) (x – 2 ) = x – 3
C. x (x + 1 )²= 0
D. 2x² = 2 ( x – 1)²
​with explanation pls...

Answers

Answer 1
B.

Because when doing the math, letter B fits the criteria of a quadratic equation. Which is ax^2 + bx + c = 0.

A is wrong because if we were to do the math, there would be no ax^2. The most important thing in a quadratic equation is the term ax^2, bx and c do not matter as much.

C is wrong because there cannot be a greater exponent than ^2.

D is wrong because of the same reason as letter a.

Related Questions

Mr. Bell earns a yearly salary of $34,567. Mr. Lee earns $22,999 per year. How much more does Mr. Bell earn
per year?

Answers

Answer:

34,567-22,999=11,568

Please help!!!!!!!!!!!!!!!!

Answers

Answer:

I don't know much about linear regression, but I would say the answer is 15.25. The x-value number closest to 75 is 77, and the corresponding y value is 16.5. Since there is a big difference between the other answers and 16.5, you can estimate and conclude that 15.25 is probably the answer. Sorry if this doesn't help much since I wasn't able to explain the correct way they asked you to do the problem. :/

5.7 x 3.6 help me asap​

Answers

Answer:

20.52

Step-by-step explanation:

I used a calculator

2(x+y) = 5
How would I solve for x ?

Answers

After you reach 2x=5-2y you take the 2 and put it on the other side by division so you can end up with only x on the left side so in the end it would be x=(5-2y)\2

6 1/7 as an improper fraction

Answers

43/7 is an improper fraction

If the numerator is equal to or greater than the denominator then the fraction will be an improper fraction thus 6 1/7 as 43/7 can show the fraction is improper.

What is a fraction?

In such a fraction, the value that appears above the horizontal line is referred to as the numerator.

The fraction is the division of the two numbers but the division is not wholly complete.

A fraction x/y has two terms x is called a numerator and y is the denominator.

An improper fraction is a fraction when x ≥ y.

Therefore, 6 1/7 = 6 + 1/7

⇒ (42 + 1)/7 = 43/7

Since 43 > 7 so it will be an improper fraction.

Hence "If the numerator is equal to or greater than the denominator then the fraction will be an improper fraction thus 6 1/7 as 43/7 can show the fraction is improper".

For more about fractions,

https://brainly.com/question/10354322

#SPJ2

You are running a fuel economy study. One of the cars you find is blue. It can travel 38 1/2 miles on 1 1/4 of gasoline. Another car is red. It can travel 21 3/5 on 4/5 of gasoline. What is the unit rate for miles per gallon for each​ car? Which car could travel the greater distance on 1 gallon of​ gasoline?

Answers

Answer:

Blue car: 30.8 miles per galon

Red car: 27 miles per galon

Blue car can travel longer distances on one galon!

Step-by-step explanation:

Blue car:

38 1/2=77/2=38.5 miles

1 1/4=5/4=1.25 gasoline

38.5/1.25=30.8miles per galon

Red car:

21 3/5=108/5=21.6 miles

4/5=0.8 gasoline

21.6/0.8=27 miles per galon

An item is originally priced $68.89. It is on sale for 42 percent of the original price. Which is an estimate of the sale price?
$2.00
$3.50
$20
$28

Answers

Answer: 28

Step-by-step explanation: round price to 70.00 then think 10% is $7....so 40% would be 7x4 = 28

Answer:

the answer is D $28

Step-by-step explanation:

Matt runs in the park every day at the average rate of c meters per minute.

b:

If Matt runs triple his regular speed for 20 minutes, what distance would he cover?

Answers

Answer: 60c

Step-by-step explanation: 3c times 20. This is the right answer I hope it helps <3

How do I find x in this triangle?

Answers

Answer:

B=5

Step-by-step explanation:

a2+b2=c2

12squared+b2=13squared

144+b2=169 Subtract by 144 on both sides

b2=25 Find square root of 25

b=5

Leila pumped 6 gallons of water out of her pool each minute for 24 minutes what was the total change in the amount of water in her pool answer in gallons

Answers

Answer:

The answer is 144.

Step-by-step explanation:

The question said 6 gallons of water comes out every minute. So, if you multiply 6x24 you get the answer of 144.

If a line is parallel to y=-6x +3 , what is the slop of that line ?

A.-6
B.3
C.8
D.1/6

Answers

Answer:

Step-by-step explanation:

A

Check my answers plz <3\

Answers

Answer:

all three are correct

Step-by-step explanation:

15 5/12 minus 11 1/8 A. 4 7/24 B. 4 7/12 C. -4 1/3 D.-4 7/24

Answers

Answer:

A. 4 7/24

Step-by-step explanation:

subtract 15 - 11 which equals 4

then do 5/15 - 1/8 =7/24

Joseph’s lunch at a restaurant costs $13.00, without tax. He leaves the waiter a tip of 17% of the cost of the lunch, without tax. What is the total cost of the lunch, including the tip without tax? *

Answers

Answer:

17% of 13 is 2.21

13 + 2.21 = 15.21

Step-by-step explanation:

Joseph's lunch costs = $13 without taxes

He leaves tip for the waiter = 17% of cost of the lunch

= 17% of $13

= 13 ×  

= ( 13 × 0.17)

= $2.21

Total cost of lunch + tip = 13 + 2.21

                                      = $15.21

A ship anchored in a port has a ladder which hangs over the side. The length of the ladder is 200cm, the distance between each rung in 20cm and the bottom rung touches the water. The tide rises at a rate of 10cm an hour. When will the water reach the fifth rung?

Answers

Bakugou here:

Answer:

The tide raises both the water and the boat so the water will never reach the fifth rung.

Step-by-step explanation:

Brainlyest??!!

Please help! What is the slope of the line graphed on the coordinate plane?

Answers

Answer:

The slope is 3/4

Step-by-step explanation:

You can Y2-Y1/X2-X1 to find the answer to this question

Since the points are (-2,3) and (2,6) it will be..

6-3/2+2   ** the 2 becomes a plus in the denominator because negative and negative is positive

3/4 is the slope

Upload the worksheet with your constructions below.

Answers

Answer:

I attached a pic of my work, its 100% correct.

Its a bit messy....

How many times does 2/3 go into 7 1/3

Answers

Answer:

11

Step-by-step explanation:

7 1/3 ÷ 2/3 = 11

(please give brainliest)

Answer: 1/11

Explanation:

KCF

(keep, change, flip)

Write the number for one million six hundred thousand .

Answers

Answer:

1,600,000

Step-by-step explanation:

Answer:

1001600

Step-by-step explanation:

Jessica wants to go on a school trip next month. The trip will cost $100 and she already has $10 and plans to babysit for $5 an hour to earn the rest of the money.
A. Write an equation that could be used to determine h, the number of hours Jessica needs to babysit to earn $100.


B. From your equation, determine the number of hours she needs to babysit.

Answers

Answer:

Step-by-step explanation:

100=10+5x  x is the hours she needs to babysit

90=5x

x=18

She needs to babysit for 18 hours at $5 an hour if she already has $10

Asappppp , pls help me :((

Answers

Answer:

Not a function

Step-by-step explanation:

This is not a function because every x value has more than one y value. Think about it this way. If you have a person and you are telling them to go to three different places at once, they can't. That means this isn't a function. Hope this helps!

Answer: That is not a function

Hope it helped

Step-by-step explanation:

9 - 8(x+1) < 3 (2 - 4x)​

Answers

Answer: x < 5/4

Step-by-step explanation:

❗️Help needed please ❗️

Answers

Answer:

prove it by S.S.S axiom bro

Step-by-step explanation:

statement                                reason

1.in triangle ADB and ADC

a. AB=AC                                    a.given

b.BD=CD                                     b. radii of same circle

c. AD=AD                                      c. common side

2. ∵triangle ADB is congurent to 2. by S.S.S axiom

  ADC

Answer:

AD cuts BC at I => I is the midpoint of BC => BI = CI

ΔAIB and ΔAIC have:

AB = AC

BI = CI

m∠ABC = m∠ACB ( because ΔABC is a  isosceles triangle)

=> ΔAIB ≅ ΔAIC (sas)

=> m∠BAD = m∠CAD

ΔADB and ΔADC have:

m∠BAD = m∠CAD

AB = AC

AD is the common edge

=> ΔADB ≅ ΔADC (sas)

Step-by-step explanation:

please can someone solve​

Answers

Answer: both a and b are correct

Explanation: since it isn’t >= it needs a dotted line and she shaded downwards but y> which means it should go upwards


height= 7.5 m
radius = 14m
Find the volume

It’s a cylinder btw

Answers

I hope this helps you.

Can anyone give me the answer?

Answers

Answer:

The 2nd one/Green

Step-by-step explanation:

A plane figure with five straight sides and five angles.

3 is the answer to your question

A stovetop burner on medium reaches 95°C. Which will also receive a flow of heat directly from the burner

Answers

Answer:

The surrounding air

Step-by-step explanation:

Answer:

the surrounding air

Step-by-step explanation:

A park is showing a movie on the lawn. The base of the screen is 6 feet off the ground and the screen is 22 feet high (see figure).

Answers

Answer:

A. 61.82°;

15.64°

B. 33.37°

Step-by-step explanation:

A.

✍️Angle of elevation from 15 ft:

A right triangle is formed. Apply trigonometric ratios formula to find the angle of elevation from 15 ft.

Thus,

Length of the side Opposite to reference angle = 22 + 6 = 28 ft

Adjacent length = 15 ft

Thus, we would have:

[tex] tan(\theta) = \frac{opp}{adjacent} = \frac{28}{15} [/tex]

[tex] tan(\theta) = 1.8667 [/tex]

[tex] \theta = tan^{-1}(1.8667) [/tex]

[tex] \theta = 61.82 [/tex] (2 d.p)

✍️Angle of elevation from 100 ft:

Thus,

Length of the side Opposite to reference angle = 22 + 6 = 28 ft

Adjacent length = 100 ft

Thus, we would have:

[tex] tan(\theta) = \frac{opp}{adjacent} = \frac{28}{100} [/tex]

[tex] tan(\theta) = 0.28 [/tex]

[tex] \theta = tan^{-1}(0.28) [/tex]

[tex] \theta = 15.64 [/tex] (2 d.p)

B.

✍️Distance you'd be from the screen if you lie on the ground and make an angle of elevation of 40° to the top of the screen:

Adjacent length = your distance from the screen = x

Opposite length = 22 + 6 = 28 ft

Angle of elevation = 40°

Tge trigonometric ratios formula to use would be:

[tex] tan(\theta) = \frac{opp}{adjacent} [/tex]

Plug in the values

[tex] tan(40) = \frac{28}{x} [/tex]

Multiply both sides by x

[tex] x*tan(40) = 28 [/tex]

Divide both sides by tan(40)

[tex] x = \frac{28}{tan(40)} [/tex]

[tex] x = 33.37 [/tex] (2 d.p)

What is the next term in the following sequence? 54, -18, 6,.....

Answers

-2 is the right answer

The amount of paper that the copy shop used this month was a 25% increase of the amount of paper they used last month. What percent represents the amount of paper used this month? *

Answers

Answer:

You didn't include any image here, but numerically, the amount of paper consumed this month is 125% compared to last month.

If last month's consumption is represented by 4 equal shapes, then the current month's consumption will be 5 shapes.  

If last month's consumption is represented by 8 equal shapes, then the current month's consumption will be 10 shapes.  

this pattern keeps repeating.

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