1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Liono4ka [1.6K]
3 years ago
6

Which of the following is an example of a quadratic equation

Mathematics
1 answer:
raketka [301]3 years ago
8 0

Answer:

x

2

=36x, start superscript, 2, end superscript, equals, 36

(x-2)^2=49(x−2)

2

=49left parenthesis, x, minus, 2, right parenthesis, start superscript, 2, end superscript, equals, 49 [Why is this a quadratic equation?]

x^2

x, start superscript, 2, end superscript(x-2)^2

left parenthesis, x, minus, 2, right parenthesis, start superscript, 2, end superscriptxx

\begin{aligned}(x-2)^2&=49\\\\ x^2-4x+4&=49\end{aligned}

 

x^2

x, start superscript, 2, end superscript

2x^2+3=1312x

2

+3=131

Step-by-step explanation:

You might be interested in
A pair of pants was 40% off the original price. The sale resulted in a $36 discount. What was the original price before the sale
Mama L [17]

Answer:

$90.00

Step-by-step explanation:

40% of What is 36?

40/4 = 10 (10%)

36/4 = 9 (9 is 10% of the answer we are looking for)

Multiply both answers (9 and 10) by each other.

You get 90

8 0
2 years ago
Match each trig function to a ratio. tan(A)=
ehidna [41]

Answer:

\frac{y}{x}, the fourth option.

Step-by-step explanation:

Tan means \frac{opposite}{adjacent} or opposite side divided by adjacent side.

Tan A equals the opposite side of the angle A divided by its adjacent side.

The side opposite of A is y and side adjacent to it is x.

So, Tan A equals \frac{y}{x}!

6 0
3 years ago
The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:
blsea [12.9K]

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}

  =\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182

Compute the standard deviation as follows:

SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}

      =\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899

Thus, the standard deviation of the age distribution is 6.2899 years.

7 0
2 years ago
Rewrite the fraction as a decimal 13/11 = Round to the nearest hundredth.​
Allisa [31]

Answer:

1.18

Step-by-step explanation:

4 0
2 years ago
Which rotation has occured if A (-4,2) moves to A (-2,-4)​
Alja [10]

Answer:

90 degrees counter-clockwise

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Find the measure of angle a
    13·1 answer
  • Can you please tell me the answers to all of these
    11·1 answer
  • I need the answer for this question I’m stuck
    12·1 answer
  • RIGHT ANSWERS ONLY!!!!!!!
    12·2 answers
  • Which equatlon represents the line that is parallel to y=3 and passes through (-2, -8)?​
    12·1 answer
  • Is 0.4 greater than or less than 0.127
    5·2 answers
  • Explain two ways you can use a number line to order the integers –3, +1, and –10.
    11·2 answers
  • Two dice are thrown together. what is the probability of obtaining a triangular number? ​
    11·1 answer
  • AB formed by (-3, 8) and (3, 2) and CD formed by (7.1) and (5, -1). Are these
    14·1 answer
  • Which of the following represents all solutions to the equation <br> 1/3x^2 +10 = 7
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!