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
Darya [45]
4 years ago
5

Factor the following equation: 4x^2 – 81

Mathematics
1 answer:
pishuonlain [190]4 years ago
3 0
The answer is:
(2x+9)(2x-9)
You might be interested in
The fair market rental rate for Bloomington is $747 and for Kokomo is $654. The relative change from Bloomington to Kokomo is __
irina1246 [14]

Answer:

<em>The relative change from Bloomington to Kokomo is  -12.449...%</em>

Step-by-step explanation:

The fair market rental rate for Bloomington is $747 and for Kokomo is $654.

So, the amount of relative change from Bloomington to Kokomo will be:  (\$654-\$747)=-93 dollar.

<em>Formula for percentage of relative change = (Amount of relative change/ Initial amount)× 100%</em>

So, the percentage will be:  \frac{-93}{747}\times 100\% =-12.449.... \%


5 0
3 years ago
Please help me! :D &lt;3
Scrat [10]

Answer:

Well 5 times 1 is 2.5 which can't be and integer

so I looked it up an this is what I got How do you write 2.5 as an integer?

If this is the question, then Integer-Part[2.5] = 2, and the Fractional-Part[2.5] = . 5.

I would put 3 it because 2.5 as a hole number is 3

Step-by-step explanation:

4 0
2 years ago
A study is conducted to determine whether a new cancer drug increases the mean survival time by at least 30 days for a certain t
anygoal [31]

Answer:

H0: The new cancer drug increases the mean survival time by 30 days

Ha: The new cancer drug increases the mean survival time by 30 or more than 30 days.

If fail to reject H0 (the null hypothesis), the conclusion is that the new cancer drug increases the mean survival time by 30 days.

Step-by-step explanation:

The null hypothesis is a statement from a population parameter which is either rejected or accepted (fail to reject) upon testing. It is expressed using the equality sign.

The alternate hypothesis is also a statement from a population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.

The test is a two-tailed test because the alternate hypothesis is expressed using more than or equal to.

If I fail to reject H0, it means the test statistic falls within the region bounded by the critical values.

It would therefore be concluded that the new cancer drug increases the mean survival time by 30 days.

8 0
3 years ago
Indicate in standard form the equation of the line passing through the given point and having the given slope. r(4, 0), m = 5
Brrunno [24]
Y = mx + b....m is the slope and b is the y intercept
slope(m) = 5...(4,0)...x = 4 and y = 0
now we sub our info into y = mx + b...we r looking for b, the y intercept
0 = 5(4) + b
0 = 20 + b
-20 = b
so ur equation is y = 20x - 20...but we need it in standard form
Ax + By = C

y = 20x - 20....subtract 20x from both sides
-20x + y = -20...multiply by -1 to make x positive
20x - y = 20 <== standard form
5 0
3 years ago
Anna and Maya are competing in a dance tournament where dance moves are worth a certain number of points if a dance move it's do
Gre4nikov [31]

Anna's current number of points = 225 points.

She danced correctly and earned = 75 points.

And when she danced incorrectly she loses = 30 points.

Note: For dancing correctly earned points will be added and for dancing incorrectly loses points will be subtracted from the total points has in starting.

So, we can setup an expression as

Current points + earned points - loses points

Plugging values, we get

225 +75 -30   Required expression.

Adding 225 and 75, we get 300.

Therefore, 225 +75 -30 = 300-30.

Subtracting 30 from 300, we get

300-30=270.

Therefore, Anna's final score is 270 points.

6 0
4 years ago
Other questions:
  • Simplify the following expression. one-fourth(24 – 16x)
    11·1 answer
  • "assume x is a random variable with mean μ and standard deviation σ . find expressions for the mean and standard deviation of y
    10·1 answer
  • Solve the following equation, and check your solution. Be sure to show all work.
    6·2 answers
  • What is the result when 4x^2-17x+36 is subtracted from 2 x^2-5x+25?
    13·2 answers
  • Which scenario can be represented using the inequalities below?
    14·2 answers
  • The sum of five consecutive integers is five. What is the product of the five integers?
    10·1 answer
  • Please help I AM BEGGING YOU
    5·2 answers
  • A teacher wrote this expression on the board (-6)(2)+(-8+4)
    13·2 answers
  • list 5 examples and application where geometric sequences occur in everyday life.justify your answer are geometric sequences ​
    13·1 answer
  • What 21.807-10.739=?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!