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
vivado [14]
3 years ago
9

Solve for the equation y to the second power = 81

Mathematics
2 answers:
Orlov [11]3 years ago
6 0

Answer:

<h2>y = -9 or y = 9</h2>

Step-by-step explanation:

y^2=81\iff y=\pm\sqrt{81}\\\\y=-9\ or\ y=9\ because\ (-9)^2=81\ and\ 9^2=81

dybincka [34]3 years ago
3 0

Answer:

9

Step-by-step explanation:

9*9=81

You might be interested in
According to the manufacturer of the candy Skittles, 20% of the candy produced are red. If we take a random sample of 100 bags o
igomit [66]

Answer:

Probability that the proportion in our sample of red candies will be less than 20% is 0.5 .

Step-by-step explanation:

We are given that 20% of the candy produced are red. A random sample of 100 bags of Skittles is taken.

The distribution we can use here is;

               \frac{\hat p - p}{\sqrt{\frac{\hat p (1- \hat p)}{n} } } ~ N(0,1)

where, p = 0.20 and n = 100

Let \hat p = proportion of red candies in our sample

So, P(\hat p < 0.20) = P(\frac{\hat p - p}{\sqrt{\frac{\hat p (1- \hat p)}{n} } } < \frac{0.20 - 0.20}{\sqrt{\frac{0.2 (1- 0.2)}{100} } } ) = P(Z < 0) = 0.5

Therefore, probability that the proportion in our sample of red candies will be less than 20% is 0.5 .

5 0
3 years ago
Find the horizontal​ asymptote, if​ any, of the graph of the rational function. ​f(x)=16x5x2+7​
frozen [14]
There is an app called math-way it helps you with these types of questions
3 0
2 years ago
Evaluate 3xy- y + 6z when x = 1, y = - 2 and z = 3
Marat540 [252]

Answer:

<h2>14</h2>

Step-by-step explanation:

3xy- y + 6z \\\\x = 1\\ y = - 2 \\ z = 3\\\\3(1)(-2) - (-2) +6(3)\\-6 + 2 +18\\=14

4 0
3 years ago
Read 2 more answers
Is w = 7 a solution to this equation? <br><br> 28 = 4w
suter [353]

Answer:

yes

Step-by-step explanation:

4w=28

4(7)=28

28=28

5 0
3 years ago
Evaluate the following expression: -291.<br> 18<br> 0-11<br> -18<br> 11
jenyasd209 [6]
The correct answer is 11
6 0
3 years ago
Other questions:
  • Find the value of x. WILL GIVE BRAINLIEST!!!
    10·1 answer
  • How do you compare y-intercepts and rates of change
    11·1 answer
  • What divided by 2 = 8?
    15·2 answers
  • What interger is equivalent to -(-7)?
    15·1 answer
  • A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval between
    9·1 answer
  • Help don’t understand it
    10·1 answer
  • Jacob went to the gas station with 17.70 he brought a drink for 2.90 and he wanted to spend the rest of the money and a bag of c
    5·1 answer
  • Can you solve -2 (2x - 6) = -3x
    7·2 answers
  • nelson middle school raised $19950 on ticket sales for its carnival fundraiser last year at $15 per ticket. if the school sells
    9·1 answer
  • Solve 4x-2y=6 for x in terms for y
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!