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
Natalka [10]
3 years ago
9

Create a question like

Mathematics
1 answer:
vovikov84 [41]3 years ago
3 0

Answer:

x = (+ - ) 9

Step-by-step explanation:

x^2 = 81

u know how u can sometimes cancel something out by doing the opposite.

This is one of those times as well. the opposite of ^2 = square root.

so if we take the square root of both sides, this will cancel out the^2 on the left side.

sqrt (x^2) = sqrt(81)

x = (+-) 9.....thats a positive and a negative sign...because the sqrt of 81 is both 9 and -9.

You might be interested in
Keith ate 2/6 of candy bar. If there were 6 pieces total, what fraction of the candy bar is left?
IgorC [24]
If there were 6 pieces and Keith ate 2 of the pieces, then there would be 4 pieces left.
\frac{4}{6}
and when you reduce it it would be 
\frac{2}{3}
5 0
2 years ago
Read 2 more answers
A line passes through the two given points. Is it vertical, horizontal,or neither? (-1, -1), (-2, -1)
solniwko [45]
Horizontal 
As they have the same y coordinates

7 0
3 years ago
Read 2 more answers
Rick cuts a 12-foot-long ribbon into 2 pieces. One piece is 3.5 feet longer than the other. What is the length of each piece?
GREYUIT [131]

Its impossible there is no way to solve it because x+3.5= y no number can make 12 if one number is 3.5 ft longer than the other Ignore this i dont feel like erasing this part.

144 in. 42 in. greater than the other 42 + x = y Nvm if you convert the numbers too in. the numbers are 93 + 51 = 144 and if you convert it back it would be

7.75 + 4.25 = 12

3 0
2 years ago
Find the following expressions a perfect square.<br>a) a and b square+..... c square and d square​
Natalka [10]

Answer:

the questions is not too correct

7 0
3 years ago
In 2008, data from the Center for Disease Control revealed that 28.5% of all male teenagers, aged 18-19 and attending U.S. colle
m_a_m_a [10]

Answer:

a) H0 : u = 28.5%

H1 : u < 28.5%

b) critical value = - 1.645

c) test statistic Z= - 1.41

d) Fail to reject H0

e) There is not enough evidence to support the professor's claim.

Step-by-step explanation:

Given:

P = 28.5% ≈ 0.285

X = 210

n = 800

p' = \frac{X}{n} = \frac{210}{800} = 0.2625

Level of significance = 0.05

a) The null and alternative hypotheses are:

H0 : u = 28.5%

H1 : u < 28.5%

b) Given a 0.05 significance level.

This is a left tailed test.

The critical value =

-Z_0.05 = -1.645

The critical value = -1.645

c) Calculating the test statistic, we have:

Z = \frac{p' - P}{\sqrt{\frac{P(1-P)}{n}}}

Z = \frac{0.2625 - 0.285}{\sqrt{\frac{28.5(1-28.5)}{800}}}

Z = -1.41

d) Decision:

We fail to reject null hypothesis H0, since Z = -1.41 is not in the rejection region, <1.645

e) There is not enough evidence to support the professor's claim that the proportion of obese male teenagers decreased.

5 0
3 years ago
Other questions:
  • Please help me on #18, don't know how to do the question.
    12·1 answer
  • The formula for finding the area of a square that has a side length, s, is A = s2. If a square has an area of 40 square units, w
    6·2 answers
  • 1.4 divided by 0.7 in a model
    11·1 answer
  • Twice a certain number minus 7 is equal to 5. What is the number.
    11·2 answers
  • An art teacher had 2/3 gallon of paint to pour into containers if he poured 1/8
    12·1 answer
  • Question 3 (2 points)
    5·1 answer
  • Harold opened a credit card at a department store with an APR of 14.55% compounded monthly. What is the APY on this credit card?
    14·1 answer
  • Please help! Dylan decides to take his friends to a movie. He wants to spend no more than $50. He must take one adult with him.
    10·1 answer
  • Find the night of the parallelogram wh hen it's :area is 2.5mm squared base is 5mm
    12·1 answer
  • Consider the data set
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!