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
Inga [223]
3 years ago
12

What is 4/9 - (-2/9)

Mathematics
1 answer:
Citrus2011 [14]3 years ago
4 0

Hello!


\frac{4}{9}-\frac{2}{9}

First you had to used apply rule -(-b)=b

\frac{4}{9}+\frac{2}{9}

Since the denominators are equal to it should be combine by the fractions.

\frac{4+2}{9}

Then add 4+2=6

\frac{6}{9}

\frac{4}{9}-\frac{-2}{9}

Finally you had to cancel by the common factor of 3.

=Answer--->\frac{2}{3}

Hope this helps! And thank you for posting at here on Brainly. And have a great day! -Charlie :)

You might be interested in
Write sentence as inequality. Plz help<br> A number x is less than 5 and greater than 3.
Y_Kistochka [10]

Answer:

3<x<5

Step-by-step explanation:

4 0
3 years ago
15 is 9 than j what is j in this question
marysya [2.9K]

Answer:

6

Step-by-step explanation:

15 is 9 more hence you subtract 9 from15

Hope this helps

3 0
2 years ago
8n+?=0<br> plz solve i will mark brainliest
Ksivusya [100]

Answer:

negative 8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Brainliest ,easy question
insens350 [35]

Answer:

Scale factor is 2/5 or 0.4

Step-by-step explanation:

Divide radius of smaller circle (2) by radius of large circle (5)

4 0
2 years ago
A consulting firm had predicted that 35% of the employees at a large firm would take advantage of a new company Credit Union, bu
m_a_m_a [10]

Answer:

a) 0.4770

b) 3.9945

c) z-statistics seem a large value

Step-by-step explanation:

<u>a. Find the standard deviation of the sample proportion based on the null hypothesis</u>

Based on the null hypothesis:

p_{0}: 0.35

and the standard deviation σ = \sqrt{p_{0} *(1-p_{0}) } =\sqrt{0.35 *0.65 } ≈0.4770

<u>b. Find the z statistic</u>

z-statistic is calculated as follows:

z=\frac{X-p_{o} }{\frac{s}{\sqrt{N} } } where

  • X is the proportion of employees in the survey who take advantage of the Credit Union (\frac{138}{300}=0.46)
  • p_{0} is the proportion in null hypothesis (0.35)
  • s is the standard deviation (0.4770)
  • N is the sample size (300)

putting the numbers in the formula:

z=\frac{0.46-0.35} }{\frac{0.4770}{\sqrt{300} } } = 3.9945

<u>c. Does the z statistic seem like a particularly large or small value?</u>

z-statistics seem a large value, which will cause us to reject the null hypothesis.

4 0
3 years ago
Other questions:
  • Write the equation of a line that passes through (-4,15) and (-7,10) in point slope form
    7·1 answer
  • The width of a rectangle is 7 inches less than its length. The area of the rectangle is 120 square inches. Solve for the dimensi
    7·2 answers
  • Need help also.......
    13·1 answer
  • A group of aliens are planning a trip to Earth. For every 5 aliens they need 7 power pouches in order to meet one day's food nee
    13·1 answer
  • Find the following difference by changing into sums with multiplication by a negative number.
    5·1 answer
  • a rectangle is reduced by a scale factor of 1/4 which choices show the ratio of the area hurry because i need this for a test
    7·1 answer
  • Pls help!!! Fastttttttttttttttt
    11·2 answers
  • Caroline and Chase are working on math homework. They decide to race to see who can finish first. Caroline is on number 12 and c
    15·1 answer
  • Janelle and three of her friends bought four smoothies of equal cost for a total of 3$. If she purchases the same smoothies on a
    12·1 answer
  • Please help me i dont want to fail
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!