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
Marizza181 [45]
3 years ago
7

Someone help me please!

Mathematics
1 answer:
andriy [413]3 years ago
5 0

Answer:

To solve the first inequality, you need to subtract 6 from both sides of the inequality, to obtain 4n≤12. This can then be cancelled down to n≤3 by dividing both sides by 4. To solve the second inequality, we first need to eliminate the fraction by multiplying both sides of the inequality by the denominator, obtaining 5n>n^2+4. Since this inequality involves a quadratic expression, we need to convert it into the form of an^2+bn+c<0 before attempting to solve it. In this case, we subtract 5n from both sides of the inequality to obtain n^2-5n+4<0. The next step is to factorise this inequality. To factorise we must find two numbers that can be added to obtain -5 and that can be multiplied to obtain 4. Quick mental mathematics will tell you that these two numbers are -4 and -1 (for inequalities that are more difficult to factorise mentally, you can just use the quadratic equation that can be found in your data booklet) so we can write the inequality as (n-4)(n-1)<0. For inequalities where the co-efficient of n^2 is positive and the the inequality is <0, the range of n must be between the two values of n whereby the factorised expresion equals zero, which are n=1 and n=4. Therefore, the solution is 1<n<4 and we can check this by substituting in n=3, which satisfies the inequality since (3-4)(3-1)=-2<0. Since n is an integer, the expressions n≤3 and n<4 are the same. Therefore, we can write the final answer as either 1<n<4, or n>1 and n≤3.

You might be interested in
Which pair shows equivalent expressions?
Scrat [10]
B is the answer because 2times2/5 is 2/5 and 2times2 is for so B IS THE ANSWER!
8 0
3 years ago
Read 2 more answers
Solve the formula 2x+3y=12 for y
rjkz [21]

Answer:

y=4−2x/3

Step-by-step explanation:

Move all terms that don't contain y to the right side and solve.

3 0
2 years ago
In the figure,ABC~ DEF. solve for x
Zinaida [17]

Answer:

B) X = 6

Step-by-step explanation:

The figure transformation is a dilation. And the side lengths increased by two.

8 0
2 years ago
How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!
Natalka [10]

Answer:

Step-by-step explanation:

x^2.x^1

=9^2.9^1

= 9 multiplied by 9

=81

9 multiplied by 1

=9

81 multiplied by nine

=585.198599

6 0
2 years ago
PLEASE HELP with proving lines parallel
den301095 [7]
90 mins later we had to go to sleep for sub for two other people that were not
4 0
3 years ago
Other questions:
  • barb ate six cheeseburgers in the last four months. How many do you perdict she will eat in two years?
    12·1 answer
  • What is three equivalent ratios for 10/12
    5·2 answers
  • Use the diagram to find the angle measures of the triangle. Recall that the sum of the angle measures of a triangle is 180 degre
    8·1 answer
  • PLEASE HELP!!!!!!
    5·1 answer
  • What does it mean about the data when a whisker is shorter?
    15·1 answer
  • What is 2 plus 2 equal
    13·2 answers
  • What is the first step in determining if 6 is a solution to 3 x = 18?
    13·2 answers
  • Haaaaaaaaaaaaaaaaaaaaalllllllp plz
    9·1 answer
  • A number plus 15 exceeds twice that number by 3<br><br>Translate into algebraic equation ​
    9·1 answer
  • There wegens ales and red apples instag Fyou pick one apple without looking the probability that the apple is greencaragaatiyars
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!