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
Neporo4naja [7]
2 years ago
5

I don't under stand what is wrong.

Mathematics
1 answer:
MAXImum [283]2 years ago
4 0

Answer:

In the first step, there is an issue when distributing the -3 to the terms inside of the parentheses. When multiplying the -3 to the -5, you would get an answer of +15, not -15.

The full correct process is:

(4m + 9) - 3(2m - 5) = 4m + 9 - 6m + 15

                                = 4m - 6m + 9 + 15

                                = -2m + 24

You might be interested in
-3+9x>87 or -x-9>-17​
Alex_Xolod [135]

Answer:

\large\boxed{x\in(-\infty,\ 8)\ \cup\ (10,\ \infty)}

Step-by-step explanation:

-3+9x>87\qquad\text{add 3 to both sides}\\\\9x>90\qquad\text{divide both sides by 9}\\\\\boxed{x>10}\to(1)\\\\-x-9>-17\qquad\text{add 9 to both sides}\\\\-x>-8\qquad\text{change the signs}\\\\\boxed{x10\ or\ x

7 0
3 years ago
Question 4
Irina-Kira [14]

Answer:

40

Step-by-step explanation:

3x^2 + 8x = 2

3x^2 + 8x - 2 = 0

D = b^2+4ac

D = 8^2+4(3)(-2)

D = 64+(-24)

D = 64-24

D = 40

8 0
3 years ago
The degrees of freedom in a t distribution is?
Bond [772]

Answer: 7 degrees of freedom.

Step-by-step explanation:

6 0
3 years ago
Help plz i need yo help im stuck yo
Reptile [31]

Answer:

P(-1,-7)

Q(-10,-7)

R(-1,-8)

3 0
3 years ago
Simplify: 5^(x+2)-4×5^x÷21×5^x​
ruslelena [56]

Answer:

(1/21)(21×5^(x+2)-4×5^2x)

Step-by-step explanation:

5^(x+2)-4×5^x÷21×5^x

= 5^(x+2)-4×5^2x/21

= 1/21(21×5^(x+2)-4×5^2x)

8 0
3 years ago
Other questions:
  • Find the value of each of these quantities. <br> C(5,3)<br> C(8,8)<br> C(12,6)
    9·1 answer
  • Use algebra to solve 3x + 4 = 1/x . The exact solutions are x =
    14·1 answer
  • Which is not a solution m-8≤2
    7·1 answer
  • An office is divided into 8 cubicles. How many of the cubicles are carpeted if only 1/4 of the cubicles are carpeted?
    5·1 answer
  • Help!!! and in terms of pi!! please
    14·1 answer
  • A person invest $2,940 in an account tgat earns 4.1% annual intrest. Find when the value of the investment reaches 5,000. If nec
    15·1 answer
  • Find the missing term. . . . 14, __, 15, . . .
    9·1 answer
  • Help pls
    5·1 answer
  • The ratio of sweaters to dresses that Jennifer has is 8:5. If
    13·1 answer
  • Matt is ordering basketball jerseys For his country's league. Last year he ordered 512 jerseys. 64 those jerseys were orange. If
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!