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
aniked [119]
3 years ago
6

Simplify.

Mathematics
1 answer:
pantera1 [17]3 years ago
7 0
-12 + 9 - (-3) - 11

Remember PEMDAS: This is the order of operation.
P-Paragrahp
E-Exponent
M-Multiply
D-Divide
A-Add
S-Subtract

1st step: PEM
-(-3) is actually -1 * -3 = + 3

-12 + 9 + 3 - 11

2nd step: D is not possible, so we do A.
9 + 3 = 12

3rd Step: Subtract
12 - 12 - 11 = 0 - 11 = -11 CHOICE B. 

You might be interested in
What is 1x + 3x when x=1
rodikova [14]

Answer:

x therefore will be equal to 4

8 0
3 years ago
Read 2 more answers
What is the anwser for 7x−x
11Alexandr11 [23.1K]

Answer:

6x

Step-by-step explanation:

7x - x

6x

8 0
3 years ago
Please help I am so lost!!!
ASHA 777 [7]
\bf tan\left( \frac{x}{2} \right)+\cfrac{1}{tan\left( \frac{x}{2} \right)}\\\\
-----------------------------\\\\
tan\left(\cfrac{{{ \theta}}}{2}\right)=
\begin{cases}
\pm \sqrt{\cfrac{1-cos({{ \theta}})}{1+cos({{ \theta}})}}
\\ \quad \\

\cfrac{sin({{ \theta}})}{1+cos({{ \theta}})}
\\ \quad \\

\boxed{\cfrac{1-cos({{ \theta}})}{sin({{ \theta}})}}
\end{cases}\\\\

\bf -----------------------------\\\\
\cfrac{1-cos(x)}{sin(x)}+\cfrac{1}{\frac{1-cos(x)}{sin(x)}}\implies \cfrac{1-cos(x)}{sin(x)}+\cfrac{sin(x)}{1-cos(x)}
\\\\\\
\cfrac{[1-cos(x)]^2+sin^2(x)}{sin(x)[1-cos(x)]}\implies 
\cfrac{1-2cos(x)+\boxed{cos^2(x)+sin^2(x)}}{sin(x)[1-cos(x)]}
\\\\\\
\cfrac{1-2cos(x)+\boxed{1}}{sin(x)[1-cos(x)]}\implies \cfrac{2-2cos(x)}{sin(x)[1-cos(x)]}
\\\\\\
\cfrac{2[1-cos(x)]}{sin(x)[1-cos(x)]}\implies \cfrac{2}{sin(x)}\implies 2\cdot \cfrac{1}{sin(x)}\implies 2csc(x)
4 0
3 years ago
While traveling to and from a certain destination, you realized increasing your speed by 40 mph saved 4 hours on your return. Th
Sholpan [36]

<u>Answer:</u>

An equation that relates the speeds of the two legs of the trip

  \frac{640}{x-40}+\frac{640}{x}=4

<u>Explanation:</u>

Given, we have to use x to represent the speed on the second leg

Speed on first leg when increasing your speed by 40 mph will be (x-40)

Distance is given as 640 miles and time is calculated as  

\text { Time }=\frac{\text { Distance travelled }}{\text { speed }}

According to the question, increasing speed saved four hours

Therefore, the equation that relates the speeds of the two legs of the trip will be

\frac{640}{x-40}+\frac{640}{x}=4

5 0
3 years ago
PLEASE HELPPPPP i´ll give brainliest
Vinvika [58]

Answer:

1. 7^{2}

2. (-3)^{5}

3. 4

4. k^{6}

5. p^{6}

6. 3^{2}

7. (-a)^{4}

8. 6^{4}

9. 9^{3}

10. 4y(z^{3} )

11. r^{4}tu^{2}

12. 5^{3}q^{2}

13. 8^{2}c^{4}d^{3}

14. -w^{2} v^{5}

15. b^{9}

16. 10^{3} -2^{3} m^{3}

Hope this helps.

4 0
3 years ago
Other questions:
  • Okay so I'm struggling at this particular set of questions on Khan Academy. Anyone got any ideas?
    10·2 answers
  • Whats is the answer to 5/8 -1/10
    8·1 answer
  • Im stuck on my homework plz help
    6·2 answers
  • <img src="https://tex.z-dn.net/?f=5x%20-%2010%20%5Cleqslant%2020" id="TexFormula1" title="5x - 10 \leqslant 20" alt="5x - 10 \le
    14·1 answer
  • 3 – 2x ≥ 5 or 3(x – 2) + 1 &gt; 7
    8·2 answers
  • What is the probability that a point chosen at random in the given figure will be inside the larger circle and outside the small
    7·2 answers
  • The quotient of a number w and(-8), which is then increased by 7
    10·1 answer
  • Factor 7x+21 using the gcf
    6·1 answer
  • A new bottle of juice can be exchanged with three empty julce bottles.
    12·1 answer
  • What are the coordinates for b c d and e ??
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!