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
andrew-mc [135]
4 years ago
10

Simplify the expression. (5x2 - x - 7) + (2x2 + 3x + 4)

Mathematics
1 answer:
kifflom [539]4 years ago
3 0

Answer:11+2x

Step-by-step explanation:

(10-7-x)+(4+4+3x)

3-x+8+3x

3+8+3x-x

11+2x

You might be interested in
Let $f(x)$ be a function defined for all positive real numbers satisfying the conditions $f(x) > 0$ for all $x > 0$ and $f
algol [13]
Suppose we choose x=1 and y=\dfrac12. Then

f(x-y)=\sqrt{f(xy)+1}\implies f\left(\dfrac12\right)=\sqrt{f\left(\dfrac12\right)+1}\implies f\left(\dfrac12\right)=\dfrac{1+\sqrt5}2


Now suppose we choose x,y such that

\begin{cases}x-y=\dfrac12\\\\xy=2009\end{cases}


where we pick the solution for this system such that x>y>0. Then we find

\dfrac{1+\sqrt5}2=\sqrt{f(2009)+1}\implies f(2009)=\dfrac{1+\sqrt5}2

Note that you can always find a solution to the system above that satisfies x>y>0 as long as x>\dfrac12. What this means is that you can always find the value of f(x) as a (constant) function of f\left(\dfrac12\right).
3 0
3 years ago
Read 2 more answers
Explain how you could use the construction tool or a compass and straightedge to create a line segment that is twice as long.
ycow [4]

Answer: Use a compass to measure the length of AB. Draw an arc from point B (or point A) with that distance. Extend line AB through that arc and label the intersection as point C. AC is twice the length of AB.

3 0
4 years ago
How many liters of a 90% acid solution must be added to 6 liters of a 15% acid solution to obtain a 40% acid solution?
tatiyna

3 liters must be added

4 0
3 years ago
List all the factors of 19. Tell whether 19 is prime or composite.
andreyandreev [35.5K]

Answer:

19 is a prime number, thus making the only factors 1, 2, 19. (Not necessary to include 1)

Step-by-step explanation:

8 0
3 years ago
Explain why 323.202 is least<br> than 323.21 even though 202 is Grater than 21
matrenka [14]
It is less than 324.21, because as you can see, all the numbers are equal until you get to the 0 & 1, and 1 is greater than 0
7 0
3 years ago
Read 2 more answers
Other questions:
  • PIZZA PARTY 3 medium pizzas for $10.50 how much does it cost to buy 10 medium pizza?
    12·2 answers
  • Peter is making an "X marks the spot" flag for a treasure hunt. The flag is made of a square white flag with sides of 12 inches.
    14·1 answer
  • True or False. Explain your answer. csc^-1[csc(-pi/4)]=-pi/4 sec[sec^-1(sqrt3)]=sqrt3
    5·2 answers
  • Naomi needs 2 cups of sugar for a cake she is baking she only has a 1/4 cup measuring cup how many times will Naomi need to feel
    11·2 answers
  • The speed limit on a highway is 55, Elanor is driving below the speed limit how much faster can she go without passing the speed
    5·1 answer
  • Meghan has two less dimes as she does nickels and one more than double the amount of quarters as she does nickels for a total of
    5·1 answer
  • How would you scale down by a factor of 1/10?
    12·1 answer
  • Needing help with getting the slope
    14·2 answers
  • tina baked 552 chocolate chip cookies. she placed these cookies into boxes each contain 6 cookies. if she sell each box for $50,
    11·1 answer
  • Help me with this!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!