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
Dominik [7]
3 years ago
12

Simplify: 7x2 – 4x + x2 – 3

Mathematics
1 answer:
Margarita [4]3 years ago
3 0

Answer:

  8x² -4x -3

Step-by-step explanation:

The x² terms are "like" terms, so can be combined. They have the same variable to the same power.

  7x² -4x +x² -3

  = (7+1)x² -4x -3 . . . . use the distributive property to rewrite 7x² +x²

  = 8x² -4x -3

You might be interested in
Describe a real-life situation that could be modeled by dividing two rational numbers.
Aloiza [94]
Amount of dresses you could make with material and how many marbles can fit into a container.
4 0
4 years ago
..The total of Joshua's savings and $350 is $925.<br><br><br> Please help
Vlad [161]

Answer:

Joshua's Savings = $575

Step-by-step explanation:

If the total amount is $925 and you added $350 to x (Josh's Savings) than all we have to do is subtract the $350 from the $920 to solve for x,...

$925 - $350 = $575

Joshua's Savings is equal to $575 dollars,...

Hope that helps,... Chow,...!

5 0
3 years ago
Read 2 more answers
4. What are the values of x and y? HELP PLEASE
Sergeeva-Olga [200]
The bottom answer is correct. I had some trouble with this so I had to find x and y in separate parts.

TO FIND X
notice that the top triangle and bottom triangles are similar, meaning if you multiple all three sides of one by a specific number, it becomes the same size as the bottom triangle.

17 x n = 8, therefore n=8/17
8 x n = X, therefore X=64/17

For some reason, this does not give a correct value for Y, so I had to use trig 

TO FIND Y 

Notice that the angle DAB is the same as DBC (lets call this angle Ø)

Using trig rule, we know that the cos of an angle is equal to the adjacent side divided by the hypotenuses.

We can now form some equations:

cosØ = 15/17 (from the top triangle)
cosØ = 8/Y      (from bottom triangle)
Now we know that Y=(8x17)/15 = 136/15

X=64/15  Y=136/15
8 0
3 years ago
WILL GIVE BRAINLIEST! Someone please graph these, I can't graph them.
nadezda [96]

Answer:

see attached image

Step-by-step explanation:

F(x) = 2x + 5 is a linear graph because the exponent on x is 1.  I tell my students that think of graphs having one less turn/corner that the value of the highest exponent.  so since 2x has a exponent of 1, 1-1 =0 so it has no turns or its a straight line.

this has a slope of 2 or 2/1 or up 2 and right 1 from the y intercept which is 5

so mark 5 on the y axis and a from there go up 2 and right 1 and make another point.  Join these points and you have your graph


and


g(x) = (x-5)/2  is its inverse and is found:

F(x) = 2x + 5 write it this way y = 2x + 5

now swap the x and y    x = 2y - 5

solve for y

x = 2y + 5

- 5       -5

x - 5 = 2y

/2        /2

(x-5)/2 = y

it can be written as y = x/2 - 5/2

and graphed the same way as above with a  1/2 slope and -5/2 y intercept

4 0
3 years ago
Read 2 more answers
What is the probability of getting zero heads in six tosses?
lesantik [10]
The ratio of the probability of that is 3 : 6
3 0
4 years ago
Other questions:
  • Simplify x^2-4x-32/x^2+7x+12
    9·2 answers
  • Multiplying Improper Fractions
    8·1 answer
  • Picture shownnnmn helppp
    11·1 answer
  • 200x50 mathematics problem
    14·2 answers
  • Mt. Young bought some hamburgers for his cookout. The price was $32,17, but, le found that hamburger parties were on special for
    9·1 answer
  • How do you use area on funny looking shape
    9·1 answer
  • 4x+9=-3 simplify the following expression
    14·1 answer
  • bill,bob,and joe each have 9 oranges. Then a stranger gave Tim 4 oranges. He then gave 3 to his mother.​
    14·1 answer
  • 49 to the nearest integer
    9·1 answer
  • Need help asap! Having trouble !
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!