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
zhannawk [14.2K]
2 years ago
12

What does x - 9 multiplied by x + 4 equal

Mathematics
1 answer:
GarryVolchara [31]2 years ago
5 0

Answer:

x^2 - 5x -36

Step-by-step explanation:

multiply x-9 by x to get x^2 -9x. multiply x-9 by 4 to get 4x-36. add these two together to get x^2 - 9x + 4x - 36. simplify to get x^2 - 5x -36

You might be interested in
If tan y = 3 over y and cos x = y over z what is the value of sin x??
LekaFEV [45]
The answer should be C
5 0
3 years ago
Please help im being timed <br><br> Inverse of f(x)=15x+4
rusak2 [61]

Answer:

f^{-1}(x) =

Step-by-step explanation:

let y = f(x), then rearrange making x the subject

y = \frac{1}{5}x + 4 ( subtract 4 from both sides )

y - 4 = \frac{1}{5}x ( multiply both sides by 5 to clear the fraction )

5y - 20 = x

Change y back into terms of x with x = f^{-1} (x) , then

f^{-1} (x) = 5x - 20

3 0
3 years ago
How can doubling a known fact be helpful when finding products mentally
My name is Ann [436]

Answer:

by doing that

Step-by-step explanation:

if x = y so y is z and you can find thatKegunaan Chi-Square:

Uji Chi Square berguna untuk menguji hubungan atau pengaruh dua buah variabel nominal dan mengukur kuatnya hubungan antara variabel yang satu dengan variabel nominal lainnya (C = Coefisien of contingency).

8 0
2 years ago
Orlando is doing a math problem where he needs to dilate a triangle by a scale factor of four. The ordered pairs for his pre-ima
Rainbow [258]
Dilation refers to a non rigid motion where a figure is transform and its image has the same form but a different size measure.
Dilation is define by the rule (x,y)-- (kx, ky) where k represents the scale factor.

On this exercise is given that a triangle with vertices (-2,1), (8,4), and (3,0) was dilated by a scale factor of four, and it is asked to find the vertices of the image of the triangle after the dilation occurred.

Pre-image                       Image
(-2,1)  --   (-2*4,1*4)   --   (-8,4)
(8,4)   --    (8*4,4*4)   --    (32,16)
(3,0)   --    (3*4,0*4)   --    (12,0)

The coordinates representing the vertices of the triangle's image are (-8,4), (32,16), and (12,0); meaning that the ordered pair which is not a coordinate for a point in the triangle's image is (2,1).



5 0
3 years ago
Read 2 more answers
ABC is isosceles with AB=AC=8 units and BC=6 units. D and E are midpoints of AB and BC respectively. Calculate the length of DE?
Allushta [10]
The triangle is drawn and is shown in the image attached with.

We get two similar triangles. Triangle ABC and Triangle ADE. Since the triangles are similar the ratio of their corresponding sides will be the same. 

D and E are the midpoints of AB and BC, therefore, AD and AE are both 4 units in length. Using the property of similar triangles, we can say:

AD : DE= AB : BC
AD = 4 units
AB = 8 units
BC = 6 units
DE = unknown = x units

So,

4 :x = 8 : 6 \\  \\ &#10; \frac{4}{x} = \frac{8}{6}  \\  \\ &#10;x=4* \frac{6}{8}=3 &#10;

Therefore, the length of DE will be 3 units

6 0
3 years ago
Other questions:
  • In the diagram below, P and Q are points on a circle with centre O.
    10·1 answer
  • Joe is planning a trip to Houston and has calculated $450.95 for lodging and $98.00 for food and we’re $114.50 for gasoline. how
    7·1 answer
  • Plzzzz helppppppppp and free kodak
    15·2 answers
  • After buying some new coins, Andre has 80 coins in his collection. Last month, he had 50 coins. The size of his current collecti
    10·1 answer
  • Suppose that a "code" consists of 3 digits, none of which is repeated. (A digit is one of the 10 numbers 0, 1, 2, 3, 4, 5, 6, 7,
    6·1 answer
  • Which value of x makes this inequality true?<br> X + 9 &lt; 4x
    14·1 answer
  • EMERGENCY QUESTION! No Decimal answers plz!
    8·2 answers
  • Find the value of x.
    6·1 answer
  • Here's some points .
    13·2 answers
  • −<br> 3<br> (<br> 7<br> −<br> 2<br> x<br> )<br> =<br> −<br> 1<br> −<br> 4<br> x
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!