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Ulleksa [173]
3 years ago
5

Expand and simplify (x-3)(x+5)​

Mathematics
1 answer:
Tom [10]3 years ago
6 0

Answer: x² + 2x - 15

Step-by-step explanation:

<u>Concept:</u>

When we encounter questions that ask us to simplify expressions that consist of multiple parentheses, it is suggested to use the FOIL method to ease the process.

  • First
  • Outer
  • Inner
  • Last

<u>Solve:</u>

Given

(x - 3) (x + 5)

Expand parentheses

x² + 5x - 3x - 15

Combine like terms

x² + (5x - 3x) - 15

x² + 2x - 15

Hope this helps!! :)

Please let me know if you have any questions

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sergij07 [2.7K]

D.

If Tony and Michael ate 26 you take that away from 60 which equals 34.

           26-60=34

7 0
3 years ago
Between what two consecutive integers is <img src="https://tex.z-dn.net/?f=%5Csqrt182" id="TexFormula1" title="\sqrt182" alt="\s
Elden [556K]

Answer:

C. 13 and 14

Step-by-step explanation:

They notice that the square root of 182 is between 13 an 14, and it gives them the idea that the numbers 13 and 14 are the solution.

Let n be the smaller of the two consecutive integers.

   Then the other integer is  (n+1).

   We are given that  

      n*(n+1) = 182.

   Simplify

      n^2 + n - 182 = 0,

   Factor left side

      (n-13)*(n+14) = 0.

   The solutions are  n= 13  and  n= -14.

   You may check that both of them satisfy the problem' condition, giving you two answers

       the pair  (13,14)  and the pair  (-14,-13).

 

Many people prefer to solve this problem in a short way.

   They notice that the square root of 182 is between 13 an 14,

   and it gives them the idea that the numbers 13 and 14 are the solution.

   Then these people get the next idea that if the product of 13 and 14 is equal to 182,

   then the product of the opposite numbers is also 182, so

           both the pairs (13,14)  and  (-14,-13)  are solutions.

Solved and explained in detailed and short modes.

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3 years ago
30 POINTS + BRAINLIEST!!! PLEASE HELP ASAP!!!
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Answer:

CNBD

Step-by-step explanation:

From the diagram, we can see that:

\displaystyle BL\parallel CA

Then by Alternate Interior Angles:

\angle LBA\cong \angle CAB\text{ and } \angle BLC\cong \angle ACL

From vertical angles, we also know that:

\displaystyle \angle BKL\cong \angle AKC

This is all we can gather from the given image. Knowing only three pairs of angles cannot prove congruence, as proving congruence requires at least one side.

Congruence cannot be determined.

7 0
3 years ago
Read 2 more answers
Who knows this answer ?!!​
kogti [31]

Answer:

D is the answer

Step-by-step explanation:

twice as many children is 24 because 12x2 is 24

5 0
3 years ago
I have a geometry test I’m gonna fail. If you know any of these answers please put the number of the question,than the answer. I
blsea [12.9K]

Answer:

Step-by-step explanation:

20) Angles 1 and 2 are supplementary angles( sum of angle 1 and angle 2 is 180 degrees)

21) Angles 1 and 2 are supplementary angles( sum of angle 1 and angle 2 is 180 degrees)

22) Angle TUW + Angle WUV =Angle TUV

Therefore

(7x-9) + (5x - 11) = (9x+1)

7x-9 + 5x - 11 = 9x+1

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23) GEF - 13 = 5DEG

and DEF = 149 degrees

GEF = 5DEG + 13

Sum of angles (GEF + DEG)=DEF

Therefore,

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6DEG = 149 + 13 = 162

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13x-2 = 180

13x = 180+2 = 182

x = 182/13 = 14

25) 5x + 4 + 8x - 7 = 180( sum of supplementary angles is 180)

13x = 180+7-4= 183

x = 183/13 = 14.08

3 0
3 years ago
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