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Black_prince [1.1K]
2 years ago
7

Find the missing number:

Mathematics
1 answer:
Makovka662 [10]2 years ago
7 0

Answer:

20%

Step-by-step explanation:

If you see they say that the number decreased is 10% each and they say it two times. we could see that the missing number is as big as the length of two 10% together, so if you add them two you get 20%.

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Cuanto es 12 + 1? Porfavor es para mi tarea de matemáticas.
Nastasia [14]

Answer:

13

is your answer

Step-by-step explanation:

6 0
2 years ago
For the functions f(x) = x^2+ 8x + 2 and g(x) = -5+9, find (f•g)(x)and (f.g)(-1).
Ne4ueva [31]

Answer:  (f·g)(x) = -5x³ - 31x² + 62x + 18

               (f·g)(-1) = -70

(fog)(x) = 25x² - 130x + 155

(fog)(-1) = 310

<u>Step-by-step explanation:</u>

f(x) = x² + 8x + 2          g(x) = -5x + 9

(f·g)(x) = (x² + 8x + 2)(-5x + 9)

          = -5x³ + 9x²

                    - 40x² + 72x

            <u>                    - 10x + 18</u>

          = -5x³ - 31x² + 62x + 18

(f·g)(-1)= -5(-1)³ - 31(-1)² + 62(-1) + 18

         =  -5(-1)  - 31(1)    - 62      + 18

         =    5     -   31      - 62      + 18

         =  -70

****************************************************************************************

(fog)(x) = (-5x + 9)² + 8(-5x + 9) + 2

           = 25x² - 90x + 81

                       - 40x + 72

              <u>                   +   2</u>

           = 25x² - 130x + 155

(fog)(-1) = 25(-1)² - 130(-1) + 155

            =   25    +  130    + 155

            = 310

<em>It wasn't clear if you wanted multiplication or composition so I solved both.</em>

6 0
3 years ago
A new 70-inch tv is on sale. With sales tax 5%, the cost of the tv is $3150. What is the purchase
SVETLANKA909090 [29]

x - 0.05x = 3150 \\ 0.95x = 3150 \\ x = 3315
4 0
3 years ago
How do I solve this problem
quester [9]
I think x equals 54


Hope this helps
4 0
3 years ago
Transitive property: if ____=-11^3 and -11i^3=11i then _____=11i
Semenov [28]

Answer:

if -11i^3 =-11^3 and -11i^3=11i then -11^3=11i

if I'm wrong pls correct me but I'm pretty sure this is

5 0
2 years ago
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