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diamong [38]
3 years ago
6

Evaluate the function f or f(-9) if f(x) = 3/5x +8Help please​

Mathematics
2 answers:
Tcecarenko [31]3 years ago
8 0

Answer:

f(-9)=2.6

Step-by-step explanation:

Plug in -9 for x

f(-9)=3/5(-9)+8

Combine like terms

f(-9)=-5.4+8

f(-9)=2.6

Licemer1 [7]3 years ago
6 0

Answer:

F(-9) would be 13/5

Step-by-step explanation:

1.) add -9 into the equation as the subsitute for x

(should look like \frac{3}{5} (-9)+8 )

2.) Solve the equation with basic algebra

(should look like \frac{-27}{5} +8\\\frac{-27}{5} +\frac{40}{5} =\frac{13}{5}

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Which expression is equivalent to 6(4(6x-4y)-5) ?
iren2701 [21]

Answer:

144x - 96y - 30

Step-by-step explanation:

<u>Step 1:  Distribute </u>

6(4(6x - 4y) - 5)

6((4 * 6x) + (4 * -4y) - 5)

6(24x - 16y - 5)

<u>Step 2:  Distribute again </u>

<u />(6 * 24x) + (6 * -16y) + (6 * -5)

144x - 96y - 30

Answer:  144x - 96y - 30

8 0
2 years ago
Write the quadratic equation in general form. (x - 3)^ 2 = 0
algol [13]
The answer is:  x² – 6x + 9 = 0  .
_____________________________________________________
Explanation:
________________________________________________________

Given:  (x – 3)² = 0 ;  write as: general form:  "ax² + bx + c = 0";  a ≠ 0 .
<span>
Note:  </span>(x – 3)² = (x – 3)(x – 3) = x² – 3x – 3x + 9 = x² – 6x + 9 ;
___________________________________________________
Rewrite: (x – 3)²  =  0 ;  →
           as:   x² – 6x + 9 = 0  ; which is our answer.
____________________________________________
→   x² – 6x + 9 = 0  ; is in "general form", or "standard equation format"; that is: " ax² + bx + c = 0 ";  (a ≠ 0) ;
             → in which: 
   a =  1 (implied coefficient, since anything multiplied by "1" is that same                                                                                                                    value);
   b = -6; 
   c =  9
_______________________________________________________
5 0
2 years ago
Read 2 more answers
Question 18<br> Decrease £4600 by 20%
NISA [10]

Answer:

3680

Step-by-step explanation:

So, we would subtract. But, first we have to find the percent. But, we all use calculators so, it is 920. Saves us a lot of time.

4600 - 920 = 3680

Therefore your answer is 3680

Hope this helps!

4 0
3 years ago
I am not sure if i did this right she wants us to distribute and get only one x on one side and find the answer.
umka21 [38]


I got x=18


3(x-4)-2(3x+4)=4(3-x)+5x+4

3x-12-6x-8=12-4x+5x+4

3x-20=16+x

2x=36x

x=18

5 0
2 years ago
Two angles are supplementary. The first angle measures 40 degrees. What is the measurement of the second angle
Dmitrij [34]
Supplementary angles add up to 180º
If one is 40º, then the other is (180º-40º) = 140º

None of those choices describes a plane.
choice C is the only example of a plane.

8 0
3 years ago
Read 2 more answers
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