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Leni [432]
3 years ago
15

Can x in f(x) be replaced by another letter? For example f(a);Would that be the same thing?

Mathematics
2 answers:
Fantom [35]3 years ago
7 0

Answer: It should be the same thing. The x and the a just represent variables. If you had f(2) you would plug that in the x spot, so it should be the same if it were a instead of x.

Step-by-step explanation:

Murljashka [212]3 years ago
5 0

Answer:

Yes

Step-by-step explanation:

X is just an unknown variable which can be substituted as another variating condition. I.E Function of x can be written as Function of a. If no other condition is present.

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Please Help with math word problem.
motikmotik

Answer:

Adult Tickets: 173

Student Tickets: 43

Explanation:

  • To solve this problem, you'll need to set up a system of equations.
  • Assume a = # of adult tickets sold
  • Assume s = # of student tickets sold

2: a + s = 216; 1: 10.25a+ 8s= 2117.25

2: <<As the total number of tickets sold from both sides is equal to 216>>

1: <<Each adults ticket (a) costs $10.25 and each student ticket (s) costs $8, and the total amount of money earned (2117.25) from sales is the combination of these two))>>

  • Note that there are two ways to solve systems of equations (by elimnation and substitution), in this case I'll use elimnation as substitution requires one of the variables in one of the two equations to be isolated.

  • In this case, I'll elimnate a.

a + s = 216

10.25a + 8s = 2117.25

  • In order to elimnate a, it has to be equal to - 10.25 so that it cancels out + 10.25 (so you have to multiply everything on the first equation by 10.25 ((what you do to one part, you'll do to all the other parts)).

-10.25a -10.25s = -2214

10.25a + 8s = 2117.25

  • a cancels, and now you solve accordingly.

-2.25s/-2.25 = -96.75/-2.25

s = 43

  • You could solve for a using this same method, but it's easier to use the first formula <<a+s=216>> to find a.

a + 43 = 216

- 43 -43

a = 173

4 0
3 years ago
Write the equation of the line parallel to y=1/4 x+6 that passes through the point (-4, 3) in slope-intercept form.
AnnyKZ [126]

Answer: y=1/4x + 4  

Step-by-step explanation:

Parallel lines have the same slopes but different y-intercepts so the new equation will obtain the same slope as the line y= 1/4x + 6  and the slope is 1/4 so we need to use the given coordinate to find the y-intercept to write the equation.

(-4,3)  the x coordinate is -4 and the y coordinate is 3

3 = 1/4(-4) + b  

3 = -1 + b

+1   +1

b= 4  

The y intercept is 4 so the equation will be y=1/4x + 4

6 0
3 years ago
Select the correct answer. Simplify the expression below. 4x(3x − 7) − 19x2 A. -7x2 − 7 B. -35x2 C. -7x2 − 28x D. -31x2 − 28x
morpeh [17]

Answer:

C. -7x^2-28x

Step-by-step explanation:

The given expression is 4x(3x-7)-19x^2

We apply the distributive property to expand the parenthesis

12x^2-28x-19x^2

Regroup similar terms to get:

12x^2-19x^2-28x

Combine the similar terms to obtain:

-7x^2-28x

The correct option is C.

5 0
3 years ago
I can't seem to figure this out. Can someone please help me preferably ASAP! 15 POINTS!!
Alona [7]
1/3 of 

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3 0
3 years ago
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What is 6*3 then add that plus 7
Zigmanuir [339]
6 * 3 is 18 then add 7 it will be 25
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4 years ago
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