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bixtya [17]
3 years ago
9

1. Which line shows the first error in the solution?

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
3 0
Simple...

Which line shows the first error in the solution?

Line 3

This said, because...

5x-25=15

It'd be adding not subtracting-->>

5x-25=15-25 (No)

5x-25=15
    +25  +25

5x=40 (Yes) 

Thus, your answer.

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For the following exercises, evaluate the function at the indicated values: f (−3); f (2); f (−a); −f (a); f (a + h).
ser-zykov [4K]

Answer:

5. f(x) = -2x² + 3x  

f(-3) = -2(-3)² + 3(-3) = -27

f(2) = -2(2)² + 3(2) = -2

f(-a) = -2(-a)² + 3(-a) = -2a² - 3a

-f(a) = -[-2a² + 3a] = 2a² - 3a

f(a + h) = -2(a + h)² + 3(a + h) = -2(a² + 2ah + h²) + 3a + 3h = -2a² - 4ah - 2h² + 3a + 3h

6. f(x) = 2|3x - 1|

f(-3) = 2|3(-3) - 1| = 2*10 = 20

f(2) = 2|3(2) - 1| = 2*5 = 10

f(-a) = 2|3(-a) - 1| = 2|-3a - 1|

-f(a) = -(2|3a - 1|) = -2|3a - 1|

f(a + h) = 2|3(a + h) - 1| = 2|3a + 3h - 1|

3 0
4 years ago
Use the exponential growth model, A = A0 e^kt to show that the time is takes a population to double (to frow from A0 to 2 A0) is
ludmilkaskok [199]

Answer:

<em>Proof below</em>

Step-by-step explanation:

<u>Exponential Grow Model</u>

The equation to model some time dependant event as an exponential is

A=A_oe^{kt}

Where Ao is the initial value, k is a constant and t is the time. With the value of Ao and k, we can compute the value of A for any time

We are required to find the time when the population being modeled doubles from Ao to 2 Ao. We need to solve the equation

2A_o=A_oe^{kt}

Simplifying by Ao

2=e^{kt}

Taking logarithms in both sides

ln2=lne^{kt}

By properties of logarithms and since lne=1

ln2=kt\cdot lne=kt

Solving for t

\displaystyle t=\frac{ln2}{k}

Hence proven

6 0
3 years ago
HELP PLEASE DUE IN 3 MINUTES
romanna [79]

Answer:

It's 143

Step-by-step explanation:

Your welcome have a good day!!!

4 0
3 years ago
Shane pays $2568 per year in tuition. How much should he budget monthly for it? (Points : 3) $107 $156 $214 $228
Nat2105 [25]
It should be about 214 monthly for tuition for a year
6 0
3 years ago
Read 2 more answers
For the function g defined by g(x)=70−3x find g(−x),−g(x), and −g(−x).
nirvana33 [79]

Answer:

  • g(-x) = 70 +3x
  • -g(x) = -70 +3x
  • -g(-x) = -70 -3x

Step-by-step explanation:

Put the minus signs where the problem statement tells you. As with any function, the argument replaces the variable in the function definition. That is, for g(-x), you put (-x) where x is in the definition of the function.

  g(-x) = 70 -3(-x) = 70 +3x

  -g(x) = -(70 -3x) = -70 +3x

  -g(-x) = -(70 -3(-x)) = -70 -3x

4 0
3 years ago
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