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kari74 [83]
3 years ago
7

Someone please answer this it’s due today I need help

Mathematics
1 answer:
alisha [4.7K]3 years ago
3 0

Answer:

x = 8

Step-by-step explanation:

3x - 5 = 2.5x + 3 - (x - 4)

<em>open parentheis</em>

3x - 5 = 2.5x + 3 - x + 4

3x - 5 = 1.5x + 7

<em>subtract 1.5x from both sides of the equation</em>

3x - 1.5x - 5 = 7

1.5x - 5 = 7

<em>add 5 to both sides of the equation</em>

1.5x = 7 + 5

1.5x = 12

<em>divide both sides of the equation by 1.5</em>

1.5x/1.5 = 12/1.5

x = 12/1.5

x = 8

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Answer:

23.76

Step-by-step explanation:

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3 years ago
Read 2 more answers
Which option is an even function?
Grace [21]

The correct answer is option D. Which is the even function is f (x) = x⁴.

<h3>What is an even function?</h3>

The function in which when the sign of the input variable is changed the output remains the same is called the even function. Mathematically we can write it as f(x) = f(-x ).

let us check the given four options:-

A f(x) = √x ;  f(-x) = √-x  here f(x) ≠ f(-x)

B f(x) = x ;  f(-x) = -x    here f(x) ≠ f(-x)

C f(x)  = x³ + 1 ; f(-x) = -x³ + 1  here f(x) ≠ f(-x)

D f(x)  = x⁴  ;  f(-x) = (-x)⁴ = x⁴  here f(x) = f(-x)

We can see that in the option D the f(x) = x⁴ is an even function because f(x) = f(-x).

Therefore the correct answer is option D. Which is the even function is f (x) = x⁴.

To know more about even functions follow

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4 0
2 years ago
Factor the following polynomial completely <br><br> 4x^2-100
Murrr4er [49]

Answer:

4 [ ( x - 5) ( x + 5) ]

Step-by-step explanation:

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4 0
3 years ago
Select the correct answer.
Vikki [24]

Answer:

the answer is A. 3225

Step-by-step explanation:

S₃₀ = 30/2 [ 2 x 6 + (30 - 1) x 7 ]

15 [ 12 + 29 x 7 ]

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3 0
2 years ago
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timofeeve [1]

Answer:

16 dimes

Step-by-step explanation:

He already has 7, and got 9 more, so we can add 7 and 9

7+9 =16

So, Dan has 16 dimes now

Hope this helps! :)

3 0
3 years ago
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