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const2013 [10]
2 years ago
15

Solve for x. 5(x - 10) = 30 – 15xA. x = 1 B. x = 4 C. x = 5 D. x = 8​

Mathematics
2 answers:
Serjik [45]2 years ago
5 0

x=4

Step-by-step explanation:

Distrubutive property: 5x-50=30-15x

get x on one side: 5x-50+15x=30

combine like terms: 20x-50=30

subtract on both sides: 20x=30+50

20x=80

simplify: 20/20=80/20

x=4

Alenkasestr [34]2 years ago
4 0
5x - 50 = 30 - 15x
30+50= 80
-15x - 5x = -20x

-20x = 80

20/80

4

Anwer B.
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Find the amount financed and the finance charge in dollars for the following problem. Choose the correct answers.
diamong [38]

$350 * 30/100 = $ 105 which is down payment.

$350 - $105 = $245 which is left.

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Total will be $105 + $294 = $399

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One wet weekend, 0.86 inches of rain fell on saturday. the next day, 1.52 inches of rain fell. how many inches of rain fell over
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4 0
3 years ago
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Answer please<br> Its for a timed test please answer
ruslelena [56]

Answer:

A.

Step-by-step explanation:

the absolute value of -5 = 5.

5+8=13.

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3 0
2 years ago
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5. How many solutions does the equation<br> 7x + 3x – 8= 2(5x – 4) have? Explain.
GREYUIT [131]

Answer:

Your answer is: Infinitely Many

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Step-by-step explanation:

If you are solving to find all Complex Number Solutions: ↓

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6 0
3 years ago
F(x) = 2x^2 − 3x − 5 Part
riadik2000 [5.3K]

Answer:  Answer  is in the steps..

Step-by-step explanation:

f(x)= 2x^{2} - 3x -5        

A) To find the x intercepts of a parabola we have to set the whole equation equal zero because the x intercept is when y equal zero in other words where f(x) equal zero.

 2x^{2}  - 3x - 5 = 0     Now solve using quadratic formula.

  x = -b±\frac{\sqrt{b^2 -4ac } }{2a}    

  x = 3 ± \sqrt{9+40} /2a  

   x = 3 ± \sqrt{49}  / 2a

   x= 3 ± 7 /4

   x= -1   or x = 5/2  

The x intercepts are  (5/2,0)  and (-1,0)

   

B)  The graph vertex of the graph of f(x)  is going to be at a minimum because the leading coefficient of the function has a positive integer which means the parabola will open up and its vertex will be at the minimum point.

 Using the  x coordinates  we could find their average and find the x coordinate of the   vertex.

\frac{5}{2} + -\frac{1}{1}  =  \frac{3}{2} / \frac{2}{1} = 3/4  

The x coordinate of the vertex  is 3/4 so we will input that into the equation and solve for the y coordinate  

2(\frac{3}{4})^2 - 3 (\frac{3}{4}) - 5   = 18/16 - 9/4 -5  =  -49/8

The y coordinate of the vertex  is  -49/8

So the vertex is (3/4, -49/8)  

C)   First  I will graph the vertex and then graph he two x intercepts and connect then like a U shape.

5 0
3 years ago
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