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Zepler [3.9K]
3 years ago
10

How would you find the solutions to this quadratic equation y=2x^2-6x-8

Mathematics
2 answers:
aleksandrvk [35]3 years ago
8 0

Answer:

Factoring.

General Formulas and Concepts:

<u>Algebra I</u>

  • Factoring
  • Finding roots of quadratics

Step-by-step explanation:

<u>Step 1: Define</u>

y = 2x² - 6x - 8

0 = 2x² - 6x - 8

<u>Step 2: Find roots</u>

  1. Factor 2:                    0 = 2(x² - 3x - 4)
  2. Factor:                        0 = 2(x - 4)(x + 1)
  3. Find roots:                 x = -1, 4

And we have our final answer!

Marysya12 [62]3 years ago
7 0

Answer:

first take 2 out of the equation

y=2(x^2-3x-4)

then factor

y=2(x-4)(x+1)

then solve

(x-4)=0 .  (x+1)=0

x=4 .          x=-1

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A lawn mower manufacturer incurs a total of $34,816 in overhead costs and $388 per lawn mower in production costs. How many lawn
blsea [12.9K]
Let x represent the amount of lawn mowers that were manufactured

The company has to pay $34,816 before they even make any lawn mowers plus $388 per lawn mower.

((34816+388x)/x)=660
34816+388x=660x
34816=272x
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Therefore, there were 128 lawn mowers manufactured
5 0
4 years ago
Which property is used to simplify the expression 5(3x +18) to 15x+90
natka813 [3]

Answer:

Distributive

Step-by-step explanation:

You distribute the 5 into 3x+18, multiplying it by each part of the equation (each part is separated by one of these signs: +, -, x, or /) to get 15x (from 5 x 3x) plus 60 (from 5 x 18).

6 0
3 years ago
The probability of drawing two nickels from a bag at random without replacement is 33/95 . The probability of drawing a nickel f
Natasha_Volkova [10]
The probability that two events occur is equal to the product of the individual events happening or occurring. For this item, we let x be the probability that is unknown such that the relationship between them may be expressed as,
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The value of x from the equation is 11/19. 
7 0
3 years ago
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Varvara68 [4.7K]

Answer:

\frac{6}{8} or \frac{3}{4}

Step-by-step explanation:

Convert the mixed numbers into improper fractions.

2\frac{3}{8}-1\frac{5}{8}=\frac{19}{8}-\frac{13}{8}

Since the two fractions have the same denominator, just subtract the numerators.

\frac{19}{8}-\frac{13}{8}=\frac{6}{8}

If required, rewrite the fraction in simplest form.

\frac{6}{8}=\frac{3}{4}

7 0
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so how many "days worth" did all 15 do on the 24 days, well, 15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15+15, namely 15 * 24, or 360 days worth of work.

since it takes 360 days worth of work to do the whole wiring, in how many days would 18 electricians do it?   360/18.
4 0
4 years ago
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