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s2008m [1.1K]
3 years ago
10

(2x-1)(x+4)=0 need this question

Mathematics
2 answers:
eduard3 years ago
6 0

Answer:

x = 1/2 or x = -4

Step-by-step explanation:

Since the product equals zero, use the zero product rule.

(2x - 1)(x + 4) = 0

2x - 1 = 0 or x + 4 = 0

2x = 1   or   x = -4

x = 1/2 or x = -4

Kobotan [32]3 years ago
5 0

Answer: you have 2 solutions for that equation, 1/2 and -4

Step-by-step explanation:

(2x-1)(x+4)=0

2x^2+8x-x-4=2x^2+7x-4

use the formula for quadratic equations

x₁ and x₂  =-(7 (+-)\sqrt49+32)/4=

we have x1= 1/2 and x 2=4

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Sladkaya [172]

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You put the numbers twice, so I can't comprehend it.

Step-by-step explanation:

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3 years ago
How can Kendra determine if the function is actually linear?
pashok25 [27]

Answer:

D. She can check to see if the rate of change between the first two ordered pairs is the same as the rate of change between the first and last ordered pairs.

Step-by-step explanation:

Find the rate of change between first two ordered pairs and the second two ordered pairs:

1. Points (2,4) and (3,9). Rate of change:

\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{9-4}{3-2}=\dfrac{5}{1}=5

2. Points (3,9) and (4,16). Rate of change:

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8 0
3 years ago
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Answer the question right or I report you
zubka84 [21]

Answer:

3 ÷ 0.25

Step-by-step explanation:

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3 0
3 years ago
Can some please answer this
Sonbull [250]

9514 1404 393

Answer:

  B  (2 violet)

Step-by-step explanation:

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Subtracting the second equation from the first gives ...

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2 years ago
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A rectangular patio has a length of 12 yards and a width of 8.6 yards.
Savatey [412]

Area = Length x width

Area = 12 x 8.6

Area = 103.2 square yards.

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