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3 years ago

Find the range of values of x for which 2x2 – 5x + 2 > 0

Mathematics

1 answer:

Alchen [17]3 years ago

7 0

Answer:

x < 1/2 and x>2

Step-by-step explanation:

first solve the eqn,

2x2 -5x +2 = 2x2 -4x -x +2 = 2x(x-2) - 1(x-2) = (2x-1)(x-2)

since the questions asks for >,

x < 1/2 and x>2

if the question had asked for <,

1/2<x<2

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2 years ago

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Slav-nsk [51]

Answer:

-0.6309

Step-by-step explanation:

Using the change of base formula,

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3 years ago

The 6 consecutive integers is 393 what is the third number in this sequence

MAXImum [283]

X+(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=393
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3 years ago

If the mean heights of three groups of students consisting of 20,16 and 14 students are 167m, 150m and 1.40m respectively find t

Aleonysh [2.5K]

Answer:

1.54 m

Step-by-step explanation:

Given information:

Three groups of students

20 students with a height of 1.67 m
16 students with a height of 1.50 m
14 students with a height of 1.40 m

⇒ Total number of students = 20 + 16 + 14 = 50

To find the mean height of all the students, divide the sum of all the students' heights by the total number of students:

$\begin{aligned}\implies \sf mean\:height & =\dfrac{(20 \times 1.67)+(16 \times 1.50)+(14 \times 1.40)}{50}\\\\ & = \dfrac{33.4+24+19.6}{50}\\\\ & = \dfrac{77}{50}\\\\ & = 1.54\:\: \sf m\end{aligned}$

Therefore, the mean height of all the students is 1.54 m

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2 years ago

Read 2 more answers

I will mark you brian list plz help.

IgorLugansk [536]

Answer:

N, P

Step-by-step explanation:

The answer is N, and P.

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3 years ago

Read 2 more answers

Find the range of values of x for which 2x2 – 5x + 2 > 0​

Find the range of values of x for which 2x2 – 5x + 2 > 0