1.

svlad2 [7]

Solutions

1) Equation
⇒ (2x+3)(x−4)

⇒(2x+3)(x+−4)
⇒(2x)(x)+(2x)(−4)+(3)(x)+(3)(−4)
⇒2 $x^{2}$ −8x+3x−12
⇒2 $x^{2}$ −5x−12

Answer - 2 $x^{2}$ −5x−12

7 0

4 years ago

I really need help!!!I will mark as brainest :)

ad-work [718]

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Rule-times 2

4 0

4 years ago

Suppose a normal distribution has a mean of 62 and a standard deviation of 4. What is the probability that a data value is betwe

Anon25 [30]

Answer:Given a normal distribution with μ = 62 and σ = 4., calculate the 68-95-99.7 rule, or three-sigma rule, or empirical rule ranges

Calculate Range 1:

Range 1, or the 68% range, states that 68% of the normal distribution values lie within 1 standard deviation of the mean

68% of values are within μ ± σ

μ ± σ = 62 ± 4.

62 - 4. <= 68% of values <= 62 + 4.

58 <= 68% of values <= 66

Calculate Range 2:

Range 2, or the 95% range, states that 95% of the normal distribution values lie within 2 standard deviations of the mean

95% of values are within μ ± 2σ

μ ± 2σ = 62 ± 2(4.)

62 - 2 x 4. <= 95% of values <= 62 + 2 x 4.

62 - 8 <= 95% of values <= 62 + 8

54 <= 95% of values <= 70

Calculate Range 3:

Range 3, or the 99.7% range, states that 99.7% (virtually ALL) of the normal distribution values lie within 3 standard deviations of the mean

99.7% of values are within μ ± 3σ

μ ± 3σ = 62 ± 3(4.)

62 - 3 x 4. <= 99.7% of values <= 62 + 3 x 4.

62 - 12 <= 99.7% of values <= 62 + 12

50 <= 99.7% of values <= 74

Step-by-step explanation:

4 0

3 years ago

Please help! find the value of x

Serga [27]

I needed points sorry

4 0

3 years ago

Read 2 more answers

Consider this rational equation. 1 x 1 x − 2 = 1 4 use the least common denominator to simplify the rational equation into a sta

ratelena [41]

By using least common denominator, the rational equation can be expressed into a standard form quadratic equation as x^2 - 10x + 8 = 0.

In this question,

The rational equation is,

$\frac{1}{x}+\frac{1}{x-2}=\frac{1}{4}$

The standard form quadratic equation can be expressed as

$ax^{2} +bx+c=0$

The above rational equation can be expressed into a standard form quadratic equation by using least common denominator method as,

⇒ $\frac{1}{x}+\frac{1}{x-2}=\frac{1}{4}$

⇒ $\frac{(x-2)+x}{(x)(x-2)}=\frac{1}{4}$

⇒ $\frac{2x-2}{x^{2} -2x}=\frac{1}{4}$

⇒ $4(2x-2)=x^{2} -2x$

⇒ $8x-8=x^{2} -2x$

⇒ $x^{2} -2x-8x+8=0$

⇒ $x^{2} -10x+8=0$

Hence we can conclude that by using least common denominator, the rational equation can be expressed into a standard form quadratic equation as x^2 - 10x + 8 = 0.

Learn more about quadratic equation here

brainly.com/question/18256931

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5 0

1 year ago