3 years ago

Which step will get you closest to the solution of this equation? 5⋅(x−2)=7

1 answer:

Paul [167]3 years ago

4 0

When you divide both sides by 5

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Step2247 [10]

The statement "the diagonals are perpendicular ti each other" is sometimes true and sometimes false

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3 years ago

OverLord2011 [107]

Answer:

$2y(x-1)(x^2+x+1)$

Step-by-step explanation:

$~~~2x^3y-2y\\\\=2y(x^3-1)\\\\=2y(x-1)(x^2+x+1)~~~~~~~~~~;[a^3-b^3 = (a-b)(a^2 +ab+b^2)]$

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2 years ago

zubka84 [21]

Answer: 2017

Step-by-step explanation:

Given : The proportion of people that smoke : p=0.3

Margin of error : E= 0.02

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

The formula to calculate sample size ( if proportion is known) :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\\Rightarrow\ n=(0.3)(0.7)(\dfrac{(1.96)}{0.02})\\\\\Rightarrow\ n=2016.84approx2017$

Hence, the required minimum sample would be 2017.

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3 years ago

dolphi86 [110]

Answer:

Step-by-step explanation:

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3 years ago

julia-pushkina [17]

5.2x7.7 = 40.71 cm squared

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3 years ago