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3 years ago

What is this answer and work shown please 5/2x -3 =2

Mathematics

2 answers:

Mars2501 [29]3 years ago

5 0

Answer:

x = 2

Step-by-step explanation:

Given

$\frac{5}{2}$ x - 3 = 2 ( add 3 to both sides )

$\frac{5}{2}$ x = 5 ( multiply both sides by 2 to clear the fraction )

5x = 10 ( divide both sides by 5 )

x = 2

timama [110]3 years ago

4 0

5/2x - 3 = 2

(subtract the three)

5/2x = 5

(multiply both sides by 2/5 so that the fraction can get cancelled out and the x is by itself)

x = 5 x 2/5 so 2

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(-7 2/3) + (-5 1/2) + 8 3/4

motikmotik

Answer:

Step-by-step explanation:

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3 years ago

What would you do if you had $50 million ? <3 ;)

kramer

Answer:

I wouold buy a house first then pay it off and give the rest of the money to my parents as a gift.

Step-by-step explanation:

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3 years ago

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Which of the following inequalities is equivalent to 3-(w+2)>4+2w

Kay [80]

$3 - w - 2 > 4 + 2w \\ - w - 2w > 4 + 2 - 3 \\ - 3w > 6 - 3 \\ \frac{ - 3w}{ - 3} > \frac{3}{ - 3} \\ w < - 1$
The sign at the end changes because both sides of the equation are being divided by a negative number.

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3 years ago

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It has long been reported that human body temperature follows a normal distribution with a mean of 98.6 degrees Fahrenheit. Ther

Kay [80]

Solution :

The normal body temperature of any human body is considered to be 98.6 $^\circ \ F$ . But there is a constant debate about the body temperature of a long held standard to the body temperature.

It is given that :

Null hypothesis and alternate hypothesis :

$H_0 : \mu = 98.6$

And $H_A : \mu > 98.6$

n is given as = 180

Test statistics = 3.64

Prove = 0.018 < α = 0.05 (let reject null hypothesis for α = 0.05 )

Therefore, their results are statistically significant and the result is unlikely due to chance alone.

7 0

3 years ago

A random sample of 85 group leaders, supervisors, and similar personnel revealed that a person spent an average 6.5 years on the

strojnjashka [21]

Answer:

95% of confidence interval for the Population

( 6.1386 , 6.8614)

Step-by-step explanation:

Step( i ):-

Given random sample size 'n' =85

Mean of the sample size x⁻ = 6.5 years

Standard deviation of Population = 1.7 years

Level of significance = 0.95 or 0.05

Step(ii):-

95% of confidence interval for the Population is determined by

$(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })$

$(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })$

( 6.5 - 0.3614 , 6.5 + 0.3614 )

( 6.1386 , 6.8614)

Conclusion:-

95% of confidence interval for the Population

( 6.1386 , 6.8614)

8 0

4 years ago