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2 years ago

What is 6y-19=3-6y ?

Mathematics

1 answer:

Basile [38]2 years ago

5 0

Answer:

Step-by-step explanation:

6y - 19 = 3 - 6y....add 19 to both sides

6y = 3 + 19 - 6y ...add 6y yo both sides

6y + 6y = 19 + 3....combine like terms

12y = 22...divide both sides by 12

y = 22/12 which reduces to 11/6 or 1 5/6 <==

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-7x + 11 = 19 - X<br><br>solve for x

Vlad1618 [11]

Answer:

x = -4/3

Have a nice day.

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3 years ago

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Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

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3 years ago

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PLEASE HELP!

Degger [83]

Answer:

Perimeter = 21.58 units

Step-by-step explanation:

Perimeter of a polygon = Sum of measures of all sides of the polygon

Perimeter of the quadrilateral LEAP = PL + AE + EL + LP

= 4.47 + 4.47 + 6.32 + 6.32

= 21.58 units

[If the distances between two point are not given, use the formula to calculate the distance between two points $(x_1, y_1)$ and $(x_2,y_2)$

Distance = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ ]

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3 years ago

162 ⋅ 90 238·56 238 ⋅ 34 =

ollegr [7]

1572455566080 is your answer! Hope I helped! :D

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2 years ago

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Select the favorable Outcomes for rolling double sixes

ira [324]

We want double sixes. This means that we want both the first roll and the second roll to be 6.

The given point is given as (r1 , r2) where:
r1 is output from first roll
r2 is output from second roll

Since we want both outputs to be 6, therefore, the answer would be: (6,6)

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3 years ago