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Alina [70]
3 years ago
8

5(2x-1)/3 -4 =11 what does x =

Mathematics
1 answer:
lesya [120]3 years ago
3 0

Solve for x by simplifying both sides of the equation, then isolating the variable.

x = 5

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Incomes in a certain town are strongly right-skewed with mean $36,000 and standard deviation $7000. a random sample of 75 househ
Svet_ta [14]
Since the sample is greater than 10, we can approximate this binomial problem with a normal distribution.

First, calculate the z-score:

z = (x - μ) / σ = (37000 - 36000) / 7000 = 0.143

The probability P(x > 37000$) = 1 - P(<span>x < 37000$), 
therefore we need to look up at a normal distribution table in order to find 
P(z < 0.143) = 0.55567 
And 
</span>P(x > 37000$) = 1 - <span>0.55567 = 0.44433

Hence, there is a 44.4% probability that </span><span>the sample mean is greater than $37,000.</span>

4 0
4 years ago
Amanda was given three numbers: 8,
Firdavs [7]

Answer:

Yeah, She can.

Step-by-step explanation:

Simply using 8/5

5 0
3 years ago
How can I measure a 173 and a 68 degrees Angle in a circle.
kifflom [539]
Using a Protractor..
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see image below

6 0
4 years ago
A van starts off 191 miles directly north from the city of Morristown. It travels due east at a speed of 25 miles per hour. Afte
coldgirl [10]

Answer:

Distance between the van and Morristown is changing at the rate of 13.22 miles per hour.

Step-by-step explanation:

From the figure attached,

Van starts from C (City of Morristown), reaches the point A 191 miles due North and then it travels with a speed of 25 miles per hour due East from A towards B.

We have to calculate the rate of change of distance BC, when the van reaches point B which is 119 miles away from A.

By Pythagoras theorem in the triangle ABC,

BC^{2}=AB^{2}+AC^{2}

Distance AC is constant equal to 191 mi.

By differentiating the equation with respect to time 't'

2BC.\frac{d(BC)}{dt}=0+2AB.\frac{d(AB)}{dt}

BC.\frac{d(BC)}{dt}=AB.\frac{d(AB)}{dt}

Since BC² = (119)²+ (191)²

BC = √50642 = 225.04 miles

From the differential equation,

(225.03).\frac{d(BC)}{dt}=119\times 25 [Since \frac{d(AB)}{dt}=25 miles per hour]

\frac{d(BC)}{dt}=13.22 miles per hour

Therefore, distance between the van and Morristown is changing at the rate of 13.22 miles per hour.

4 0
4 years ago
Find the circumference of the circle (use 3.14 for pi). Round to the nearest tenth.
stich3 [128]

Answer:

37.7

Step-by-step explanation:

The formula is C = 2 • 3.14 • r , you multiply the radius by pi/3.14, then you multiply that by product by 2.

5 0
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