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VLD [36.1K]
3 years ago
8

What ratio is not equivalent to 5:8

Mathematics
1 answer:
tia_tia [17]3 years ago
8 0

6 is to 7 is not equal to 5 is to 8

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Write an equation that represents a vertical stretch by a factor of 3 and a reflection in the x-axis of the graph of g(x)=|x|.
Dmitry [639]

Answer:

(x,y) ---> (3x,3y) 3 units reflected on the x-axis

3 0
3 years ago
On a fair 6-sided die each number has an equal probability p of being rolled. When a fair die is rolled n times, the most likely
Feliz [49]
A 1.5 standard deviation above the mean is
np + 1.5 <span>√(np(1-p))

We are given with
np = 200
p = 200/n
The standard deviation is
</span><span>√200(1-200/n))

Substituting
200 + 1.5 </span>√200(1-200/n))
By inspection, if the value of n is 200, then the radical will result to the value of 1. Only by increasing the value of n greater than 200 will the radical result to a value of less than 1 and decreasing the spread of the mean.
The answer is
the minimum is 201
the maximum is infinity
3 0
3 years ago
There are 10 employees in a particular division of a company. Their salaries have a mean of $70,000, a median of $55,000, and a
Sindrei [870]

Solution:

a. original \bar{x} =70,000 =\frac{\sum x}{n}

\therefore \sum x = 70,000 \times 10 =700,000

modified \sum x = 700,000 - 100,000 + 1,000,000 = 1,600,000

modified \bar{x} = \frac{1,600,000}{10} =160,000

b. Median remains the same.

c. original s^{2}=(20,000)^{2}=400000000=\frac{1}{n-1}[\sum x^{2}- n\bar{x}^{2}]

\therefore orig. \sum x^{2} = (10-1)(20000)^{2} + 10(70000)^{2}

                                                  =52600000000

mod. \sum x^{2} = 52600000000-100000^{2} +1000000^{2}

                                  =1.0426E+12

mod.s^{2} = \frac{1}{n-1} [\sum x^{2} - n\bar{x}^{2}]

                       =\frac{1}{9} [1.0426E+12 - 10 \times 160000^{2}]

                       =87400000000

modified s= \sqrt{s^{2}} =\sqrt{87400000000} =295634.91            


8 0
3 years ago
A door has an area of 21 square feet. It is 7 feet tall. How wide is the door?
Sati [7]

Answer:

3 feet wide

Step-by-step explanation:

21/7= 3

8 0
4 years ago
State the equation of the line of reflection. ANSWER ASAP PLEASE
ahrayia [7]

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6 0
3 years ago
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