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3 years ago

HELP ASAP I ONLY HAVE 6 MINUTES LEFT!!

Mathematics

1 answer:

MissTica3 years ago

6 0

Step-by-step explanation:

diameter=14ft

radius=7ft

circumference=2πr

=2×3.142×7

=43.988ft

=44ft(to the nearest whole number)

Area= πr2

=3.142×7×7

=153.958ft

=154ft(nearest whole number)

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In the workplace rascial discrimination is a very serious issue. consider a company in which 20% of the employees are African-Am

Ipatiy [6.2K]

Answer:

a) How many African-Americans would you expect to get promotions?

Since we have been asked to follow the binomial distribution, (B (40,0.2)

To calculate the mean of the BPD = n*p

where n is the number of promotions and p = probability

= 40 x 0.2 = 8

You expect 8 promotions.

The probability that 5 African-Americans = P (X = 5)

P( X = 5 ) = 40 sqr root ( 5 * 0.2^5 * 0.8^35 ) = 0.0854

c) What is the probability that five or fewer African-Americans receive promotions?

P( X <= 5) = P(X=5) + P(X=4) + ... + P(X=1) + P(X=0)

faster way is calculator

binomcdf(40, .2, 5) = 0.1613

Step-by-step explanation:

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3 years ago

Please help me as soon as possible, I'll give brainliest to whoever got it done and right first. Here's the question:

marta [7]

The y-intercept is already given an the equation.
It is negative 180.

The x-intercepts or roots where y = 0, are 4, 9, and 5. You know that there are three roots because the highest degree of the function is 3.

If you have a graphing calculator, I suggest plugging in the function to see the shape of the graph.

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3 years ago

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Solve the differential equation dy dx equals the quotient of x squared and y squared for y = f(x) with the initial condition y(0

Gnoma [55]

$\displaystyle\frac{dy}{dx} = \frac{x^2}{y^2}\ \Rightarrow\ y^2 dy = x^2 dx\ \Rightarrow\ \int y^2 dy = \int x^2 dx\ \Rightarrow\textstyle\ \frac{1}{3}y^3 = \frac{1}{3}x^3 + C. \\ \\
\text{Now } y(0) = 2\ \Rightarrow\ \frac{1}{3}(2)^3 = \frac{1}{3}(0)^3 + C\ \Rightarrow\ \frac{8}{3} = C,\text{ so } \frac{1}{3}y^3 = \frac{1}{3}x^3 + \frac{8}{3}. \\ \\
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3 years ago

What is (-6)^2 • (-6)^2

e-lub [12.9K]

-6(-6) = 36 and
-6 (-6) also is 36.

36 * 36 = 1,296

8 0

3 years ago

Please help no links

Nina [5.8K]

Answer:

x=5 y=-6

Step-by-step explanation:

3x+y=9 ------eqn1

y=4-2x -------eqn2

using substitution

put y=4-2x into eqn1

3x+4-2x=9

x=5

put x=5 into eqn2

y=4-2(5)

y=4-10

y=-6

8 0

3 years ago