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2 years ago

Can someone help me answer this

Mathematics

2 answers:

marishachu [46]2 years ago

8 0

Ok done. Thank to me :>

slamgirl [31]2 years ago

5 0

$32^{-\tfrac 25}\\\\=(2^5)^{-\tfrac 25}\\\\=2^{-2}\\\\=\dfrac 1{2^2}\\\\=\dfrac 14$

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To the nearest thousand what was E (X) expected number of bases for Alex Rodriguez in a typical at bat in 2007

emmainna [20.7K]

Given the following table that arranges the data of Alex Rodriguez hits in his 2007 MVP season for the New York Yankees, in terms of the number of bases for a hit, counting 0 bases for the times when he did not get a hit and 4 bases for home runs.

Number of Bases (x): 0 1 2 3 4
Number of Times f(x): 400 98 31 0 54

Recall that the expected value of an event is given by the sum of the products of x and f(x).

Thus, E(x) = ∑xf(x) = 0(400) + 1(98) + 2(31) + 3(0) + 4(54) = 98 + 62 + 216 = 376.

Given that he made a total of 583 at bats, E(x) can be expressed as 376 / 583 = 0.645 to the nearest thousandth.

Therefore, E(X), the expected number of bases for Alex Rodriguez in a typical at bat in 2007 is 0.645

6 0

3 years ago

Find the amount of money in savings account if $3200 was deposited for 3 years at 40% interest compounded annually. Find the int

a_sh-v [17]

Step-by-step explanation:

Formula for compound interest is given by

$A = P(1 + R) ^{n}$

Where

A is the amount at the end of the period

P is the principal

R is the rate

n is the period

The interest = A - P

From the question

P = $ 3200

n = 3 years

R = 40%

So we have

$A = 3200 \times 2.744$

A = $ 8780.80

<h3>The amount is $ 8780.80</h3>

The interest is

$ 8780.80 - $3200

Hope this helps you

7 0

2 years ago

A triangle's base is increasing at the rate of 3 inches/sec, its height at 2 inches/sec. At what rate is the area of the rectang

Triss [41]

Answer:

dA/dt = 31 in²/ sec

Step-by-step explanation:

The area of the triangle is:

A(t) = (1/2)*b*h where b is the base and h the height

Differentiation on both sides of the equation we obtain

dA/dt = (1/2)* db/dt * h + (1/2)* dh/dt * b (1)

db/dt = 3 in/sec

dh/dt = 2 n/sec

b = 10 in

h = 14 in

By substitution in (1)

dA/dt = 0,5* 3*14 + 0,5* 2*10

dA/dt = 21 in² /sec + 10 in²/sc

dA/dt = 31 in²/ sec

3 0

2 years ago

To prove the statement “If the dog does a trick, then the dog will get a treat” by proving its contrapositive, what statement sh

katen-ka-za [31]

Answer:C

Step-by-step explanation:

Contrapositive

6 0

1 year ago

HEy, CAn YOu HElp ? :) Plssss (picture below) solve for #5

alexira [117]

Answer: a=60°, b=25°, c=95°,d=60°, e=25°, f=95°, g=60, h=35°

Step-by-step explanation:

a=60°, Because the angle opposite to it is 60°

b=25°, Because if you take 180°-155°, you get 25°

c=95°, Because if you add angles a and b, you get 85°, then you do 180°-85°=95°

d=60°, Because the angle opposite to it does

f=95°, Because angle c, which is opposite to it equals 95°

g=60°, Because if you add angles e and f, you get 85°, then you take 180°-85=95°

h=35°, Because if you add angles c and d, which is 155°, you take 180°-155=35°

4 0

3 years ago

Can someone help me answer this​

Can someone help me answer this