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____ [38]
2 years ago
15

Solve (65/4)-3^2 asap plssss

Mathematics
2 answers:
earnstyle [38]2 years ago
6 0

Answer: 29/4

Step-by-step explanation:

brilliants [131]2 years ago
4 0

Hey there!

(65/4) - 3^2

= 65/4 - 3^2

= 65/4 - 3 * 3

= 65/4 - 9

= 29/4

Therefore, your answer is: 29/4

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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alekssr [168]

Answer: the anwser is A

Step-by-step explanation:

I used a calculator lol

6 0
3 years ago
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Marcy is making a hooked circle shaped rug for her mother. The circumference of the circle shaped rug is 56.52 inches. What is t
maria [59]
A = C²/(4π)
A = (56.52 in)²/(4π) ≈ 254.2 in² . . . . the area of the rug
4 0
3 years ago
A particular sale involves four items randomly selected from a large lot that is known to contain 9% defectives. Let X denote th
umka2103 [35]

Answer:

The expected repair cost is $3.73.

Step-by-step explanation:

The random variable <em>X</em> is defined as the number of defectives among the 4 items sold.

The probability of a large lot of items containing defectives is, <em>p</em> = 0.09.

An item is defective irrespective of the others.

The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 9 and <em>p</em> = 0.09.

The repair cost of the item is given by:

C=3X^{2}+X+2

Compute the expected cost of repair as follows:

E(C)=E(3X^{2}+X+2)

        =3E(X^{2})+E(X)+2

Compute the expected value of <em>X</em> as follows:

E(X)=np

         =4\times 0.09\\=0.36

The expected value of <em>X</em> is 0.36.

Compute the variance of <em>X</em> as follows:

V(X)=np(1-p)

         =4\times 0.09\times 0.91\\=0.3276\\

The variance of <em>X</em> is 0.3276.

The variance can also be computed using the formula:

V(X)=E(Y^{2})-(E(Y))^{2}

Then the formula of E(Y^{2}) is:

E(Y^{2})=V(X)+(E(Y))^{2}

Compute the value of E(Y^{2}) as follows:

E(Y^{2})=V(X)+(E(Y))^{2}

          =0.3276+(0.36)^{2}\\=0.4572

The expected repair cost is:

E(C)=3E(X^{2})+E(X)+2

         =(3\times 0.4572)+0.36+2\\=3.7316\\\approx 3.73

Thus, the expected repair cost is $3.73.

4 0
3 years ago
a scientist began a study with a simple of 1,500 bacteria . he noticed that the number of bacteria in the simple after t days ca
Aneli [31]

Answer:

the variable

Step-by-step explanation:

7 0
3 years ago
In t hours the train has traveled s miles. Find the formula for v, the speed of the train (in mph) in terms of t and s. Find the
Digiron [165]

Answer:

Part 1 .

As per the given statement: In t hours the train has traveled s miles.

Distance of the train = s mile

Time = t hours

Formula for :

Speed of the train(v) = \frac{\text{Distance of the train}}{\text{Time}}

or

v = \frac{s}{t} mph           .....[1]

Substitute the value of t = 3 hours and s = 180 miles in [1], to solve for v;

v = \frac{180}{3} = 60 mph

Therefore, the speed of the train(v) is, 60 mph

Part 2.

Similarly,

The formula for speed of the train (v) is given by;

v =\frac{s}{t}

Substitute the value of t = 2.5 hours and s = 225 miles to solve for v;

v = \frac{225}{2.5} = 90 mph

Therefore, the speed of the train(v) is, 90 mph


7 0
3 years ago
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