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3 years ago

What's the percentage of change from 20 is decreased to 11

Mathematics

1 answer:

Reil [10]3 years ago

3 0

Answer:

The percentage is 45 percent.

Step-by-step explanation:

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Factoring Polynomials (I don't know how to identify which is which)

Feliz [49]

The answer is there as well as the explanation on why it should go there. hope this helps if it does please mark brainliest

3 0

3 years ago

The time period, T, of a simple pendulum is directly proportional to the square root of the length, d, of the pendulum.

amid [387]

Step-by-step explanation:

T = k * sqrt(d), where k is a real constant.

When d = 6, T = 5.

k = T / sqrt(d) = 5 / sqrt6.

Therefore when d = 3, T = (5 / sqrt6) * sqrt3 = 3.53.

7 0

3 years ago

Is this right please hep

romanna [79]

17 meters because 5^2+12^2=17 meaning the answer must be d

4 0

3 years ago

Read 2 more answers

Please take a look at the picture

madam [21]

Answer:

B) -3/10 x -6

Step-by-step explanation:

-3/10 x -6=-3 x -6/10

When multiplying two negatives you get a positive.

Hope this helps :)

8 0

3 years ago

Read 2 more answers

In a pizza takeout restaurant, the following probability distribution was obtained for the number of toppings ordered on a large

Elis [28]

Answer:

The random variable (number of toppings ordered on a large pizza) has a mean of 1.14 and a standard deviation of 1.04.

Step-by-step explanation:

The question is incomplete:

The probability distribution is:

x P(x)

0 0.30

1 0.40

2 0.20

3 0.06

4 0.04

The mean can be calculated as:

$M=\sum p_iX_i=0.3\cdot 0+0.4\cdot 1+0.2\cdot 2+0.06\cdot 3+0.04\cdot 4\\\\M=0+0.4+0.4+0.18+0.16\\\\M=1.14$

(pi is the probability of each class, Xi is the number of topping in each class)

The standard deviation is calculated as:

$s=\sqrt{\sum p_i(X_i-M)^2}\\\\s=\sqrt{0.3(0-1.14)^2+0.4(1-1.14)^2+0.2(2-1.14)^2+0.06(3-1.14)^2+0.04(4-1.14)^2}\\\\s=\sqrt{0.3(-1.14)^2+0.4(-0.14)^2+0.2(0.86)^2+0.06(1.86)^2+0.04(2.86)^2}\\\\ s=\sqrt{0.3(1.2996)+0.4(0.0196)+0.2(0.7396)+0.06(3.4596)+0.04(8.1796)}\\\\s=\sqrt{0.3899+0.0078+0.1479+0.2076+0.3272}\\\\ s=\sqrt{ 1.0804 }\\\\s\approx 1.04$

3 0

3 years ago

What's the percentage of change from 20 is decreased to 11​

What's the percentage of change from 20 is decreased to 11