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2 years ago

4 16 out of 25 is equal to what percent?

Mathematics

1 answer:

alukav5142 [94]2 years ago

8 0

Answer:

64%

Step-by-step explanation:

16 divided by 25 is 0.64 then multiply by 100 to convert a decimal to a percentage which equals 64%.

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Can somebody please give me a step by step explanation. I have the answer I just don’t know how to show work!!!!!!! Please!!!

krek1111 [17]

Answer:

5391.76

Step-by-step explanation:

We have a rectangle and 2 semicircles

First find the area of the rectangle

A = l*w

A = 44*88= 3872

Then we know that 2 semicircles = 1 circle

The area of a circle is

A = pi r^2

The diameter is 44 so the radius is 22

A = pi * 22^2

A = pi484

A =1519.76

Add the areas together

1519.76+3872

5391.76

7 0

3 years ago

The midpoint of (-4,15) and (22,3)

ahrayia [7]

Answer:

(9, 9)

Step-by-step explanation:

midpoint of (-4,15) and (22,3)

$= \bigg( \frac{ - 4 + 22}{2}, \: \: \frac{15 + 3}{2} \bigg) \\ \\ = \bigg( \frac{18}{2}, \: \: \frac{18}{2} \bigg) \\ \\ = ( 9, \: \: 9) \\ \\$

8 0

3 years ago

Which number is NOT written in scientific notation? 8.7 × 10–5 3 × 10–8 25.67 × 10–2 6.7 × 103

alexandr1967 [171]

Answer:

26.67X10^-2 would be incorrect since the decimal is in the wrong place.

Step-by-step explanation:

6 0

3 years ago

Given y=5x−3 with the domain D: {−2, −1, 0, 1, 2}, fill in the missing values of the table below.

spayn [35]

Answer:

see below

Step-by-step explanation:

y = 5x-3

Let x = -2 y = 5(-2) -3 = -10 -3= -13

Let x = -1 y = 5(-1) -3 = -5-3 = -8

Let x = 0 y = 5(0) -3 = 0-3 = -3

Let x = 1 y = 5(1) -3 = 5-3 = 2

Let x = 2 y = 5(2) -3 =10-3 = 7

7 0

2 years ago

(Uniform) Suppose X follows a continuous uniform distribution from 4 to 11. (a) Write down the PDF of X. (b) Find P(X ≤ 7). Roun

love history [14]

Answer:

a) $f(x)= \frac{1}{11-4}= \frac{1}{7}, 4 \leq x \leq 11$

b) $P(X\leq 7) = F(7) = \frac{7-4}{11-4}= 0.4286$

c) $P(5 < X \leq 7)= F(7) -F(5) = \frac{7-4}{7} -\frac{5-4}{7}= 0.2857$

d) $P(X >5 | X \leq 7)$

And we can find this probability with this formula from the Bayes theorem:

$P(X >5 | X \leq 7)= \frac{P(X>5 \cap X \leq 7)}{P(X \leq 7)}= \frac{P(5$

Step-by-step explanation:

For this case we assume that the random variable X follows this distribution:

$X \sim Unif (a=4, b =11)$

Part a

The probability density function is given by the following expression:

$f(x) = \frac{1}{b-a} , a \leq x \leq b$

$f(x)= \frac{1}{11-4}= \frac{1}{7}, 4 \leq x \leq 11$

Part b

We want this probability:

$P(X \leq 7)$

And we can use the cumulative distribution function given by:

$F(x) = \frac{x-a}{b-a}= \frac{x-4}{11-4}$

And replacing we got:

$P(X\leq 7) = F(7) = \frac{7-4}{11-4}= 0.4286$

Part c

We want this probability:

$P(5 < X \leq 7)$

And we can use the CDF again and we have:

$P(5 < X \leq 7)= F(7) -F(5) = \frac{7-4}{7} -\frac{5-4}{7}= 0.2857$

Part d

We want this conditional probabilty:

$P(X >5 | X \leq 7)$

And we can find this probability with this formula from the Bayes theorem:

$P(X >5 | X \leq 7)= \frac{P(X>5 \cap X \leq 7)}{P(X \leq 7)}= \frac{P(5$

7 0

3 years ago