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3 years ago

Which shower uses the least amount of water?

Mathematics

1 answer:

Norma-Jean [14]3 years ago

8 0

Answer:

one of the lower rates i think i didnt get enough information

Step-by-step explanation:

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Please help. What is the circumference of the circle? <br><br> (X+4)^2+(y-5)^2=81

PIT_PIT [208]

the radius: r^2 = 81

r =9

c = 2*pi*r

= 2 * pi * 9

= 18 *pi

Answer: 18*pi or approximately 56.62

8 0

3 years ago

Read 2 more answers

Can someone help me with number 10, 11, 12, 15, and 16 I don’t understand them thanks

yanalaym [24]

10)

$10^2-48:6+25*3=100-8+75=167$

11)

$8(\frac{16}{4} )+2^2-11*3=32+4-33=3$

12)

$(\frac{6}{3} +4)^2:4*7=(2+4)^2:4*7=6^2:4*7=36:4*7=9*7=63$

13) (your answer is incorrect)

$5(9-4)^2-3^2=5*5^2-3^2=5*25-9=125-9=116$

14) (your answer is incorrect)

$5^2-2^2*4^2-12=25-4*16-12=25-64-12=-51$

15)

$(\frac{50}{5^2} )^2:4=(\frac{50}{25} )^2:4=2^2:4=4:4=1$

16)

$\frac{24+32+30+28}{2}$ -expression to represent this situation

$\frac{24+32+30+28}{2}=\frac{114}{2}=57$

Answer: In 1 group 57 students

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P.S. Hello from Russia :^)

4 0

3 years ago

3. From the table below, find Prof. Xin expected value of lateness. (5 points) Lateness P(Lateness) On Time 4/5 1 Hour Late 1/10

wariber [46]

Answer:

The expected value of lateness $\frac{7}{20}$ hours.

Step-by-step explanation:

The probability distribution of lateness is as follows:

Lateness P (Lateness)

On Time 4/5

1 Hour Late 1/10

2 Hours Late 1/20

3 Hours Late 1/20

The formula of expected value of a random variable is:

$E(X)=\sum x\cdot P(X=x)$

Compute the expected value of lateness as follows:

$E(X)=\sum x\cdot P(X=x)$

$=(0\times \frac{4}{5})+(1\times \frac{1}{10})+(2\times \frac{1}{20})+(3\times \frac{1}{20})\\\\=0+\frac{1}{10}+\frac{1}{10}+\frac{3}{20}\\\\=\frac{2+2+3}{20}\\\\=\frac{7}{20}$

Thus, the expected value of lateness $\frac{7}{20}$ hours.

8 0

3 years ago

(HELP PLEASE) It costs $68 for 16 square feet of flooding. How much does it cost for 12 square feet of flooring?

FromTheMoon [43]

Answer:

12 feet of flooring cost $51

Step-by-step explanation:

68/16 = 4.25

4.25 x 12 = 51

8 0

3 years ago

Read 2 more answers

If f(x) = -5X - 4 and g(x) = -3x - 2, find (f + g)(x).

dmitriy555 [2]

Answer:

(f+g) (x)= -5x-4= (-3x-2)

or, -5x + 3x= -4+2

or, -2x= -2

or,x= 2/2

:. x= 1

Step-by-step explanation:

first we have to make same alphabet and put together if there is subtract if it come in front we should make add and we can get the value of x

5 0

3 years ago