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mihalych1998 [28]
3 years ago
9

Lines p and q are intersecting by line r. If m<1=7x-36 and m<2=5x+12, for which value of x would p||q

Mathematics
1 answer:
inessss [21]3 years ago
8 0
The correct answer is B.24
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Show that 0.357 is a rational number.
nika2105 [10]

Answer:

0.357 = (357)/(1000).

Step-by-step explanation:

A number is a rational number if and only if it is equal to the ratio between two integers. In other words, a number x is a rational number if and only if there are integers (whole numbers) p and q (q \ne 0) such that x = p / q.

Thus, the 0.357 in this question would be a rational number as long as there are integers p and q (q \ne 0) such that p / q = 0.357. Simply finding the right p\! and q\1 would be sufficient for showing that 0.357\! is rational.

Since 0.357 is a terminating decimal, one possible way to find p\! and q\1 is to repeatedly multiply 0.357\! by 10 until a whole number is reached:

10 \times 0.357 = 3.57.

10^{2} \times 0.357 = 35.7.

10^{3} \times 0.357 = 357.

Thus, 0.357 = (357) / (10^{3}), such that p = 357 and q = 1000 (both are integers, and q \ne 0) would ensure that 0.357 = p / q.

Therefore, 0.357 is indeed a rational number.

4 0
2 years ago
A square garden plot has an area of 24 ft2.
strojnjashka [21]
The area of a square is equal to the side squared.
s^2=A

We can plug in 24 for A and then take the square root of each side to find s.
s^2=24 \\ s=\sqrt{24}

We can simplify √24.
The prime factorization of 24 is 2×2×2×3.
Since we have 2×2 inside the radical we can simplify to have 2 outside the radical.
\sqrt{24}=\sqrt{4\times6}=\boxed{2\sqrt{6}\ ft}

We can then use a calculator to find an approximate decimal value for 2√6.
(You could technically calculate it by hand using the Babylonian method, I don't think you're expected to do that, though)
2\sqrt{6}\approx\boxed{4.9\ ft}


6 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5CLarge%5Cmathtt%5Ccolor%7Bred%7D%7BH%7D%5Ccolor%7Borange%7D%7BE%7D%5Ccolor%7Byellow%7D%7BL%7
Illusion [34]

Answer:

0.018

kamsahamnida

have a great day ahead

5 0
2 years ago
Read 2 more answers
The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.0 inches and a standard devi
alexira [117]

Answer: 0.8490

Step-by-step explanation:

Given :  The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.0 inches and a standard deviation of 0.9 inches.

i.e. \mu=30 and \sigma=0.9

Let x denotes the lengths of aluminum-coated steel sheets.

Required Formula : z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For n= 36 , the probability that the average length of a sheet is between 29.82 and 30.27 inches long will be :-

P(29.82

∴ Required probability = 0.8490

3 0
3 years ago
A spherical exercise ball has a maximum diameter of 30 inches when filled with air. The ball was completely empty at the start,
Alex73 [517]

Answer:

A) A(t)  =  4500*π  -  1600*t

B) A(4)  =  7730 in³

C) t  =  8,8 sec

Step-by-step explanation:

The volume of the sphere is:

d max  =  30   r max  =  15 in

V(s) =  (4/3)*π*r³      V(s)  =   (4/3)*π* (15)³

V(s) = 4500*π

A)  Amount of air needed to fill the ball A(t)

A(t)  = Total max. volume of the sphere - rate of flux of air * time

A(t)  =  4500*π  -  1600*t    in³

B) After 4 minutes

A(4)  =  4500*π  - 6400

A(4)  =  14130 - 6400

A(4)  =  7730 in³

C)  A(t)  =  4500*π  -  1600*t  

when  A(t) = 0   the ball got its maximum volume then:

4500*π -  1600*t  =  0

t  =   14130/1600

t  =  8,8 sec

8 0
2 years ago
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