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Nadusha1986 [10]
3 years ago
12

Find the value b-7 when b=20

Mathematics
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer:

13

Step-by-step explanation:

20-7 hope this helps :)

allsm [11]3 years ago
4 0

Replace b in the equation with 20 and solve.

B-7 = 20-7 = 13

The answer is 13

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Explain why the measure was selected to report on the data set. The mean price of homes sold in the area is $197,000. Home Price
aniked [119]

Answer:

Only one says the mean s higher than the median, so choose that one.  

Step-by-step explanation:

Putting them in order gets yout he following list

$99,000

$106,000

$122,000

$124,000

$130,000

$131,000

$114,000

$497,000

$450,000

The average changes if you increase or decrease any of the prices, thought he median does not unless you mess witht he middle value 130,000.  Since it mentions the outliers lets look at those.  The outliers are the last two because they are more than 3 times the next highest.  So, increasing or decreasing these will effet the average in the same way.  Also, keep in mind what the median is, and if the verage as is is higher or lower than it., that pretty much answers your question.

7 0
3 years ago
What is the value in cents of 2 quarters 3 dimes and 4 nickles
Nuetrik [128]

Answer: 2 quarters = 50 cents, 3 dimes = 30 cents, 4 nickels =20 cents. 50+30+20=100 cents.


Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
In two or three sentences explain how you would solve for the real solutions of the following equation: please help asap!!
g100num [7]

the real solutions for the equation x^{3}=-64 are -

x=4,2+-2\sqrt{3i}

Step-by-step explanation:

   x^{3} = - 64

   x^{3} +64  = 0

   We can write 64 as  4^{3}

  x^{3} + 4^{3} = 0

  using the identity  ( x^{3}+y^{3} = (x+y)(x^{2} -xy+y^{2} ) )

we get,

  = (x+4) (x^{2} -x*4+4^{2} )

  = (x+4)(x^{2} -4x+16)    ....................(1)

 solving the quadratic equation  ,

   x^{2} -4x+16 =0

solutions of this quadratic equation can be obtained by

   x=-b +- \sqrt{b^{2}-4ac } /2a

let use y for factors

x=-(-4x)+-\sqrt{(-4x^{2} )-4*x^{2} *16}  / 2*x^{2}

x=4x+-\sqrt{16x^{2} -64x^{2} } /2x^{2}

x=4+-\sqrt{16-64}/2

x=4+-4\sqrt{3i} /2

<u />x=2+-2\sqrt{3i}    ..................(2)

from the equation 1 we have,

x-4=0

which gives solution x=4

and from equation 2 we got  x=2+-2\sqrt{3i}

so the real solutions for the equation x^{3}=-64 are -

x=4,2+-2\sqrt{3i}

3 0
3 years ago
Help on Math please and thank you
Keith_Richards [23]

Answer:

the value of x to the nearest tenth is 12 * x

5 0
3 years ago
Sienna, Rhys, and Micah are all reading the same book for school. Sienna has read 40% as far as Rhys has, and Rhys has read 40%
ruslelena [56]

Based on the fact that Sienna has read 60 pages, we can infer that Micha has read 375 pages of the book.

Sienna has read 40% of what Rhys has read and that corresponds to 60 pages. The number of pages read by Rhys is therefore:

<em>= Number of pages / Percentage read </em>

= 60 / 40%

= 150 pages

The 150 pages read by Rhys is 40% of what Micah has read. Micah has therefore read:

= 150 / 40%

= 375 pages

In conclusion, Micah has read 375 pages.

<em>Find out more at brainly.com/question/2807698.</em>

4 0
3 years ago
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