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3 years ago

Find the equation of the line passing through the points (7,20) and (-2,11)

Mathematics

2 answers:

Citrus2011 [14]3 years ago

5 0

Answer:

Step-by-step explanation:

Given points ( 7 , 20) and ( -2 ,11)

First calculating slope

Slope (m)

= ( y2 - y1)/ (x2 - x1)

= ( 20 - 11) / ( 7 + 2)

= 9/9

= 1

Now the equation of line is given by

y - y1 = m( x - x1)

y - 11 = 1( x + 2)

y - 11 = x + 2

x - y = - 11 - 2

x - y = - 13

x - y + 13 = 0

Hope it will help :)

Bad White [126]3 years ago

3 0

Answer:

Step-by-step explanation:

y-20=(11-20)/(-2-7)(x-7)

y-20=-9/-9 (x-7)

y-20=x-7

y=x-7+20

or y=x+13

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Use set builder notation to represent the following set. {... -3, -2, -1, 0} {x | x Z, x ≤ 0} {x | x N, x ≤ 0} {x | x R, x ≤ 0}

IceJOKER [234]

Answer:

$\boxed{\boxed{\left\{x\ |\ x\ \epsilon\ Z,\ x \le 0}\right\}}}$

Step-by-step explanation:

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It is a notation for representing a set by enumerating its elements and stating the properties that its members must satisfy.

The given set is,

$\left \{.... -3, -2, -1, 0 \right \}$

This set is comprised of all negative integers. So symbol Z should be used in this case.

The set builder notation for this set is,

$\left\{x\ |\ x\ \epsilon\ Z,\ x \le 0}\right\}$

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3 years ago

Bill's recipe for onion soup call for 4.0lb of thinly sliced onions. If an onion has an average mass of 115g, how many onions do

musickatia [10]

Answer:

1. $16\ onions$

2. $4,040.91\ kg$

Step-by-step explanation:

1. You know that the average mass of an onion is 115 grams and Bill needs 4.0 pounds.

Then, since $1\ lb=453.592\ g$ , we can make the following conversion:

$(4.0\ lb)(\frac{453.592\ g}{1\ lb})=1,814.37\ g$

Then, the number of onions Bill needs is:

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2. Since $1\ kg=2.20462\ lb$ , we can make the following conversion:

$(11\ lb)(\frac{1\ kg}{2.20462\ lb})=4.98\ kg$

Knowing that all the potatoes sold today at the store bring in $1,420 and 4.98 kilograms of potatoes is $1.75, we can calculate the amount of kilograms the grocery shoppers bought:

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3 years ago

How to factor a tri, quad, or polynomial.

Akimi4 [234]

Explanation:

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In general, it is a difficult problem to find irrational real factors, and even more difficult to find complex factors. The methods for finding complex factors are not generally taught in beginning Algebra courses, but may be taught in some numerical analysis courses.

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_____

<em>Additional comment</em>

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2 years ago

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kodGreya [7K]

Answer:

Arc length of the partial circle = 3π units

Step-by-step explanation:

Given question is incomplete; please find the complete question attached.

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