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White raven [17]
3 years ago
7

Giving 15 points plz plz help me

Mathematics
1 answer:
jek_recluse [69]3 years ago
5 0
30 dollars equals the slope and 100 dollars equal y intercept
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Write an equation of a line going through (5,7) and (4 , -4)
Ostrovityanka [42]

Answer:

The equation of this line would be y = 11x - 48

Step-by-step explanation:

To get this equation, we first have to find the slope. We do that with the slope eqaution.

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

m = (-4 - 7)/(4 - 5)

m = -11/-1

m = 11

Now we can use this slope and either point in point-slope form to find the equation.

y - y1 = m(x - x1)

y - 7 = 11(x - 5)

y - 7 = 11x - 55

y = 11x - 48

6 0
3 years ago
Question 8 Find the unit vector in the direction of (2,-3). Write your answer in component form. Do not approximate any numbers
slamgirl [31]

Answer:

The unit vector in component form is \hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}}  \right) or \hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j.

Step-by-step explanation:

Let be \vec u = (2,-3), its unit vector is determined by following expression:

\hat {u} = \frac{\vec u}{\|\vec u \|}

Where \|\vec u \| is the norm of \vec u, which is found by Pythagorean Theorem:

\|\vec u\|=\sqrt{2^{2}+(-3)^{2}}

\|\vec u\| = \sqrt{13}

Then, the unit vector is:

\hat{u} = \frac{1}{\sqrt{13}} \cdot (2,-3)

\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}}  \right)

The unit vector in component form is \hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}}  \right) or \hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j.

6 0
2 years ago
Zeina has seven times as many books as ali if zeina gave ali 15 books they would eash have the same number of books how many boo
ELEN [110]

Step-by-step explanation:

20 each because it's like tgat

5 0
3 years ago
2(3x-5)<4x+6 as a word problem
Nastasia [14]

Answer: x<8

Step-by-step explanation:

3 0
3 years ago
A department store purchases screen printed t shirts at a cost of $5 per shirt. Them he store marks up the price 150% and puts t
zepelin [54]

Answer:

$9

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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