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3 years ago

6

(please help)!!!!!!!!!!!!!!

1 answer:

anzhelika [568]3 years ago

8 0

Answer

use trigonometry to find both the answers.

i have done the working out in the picture hope it helps...

Step-by-step explanation:

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Point B is collinear with A and C and partitions AC in a 3:4 ratio. B is located at (4,1) and C is located at (12,5). Find the c

GrogVix [38]

Answer:

$A(-\frac{20}{3} ,-\frac{13}{3})$

Step-by-step explanation:

Point B partitions AC in a 3:4 ratio.

B is located at (4,1) and C is located at (12,5).

Let $(x_1,y_1)$ be the coordinates of A.

Then $(\frac{mx_1+nx_2}{m+n}, \frac{my_1+ny_2}{m+n})=(4,1)$

But m:n=3:4 implies m=3 and n=4 and $(x_2=12,y_2=5)$

$(\frac{3x_1+4*12}{3+4}, \frac{3y_1+4*5}{3+4})=(4,1)$

$(\frac{3x_1+48}{7}, \frac{3y_1+20}{7})=(4,1)$

$\frac{3x_1+48}{7}=4, \frac{3y_1+20}{7}=1$

$3x_1+48=28, 3y_1+20=7$

$3x_1=-20, 3y_1=-13$

$x_1=-\frac{20}{3} , y_1=-\frac{13}{3}$

8 0

3 years ago

I need help please help i need a very smart. student to help me

Brut [27]

2) c
3) d
4) a
5) d
6) c
7) a
8) b

6 0

3 years ago

What is the value of the expression when p = –24 and q = 4?<br><br><br><br><br> p/2q

Tomtit [17]

<span>when p = -24 and q = 4. p/2q= -24/8 = -3 </span>

6 0

4 years ago

The table below shows the illuminated percentage of the moon on a lunar cycle of 28 days. The relationship can be described usin

natulia [17]

Answer:

The amplitude of the function is 48

The period of the function is 28

The graph has a vertical shift of 48 units.

Step-by-step explanation:

just took the quiz

7 0

4 years ago

the remains of an ancient ball court include a rectangular playing alley with a perimeter of about 48 M. the length of the alley

Firdavs [7]

Answer:

Length is 20 m and width is 4 m.

Step-by-step explanation:

Given:

Perimeter of the rectangular alley, $P=48\textrm{ m}$

Length is 5 times the width.

Let width be $x$ .

So, as per question,

Length, $l = 5x$

Now, perimeter of rectangle is given as:

$P=2(l+b)$

Plug in 48 for $P$ , $5x$ for $l$ and $x$ for b.

$48=2(5x+x)\\48=2(6x)\\48=12x\\x=\frac{48}{12}=4$

Therefore, width is 4 m.

Length is $5x=5\times 4=20$ m.

8 0

4 years ago