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3 years ago

1 * 8 + 8 - 8 + 2 - 3 + 4

Mathematics

1 answer:

saveliy_v [14]3 years ago

3 0

Answer: 11

Step-by-step explanation:

OK first your gonna do 1*8 which is 8 and then 8+8 which is 16 - 8 which is 8 then + 2 which is 10 then -3 which is 7 then after that + 4 which is 11

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Step-by-step explanation:

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6. AB has coordinates A(-5,9) and B(7,-7). Points P, Q, and T are collinear

MrRissso [65]

Answer:

C) QT

Step-by-step explanation:

We must first find the coordinates of C(x,y) which divides AB in the ration m:n=3:2.

We use the formula

$x=\frac{mx_2+nx_1}{m+n}$

and

$y=\frac{my_2+ny_1}{m+n}$

We plug in the coordinates of A(-5,9) and B(7,-7) and m=3, n=2 to get:

$x=\frac{3*7+2*-5}{3+2}$

$x=\frac{21-10}{5}$

$x=\frac{11}{5}$

and

$y=\frac{3*-7+2*9}{3+2}$

$y=\frac{-21+18}{5}$

$y=-\frac{3}{5}$

C has coordinates $(\frac{11}{5},-\frac{3}{5})$

The line segment that contains C is $QT$

See attachment.

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3 years ago