3 years ago

Explain how place value could be used to find the difference between 4.23 into 2.75

Mathematics

1 answer:

Tomtit [17]3 years ago

5 0

Because without place value you might put the decimal in the wrong place and that will effect the answer big time.

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38.88

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Take the price per box and multiply by the number of boxes

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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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