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ivolga24 [154]
3 years ago
14

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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Rita bought 6 boxes of chocolates. Each box cost $6.48. How much did she spend?
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Answer:

38.88

Step-by-step explanation:

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

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3 years ago
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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.

6 0
3 years ago
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