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marysya [2.9K]
2 years ago
11

Samantha runs 3 miles every 2 days. How many days would it take her to run 24 miles

Mathematics
2 answers:
Bond [772]2 years ago
6 0

Answer:

16 days

Step-by-step explanation:

\frac{3}{2} to represent the relationship from miles to days

\frac{3}{2}=\frac{24}{x}

3 x 8 = 24

so do the same thing to 2

2 x 8 = 16 days

Olenka [21]2 years ago
3 0

Answer:

16

Step-by-step explanation:

3 miles = 2 days

24 miles = ? days

24 / 3 = 8

8 x 2 = 16

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Write a translation rule that maps point D(7, −3) onto point D'(2, 5).
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Answer:

The translation rule is described by D'(x,y) =(x-5,y+8).

Step-by-step explanation:

According to Linear Algebra, a translation consists in sum a given vector (original point in this case) with another vector (translation vector). We can define translation as follows:

D'(x,y) = D(x,y) +U(x,y) (Eq. 1)

Where:

D(x,y) - Original vector with respect to origin, dimensionless.

D'(x,y) - Translated vector with respect to origin, dimensionless.

U(x,y) - Translation vector with respect to original vector, dimensionless.

From (Eq. 1) we get that translation vector is:

U(x,y) = D'(x,y)-D(x,y)

If we know that D(x,y) = (7,-3) and D'(x,y) =(2,5), then the translation vector is:

U(x,y) = (2,5)-(7,-3)

U(x,y) = (-5,8)

And we find the translation rule by assuming that D(x,y) = (x,y) and U(x,y) = (-5,8) in (Eq. 1):

D'(x,y) = (x,y)+(-5,8)

D'(x,y) =(x-5,y+8)

The translation rule is described by D'(x,y) =(x-5,y+8).

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