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3 years ago

Debbie runs 4 miles during each track practice. How many track practices would it take for Debbie to run 8 miles?

Mathematics

1 answer:

forsale [732]3 years ago

7 0

Answer:

two

Step-by-step explanation:

4×2 because she runs 4 each day

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Find the coordinates of the point 7/10 of the way from A to B. a=(-3,-6) b=(12,4)

Artemon [7]

Answer:

The coordinates of $M$ are $x = \frac{15}{2}$ and $y = 1$ .

Step-by-step explanation:

Let be $A = (-3,-6)$ and $B = (12, 4)$ endpoints of segment AB and $M$ a point located 7/10 the way from A to B. Vectorially, we get this formula:

$\overrightarrow {AM} = \frac{7}{10}\cdot \overrightarrow {AB}$

$\vec M - \vec A = \frac{7}{10}\cdot (\vec B - \vec A)$

By Linear Algebra we get the location of $M$ :

$\vec M = \vec A + \frac{7}{10}\cdot (\vec B - \vec A)$

$\vec M = \vec A +\frac{7}{10}\cdot \vec B - \frac{7}{10}\cdot \vec A$

$\vec M = \frac{3}{10}\cdot \vec A + \frac{7}{10}\cdot \vec B$

If we know that $\vec A = (-3,-6)$ and $\vec B = (12, 4)$ , then:

$\vec M = \frac{3}{10}\cdot (-3,-6)+\frac{7}{10}\cdot (12,4)$

$\vec M = \left(-\frac{9}{10},-\frac{9}{5} \right)+\left(\frac{42}{5} ,\frac{14}{5} \right)$

$\vec M =\left(-\frac{9}{10}+\frac{42}{5} ,-\frac{9}{5}+\frac{14}{5} \right)$

$\vec M = \left(\frac{15}{2} ,1\right)$

The coordinates of $M$ are $x = \frac{15}{2}$ and $y = 1$ .

6 0

4 years ago

I need help with 10,11,12,13 plz it's due tomorrow

tangare [24]

10. GCF is 3

11. GCF is 4

12. GCF is 16

13. That the numbers are prime

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3 years ago

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zlopas [31]

Answer:

XZ,X(-10,9)

Y(-4,8)

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Meaning of Proportions in Mathmatics

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3 years ago

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a farmer is trying to determine the proper amounts of two fertilizers for her corn crop. She wants to use a total of 300 pounds

8090 [49]

Answer:

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Step-by-step explanation:

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3 years ago