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3 years ago

Abigail walks 8 miles in 2 hours. How far will she walk at this speed in 3 hours?

Mathematics

2 answers:

Gnoma [55]3 years ago

8 0

Answer:

Step-by-step explanation:

I want to say because if you divide 8 by 2 you get 4 so then you multiply by 3. I think...

SCORPION-xisa [38]3 years ago

3 0

24 because she walks a extra mile

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20 points!!! Which one of the graphs represent the function?

Alexeev081 [22]

Answer:

the second one, but I'm not sure if I'm right

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1 year ago

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aksik [14]

858 divided by 22 is 39....hope this helps

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3 years ago

Read 2 more answers

(1 point) Linear System - Three Variables Solve the following system of equations using Gaussian elimination method. If there ar

EastWind [94]

Answer:

$x=\frac{-363}{70}$ ≈ -5.1857

$y=\frac{-192}{35}$ ≈ -5.4857

$z=\frac{313}{84}$ ≈ 3.7262

Step-by-step explanation:

Rewrite the equation system as:

$6x+8y=-75$

$-3x+6y+6z=5$

$2x-9y=39$

Now, write the system in its augmented matrix form:

$\left[\begin{array}{cccc}6&8&0&-75\\-3&6&6&5\\2&-9&0&39\end{array}\right]$

applying row reduction process to its associated augmented matrix:

Swap R1 and R3, and then Swap R1 and R2:

$\left[\begin{array}{cccc}-3&6&6&5\\2&-9&0&39\\6&8&0&-75\end{array}\right]$

R3+2R1

$\left[\begin{array}{cccc}-3&6&6&5\\2&-9&0&39\\0&20&12&-65\end{array}\right]$

3R2+2R1

$\left[\begin{array}{cccc}-3&6&6&5\\0&-15&12&127\\0&20&12&-65\end{array}\right]$

15R3+20R2

$\left[\begin{array}{cccc}-3&6&6&5\\0&-15&12&127\\0&0&420&1565\end{array}\right]$

Now we have a simplified system:

$-3x+6y+6z=5\\0-15y+12z=127\\0+0+420z=1565$

$-3x+6y+6z=5\hspace{5 mm}(1)\\0-15y+12z=127\hspace{3 mm}(2)\\0+0+420z=1565\hspace{3 mm}(3)$

From (3):

$z=\frac{313}{84}$ (4)

Replacing (4) in (2)

$y=\frac{-192}{35}$ (5)

Finally replacing (5) and (4) in (1)

$x=\frac{-363}{70}$

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3 years ago

What is the equation of the line perpendicular to the line y=-x+2 through the point (3,5)?

mina [271]

A. Y=x+2

I thinks that’s right hope this helps :)

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3 years ago

slamgirl [31]

Answer:

search up on google

Step-by-step explanation:

not hard

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3 years ago