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Effectus [21]
3 years ago
15

a boat traveled 27 miles in 2 hours at this rate how many miles will the boat travel in 1/2 hour as a fraction

Mathematics
1 answer:
nata0808 [166]3 years ago
6 0
13 1/2 miles per hour
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Use cramers rule to solve 4x+3y=4 -3x-y=7 show your work
Nataly_w [17]
\left\{\begin{array}{ccc}4x+3y=4\\-3x-y=7\end{array}\right\\\\D=  \left|\begin{array}{ccc}4&3\\-3&-1\end{array}\right|=(4)(-1)-(-3)(3)=-4+9=5\\\\D_x=\left|\begin{array}{ccc}4&3\\7&-1\end{array}\right|=(4)(-1)-(7)(3)=-4-21=-25\\\\D_y=\left|\begin{array}{ccc}4&4\\-3&7\end{array}\right|=(4)(7)-(-3)(4)=28+12=40\\\\x=\dfrac{D_x}{D}\Rightarrow x=\dfrac{-25}{5}=-5\\\\y=\dfrac{D_y}{D}\Rightarrow y=\dfrac{40}{5}=8
8 0
3 years ago
he A water pail in your backyard has a small hole in it. You notice that it has drained a total of 1.5 liters in 4 days. What is
Naddika [18.5K]

Answer:

0.375 liters per day

Step-by-step explanation:

1.5 / 4 = 0.375 liters per day

3 0
2 years ago
What is 128/23 i want you to explain the most complex way as you can!
Alborosie

Divide the fraction gives you an irrational number since the decimal goes on forever but since the decimal can be written as a "fraction or ratio" it is rational.

Best of Luck!

4 0
2 years ago
Read 2 more answers
PLEASE HELP!!!
Drupady [299]

Answer:

t^2+4

Step-by-step explanation:

The perimeter of the table can be given by the equation 2l+2w, and we know the length is 2t-3, meaning 2(2t-3)+2w=2t^2+4t+2, as we know 2t^2+4t+2 is the perimeter. Simplifying we get:

4t-6+2w=2t^2+4t+2

4t+2w=2t^2+4t+8

2w=2t^2+8

w=t^2+4

This means that the table's width is t^2+4

5 0
3 years ago
What is the equation of a line parallel to y=4/5x+2 that passes through 1,2<br>​
givi [52]

Answer:

4/5x+6/5

Step-by-step explanation:

not sure but i have my ways with equations lol

6 0
3 years ago
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