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tamaranim1 [39]
3 years ago
13

3. Use powers to rewrite these problems:

Mathematics
1 answer:
VLD [36.1K]3 years ago
7 0
A=Y^6
B=7^4•n^5•m
C=y^4
D=t^4
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You row a canoe x miles per hour down a river for 20 minutes. On the return trip, you travel 1 mile per hour slower. The return
ozzi

Answer:

Total Distance = 2 miles

Step-by-step explanation:

We know D = RT where

D is distance

R is rate (speed)

T is time

First Leg:

Rate = x mph

Time = 20/60 = 1/3 hour

Hence, D = RT, Distance = x * 1/3 = x/3 miles

Second Leg:

Rate = x - 1

Time = 30/60 = 1/2 hour

Distance = (x - 1) * 1/2 = (x-1)/2

Total distance is the sum of both the legs, hence,

Total distance = \frac{x}{3}+\frac{x-1}{2}=\frac{2x+3(x-1)}{6}=\frac{2x+3x-3}{6}=\frac{5x-3}{6} miles

Since both the distance are equal we can equate and solve:

\frac{x}{3}=\frac{x-1}{2}\\2x=3x-3\\x=3

Plugging this x = 3 into the total distance expression, we get:

\frac{5x-3}{6}\\\frac{5(3)-3}{6}\\=2

Total distance, 2 miles

5 0
3 years ago
Find the value of each expression: 9P3
melamori03 [73]
Ask your teacher for help you didn't give us a lot of details at all . Sorry I could help you .
8 0
3 years ago
PLeasehelppp me with this problem
melisa1 [442]
You would need 8.25 cups 
8 0
3 years ago
Read 2 more answers
Number sides sum of the interior angles
Temka [501]
Number of sides is 6- Hexagon

Sum of interior angles equation- s=(n-2)*180
s= (6-2)*180
s= 4*180
s=720
Sum is 720
Hope this is helpful
5 0
3 years ago
Which graph represents the function<br><br> A<br> B<br> C<br> D
klemol [59]
I think the answer it would be D
7 0
3 years ago
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