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3 years ago

Caleb's kayak is 12 3⁄5 feet long. Ava's kayak is 20 2⁄5 feet long. How much longer is Ava's kayak?

1 answer:

7 0

7 4/5 feet long because 20 2/5 can't be subtracted by 12 3/5 so you change 20 2/5 to 19 7/5. 19-12=7 and 7-3=4 so the answer is 7 4/5 feet long

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A ferry departs from a port along the Sands River at 10:00 am. The ferry travels at a speed of 15 mph in still water and returns

jek_recluse [69]

Answer:

Speed of river's current = 5 mph

Step-by-step explanation:

Let 'd' be the distance covered

Let x be the speed of the rivers current

Speed upstream = 15-x

speed downstream = 15+x

Time = distance / speed

time upstream = $\frac{d}{15-x}$

time downstream = $\frac{d}{15+x}$

the ferry trip upstream takes twice as long as its return trip downstream

$\frac{d}{15-x}$ = $\frac{2d}{15+x}$

divide both sides by d

$\frac{1}{15-x}$ = $\frac{2}{15+x}$

cross multiply

$15+x= 2(15-x)$

$15+x= 30-2x$

Add 2x on both sideds

$15+3x= 30$

subtract 15 from both sides and divide by 3

$3x=15$

x=5

Speed of river's current = 5 mph

8 0

3 years ago

The bearing of a plane from an airport is 65 degrees

AleksAgata [21]

Answer:

115

idk how to explain this but u just use the protractor

8 0

4 years ago

Read 2 more answers

The radio is of a circle is 3 millimeters what is the circles circumference

nlexa [21]

c = 2(3.14)(radius)

c = 2(3.14)(3)

<em>multiply all those numbers together to get your circumference.</em>

c = 18.84.

6 0

3 years ago

Please let me know what you guys think about this problem

Molodets [167]

Answer:

8.8%

Step-by-step explanation:

you have ( $150 / $1695 ) * 100 = 8.8

4 0

3 years ago

What are the expressions to fin the radius of an object having a circumference of 46 feet

dolphi86 [110]

Since the equation for solving circumference is 2 $\pi$ r, you can see that 2 $\pi$ r = 46. Dividing 2 $\pi$ on both sides will give you r, or the radius.
Hope this helped! :)

3 0

3 years ago