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Troyanec [42]
3 years ago
13

4v over 27 equals to 16

Mathematics
1 answer:
Anna [14]3 years ago
8 0
The v is equal to 106. When you multiply four times108, you get 432, then you have to divide it by 27 to get 16.
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a boat traveled 160 miles downstream and back. the trip downstream took 8 hours. the trip back took 40 hours. find the speed of
Nana76 [90]

Let speed of the boat in still water = x miles per hour

Let speed of the current = y miles per hour


When water and current both flow in same direction then effective speed will be sum of both speeds that is (x+y)


now plug the given values in formula speed=distance/time

we get equation:

(x+y)=160/8

or x+y=20...(i)


When water and current both flow in opposite direction then effective speed will be difference of both speeds that is (x-y)

now plug the given values in formula speed=distance/time

we get equation:

(x-y)=160/40

or x-y=4

or x=4+y...(ii)


plug value of x into (i)

4+y+y=20

4+2y=20

2y=16

y=8


plug value of y into (ii)

x=4+8=12


Hence final answer is given by:

Speed of the boat in still water = 12 miles per hour

Speed of the current = 8 miles per hour


4 0
3 years ago
2=n over 3 what does n equal?
Ede4ka [16]

Answer:

n = 6

Step-by-step explanation:

2 = \frac{n}{3}

multiply both sides by 3

=> n = 6

8 0
3 years ago
Read 2 more answers
Can someone please give me the answer to this problem?
Alik [6]
X= 9/2, 15/2
decimal form: 4.5,-7.5
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3 0
3 years ago
Find the area of this circle. Use 3 for 7.<br> A = ar2<br> 7 cm<br> [?] cm2
Bond [772]

Answer:

147

Step-by-step explanation:

Since it says need to use 3 to represent pi

well show the formula.

The radius is 7 so we square it, and do the formula.

A=3r²

A=3*49

A=147

7 0
3 years ago
Pls help trig question!!
s2008m [1.1K]

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\sin x = \dfrac{3 - \sqrt{57}}8\\\\\implies x = n\pi + (-1)^n \sin^{-1} \left(\dfrac{3-\sqrt{57}}8\right)\\\\\\\text{ When n = 1,2 and}~  [0,2\pi]},\\\\\\x= \pi - \sin^{-1} \left(\dfrac{3-\sqrt{57}}8 \right)~ \text{and} ~x =  2\pi + \sin^{-1} \left(\dfrac{3-\sqrt{57}}8 \right)\\\\\text{In decimal,}\\\\x= 3.75~~~~ \text{and}~~~ x =5.68

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2 years ago
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