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Kryger [21]
3 years ago
9

A boat can travel 10 miles downstream in the same time it

Mathematics
1 answer:
AleksAgata [21]3 years ago
3 0

Answer:

\frac{10}{x+2} = \frac{3}{x-2}

Step-by-step explanation:

The 10 represents the speed traveling downsteam while the 3 represents speed upstream. Downstream you have the help of the current, so it would be x + 2, upstream you are working against the current so it would be x - 2.

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Hippalectryon
ryzh [129]
Checking answer A:
distance from U to V = -2-(-11)=9
distance from U to W =7-(-2)=9  -> same distance !

checking answer B:
distance U-V : -2-(-8)=6
U-W : -2-(-6)=4 -> not the same distance

answer C :
U-V : -2-(-6)=4
U-W : 6-(-2)=8 -> not the same distance

answer D :
U-V : 0-(-2)=2
U-W : 2-(-2)=4 -> not the same distance

Conclusion : answer A
7 0
3 years ago
Read 2 more answers
Please answer this correctly
Nana76 [90]

20% of the students chose a cupcake = 20 / 100: Shade 20 squares.

20 / 100 = x / 55

100x = 1100

x = 11 students who chose a cupcake

Hope this helps!! :)

8 0
3 years ago
What is the radius of a hemisphere with a volume of 165\text{ cm}^3,165 cm 3 , to the nearest tenth of a centimeter?
DanielleElmas [232]

Answer:

4.3cm

Step-by-step explanation:

the radius of the hemisphere can be determined its volume

volume of a hemisphere = (2/3) x (n) x (r^3)

n = 22/7

r = radius

(2/3) x (22/7) x( r^3) = 165 cm^3

44/21 x r^3 = 165

divide both sides of the equation by 21/44

165 x 21/44

r^3 = 78.75

find the cube root

r = 4.2863 cm

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

the 100th terms, 8 is greater than 6, so add 1 to 2. this give 4.3cm

4 0
3 years ago
What is the length of the hypotenuse of the triangle
Darya [45]

Answer:

The length of the hypotenuse is the square root of 289 or 17 cm.

Step-by-step explanation:

So the formula for finding the hypotenuse of any triangle is a square plus b square equals c square. 15 square plus 8 square is 289, You'd have to find its square root which equals 17 cm. If this helps, please rank Brainliest. Thanks!

6 0
3 years ago
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Simplify the expression 2 • (3 + 5 − 1) • 2
s2008m [1.1K]
I think the simplify expression is 2^2 x 7 = 28. Sorry if it is wrong
8 0
3 years ago
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