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maksim [4K]
3 years ago
11

I donot understand at all

Mathematics
1 answer:
loris [4]3 years ago
8 0

Answer:

sorry i dont understand either!!!

Step-by-step explanation:

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A sphere is not a polyhedron true or false?
lesya [120]

it is false because a sphere is basically a three- dimensional circle. It is a polyhedron.

7 0
2 years ago
A boat took 5 h to travel 60 km up a river, against the current. The return trip took 3 h. Find the speed of the boat in still w
Dafna11 [192]

Answer:

Correct answer: V₁ boat = 16 km/h and V₂ current = 4 km/h

Step-by-step explanation:

If we take speed (velocity) of the boat as V₁ and speed of the current V₂

Let us form equations:

Traveling down the current  V₁ + V₂ = 60/3 = 20 km/h

Traveling against the current  V₁ - V₂ = 60/5 = 12 km/h

V₁ - V₂ = 12

V₁ + V₂ = 20

If we add up the left and right sides of the equations we get:

2 V₁ = 32  =>    V₁ = 32/2 = 16 km/h

from the second equation we get:

V₂ = 20 - V₁ = 20 - 16 = 4 km/h

V₂ = 4 km/h

God is with you!!!

8 0
3 years ago
Which number produces a rational number when added to 1/2
JulijaS [17]

Answer:

C.   0.314.

Step-by-step explanation:

1/2 is rational. The answer is another rational number.

The only rational number in the list is 0.314.

3 0
3 years ago
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4(a+2)=8+4a <br> What is the value of a
madreJ [45]

Answer:

there is no answer they are equal. anything can be put into a and it will still be true

Step-by-step explanation:

4a+8=8+4a

there is no answer

7 0
3 years ago
When June sits down today to read she notices she is on page 20 of a 200 page book. She decides to read 4 pages of this book eve
Olegator [25]
The answer is b. 60 || 4x10=40, 40+20=60
5 0
3 years ago
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