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Phoenix [80]
3 years ago
11

X X ___ That is my brain

Mathematics
1 answer:
Ierofanga [76]3 years ago
6 0
280cm.
you multiply 8x5 then divide by 2. once you get that answer, you multiply by 14z
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The answer to all 11.
madam [21]

Answer:

The rate of the current is 2 miles per hour.

Step-by-step explanation:

Let us assume that the rate of the river is v miles per hour.

The speed of the boat is 12 miles per hour.

Let us assume also that the boat can go 21 miles in t hours in the downstream and 15 miles upstream at the same time i.e. t hours.

So, from the condition given we can write that  

12 + v = \frac{21}{t} ......... (1), and  

12-v =\frac{15}{t} ......... (2)

Now, adding those two equations we get  

24 = \frac{21}{t} +\frac{15}{t} = \frac{36}{t}

⇒ t = \frac{3}{2} hours

Now, from equation (1), we get,  

12 + v = \frac{21}{\frac{3}{2} } =14

⇒ v = 2 miles per hour

Therefore, the rate of the current is 2 miles per hour. (Answer)

8 0
3 years ago
Find the area of a parallelogram with a base of 14 m and a height of 5 m.
gulaghasi [49]
Answer would be 70m squared
5 0
3 years ago
Exercise 1: Solve the follo<br> a) 3x + 5 = 36<br><br> What’s the answer
Dafna11 [192]

Step-by-step explanation:

3x + 5 = 36

3x = 36 - 5 = 31 (subtract 5 on both sides)

3x = 31

x = 31/3 (divide 3 on both sides)

Hence x = 31/3.

5 0
3 years ago
Solve for k. show work!
dolphi86 [110]

Answer:

71 degrees

Step-by-step explanation:

A right angle is 90 degrees, so the answer is 90-19=71 degrees.

4 0
3 years ago
How do you simplify <br> -5(a-6) + 2a
Vilka [71]
Easy, take your problem,

-5(a-6)+2a

Multiply the 5.

-5a+30+2a

Then just add apples and oranges.

-5a+2a= -3a.

Making your equation -3a+30.
4 0
3 years ago
Read 2 more answers
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