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grin007 [14]
3 years ago
6

How many km per hour must you swim if you want to cross a 5-km channel in 4 hours?

Mathematics
2 answers:
ELEN [110]3 years ago
6 0
The amount you mus swim is 1.25 km an hour

hodyreva [135]3 years ago
5 0
The actual answers is that you would have to swim at 1.25 mph to reach your goal. 48 minutes pet km!
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52% of what number equals 39
OverLord2011 [107]
To figure this equation out, you'll have to divide 39 by 52% (0,52)

39 / 0.52 = 75

39 is 52% of 75 is your answer.

Hope this helps!
8 0
3 years ago
Read 2 more answers
Simplify the expressions and evaluate for (i) y = -2, (ii) y = 3.<br> 3y (2y-7) - 3 (y - 4) - 63
Diano4ka-milaya [45]

Simplified expression is 6y² - 24y - 51. Value for y=-2 is 21 and value for y=3 is  -69.

Step-by-step explanation:

  • Step 1: Given expression is 3y(2y-7) - 3(y - 4) - 63. Simplify it.

⇒ 6y² - 21y - 3y + 12 - 63

⇒ 6y² - 24y - 51

  • Step 2: Find value of the expression for y = -2

⇒ 6y² - 24y - 51 = 6(-2)² - 24(-2) - 51 = 24 + 48 - 51 = 21

  • Step 3: Find value of the expression for y = 3

⇒ ⇒ 6y² - 24y - 51 = 6(3)² - 24(3) - 51 = 54 - 72 - 51 = -69

8 0
4 years ago
What is the answer to 3x+2x+7=22
gavmur [86]

Answer:

Step-by-step explanation:

3x+2x+7=22

5x+7-7=22-7

5x=15

5x/5=15/5

X=3

8 0
3 years ago
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PLEASE HELP!!!!!!<br> who every gets it right I will give brainly and 20 points
Sindrei [870]

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8 0
2 years ago
F(pi/3)= 4, f'(pi/3)= -2, g(x)= f(x)sinx, h(x)= cosx/f(x)<br> Find g'(pi/3)<br> Find h'(pi/3)
alukav5142 [94]
I hope this helps you

5 0
3 years ago
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