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cestrela7 [59]
3 years ago
8

There are 25boys and 15girls in a class.if a student is picked at random .what is the probability that the student is a girl

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

Total Students in Class = 25+ 15=40

Probability= (Number of Girls in Class) ÷ (Total students in Class)

Probability of girl= 15  ÷ 40 = 0.375

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rewona [7]

Answer:

f(3) =  {3}^{2}  + 5(3) - 9 \\ f(3) = 9 + 15 - 9 \\ f(3) = 15

3 0
3 years ago
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The speed that a tsunami can travel is modeled by the equation s = 356 startroot d endroot , where s is the speed in kilometers
Naddika [18.5K]

The approximate depth of water for a tsunami traveling at 200 kilometers per hour is 0.32 km.

<h3>What is speed?</h3>

Speed can be calculated as the ratio of distance traveled to the time taken.

The speed that a tsunami can travel is modeled by the equation

s = 356√d, where s is the speed in kilometers per hour and d is the average depth of the water in kilometers.

S = 356√d

200 = 356√d

√d = 200/356

= 0.5618

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Thus, The approximate depth of water for a tsunami traveling at 200 kilometers per hour is 0.32 km.

Learn more about speed;

brainly.com/question/4723349

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2 years ago
QUIZ<br> Find the volume of the square pyramid.<br> 9 cm<br> 4 cm
kari74 [83]

Answer:

SEE BELOW

Step-by-step explanation:

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5 0
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Answer is 7

Step by step explanation

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A student can solve 20 problems in 30 minutes. How long would it take him to solve 50 problems? Answer fast please.
stiks02 [169]
The answer will be 60
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