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olga nikolaevna [1]

3 years ago

9

You put the names of all the students in your class in a paper bag. There are 19 boys and 12 girls. If you draw a name at random

, what is P(boy’s name)?

2 answers:

Evgen [1.6K]3 years ago

7 0

19/31 61%...............................................

mamaluj [8]3 years ago

3 0

Probability is the total yes answers/total possible answers
boys/total
19/31

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Blizzard [7]

$\\ \rm\Rrightarrow 3.2\times 10^3$

$\\ \rm\Rrightarrow 32\times 10^2$

$\\ \rm\Rrightarrow 320\times 10^1$

$\\ \rm\Rrightarrow 320(10)$

$\\ \rm\Rrightarrow 3200$

7 0

3 years ago

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Andrew's math teacher entered the seventh grade students in a math competition there was an enrollment fee of $30 and also an $1

N76 [4]

Answer: 110

Step-by-step explanation:

Given;

Total cost C = $151

Enrollment fee E = $30

Charge per 10 test t = $11

n is the number of packet of test taken.

The questions can be represented by the equation below;

30 + 11n = 151

Substracting 30 from both sides.

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Since the number of packet of test is 11 and each packet contains 10 tests. The number of test N is given by;

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5 0

4 years ago

An automobile travels past the farmhouse at a speed of v = 45 km/h. How fast is the distance between the automobile and the farm

yulyashka [42]

Answer:

$\frac{ds}{dt} = 39.586 km/h$

Step-by-step explanation:

let distance between farmhouse and road is 2 km

From diagram given

p is the distance between road and past the intersection of highway

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$s^2 = 2^2 +p^2$

differentiate wrt t

we get

$\frac{d}{dt} s^2 = \frac{d}{dt} (4 + p^2)$

$2s \frac{ds}{dt} =2p \frac{dp}{dt}$

$\frac{ds}{dt} = \frac{p}{s}\frac{dp}{dt}$

$\frac{ds}{dt} = \frac{p}{\sqrt{p^2 +4}} \frac{dp}{dt}$

putting p = 3.7 km

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3 0

4 years ago

Write a polynomial function given the zeros 5, 6+2i, and 6-2i and passes through the point (2, 64)

ivolga24 [154]

Answer:456 thatas the answer

Step-by-step explanation:

6 0

3 years ago

I need help with both questions...

NikAS [45]

Answer:

17. a)

Step-by-step explanation:

17.

f(x) =x/2, then f(x-3)=(x-3)/2

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f(x-3)+3=0+3=3

18.

f(x) =x/2

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3 0

3 years ago

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