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3 years ago

In a class of all girls, 22 of the 28 students have brown hair. What is the

Mathematics

1 answer:

Verdich [7]3 years ago

4 0

Answer:

$\frac{3}{14}$

Step-by-step explanation:

Total Students = 28

Brown Hair = 22

NOT Brown Hair = 28 - 22 = 6

The probability of an event is the number of that event divided by total number.

So, let denote probability of without brown hair be P(NOT BROWN). So, we can say:

P(NOT BROWN) = 6/28

Reducing, we get:

P(NOT BROWN) = 3/14

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Lnx=-3

scZoUnD [109]

Answer:

because It's rounded to the nearest hundred place

Step-by-step explanation:

Given equation:

$\ln(x ) = - 3$

recall that,

$\ln(a ) = b \iff {e}^{b} = a$

remember, In is natural logarithm which is actually nothing but common logarithm with the base euler's number (e) . anyway rewriting lnx=-3 yields:

$\ln( x ) = - 3\\ \iff {e}^{ - 3} = \frac{1}{ {e}^{3} }$

1/e³ is approximately 0.0497870684..... , rounding it to the nearest hundred place would be 0.05 which is the same answer as your textbook .

3 0

2 years ago

Patricia pays $1.19 each to download songs to her MP3 player,if n is the number of downloaded songs, which equation represents t

nikklg [1K]

$1.19 each to download songs
n = number of downloaded songs
C = 1.19n

The answer would be A. C = 1.19n. Hope this helps!

5 0

3 years ago

a source of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b an

marissa [1.9K]

Let AM be the distance between point A and the right wall and AN be the distance between A and the left wall.
Δ AMB is an isosceles right triangle and Δ ANC is half of an equilateral triangle.
Length of AM = 30 m. Length of AN = 1/2 · 80 = 40 m.
The distance between the walls is:
30 m + 40 m = 70 m.

4 0

3 years ago

Layla bought three skirts and five pairs of shorts for a total price of $112 at the same store is sent to you by four skirts and

iren2701 [21]

I don't really know the answer sorry :/

5 0

3 years ago

Find the value of x. Round to the nearest degree as needed.

Bas_tet [7]

9514 1404 393

Answer:

x° = 29°

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relevant trig relationships. Here, you have the hypotenuse and the side opposite the unknown angle. So, the appropriate relation is ...

Sin = Opposite/Hypotenuse

sin(x°) = 12/25

x° = arcsin(12/25) ≈ 28.69°

The value of x is about 29.

4 0

2 years ago