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3 years ago

How would I figure out the answer of my assignment

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

5 0

What is your assignment about

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The annual rainfall in a certain region is approximately normally distributed with mean 41.8 inches and standard deviation 5.8 i

kicyunya [14]

I believe the answer would be B

8 0

3 years ago

Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

Find the value of AC

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

Find the value of BC

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

Find the value of BD

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

the answer is

the length of BD is 11.93 units

8 0

3 years ago

Read 2 more answers

Find the difference a. 41- 275 b. -15 - 47 c. -72 - (-151) d. 612 - (-144)

Gekata [30.6K]

Answer:

41-275=234

15-47=62

-72-{151}=223

612-144=174

Step-by-step explanation:

6 0

3 years ago

a tap can fill a bucket in 2 minutes, another in 3 minutes. If both are turned on how long does it take to fill the bucket?

Rama09 [41]

Answer:

It takes 1 minute 12 seconds to fill the bucket if both taps are turned on.

Step-by-step explanation:

One tap fills the bucket in 2 minutes, thus fills 1/2 of the bucket in one minute.
Other tap fills the bucket in 3 minutes, thus fills 1/3 of the bucket in one minute.
Both together fill 1/2+1/3=5/6 of the bucket in one minute.
If they can fill 5/6 of the bucket in 1 minute, they fill 1/6 of the bucket in 1/5 minute.
They can fill the bucket (6/6) in 1+1/5 minute
This is 1 minute 12 seconds

6 0

3 years ago

Through: (4, -1), parallel to y = -3/4x

Arada [10]

Is this a algebra question? I just want to know?

8 0

3 years ago