All categories

2 years ago

100 points this is math help!!!

Mathematics

2 answers:

bija089 [108]2 years ago

6 0

The answer is a math book but for some reason at first all I could think of was penguins

andriy [413]2 years ago

3 0

Answer:

A math test

Step-by-step explanation:

I just Goggled it lol

You might be interested in

Rewrite the expression in terms of the given function 1/1-sinx - sinx/1+sinx

Feliz [49]

Your question seems a bit incomplete, but for starters you can write

$\dfrac1{1-\sin x}-\dfrac{\sin x}{1+\sin x}=\dfrac{1+\sin x}{(1-\sin x)(1+\sin x)}-\dfrac{\sin x(1-\sin x)}{(1+\sin x)(1-\sin x)}=\dfrac{1+\sin x-\sin x(1-\sin x)}{(1-\sin x)(1+\sin x)}$

Expanding where necessary, recalling that $(1-\sin x)(1+\sin x)=1-\sin^2x=\cos^2x$ , you have

$\dfrac{1+\sin x-\sin x(1-\sin x)}{(1-\sin x)(1+\sin x)}=\dfrac{1+\sin x-\sin x+\sin^2x}{\cos^2x}=\dfrac{1+\sin^2x}{\cos^2x}$

and you can stop there, or continue to rewrite in terms of the reciprocal functions,

$\dfrac{1+\sin^2x}{\cos^2x}=\sec^2x+\tan^2x$

Now, since $1+\tan^2x=\sec^2x$ , the final form could also take

$\sec^2x+\tan^2x=\sec^2x+(\sec^2x-1)=2\sec^2x-1$

or

$\sec^2x+\tan^2x=(1+\tan^2x)+\tan^2x=1+2\tan^2x$

7 0

3 years ago

Carrie and Nick get out of school at 2:45. They both ride the bus home. Carrie is dropped off at her house 25 minutes after scho

jarptica [38.1K]

Answer:

carrie is dropped off first

Step-by-step explanation:

2:45+25=3:10

and jack was dropped off at 3:15 so carrie is dropped off first

3 0

3 years ago

Read 2 more answers

A jar contains 8 red marbles numbered 1 to 8 and 7 blue marbles numbered 1 to 7. A marble is drawn at random from the jar. Find

Shkiper50 [21]

Answer:

Therefore the probability that the marble is blue or even numbered is $\frac{11}{15}$

Step-by-step explanation:

Probability: The ratio of favorable outcomes to the total outcomes.

It is denoted by P.

$Probability= \frac{\textrm{favorable outcomes}}{\textrm{Total outcomes}}$

Given that a jar contains 8 red marbles and 7 blue marbles.

Total number of marbles = (8+7) = 15

Let A = Event of getting a blue marble

B= Event of getting of even marble.

Even number blue marbles are 2, 4,6

Even number red marbles are 2, 4,6,8

The number of even marbles are =(3+4)=7

The probability of getting a blue marble is P(A)

$=\frac{\textrm{Total number of blue marbles}}{\textrm{Total number of blue marbles}}$

$=\frac{7}{15}$

The probability of getting a even marble is P(B)

$=\frac{\textrm{The number of even number marbles}}{\textrm{Total number of marbles}}$

$=\frac{7}{15}$

The probability of getting a even numbered blue marble P(A∩B)

$=\frac{3}{16}$

P(blue marble or even- numbered)

=P(A∪B)

=P(A)+P(B)-P(A∩B)

$=\frac{7}{15} +\frac{7}{15}-\frac{3}{15}$

$=\frac{11}{15}$

Therefore the probability that the marble is blue or even numbered is $\frac{11}{15}$

3 0

3 years ago

if there is 8 bags of trail mix and each bag contains 3 and 1/2 and it is shared among 12 hikers how many cups of trail mix will

Katen [24]

$3 \frac{1}{2} = \frac{7}{2}$

$\frac{7}{2} \times 8 = 28$

$\frac{28}{12} = \frac{14}{6} = \frac{7}{3} = 2 \frac{1}{3}$

So each hiker gets 2 1/3 cup of trail mix.

8 0

2 years ago

Round your answer to the nearest hundredth.

DanielleElmas [232]

Answer:

36.87°

Step-by-step explanation:

sin(A)/a = sin(C)/c

sin(x)/3 = sin(90)/5

sin(x)/3 = 0.2

sin(x) = 0.6

x= sin^-1(0.6)

x = 36.86989765

4 0

3 years ago