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2 years ago

10

Verify the Pythagorean Identity.

1 answer:

tigry1 [53]2 years ago

8 0

To solve this problem you must apply the proccedure shown below. You have that:

1+cot^2θ=csc^2θ (You have that cos^2θ+sin^2θ=1)<span>
1+(cos^2</span>θ/sin^2θ)=csc^2θ
1+(1-sin^2θ/sin^2θ)csc^2θ
sin^2θ+1-sin^2θ=csc^2θ
1/sin^2=csc^2 (You have that 1/sin=csc)

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Please help me with this assignment I need help and been struggling with it so please help me and is due by 7;50 pm please answe

gavmur [86]

Answer:

5. DBE and CBA both=48 degrees

6. a. scalene, right

b.isosceles, obtuse

c. scalene, acute

7. 50 degrees

8. im not completely sure how to do this one but ill check into it

Step-by-step explanation:

its a lot to explain, in 5 find p and plug it in.

in 6, just look at the sides and angles.

scalene- no sides equal

isosceles- 2 sides equal

equilateral- all sides equal

right- one 90 degree angle

acute- all acute angles (less than 90)

obtuse- one obtuse angle (more than 90)

7. add 90 and 40 to get 130. 180-130=50

8. im gonna look up how to do this one right now

6 0

2 years ago

The population of a species is modeled by the equation p(t)=-t^4+72t^2+225, where t is the number of years. find the approximate

Shtirlitz [24]

Answer:

The approximate number of years until the species is extinct will be 9 years

Step-by-step explanation:

We are given

The population of a species is modeled by the equation

$p(t)=-t^4+72t^2+225$

where

t is the number of years

we have to find time when species extinct

we know that any species will be extinct only if population of that species becomes 0

so, we can set P(t)=0

and then we can solve for t

$p(t)=-t^4+72t^2+225=0$

we can factor it

$(t^2+3)(t^2-75)=0$

$(t^2+3)=0$

we get t value as imaginary for this equation

$(t^2-75)=0$

$t=\sqrt{75}$

$t=8.660$

So,

the approximate number of years until the species is extinct will be 9 years

8 0

2 years ago

#26: Identify the domain. <br><br> {(1,-3), (3,1),(5,5), (7,9), (9,13)}

liraira [26]

Answer:

C. 1,3,5,7,9

Step-by-step explanation:

The domain is all of the values of x.

So, in this case, the domain is 1,3,5,7,9.

-hope it helps

6 0

2 years ago

Find the range of f(x) = –x + 4 for the domain {–3, –2, –1, 1}.

marishachu [46]

Answer:

$\boxed{ \{7, 6, 5, 3 \} }$

Step-by-step explanation:

The domain is all possible values for x.

The range is all possible values for f(x) or y.

The domain given is {-3, -2, -1, 1}.

Plug x as {-3, -2, -1, 1} and find the f(x) or y values.

$f(-3)=-(-3)+4=7\\f(-2)=-(-2)+4=6\\f(-1)=-(-1)+4=5\\f(1)=-(1)+4=3$

The range is {7, 6, 5, 3}, when the domain is {-3, -2, -1, 1}.

5 0

2 years ago

Solve for C:<br><br> C + 8 = -11<br><br> C = _____

stiv31 [10]

Well what +8 will be -11.
Let’s take this as positives.
8+11=19
Sooo
-19+8=-11
C=-19

7 0

2 years ago

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