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3 years ago

1.22. If 0 and b? A. b = 90° - a B. b = 90° + a C. b = 180° – a D. b = 180° + a

Mathematics

2 answers:

Kobotan [32]3 years ago

7 0

Answer:

Option A. b = 90° - a

Step-by-step explanation:

we know that

If two angles are complementary, the cofunction identities state that the sine of one equals the cosine of the other and vice versa

sin(a)=cos(b)

then

angle a and angle b are complementary

$a+b=90^o$

isolate the angle b

$b=90^o-a$

max2010maxim [7]3 years ago

5 0

Answer:A.b=90*

Step-by-step explanation:

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shtirl [24]

Answer:

8 red haired and 42 brown haired

Step-by-step explanation:

I chose a random number to start off with (which is 8) and I multiplied it by 5.

8•5=40 and then you have to add 2, so you get 42.

42+8 = 50

The equation would be (5x+2)+x where 'x' is the number of people with red hair.

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2 years ago

The fish population in a local stream is decreasing at a rate of 2.5% per year. The original population was 45,000. Write an exp

Julli [10]

Answer:

y=45000(1-0.03)^x

Step-by-step explanation:

1) the exponential decay formula is

y=c(1-r)^x

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3 years ago

Which statement best describes the function below?

harina [27]

Answer:

D. It is a many-to-one function

Step-by-step explanation:

One-t<em>o-one if every y value has exactly one x value mapped onto it</em>
<em>Many-to-one if there are y values that have more than one x value mapped onto them.</em>

We have a function that is of degree 3, so it has 3 x-intercepts which means there are points (x₁, 0), (x₂, 0), (x₃, 0), so it is a many-to-one function

Correct option is D