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3 years ago

Helppppp meeeeeeeee pleaseeee!!!!

Mathematics

1 answer:

postnew [5]3 years ago

7 0

Answer: oh boi this is gonna take a long time to type. hang in there.

Step-by-step explanation:

#1: Soooooo. A rule is used to find the age of Cassandra's mother no matter the age of Cassandra. Therefore, the answer to #1 is 2C + 9 = M where C is equal to the age of Cassandra.

#2: The rule 2C + 9 = M relates to this because the variale C represents Cassandra's age, the +9 represents her age plus nine is her Mother's age, the 2 in front of the variable C represents the doubling of Cassandra's age, and M represents her mother's age.

#3: The rule IS the process that each student used to find her mother's age. This is how they are both related (the process and the rule).

#4: This is all you because I'm pretty sure this is from another problem you did or something.

#5: For a and b, try to find what x (the input) is done to ... to get y (the output). Look for patterns between the two numbers and look for a RULE that can be used for all. The number 0 is the most important when looking for the rule. :)

OH! MAKE SURE TO PUT THIS INTO YOUR OWN WORDS! (maybe you and i have a different way of speaking and this might get SUS)

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Am I correct? Please help

KIM [24]

Yes yes You you are are

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3 years ago

Given: sin ∅= 4/5 and cos x = -5/13 ; evaluate the following expression.<br><br> tan( ∅ - x )

Pavlova-9 [17]

By definition of tangent,

tan(θ - x) = sin(θ - x) / cos(θ - x)

Expand the sine and cosine terms using the angle sum identities,

sin(x ± y) = sin(x) cos(y) ± cos(x) sin(y)

cos(x ± y) = cos(x) cos(y) ∓ sin(x) sin(y)

from which we get

tan(θ - x) = (sin(θ) cos(x) - cos(θ) sin(x)) / (cos(θ) cos(x) + sin(θ) sin(x))

Also recall the Pythagorean identity,

cos²(x) + sin²(x) = 1

from which we have two possible values for each of cos(θ) and sin(x):

cos(θ) = ± √(1 - sin²(θ)) = ± 3/5

sin(x) = ± √(1 - cos²(x)) = ± 12/13

Since there are 2 choices each for cos(θ) and sin(x), we'll have 4 possible values of tan(θ - x) :

• cos(θ) = 3/5, sin(x) = 12/13 :

tan(θ - x) = -56/33

• cos(θ) = -3/5, sin(x) = 12/13 :

tan(θ - x) = 16/63

• cos(θ) = 3/5, sin(x) = -12/13 :

tan(θ - x) = -16/63

• cos(θ) = -3/5, sin(x) = -12/13 :

tan(θ - x) = 56/33

7 0

2 years ago

Read 2 more answers

2. Answer the following questions.

Anettt [7]

Coordinates will show the vertices of the triangle, and using the vertices, calculate length of the sides of the triangle.With the side length you can now calculate the angles of the triangle.

Step-by-step explanation:

The coordinates of the triangle can be plotted on a graph tool to give you the exact shape.Then using the coordinates that represent vertices for the triangle, apply the distance formula; $d=\sqrt{(y_2-y_1)^2 + (x_2-x_1)^2}$

This gives the length of the sides of the triangle.With the side length values, you can apply the cosine rule : c²=a²+b²-2ab cos c to find the angles in the triangle.

Lean More

Triangle relationships : brainly.com/question/7722758

Keyword : coordinates, geometry

#LearnwithBrainly

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3 years ago

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DedPeter [7]

Answer:

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Step-by-step explanation:

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