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3 years ago

Please help me I'm stuck on these questions!

Mathematics

1 answer:

defon3 years ago

8 0

5.) (part 1) is 5x^3, part 2 is 0.25x^2
6.) part 1.) D^2. Part 2.) T^2
7.) part 1.) x^9, part 2.) y^10
9.) part 1.) 15x^2y^3, part 2.) 5ab

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If angle x=55% and angle y=35, calculate the following 1.cos(x+y)

Setler79 [48]

Answer:

cos(X+Y) = cos(55+35) = cos(90) = 0

Step-by-step explanation:

cos(X+Y) = cosXcosY - sinXsinY

cos(55+35) = cos(55)cos(35) - sin(55)sin(35)

cos(55+35) = cos(55)cos(35) - cos(90-55)cos(90-35)

cos(55+35) = cos(55)cos(35) - cos(35)cos(55)

cos(55+35) = 0

cos(90) = 0

4 0

3 years ago

50 POINTS ANSWER QUICK

Andreyy89

Answer:

part a= -1

part b= -4

Step-by-step explanation:

f(x) is y. plug in -4 for y and check x

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2 years ago

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Help!!<br><br> Simplify the fraction 56/64 as much as possible.

STatiana [176]

Answer:

simplest form is 7/8

Step-by-step explanation:

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3 years ago

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Find the coefficient of the x7y2term in the binomial expansion of (x+y)^9

statuscvo [17]

Answer:

Step-by-step explanation:

first, see the formula in the attached picture.

now, by applying that formula we get :

the coefficient of the x7y2 is :

9C7 = 36 (you can either use a calculator or just the algebraic formula)

8 0

3 years ago

On a blueprint of a house, 48 millimeters represents 7 meters. The length of the living room is 60 millimeters on the blueprint.

Pani-rosa [81]

Here is the equation 48/7=60/x, 48÷7=6.8571428571. Now we know that every one meter in real life is equal to 6.8571428571 millimeters so, 60÷6.8571428571= 8.75 meters. The living room is 8.75 meters

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3 years ago