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Nookie1986 [14]
2 years ago
10

F(a)=a^2=4a;find f(-2)

Mathematics
1 answer:
Tanzania [10]2 years ago
5 0

Answer:

1

I HOPE I HELPPPPP BRAINLYY PLZZ :))))

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Step-by-step explanation:

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What is the area of this figure? Please help
Katena32 [7]

Answer:

<u>117 yd²</u>

Step-by-step explanation:

Area of figure :

  • Area (triangle) + Area (vertical rectangle) + Area (horizontal rectangle)
  • (1/2 x 18 x 7) + (11 x 2) + (8 x 4)
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3 years ago
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Given the following polynomial find the maximum possible number of turning points. f(x)=x8+x14+x6+x13
sergeinik [125]
F(x) = x^6(x^2 + x^8 + x^7 + 1)

The number of turning point depends on the number of real roots. 

By graphing, x^8 + x^7 + x^2 + 1 = 0 has no real roots.

So that means f(x) only have on turning point when x = 0
5 0
3 years ago
Triangle XYZ has sides XY=3”, YZ =4”, and XZ=5”. If angle Y is a right angle, and side YZ is opposite angle X , what is the tan
MA_775_DIABLO [31]

Answer:

tan(X) = 4/3 and tan(Z) = 3/4

Step-by-step explanation:

* Lets revise the trigonometry functions

- In any right angle triangle:

# The side opposite to the right angle is called the hypotenuse

# The other two sides are called the legs of the right angle

* If the name of the triangle is ABC, where B is the right angle

∴ The hypotenuse is AC

∴ AB and BC are the legs of the right angle

- ∠A and ∠C are two acute angles

- For angle A

# sin(A) = opposite/hypotenuse

∵ The opposite to ∠A is BC

∵ The hypotenuse is AC

∴ sin(A) = BC/AC

# cos(A) = adjacent/hypotenuse

∵ The adjacent to ∠A is AB

∵ The hypotenuse is AC

∴ cos(A) = AB/AC  

# tan(A) = opposite/adjacent

∵ The opposite to ∠A is BC

∵ The adjacent to ∠A is AB

∴ tan(A) = BC/AB

* Now lets solve the problem

- In Δ XYZ

∵ m∠Y = 90°

∵ XY = 3 inches , YZ = 4 inches , XZ = 5 inches

∴ The hypotenuse is XZ

∴ The legs of the right angle are XY and YZ

* To find tan(X) use YZ as opposite to it and XY as adjacent to it

∵ tan(X) = YZ/XY ⇒ opposite/adjacent

∴ tan(X) = 4/3

* To find tan(Z) use YX as opposite to it and ZY as adjacent to it

∵ tan(Z) = YX/ZY ⇒ opposite/adjacent

∴ tan(Z) = 3/4

* tan(X) = 4/3 and tan(Z) = 3/4

7 0
3 years ago
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