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victus00 [196]
3 years ago
14

Plz help on both will give branlyist and thx

Mathematics
1 answer:
Radda [10]3 years ago
8 0

Answer:

Part 1) 132\ ft^{2}

Part 2) 27\ ft^{2}

Step-by-step explanation:

Part 1) we know that

The area of the figure is the area of one trapezoid multiplied by 2

<u>Find the area of one trapezoid</u>

A=\frac{1}{2}(b1+b2)h

we have

b1=9\ ft

b2=15\ ft

h=11/2=5.5\ ft

substitute

A=\frac{1}{2}(9+15)5.5=66\ ft^{2}

<u>Find the area of the figure</u>

2*66\ ft^{2}=132\ ft^{2}

Alternative Method

The area of the figure is equal to the area of a rectangle plus the area of triangle

so

A=11*9+\frac{1}{2}(11)(15-9)\\ \\A=99+33\\\\A=132\ ft^{2}

Part 2) we know that

The area of the hexagon is equal to the area of one triangle multiplied by 6

<u>Find the area of one triangle</u>

A=\frac{1}{2}bh

we have

b=3\ ft

h=3\ ft

substitute

A=\frac{1}{2}(3*3)=4.5\ ft^{2}

6*4.5\ ft^{2}=27\ ft^{2}

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If f(x) = 3x^2 – 2 and g(x) = 2x + 4, find (f- g)(x).
Andreas93 [3]

Answer:

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<u>Pre-Alg</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x² - 2

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(f - g)(x) is f(x) - g(x)

<u>Step 2: Evaluate</u>

  1. Substitute:                    (f - g)(x) = 3x² - 2 - (2x + 4)
  2. Distribute -1:                 (f - g)(x) = 3x² - 2 - 2x - 4
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Can anyone help me out with this?
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Answer:

Triangle I think........

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