Solve for the area of the part shaded in purple

Mathematics

2 answers:

Vitek1552 [10]3 years ago

6 0

Answer:

area of a trapezium

1/2 ( a+b)h

1/2 (15+9)15

1/2 *24*15

12*15

=180

alexira [117]3 years ago

5 0

Answer:

180 cm

Step-by-step explanation:

this is because if you find the correct area of the purple rectangular shape first, you would have the equation 15 x 9. this equation will give us an answer of 135 mm. our next step would be to find the area of the triangle.

our equation for this will be 15 x 6. this will give us our answers of 90. but because it is a triangle, we will have to divide by two. given is 45. our new equation will now be 135 + 45 given us our sum of 180 cm for the assumed area.

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inessss [21]

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3 years ago

Which is f(5) for the function -2x2 + 2x - 3?

Schach [20]

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Solution:

Given function is:

$f(x) = -2x^2+2x+3$

We have to find the value of f(5)

To find the value of f(5), we have to substitute x is equal to 5 in given function

Plug in x = 5 in f(x)

$f(x) = -2x^2+2x+3\\\\f(5) = -2(5)^2+2(5) + 3\\\\\text{Simplify the above expression }\\\\f(5) = -2(25) + 10 + 3\\\\\text{Solve the above expression }\\\\f(5) = -50 + 10 + 3\\\\f(5) = -40 + 3 = -37$