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3 years ago

50 POINTS!!!

2 answers:

6 0

<span>50 POINTS!!!
SHOW YOUR WORK AND ANSWER CORRECTLY OR ELSE A MODERATOR WILL HANDLE YOU!
Let f (x) = −x^2 − 5x + 36. What is the value of f(-3)?
Show your work. Best answer gets brainliest.</span>
$f(x) = -x^2-5x+36\qquad \qquad f(-3), \\ \\ \\f(-3) = -(-3)^2-5(-3)+36\\ \\f(-3) = -(9)-5(-3)+36\\ \\f(-3) = -9+15+36 \\ \\ \boxed{f(-3) = 42}$

Dima020 [189]3 years ago

3 0

Hello,

Your question states:

Let f (x) = −x^2 − 5x + 36. What is the value of f(-3)?

Your answer would be:

42

Your explanation:

3^2-5(-3)+36
9-15+36
6+36
X=42

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2 years ago

Read 2 more answers

A department store buys 100 shirts at a cost of $700 and sells them at a selling price of $10 each. Find the percent markup.

Serjik [45]

Answer:

42.8%

Step-by-step explanation:

Step one:

given data

A department store buys 100 shirts at a cost of $700

let us find the cost of 1 shirt

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Step two:

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7 0

3 years ago

The base of a solid right pyramid is a regular hexagon with a radius of 2x units and an apothem of units. A solid right pyramid

Xelga [282]

Answer:

$6 x^2*\sqrt{3}$

Step-by-step explanation:

The base of the pyramid we need to study is a hexagon.

Let's look at the attached image of an hexagon to understand how we are going to find the area of this figure.

Notice that an hexagon is the combination of 6 exactly equal equilateral triangles in our case of size "2x" (notice that the "radius" of the hexagon is given as "2x")

Therefore the area of the hexagon is going to be 6 times the area of one of those equilateral triangles.

We know the area of a triangle is the product of its base times its height, divided by 2: $\frac{base*height}{2} = \frac{2x*height}{2}$

We notice that the triangle's height is exactly what is called the "apothem" of the hexagon (depicted in green in our figure) which measures $x\sqrt{3}$ , so replacing this value in the formula above for the area of one of the triangles: