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3 years ago

What is the slope of the following graphs?

Mathematics

2 answers:

Lynna [10]3 years ago

6 0

Answer:

B; 3/4

Step-by-step explanation:

slope = rise / run

the line goes up, so it is a positive slope. it goes up 3 points, and goes right 4 points.

ohaa [14]3 years ago

3 0

It’s b also known as 3/4

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We want to find the zeros of this polynomial:

fredd [130]

Answer:

x = -3 and x = -3/2

Step-by-step explanation:

After writing down the polynomial, split it; put a line between 3x^2 and -18x. Look and 2x^3 + 3x^2 and -18x - 27 separately and factor them both:

p(x) = 2x^3 + 3x^2 <u>- 18x -27</u>

p(x) = x^2(2x+3) <u>-9(2x+3)</u>

Now notice how x^2 and -9 have the same factor (2x+3). That means x^2 and -9 can go together:

p(x) = (x^2 - 9)(2x+3)

Factor it once more because there's a difference of squares:

p(x) = (x+3)(x-3)(2x+3)

Now just plug in whatever makes the each bracket equal 0:

x = -3, x = 3, and x = -3/2

Those are your zeros.

8 0

3 years ago

If you are 60 inches tall and you cast a 80 inch shadow, how long is a shadow of a building if the shadow is 120 inches?

marta [7]

Answer:

140 inches i think

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

0.489 in two other from

liberstina [14]

One form is 489/1000

5 0

3 years ago

What is the area of this triangle 20 POINTS

Usimov [2.4K]

Answer:

It's 1/2*DB*AC

Step-by-step explanation:

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4 years ago

The junior and senior class officers are sponsoring a homecoming dance. The total cost for the facilities and catering is $45 pe

larisa86 [58]

Answer:

Domain is (0,∞)

Range is (45, ∞)

Step-by-step explanation:

Let x represents the number of persons and f(x) represents the average cost per person,

∵ Fixed cost = $ 2500

Also, additional cost is $ 45 per person,

So, the total cost for x persons ( in dollars ) = fixed deposit + additional cost for x persons,

= 2500 + 45x

$\text{Average cost for x persons}=\frac{\text{Total cost}}{x}$

$\implies f(x)=\frac{2500+45x}{x}$

Which is a rational function,

∵ A rational function is defined for all real numbers except those for denominator = 0

Denominator of f(x) = x

So, f(x) is defined for all real numbers except x ≠ 0,

Now, the cost can not be negative,

⇒ x > 0

Hence, the domain for f(x) is (0, ∞)

Again,

$f(x)=45+\frac{2500}{x}$

If $x\rightarrow \infty$

$f(x)\rightarrow 45$

So, 45 < f(x) < ∞

i.e., range of f(x) is (45, ∞)

5 0

3 years ago