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2 years ago

5

HELPPPPPPPPPPPPPPPPPPPPPPPPPP

2 answers:

blsea [12.9K]2 years ago

5 0

i believe the answer is -4.33 :)

nevsk [136]2 years ago

3 0

I think the answer is: -4.25

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Lamar pays 15.60 for a pack of 6 towels. Find the unit price in dollars per towel. If necessary, round your answer to the neares

soldi70 [24.7K]

Divide total price by quantity:

15.60 / 6 = 2.60

Unit price = $2.60

7 0

2 years ago

For the function y=3x2: (a) Find the average rate of change of y with respect to x over the interval [3,6]. (b) Find the instant

nirvana33 [79]

Answer:

The instantaneous rate of change of $y$ with respect to $x$ at the value $x = 3$ is 18.

Step-by-step explanation:

a) Geometrically speaking, the average rate of change of $y$ with respect to $x$ over the interval by definition of secant line:

$r = \frac{y(b) -y(a)}{b-a}$ (1)

Where:

$a$ , $b$ - Lower and upper bounds of the interval.

$y(a)$ , $y(b)$ - Function exaluated at lower and upper bounds of the interval.

If we know that $y = 3\cdot x^{2}$ , $a = 3$ and $b = 6$ , then the average rate of change of $y$ with respect to $x$ over the interval is:

$r = \frac{3\cdot (6)^{2}-3\cdot (3)^{2}}{6-3}$

$r = 27$

The average rate of change of $y$ with respect to $x$ over the interval $[3,6]$ is 27.

b) The instantaneous rate of change can be determined by the following definition:

$y' = \lim_{h \to 0}\frac{y(x+h)-y(x)}{h}$ (2)

Where:

$h$ - Change rate.

$y(x)$ , $y(x+h)$ - Function evaluated at $x$ and $x+h$ .

If we know that $x = 3$ and $y = 3\cdot x^{2}$ , then the instantaneous rate of change of $y$ with respect to $x$ is:

$y' = \lim_{h \to 0} \frac{3\cdot (x+h)^{2}-3\cdot x^{2}}{h}$

$y' = 3\cdot \lim_{h \to 0} \frac{(x+h)^{2}-x^{2}}{h}$

$y' = 3\cdot \lim_{h \to 0} \frac{2\cdot h\cdot x +h^{2}}{h}$

$y' = 6\cdot \lim_{h \to 0} x +3\cdot \lim_{h \to 0} h$

$y' = 6\cdot x$

$y' = 6\cdot (3)$

$y' = 18$

The instantaneous rate of change of $y$ with respect to $x$ at the value $x = 3$ is 18.

5 0

3 years ago

A goal keeper saved 5 out of 50 shots what is the chance that he will save the next shot

Anna [14]

Answer:

10%

Step-by-step explanation:

i think

6 0

3 years ago

True or false? About 10 1/2 million more people live in Cairo than in Washington DC?

mixas84 [53]

7.772 million people live in Cairo.
658,893 people live in Washington DC.
So it's false.

6 0

3 years ago

Read 2 more answers

Let us say there are five flavors of icecream: banana, chocolate, lemon, strawberry and vanilla. we can have three scoops. how m

Morgarella [4.7K]

$C(5,3)=\dfrac{5!}{3!2!}=\dfrac{4\cdot5}{2}=10$

6 0

3 years ago