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3 years ago

Please help? Urgent! Thank you!

Mathematics

2 answers:

ICE Princess25 [194]3 years ago

7 0

a) for unit rate you need the miles walked and the amount of money made from that.

Example: $45 divided by 3 = $15

b) Beth raised $5 more per mile than both manuel and petra. Manuel and Petra raised the same amount of money per miles

Elodia [21]3 years ago

3 0

Part b. They earn .75 per mile by 3 people.

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Which situation has the greatest rate of change? Filling a swimming pool with 100 gallons of water in 15 minutes or pumping 12 g

viktelen [127]

Answer:

Pumping gas into take with greater rate of change.

Step-by-step explanation:

Rate of change is equal to change in number of gallons per minutes.

Here we have two case

Case 1: Filling swimming pool with 100 gallons of water in 15 minutes.

So, we find how many gallons fill in 1 minutes.

$\text{Rate }=\frac{\text{Number of gallons}}{\text{Total minutes}}$

$\text{Rate }=\frac{100}{15}\approx 6.67\text{ gallons/min}$

Case 2: Pumping 12 gallons of gas into tank in 3 minutes.

So, we find how many gallons fill in 1 minutes.

$\text{Rate }=\frac{\text{Number of gallons}}{\text{Total minutes}}$

$\text{Rate }=\frac{12}{3}\Rightarrow 4\text{ gallons/min}$

Rate of case 2 is greater than case 1.

Thus, Pumping gas into tank with greater rate of change.

8 0

3 years ago

Select the correct answer.

Readme [11.4K]

Answer:

i think it might be the letter D

3 0

3 years ago

Please help me solve either one will mark brainliest!! thank you!! Easy

RoseWind [281]

Answer:

A is A=2(1+2)a2

B is A≈208.18cm²

Step-by-step explanation:

A explanation is A=2(1+2)a2=2·(1+2)·102≈482.84271

B explanation is A=145(5+25)a2=14·5·(5+2·5)·112≈208.17777cm²

3 0

3 years ago

Read 2 more answers

Please help I'm bad at math i don't understand

dybincka [34]

Answer:

a) Vertex is at (-3, -1)

b) y-intercept is at (0,8)

c) x intercept is at (-4,0) and (-2,0)

d) x=-3

Step-by-step explanation:

The vertex of a parabola is the lowest or highest point, implying that all points are reflected across it. It's the only y value that doesn't have a corresponding pair.

For example, -1 and 1, -3 and 3, and so on.

The vertex is at (-3,-1) because it is the sole point without a corresponding y value (-3,-1)

The y-intercept is where the parabola meets the y axis or when the x value equals 0. To determine the y-intercept, simply find when x = 0.

intercept y: (0,8)

The x-intercepts are the same as the y-intercepts; you must determine where the parabola crosses the x-axis or when y = 0.

x intercept 1:(-4,0)

x intercept 2: (-2,0)

The axis of symmetry is also the x coordinate of the vertex which is 3 so

x = 3

7 0

3 years ago

How do I find the Derivative of a Function where the x is a number?

lisov135 [29]

Given a function g(x), its derivative, if it exists, is equal to the limit

$g'(x) = \displaystyle\lim_{h\to0}\frac{g(x+h)-g(x)}h$

The limit is some expression that is itself a function of x. Then the derivative of g(x) at x = 1 is obtained by just plugging x = 1. In other words, find g'(x) - and this can be done with or without taking a limit - then evaluate g' (1).

Alternatively, you can directly find the derivative at a point by computing the limit

$g'(1) = \displaystyle\lim_{h\to0}\frac{g(1+h)-g(1)}h$

But this is essentially the same as the first method, we're just replacing x with 1.

Yet another way is to compute the limit

$g'(1) = \displaystyle\lim_{x\to1}\frac{g(x)-g(1)}{x-1}$

but this is really the same limit with h = x - 1.

You do not compute g (1) first, because as you say, that's just a constant, so its derivative is zero. But you're not concerned with the derivative of some number, you care about the derivative of a function that depends on a variable.

8 0

3 years ago