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2 years ago

15

Find the slope of the line graphed below

1 answer:

Gnom [1K]2 years ago

6 0

Answer:

6/4 or 3/2

Step-by-step explanation:

Think about it this way: Rise(⬆) over run (➡).

So count up from the bottom point to the line where the second point lies this is your rise.

Then count over however many spaces over the point is. (4). This is your run.

Then its in fraction form (6/4) and then you simplify to (3/2)

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A set of magical wand prices are normally distributed with a mean of 50 dollars and a standard deviation of 4 dollars. A blackth

Anna11 [10]

Complete Question

A set of magical wand prices are normally distributed with a mean of 50 dollars and a standard deviation of 4 dollars. A blackthorn wand has a price of 45.20. What proportion of wand prices are lower than the price of the blackthorn wand? You may round your answer to four decimal places

Answer:

0.1151

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score = $45.20

μ is the population mean = $50

σ is the population standard deviation = $4

We are solving for x < 45.20

Hence:

z = 45.20 - 50/4

z = -1.2

Probability value from Z-Table:

P(x<45.20) = 0.11507

Approximately to 4 decimal places = 0.1151

Therefore, the proportion of wand prices that are lower than the price of the blackthorn wand is 0.1151

8 0

2 years ago

You invest $5000 at 6.25% interest. How much is in your account after 8 years if

romanna [79]

Answer:

A. annually I believe it's the answer bc you add interest every year that way

6 0

2 years ago

Read 2 more answers

Solve the initial value problem: y'(x)=(4y(x)+25)^(1/2) ,y(1)=6. you can't really tell, but the '1/2' is the exponent

goblinko [34]

Answer:

$y(x)=x^2+5x$

Step-by-step explanation:

Given: $y'=\sqrt{4y+25}$

Initial value: y(1)=6

Let $y'=\dfrac{dy}{dx}$

$\dfrac{dy}{dx}=\sqrt{4y+25}$

Variable separable

$\dfrac{dy}{\sqrt{4y+25}}=dx$

Integrate both sides

$\int \dfrac{dy}{\sqrt{4y+25}}=\int dx$

$\sqrt{4y+25}=2x+C$

Initial condition, y(1)=6

$\sqrt{4\cdot 6+25}=2\cdot 1+C$

$C=5$

Put C into equation

Solution:

$\sqrt{4y+25}=2x+5$

or

$4y+25=(2x+5)^2$

$y(x)=\dfrac{1}{4}(2x+5)^2-\dfrac{25}{4}$

$y(x)=x^2+5x$

Hence, The solution is $y(x)=\dfrac{1}{4}(2x+5)^2-\dfrac{25}{4}$ or $y(x)=x^2+5x$

4 0

2 years ago

Erica makes 27 dollers every 4 1/2 hours. How much does she make for 12 hours ?

kodGreya [7K]

Answer:

72 dollars I believe

Step-by-step explanation:

5 0

2 years ago

What is the y-value of the vertex of the function f(x)=-(x-3)(x+11)?<br> -8<br> оооо

tigry1 [53]

Answer:

49

Step-by-step explanation:

desmos is extremely helpful! :)

hope I could help

7 0

3 years ago