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3 years ago

The times for running a 5K for a local charity event are Normally distributed. Which standardized time represents the

Mathematics

2 answers:

IrinaK [193]3 years ago

6 0

Answer:

–1.88

there! my friend!

Lesechka [4]3 years ago

4 0

Answer:

1.13

Step-by-step explanation:

Edge 2021 hope this helps

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Ravi purchased n notebooks. They were 5 dollars each. Write an equation to represent the total cost c that Ravi paid

Veseljchak [2.6K]

c = 5n

the cost (c) would equal (=) the number or notebooks (n) times $5 (5) because each is five dollars.

8 0

3 years ago

Is y=-½x+2 perpendicular to -2x+1

BartSMP [9]

Answer:

i think no sorry if im whrong

3 0

3 years ago

They charge $5 per ticket for a child and $12 per ticket for an adult they sell a total of 342 tickets and make a total of $2250

Olenka [21]

Answer: the number of children tickets sold 265

the number of adult tickets sold 77

Step-by-step explanation:

Let x represent the number of children tickets sold.

Let y represent the number of adult tickets sold.

They charge $5 per ticket for a child and $12 per ticket for an adult. They were sold for a total of $2250. This means that

5x + 12y = 2250 - - - - - - - - - -1

The total number of tickets sold is 342. This means that

x + y = 342

Substituting x = 342 - y into equation 1, it becomes

5(342 - y) + 12y = 2250

1710 - 5y + 12y = 2250

- 5y + 12y = 2250 - 1710

7y = 540

y = 540/7 = 77

x = 342 - y = 342 - 77

x = 265

3 0

3 years ago

Give the largest interval over which the general solution is defined. (Think about the implications of any singular points. Ente

Leto [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

No singular point due to the exponent in the solution

The interval is $-\infty$

NONE

Step-by-step explanation:

From the question we are told that

$\frac{dy}{dx} = 9y$

The generally solution is mathematically represented as

$\frac{dy }{dx} = 9y$

=> $\frac{dy}{y} = 9dx$

integrating both sides

$\int\limits {\frac{ dy}{y} } \, = \int\limits {9} \, dx$

=> $lny = 9x + c$

=> $y = e^{9x +c }$

=> $y = e^{9x} e^{c}$

Here $e^c = C$

=> $y = C e^{9x}$

From the above equation we see that the domain for x has no singular point the interval is

$-\infty$

Also there is no transient term in the general solution obtained because as $x \to \infty$ there no case where $y \to 0$

7 0

3 years ago

Point A(4,3), point B(-1,3) find the equation

Andrews [41]

Answer:

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have two points A(4, 3) and B(-1, 3).

Substitute:

$m=\dfrac{3-3}{-1-4}=\dfrac{0}{-5}=0$

The slope m = 0, therefore it's a horizontal line.

The equation of a horizontal line:

$y=a$ where a is any real number

The line passes through points A and B, where ordinates are equal 3.

Therefore the equation is

$y=3$

3 0

3 years ago