Ask question

Ask question

All categories

2 years ago

5

Andrew can complete a job by himself in 20 minutes. if aijalon helps him, they can complete the job in 12 minutes. how long woul

d it take aijalon to complete the job by himself? (in minutes.) rate of work problem

1 answer:

Misha Larkins [42]2 years ago

6 0

Answer:

30 min

Step-by-step explanation:

1 / ( 1/20 + 1/ x) = 12

1 = 12/20 + 12/x

8/20 = 12/x

x = 12 * 20 / 8 = 30 min

You might be interested in

Find the absolute maximum and absolute minimum values, if any, of the function. (If an answer does not exist, enter DNE.)f(x) =

lyudmila [28]

Answer:

The absolute minimum value is " $-\frac{21}{4}$ " and the absolute maximum value is " $15$ ".

Step-by-step explanation:

Given:

$f(x)=x^2-x-5$

on,

$[0,5]$

By differentiating it, we get

⇒ $f'(x)=2x-1$

Set $f'(x)=0$

then,

⇒ $2x-1=0$

$2x=1$

$x=\frac{1}{2}$ (Critical point)

When x=0,

⇒ $f(x)=-5$

When $x=\frac{1}{2}$ ,

⇒ $f(x)=-\frac{21}{4}$ (Absolute minimum)

When $x=5$

⇒ $f(x)=15$ (Absolute maximum)

7 0

3 years ago

How to i solve for v for this following equation -19v = -17v – 14

EastWind [94]

The answer will be v=7

8 0

4 years ago

Read 2 more answers

What is the correct factorization of<br> 5(x + 2) – 3x(x + 2)?

ryzh [129]

(5x + 10) - (3x^2 + 6x)

5 0

3 years ago

suppose that a given country of 72 million people about 3,600 die from drowning each year what is the percent chance that a pers

Trava [24]

Your answer is 0.003%

4 0

3 years ago

Can you exchange the coordinates of points ( x 1, y 1) and ( x 2, y 2) in the distance formula and still find the correct distan

notka56 [123]

Answer:

yes

Step-by-step explanation:

As an example

(x₁, y₁ ) = (1,2) and (x₂, y₂ ) = (5,3), then

d = $\sqrt{(5-1)^2+(3-2)^2}$ = $\sqrt{4^2+1^2}$ = $\sqrt{16+1}$ = $\sqrt{17}$

Now let (x₁, y₁ ) = (5,3) and (x₂, y₂ ) = (1,2), then

d = $\sqrt{(1-5)^2+(2-3)^2}$ = $\sqrt{(-4)^2+(-1)^2}$ = $\sqrt{16+1}$ = $\sqrt{17}$

3 0

3 years ago