All categories

3 years ago

Max points! I need these answered quick

Mathematics

2 answers:

MaRussiya [10]3 years ago

8 0

Answer:

4) 1/5

5) 5/28

6) 7/36

Step-by-step explanation:

4) 3/15=1/5

5) 5/28

6) 14/72=7/36

svetoff [14.1K]3 years ago

3 0

Answer:

3/5 × 1/3 = 1/5

5/7 × 1/4 = 5/28

7/8 × 2/9 = 7/36

Step-by-step explanation:

You might be interested in

Miguel drove for 8 hours at a constant rate he drove a total of 424 miles.

statuscvo [17]

Answer:

Miguel has a greater unit rate than Donna because 53 mph is greater than 48 mph

Step-by-step explanation:

3 0

3 years ago

Help please...Me and geometry are not compatible in any way

ipn [44]

Answer:

It would be the first one honey :)

Step-by-step explanation:

3 0

4 years ago

A small town has 2000 inhabitants. At 8 AM, 160 people have heard a rumor. By noon half the town has heard it. At what time will

QveST [7]

Answer:

3:36 PM

Step-by-step explanation:

Let fraction (y) of the people that heard the rumor , the differential equation that is satisfied by the by y is,

$\frac{dy}{dt} = ky(1-y)$

Solving the differential equation,

$y(t) = \frac{y_{o}}{[y_{o} + (1 + y_{o})e^{-kt}]}$

The total number of inhabitants of the town = 2000

The number of people that heard the rumor = 160

At 8 AM, let t = 0,

$y(0) = \frac{160}{2000}$

= 0.08

By noon, half of the town as heard the rumor.

Then,

$y(4) = \frac{1}{2}$

Therefore,

$\frac{1}{2} = \frac{0.08}{[0.08 + (1 - 0.08)e^{-4k}]}$

$\frac{0.08}{[0.08 + 0.92e^{-4k}]} = \frac{1}{2}$

$0.08 + 0.92e^{-4k} = 0.16$

$0.92e^{-4k} = 0.16 - 0.08$

$0.92e^{-4k} = 0.08$

$e^{-4k} = \frac {0.08}{0.92}$

$k = - \frac{1}{4} In(\frac {0.08}{0.92})$

k ≈ 0.06106

Calculating time, t when y(t) = 90%

⇒ y(t) = 0.9

$\frac{0.08}{[0.08 + 0.92e^{-0.06106t}]} =0.9$

$0.08 + 0.92e^{-0.06106t} = \frac {0.9}{0.08}$

$0.08 + 0.92e^{-0.06106t} = 0.089$

$0.92e^{-0.06106t} = 0.089 - 0.08$

$0.92e^{-0.06106t} = 0.0089$

$t = - \frac{1}{0.06106}In (\frac{0.0089}{0.92})$

t = 7.59 hours

⇒ 7 hours 36 minutes

From 8 A.M. plus 7 hours 36 minutes = 3:36 PM

At 3:36 PM will 90% of the population have heard the rumor

7 0

3 years ago

I. AM .SO. CONFUSED. HELP. PLZ.

dedylja [7]

Answer:

16mm

Step-by-step explanation:

Just do 40 * 2/5 = 80/5 = 16mm

3 0

4 years ago

A crew is made up of 12 men, the rest are woman. 60% of the crew are men. How many people are in the crew?

Mama L [17]

Answer:

Step-by-step explanation

60/100= 12/x

solve

5 0

4 years ago

Read 2 more answers