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3 years ago

What is the equivalent ratio of 6-7

2 answers:

6 0

The equivalent ratio of 6-7 is 12:14

to figure out the equivalent ratios you multiply whatever the numbers are by two.

example 7-9 is equivalent to 14:18 make sense?

hope this helped

makkiz [27]3 years ago

3 0

6×2 ⇒ 12
7×2⇒ 14
= 12 : 14

6×3⇒ 18
7×3⇒ 21
=18:21

Lastly, the equivalent ratio of 6 and 7 (aka 6:7) is
↓↓↓↓
12:14 & 18:21

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Joshua traveled 5 hours from City A to City B. The distance between the cities is 260 miles. First he traveled at the constant s

ruslelena [56]

Joshua travelled for 3 hours at the constant speed of 60 mi/h

<h3><u>Solution:</u></h3>

Given that, Joshua traveled 5 hours from City A to City B

The distance between the cities is 260 miles.

First he traveled at the constant speed of 40 mi/h, and then at the constant speed of 60 mi/h.

So, let the number of hours he travelled with 40 mi/h be "n" hours and the distance travelled be "x" miles

Then, the time in which he travelled with 60 mi/h will be 5 – n hours and distance travelled will be 260 – x miles

We have to find how many hours did he travel at the constant speed of 60 mi/h

<em><u>The relation between speed and distance is given as:</u></em>

$\text { distance }=\text { speed } \times \text { time. }$

$\begin{array}{l}{40 \mathrm{mil} / \mathrm{h} \times \mathrm{n} \text { hours }= x \text { miles }} \\\\ {\rightarrow x=40 \mathrm{n} \rightarrow(1)} \\\\ {\text { And } 60 \times(5-\mathrm{n})=260-x \text { miles }}\end{array}$

$\begin{array}{l}{\rightarrow 300-60 n=260-40 n(\text { from }(1))} \\\\ {\rightarrow 60 n-40 n=300-260} \\\\ {\rightarrow 20 n=40} \\\\ {\rightarrow n=2}\end{array}$

So, he travelled 2 hours with speed of 40 mi/h and 5 – 2 = 3 hours with speed of 60 mi/h

Hence, he travelled for 3 hours

5 0

3 years ago

Which of the following is a representation of 12!

Softa [21]

Answer:

Step-by-step explanatik just need the points

6 0

3 years ago

At a time denoted as t = 0 a technological innovation is introduced into a community that has a fixed population of n people.

PSYCHO15rus [73]

Answer:

The differential equation is

dR/dt = -k(2x - n)dx/dt for k > 0

Assuming initially, one person adopts the innovation, then

dR/dt = 0

Step-by-step explanation:

Total number of people in the community is "n"

At time t, the number of people who

have adopted the innovation is "x(t)"

This Tells us that (n - x) people haven't adopted the innovation.

It is assumed that the rate at which the innovations spread through the community is jointly proportional to the number of people who have adopted it and the number of people who have not adopted it.

Let R be the rate, then

R is proportional to x(n - x)

R = kx(n - x) = -kx(x - n)

Differentiating this with respect to time, t, we have

dR/dt = (-k(x - n) - kx)dx/dt

dR/dt = -k(2x - n)dx/dt for k > 0

And this is the differential equation.

Assuming initially, one person adopts the innovation, then

dR/dt = 0

3 0

4 years ago

Y=-x-1what is the dlope??

UkoKoshka [18]

-1 because the negative sign in front of the x means it’s a negative 1 x

5 0

3 years ago

AB and CD are straight line segments.

frutty [35]

Answer:

<h2>i) Angle AOC is 95° </h2>

Reason:- Angle AOC is equal to Angle DOB since they are Vertically Opposite Angles.

<h2>ii) Angle BOC is 85°</h2>

Reason:- Angle AOC + Angle BOC - 180° (they lie in a straight line so they are a linear pair. Sum of the angles will be 180°)

Angle AOC is 95°, So:-

95° + Angle BOC = 180°

Angle BOC= 180° - 95°

<h3><u>Angle BOC = 85°</u></h3>

<u></u>

<h2>iii) Angle DOE is 17°</h2>

Reason:- Angle AOE+ Angle DOE+ Angle DOB = 180° (they lie in a straight line so they're a linear pair. Sum of the angles will be 180°)

So,

68° + Angle DOE+ 95° = 180°

163° + Angle DOE = 180°

Angle DOE= 180° - 163°

<h3><u>Angle DOE is 17°</u></h3>

5 0

3 years ago