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2 years ago

4/7=×/6 what does × =

Mathematics

2 answers:

mart [117]2 years ago

6 0

Answer:

3 3/7 or 24/7

As a decimal: 3.42857143

Step-by-step explanation:

Rewrite the proportion:

4/7 = x/6

Multiply both sides by 6 to isolate x:

(4/7) * 6 = x

Multiply 4 and 6, 7 is multiplied by 1 since 6 = 6/1:

x = 24/7

Rewrite as mixed number:

7 * 3 = 21

24 - 21 = 3

x = 3 3/7

Brainliest, please :) (Hoping to become a genius)

kkurt [141]2 years ago

3 0

Answer:

3.42857143

Step-by-step explanation:

You multiply 4/7 by 6 to isolate the variable

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Answer:

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3 years ago

What is the simplified form of the expression k^3(K^7/5)^-5

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3 years ago

After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 5.1 m/s2; after 3.6 s he en

Naddik [55]

Answer:

The entering car is going to catch up with the other car after 20.76 seconds.

Step-by-step explanation:

The car leaving the pit area is moving with a constant accelaration, then we can calculate the speed it has when entering the main speedway using the following equation:

$s_1=s_0+a*t_1$

Where $s_0$ is the initial speed (which is zero given that the car starts froms rest), $a$ is the car's accelaration and $t_1$ is the time passed until it reaches the main speedway.

$s_1=s_0+a*t_1=a*t_1$

$s_1=a*t_1=(5.1 \frac{m}{s^2})(3.6s)=18.36 \frac{m}{s}$

For an object travelling at a constant accelation, the displacement $x$ at a time $t$ can be calculate using the following equation:

$x=x_1+(s_1*t)+\frac{1}{2}at^2$ (equation 1)

Let's consider $x_1$ the point where the first car enters the main speedway. If $x_2$ is the point where this car catch up with other one after $t_2$ seconds, we may rewrite the equation 1 like this:

$x_2=x_1+(s_1*t_2)+\frac{1}{2}a(t_2)^2$

$x_2=(s_1*t_2)+\frac{1}{2}a(t_2)^2$ (equation 2)

In other hand, the second car is travelling at a constant speed $(v)$ when it meets the entering car. Then, its displacement $(d_2)$ after $t_2$ seconds can be calculated using the following formula:

$d_2=v*t_2$ (equation 3)

The entering car is going to catch up with the other one when $x_2=d_2$ , so when can find how much time this will require equaling equations 2 and 3 and isolating $t_2$