Solve for x. y=7x−7z−9

2 answers:

6 0

You have to isolate the variable so you need to add 7z and 9 to both sides. You then get y+ 7z+ 9= 7x. Then divide 7x from both sides. The equation becomes x= y/7+ z + 9/7.
I hope this helps love! :)

AleksandrR [38]3 years ago

5 0

Answer:

The value of x is $x=\frac{y+7z+9}{7}$

Step-by-step explanation:

Consider the provided equation.

$y=7x-7z-9$

We need to solve the equation for x.

Add 7z to both the sides.

$y+7z=7x-7z+7z-9$

$y+7z=7x-9$

Add 9 to both the sides.

$y+7z+9=7x-9+9$

$y+7z+9=7x$

Divide both sides by 7.

$x=\frac{y+7z+9}{7}$

Hence the value of x is $x=\frac{y+7z+9}{7}$ .

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Answer:

78% probability that a randomly selected online customer does not live within 50 miles of a physical store.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this problem, we have that:

Total outcomes:

100 customers

Desired outcomes:

A clothing vendor estimates that 78 out of every 100 of its online customers do not live within 50 miles of one of its physical stores. So the number of desired outcomes is 78 customers.

Using this estimate, what is the probability that a randomly selected online customer does not live within 50 miles of a physical store?

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