**Step-by-step explanation:**

We are offered a straight equation in terms of variable x and also y as follows:

Now, we space asked to find the worth of x because that the given value that y.

You are watching: What is the value of x in the equation x – y = 30, when y = 15?

i.e. We need to evaluate the offered equation for the given value of y.

Now we room given: y= 15

so by putting this worth in equation (1) we have:

On including 15 ~ above both the sides of the equation us have:

A)12 months in a year52 weeks in a year$10 x 52 main = $520 because that lottery tickets$400 x 12 month = ($400 x 10) + (400 x 2) = 4000 + 800 = $4800 because that rentadding increase the yearly complete for both $520+$4800 = $5320b) 4800 split by 100 = 48 = 1% of rental 520 separated by 48 = 10.8% (11% if rounding)

ou occupational in the packaging room of a company that renders soup. The old soup deserve to is 4 inch high and has a diameter that 3 inch

**katifund.org:**

**Step-by-step explanation:**

**Remark**

This question is a little ambiguous. You can not it is in sure just how to act the Chiefs. Encompass their 10 or not. Transforms out friend do.

So the total score was 45

But this deserve to be resolved without making use of that information. The vital is that the total variety of plays made to be 13

**Givens**

Let the touchdowns = x

Let the allude after = y

Let the field goals = z

The variety of point afters = the touchdowns. X = y

The number of touchdowns is 6 time the field goals: z = x / 6

**Equation.**

x + y + z = 13 substitute x for y

**Solution**

x + x + z = 13 incorporate the left: instead of x/6 because that z

2x + x/6 = 13 main point by 6 to eliminate the fraction

6*2x + x = 13 * 6 combine the left

12x + x = 13*6 integrate the left

13x = 13 * 6 division by 13 ~ above both sides.

13x/13 = 6

x = 6

====================

**katifund.org**

x = 6

y = 6

z = 1

**Check**

It"s time to see what happened.

See more: A Colonist Who Could Be Ready To Fight In A Minute’S Notic, Battles Of Lexington And Concord (Article)

6 touchdowns = 6 * 6 = 36

6 solitary points = 6 * 1 = 6

1 ar goal = 3

Total 45

Apparently we obtained the right katifund.org. Friend made one little error in the last equation. Z must equal x/6

Very amazing problem. Sports stat males are going come love this question. Thanks for posting.