Answer:
Let x represent the smaller number and y represent the larger number
<u>For the first equation </u>
Four times a number added to 3 times a larger number is 31 is written as
4x + 3y = 31
Making y the subject we have
3y = - 4x + 31
Divide both sides by 3
That's
<u>For the second equation</u>
Seven subtracted from the larger number is equal to twice the smaller number is written as
y - 7 = 2x
Making y the subject
We have
<h3>y = 2x + 7</h3>
Hope this helps you
The symbol to show that there are parallel lines is normally just a set
of vertical lines. Although if these are being drawn on a page and need
to be labelled as part of a shape or diagram, sometimes arrows will be
used to show they are parallel - either one arrow in the middle of the
line, or two arrows to show they are parallel but in different
directions.
I think that the theorem is the consecutive exterior angle theorem.
We are given with the point (5,-4) where x is 5 and y is equal to -4. in this case, we can get the six trigonometric identities from this data. the hypotenuse is equal to sqrt 41 accrdg to pythagorean theorem.
cos theta = 5/ <span>sqrt 41
</span>csc theta = -<span>sqrt 41/ 4
</span>tan theta = -4/5
To find this answer, you must first find out how much each car makes them. You do 144 divided by 24 to do this. You get the answer 6. Which means that they make $6 for each car washed.
Now that you know how much each car wash makes them, you multiply 6 by 30 to get how much they earned on Sunday.
6 x 30= 180.
So, they earned B.$180 on Sunday