<span>5 ,1 ,-3,-7 ? what the dickens is going on?
notice, from 5 to 1, is really -4 units,
from 1 to -3, is -4 units as well, 1 -4 = -3 and so on.
so, to get the next term's value, you simply subtract 4 from the current one, namely -4 is the "common difference".
and we also know the first term is 5, ok... then
</span>
<span>
</span>
let x represent granddaughter and x +2 for grandson and together they = 12
so then we have the equation of x+2+x = 12
combine like terms 2x +2 =12
-2 from both sides to isolate x
2x=10 divide both sides by 2 to get x by itself
so we get x = 5 then add 2 +5=7
so grandson is 7 and granddaughter is 5
Remember that the angles in a triangle add to 180 degrees. So, to solve, you add the two angles you have and subtract that difference from 180.
The equation that can be used to find the number of points is 9 + (14 × x) = 331 and the value is 23.
<h3>How to illustrate the information?</h3>
From the information, Sonia has completed 14 levels of a video game and has 9 points so far in her current level and she has a total of 331 points.
Let the number of points earned be illustrated as x.
The equation that can be used to find the number of points she earned for completing each level will be:
9 + (14 × x) = 331
9 + 14x = 331
14x = 331 - 9
14x = 322
Divide
x = 322 / 14
x = 23
The number of points is 23.
Learn more about equations on:
brainly.com/question/13763238
#SPJ1
