First one because when you subtract 7 u keep the var. x alone and isolate it.
Answer:
y = x + 3
Step-by-step explanation:
Answer:
15 inches.
Step-by-step explanation:
Let the length of each side of square be x
perimeter of square is given by 4*side\
Thus, perimeter of square iwh side x = 4x
Given
length of each side of a square increases by 2.5
new side length of square = x +2.5
New perimeter of the square = 4*( x +2.5) = 4x + 10
given that new perimeter = 70 inches
Thus,
4x + 10 = 70
4x = 70 - 10 = 60
x = 60/4 = 15
Thus, length of each side of original square was 15 inches.
The number of ways when the choice is not relevant is 4
<h3>How to determine the number of ways?</h3>
The number of colors are:
Colors, n = 4
The color to choose are:
r = 3
<u>Relevant choice</u>
When the choice is relevant, we have:
This gives
Evaluate
Ways = 24
Hence, the number of ways when the choice is relevant is 24
<u>Not relevant choice</u>
When the choice is not relevant, we have:
This gives
Evaluate
Ways = 4
Hence, the number of ways when the choice is not relevant is 4
Read more about combination at:
brainly.com/question/11732255
#SPJ1