12kilometers
If 2cm=8km, 1cm=4km
Multiply both by three and you get that 3cm=12km
So represent missing number with x
x means unknown so
x+-1=+1
adding a negative means subtraction
x-1=1
you can do anything to an equation as long as you do it to both sides
add 1 to both sides
x+1-1=1+1
x+0=2
x=2
the number is 2
Answer:
Option A. 356 gidgets
Step-by-step explanation:
we have
R(x) ----> the monthly revenue function
C(x) ---> the monthly cost function
x ----> the number of gidgets sold
we know that
Break-even means that the revenue equals cost
so
solve for x
1. if we add something in x then it will also add up in value of y
2. x by 5 times then y value increases by 3*5 = 15 times
3. if x is added with 5 then y value increases by 8.
<h3>What is Algebra?</h3>
Algebra is the part of mathematics that helps represent problems or situations in the form of mathematical expressions.
As, per the first part
y=x
So, if we add something in x then it will also add up in value of x.
In second part,
y=3x
If x by 5 times then y value increases by 3*5 = 15 times
In third part, if x is added with 5 then y value increases by 8.
Learn more about algebra here:
brainly.com/question/953809
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Answer:
area of rectangle =length ×width
area of rectangle=12yd×15yd
area of rectangle=180yd²
