Answer:
the third side is 40 m long
Step-by-step explanation:
The perimeter of the triangle is the sum of its three sides, and they give you what that value in meters is (120 m)
Your are given the length of two of them: 30 m and 50 m, and need to find the third one (let's call it "x" for this unknown side)
Now set the following equation:
Perimeter = side 1 + side 2 + side 3 --> replace these with the info you know
120 m = 30 m + 50 m + x --> add 30 m and 50 m obtaining 80 m
120 m = 80 m + x --> now solve for x (isolate the x on one side) by subtracting 80 m from both sides
120 m - 80 m = x --> perform the subtraction 120 m - 80 m = 40 m
40 m = x
Which tells us that the third unknown side has a length of 40 m
Answer: The y-intercept is an (x,y) point with x=0
Step-by-step explanation:
Answer:
20
30
Step-by-step explanation:
Do 5 times ten.
5 times -6
Gives you 20
Then do 6 times 4, 6 times 10, to get the final answer of 30.
Answer: 14+5x
Step-by-step explanation:
(18+8x) - (4+3x)
18+8x-4-3x
14+5x
Answer:
The answer is 45
Step-by-step explanation:
The equation is a straightforward one, we have:
2/3x = 30
because we have a fraction on at least one side, we will cross multiply thus:
2x = 30 x 3
2x = 90
Next, we divide both sides by 2 to make x the subject of the formula, we have 2x/2 = 90/2
x = 45
Therefore, it takes Ingrid 45 minutes to complete her essay
