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Lunna [17]
3 years ago
15

Explain when each method(graphing, substitution,linear combinations) is a good method to find a solution to a system of equation

s.
Mathematics
2 answers:
ikadub [295]3 years ago
8 0
Graphing is good to graph a line. Substitution is good because you have to subtitute the value whichis easy and elimination is good just to find oone variable first and the other variable
PSYCHO15rus [73]3 years ago
6 0
Graphing is a good method when you have small integers or fractions as your slope.
Substitution is a good method when you have two equations, and when one of the coefficient of the variables is one.
Linear combinations is a good method when you have the same coefficient for the same variable in 2 different equations.
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Can u help me answer this? A tree is 8.5 feet tall. It grows 0.75 feet each year.
alexandr1967 [171]

Hmm... 8.5 + 0.75y

          0.75y + 8.5

         

5 0
3 years ago
Searches related to Elon sat on the dock with his fishing rod, when suddenly he felt the rod being pulled down! He reeled in his
Ray Of Light [21]
The graph is attached.

We first graph the point where his catch reached the surface, (35, 0).  Since it travels upward at a constant rate, the graph will be linear.  We also need to know where it starts (what depth it is at when he begins reeling it in).  We can use the formula d=rt as a template for our function.  d would be distance (in our case, depth), r is the rate (speed) and t is the amount of time.

To find how far the catch had to travel to reach the surface, we set up our equation as:
d = 0.1(35) 

This will tell us how much distance it traveled in 35 seconds.  0.1(35)=3.5, so the catch started 3.5m under water.  It then travels up at 0.1 m per second.

3 0
3 years ago
Please help me, this is due in 2 hours and I need this done plz.
bija089 [108]

Answer:

It's probably it

Step-by-step explanation:

A = (-4, -2)

B = (1, 6)

Imagine a new point (C) where they intersect (1, -2)

Now we can form a triangle, the distance between A and B will be the hypotenuse.

h² = 5² + 8²

h² = 25 + 64

h² = 89

h = \sqrt{89}

h = ~9.43...

h = 9

5 0
2 years ago
A set of 12 windup toys costs $9. What is the cost per windup toy?
-BARSIC- [3]

Answer:

0.75

Step-by-step explanation:

9 ÷ 12 = 0.75

hope this helps...

4 0
3 years ago
Read 2 more answers
Why is adding 3/9 and 6/9 different from multiplying the two fractions?
xenn [34]
First off 3/9 and 6/9 are already common denominators. In some fractions you would need to find the least common denominator like in a problem like 1/2 + 4/5. Also 3/9 plus 6/9 results in 9/9 and 9/9 equals 1. Most fractions adding it subtracting results in a pan answer as a fraction but in this case it’s a whole number.
6 0
3 years ago
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