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Arisa [49]
2 years ago
13

When is the substitution method a better method than graphing for solving a system of linear equations?

Mathematics
1 answer:
Allisa [31]2 years ago
7 0
Vasgr dgwqaesf asgeqhqethqe asgqeh
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Can someone run the answers alot of points given
ryzh [129]
2. 112
3. 0.08
4. idk if there is a decimal between the 2 and 4 if there is your answer is 4.08 if there isn't your answer is 40.8
7. 0.04
8. 19.78
7 0
3 years ago
Sound travels through sea water at a speed of about 1500 meters per second. At this rate, how far will sound travel in 2 minutes
Mariulka [41]

Answer:

180,000 m

Step-by-step explanation:

There are 60 seconds in a minute, so:

2 min × 60 s/min = 120 s

Distance = rate × time

d = 1500 m/s × 120 s

d = 180,000 m

8 0
3 years ago
A line goes through the points (-1,9) and (1,1).Write the equation of this line in point slope form using one of these points.
Mashcka [7]

Answer:

y-9= -4(x+1)

Step-by-step explanation:

First, you should know what the format for point slope form is. y-y1=m(x-x1). Now, fill in the points to the x1 and y1 variables. It doesn't matter what ordered pair you use. If the number you fill in is negative, for example, -1, change it to a positive 1. If you're plugging in a positive number such as 9, it becomes -9. Now, it may look like this: y-9=m(x+1). However, you still need to find slope. You can use the expression y-y1/x-x1. 9-1=8. -1-1= -2. So, your slope is 8/-2. However, you can simplify this to -4. Now, plug in -4 to your equation to have your final answer: y-9=-4(x+1).

3 0
3 years ago
Someone please help me please
sertanlavr [38]

Answer:

D.   (x - 2)(x + 2)

Step-by-step explanation:

Look at the graph, when y = 0, x = - 2 and x = 2, vertex = -4

OK so x = -2 means x + 2 = 0

and x = 2, means x - 2 = 0

So

answer :D.  (x - 2)(x + 2)

7 0
2 years ago
The height of a cone-shaped statue is 9 ft, and the diameter is 12 ft.
Pepsi [2]
I hope this helps you



Volume of cone =1/3.pi.r^2.h



Volume of cone =1/3.3,14.6^2.9



Volume of cone =339.12
3 0
3 years ago
Read 2 more answers
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