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igomit [66]
3 years ago
7

When is substitution a useful method for solving systems of equations?

Mathematics
1 answer:
Georgia [21]3 years ago
6 0
When trying to solve a system without graphing.
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submarine A is currently at a depth of 432 feet below sea level Submarine B is onky at a depth of 3/4 as much as Submarine A. Wh
alexandr402 [8]
Well you could multiply 432 by 0.75, or you can divide it by 4 and then multiply it by 3. Either way your answer is 324.
8 0
3 years ago
How to solve 0=4+n/5?
Alchen [17]
Let's solve your equation step-by-step.
<span>0=<span>4+<span>n/5
</span></span></span>Step 1: Simplify both sides of the equation.<span>0=<span><span><span>1/5</span>n</span>+4
</span></span>Step 2: Flip the equation.<span><span><span><span>1/5</span>n</span>+4</span>=0
</span>Step 3: Subtract 4 from both sides.<span><span><span><span><span>1/5</span>n</span>+4</span>−4</span>=<span>0−4
</span></span><span><span><span>1/5</span>n</span>=<span>−4
</span></span>Step 4: Divide both sides by 1/5.<span><span><span><span>1/5</span>n/</span><span>1/5 </span></span>=<span><span>−4/</span><span>15</span></span></span><span>n=<span>−20
</span></span>Answer:<span>n=<span>−<span>20</span></span></span>
8 0
3 years ago
Read 2 more answers
What are two consecutive numbers whose cubes differ by 331
Vinvika [58]
Jsnsjsjjsjsjsjsjsjsjsjsj hsjsjsjsj
5 0
3 years ago
Explain it so I can better understand it
lorasvet [3.4K]
The question is essentially asking who's equation works better (Part A) and to explain why (Part B). 
Marcella is suggesting the equation 6r + 12 = 683.88 
Julia is suggesting the equation 6(r + 12) = 683.88 

Six people are on the trip.
It is $12 PER person to rent a floatation device. 
The total cost of the trip was $683.88.

Hope I've helped!


6 0
3 years ago
What is the value of x?<br> sin(4x-10)°=cos(40-x)°
ohaa [14]

Answer:

If sin(4x–10)° = cos(40-x)°, then  x = 20

Step-by-step explanation:

7 0
3 years ago
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