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Leona [35]
3 years ago
5

How do you determine whether to use substitution or elimination. give an example of a system that you would solve using each met

hod?
Mathematics
1 answer:
nadezda [96]3 years ago
3 0
You determine which one to use by seeing which one would be easier

elimination: 5x + 7y = 2
                  -5x + 6y = 6

substitution: y = 9x + 5
                  2y = 7x + 2
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33x + 55 > 17 solution
Ghella [55]

Answer:

Step-by-step explanation:

33x > -38

x > -38/33

6 0
3 years ago
Stephanie inherited $40,000. She wants to put some of the money in a certificate of deposit that pays 2.1% interest per year and
Diano4ka-milaya [45]

$10000 in certificate of deposit

$30000 in mutual funds

Step-by-step explanation:

Step 1:

Total amount Stephanie has inherited = $40000

Let x be the amount she should put in certificate of deposit.

So 40000-x is the amount to be deposited in mutual funds

Step 2:

Total interest she wants to earn is 5.4% of $40000 = 5.4*40000/100 = 2160

Interest from certificate of deposit  = 2.1% of x = 2.1 * x /100

Interest from mutual funds is 6.5% = 6.5(40000-x)/100

Sum of the interest from both these equals 2160

so 2.1 * x /100 + 6.5(40000-x)/100 = 2160

=> 0.021x/100 + 2600-0.065x = 2160

=> -0.044x = -440 => x= 10000

Step 3 :

Hence Stephaine should invest $10000 in certificate of deposit and (40000-10000) = $30000 in mutual funds

7 0
3 years ago
What is the value of n in the proportion below?
Illusion [34]
The answer would be 16
8 0
3 years ago
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Pls pls help, thank you <3
Reika [66]

Answer:

  (x -1)² +(y -4)² = 25

Step-by-step explanation:

The equation of a circle in standard form is ...

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The graph shows your circle has its center at (1, 4) and its radius is 5. Then the equation is ...

  (x -1)² +(y -4)² = 25

3 0
3 years ago
What is the value of log5 125 ? 3 5 15 25
Rom4ik [11]
3.because I found it. hahaha
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3 years ago
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