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polet [3.4K]
3 years ago
15

12x+4y=1 6x-2y=3 substitution, elimination, or graphing ?

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
8 0

Answer:

y = -5/8

x = 7/24

Step-by-step explanation:

elimination

12x + 4y = 1 | ×1 |

6x - 2y = 3 | ×2 |

12x + 4y = 1

12x - 4y = 6

_________--

8y = -5

y = -5/8

elimination

12x + 4y = 1 | ×1 |

6x - 2y = 3 | ×2 |

12x + 4y = 1

12x - 4y = 6

_________+

24x = 7

x = 7/24

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C=-2

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3 years ago
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The best way to achieve significant increases in interest after all in a savings account is through?
Alekssandra [29.7K]

Answer: The answer is (d) Compounding.

Step-by-step explanation:  We are given four options out of we are to select the best way through which we can achieve significant increases in interest after all in a savings account.

Increases in principle and increases in time will not give the result, because we are talking about a fixed amount of money for a fixed time.

Also, increases in interest is not in our hand.

So, only we can do is compounding. Here, in same amount of money and time, the rate of interest will automatically increase.

Thus, the correct option is (d) Compounding.

4 0
3 years ago
(-3)(+4)=?<br> Can someone tell me the answer to this?
slava [35]

Answer:

-12, or 1 (see explanation)

Step-by-step explanation:

(-3)(+4)

Is the same as

4 * (-3)

which is

-12

Unless your problem is:

(-3) + 4

Then it is the same as

4 - 3

which is

1

5 0
3 years ago
A new museum had 7500 vistiors this year.the number of visitors is expected to grow by 5% each year. How many vistiors will be i
Bumek [7]

Answer:

9572 visitors

Step-by-step explanation:

This is exponential: y=aby=ab^x

a = initial value

b = growth rate

It will grow by 5% each year but also keep the same amount as last year (100% of last year's visitors)

a = 7500

b = 1.05

y = 7500(1.05)^x

Plug in x=5

9572.111719 = 9572 visitors

8 0
3 years ago
Solving with percent and percent problems
Marysya12 [62]
Well, if 0.4% was defected, then 99.6% of the parts are good, because 100-0.4 is 99.6. Multiply 99.6% with 54650, and you get 54431.4. You should round down, because you can't have parts of parts. So, 54431 parts were good.  
8 0
3 years ago
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