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GuDViN [60]
3 years ago
11

Is the order pair (3,-4) a solution of the system of linear equations x+y=1 and -6x-3y=-3

Mathematics
1 answer:
4vir4ik [10]3 years ago
7 0

↝ A single coordinate point must make both equations true in order for the point to be a solution.

Substitute x = 3 and y = -4 in both equations.

3-4=1\\-1=1

The equation isn't true. Therefore, this isn't the solution for the system.

-6(3)-3(-4)=-3\\-18+12=-3\\-6=-3

The equation isn't true for this one.

Conclusion ↝ The (3,-4) isn't the solution.

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3 years ago
Determine the most precise name for the quadrilateral,
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Step-by-step explanation:

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4 0
3 years ago
What is the value of f(-4)
maria [59]
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8 0
4 years ago
Zene deposited $50 in a savings account earning 5% interest, compounded annually. To thenearest cent, how much will he have in 3
JulsSmile [24]

Answer:

\$57.88  

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=3\ years\\ P=\$50\\ r=5\%=5/100=0.05\\n=1  

substitute in the formula above

A=50(1+\frac{0.05}{1})^{1*3}  

A=50(1.05)^{3}  

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6 0
4 years ago
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