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Goryan [66]
3 years ago
13

Help plz I don't understand

Mathematics
1 answer:
IrinaVladis [17]3 years ago
7 0

Answer:

(-9,-3.4)

Step-by-step explanation:

By adding 2.1x and subtracting 5.3 from the top equation, it will end up as 2.1x=4y-5.3

By adding 5.5y to the bottom equation, it will end up as 2.1x=5.5y-0.2.

By the equal valuesmethod, they are equal: 5.5y-0.2=4y-5.3

5.5y+5.1=4y

5.1=-1.5y

y=-3.4; this gets us our y-coordinate.

To get the x-coordinate, you plug the value for y back into the original equation.

-2.1x-4y=5.3

-2.1x-4(-3.4)=5.3

-2.1x-13.6=5.3

-2.1x=18.9

x=-9

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Please help need answer asp
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Since it is a 45-45-90 right triangle, the formula is:
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Since you know hypotenuse = 9sqrt2 the leg has to be 9
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3 years ago
Ron's property tax is $615.33 and is due April 5. He does not pay until July 19. The country adds a penalty of 8.4% simple inter
dolphi86 [110]
Number of days that attracted penalty is from April 5 to July 19 which is 105 days.

Thus the amount of simple interest attracted by Ron is given by:

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3 years ago
The function f has first derivative given by f'(x)=(x)^1/2/1+x+x^3. What is the x-coordinate of the inflection point of the grap
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Inflection at f'(x) = 0 
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x^1/2 / (1 + x + x^3) = 0 </span>

<span>The x coordinate is x = 0 </span>
<span>
or "C" from your choices there. </span>

<span>The simplest way is to notice that this happens when x = 0. The reason is you got: </span>
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x^1/2 / (some expression) </span>
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at x = 0 the numerator is 0 so unless the denominator is also 0 the result is 0. </span>
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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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3 years ago
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belka [17]
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3 years ago
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Answer:

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