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2 years ago

Find the solution to the system of equations given below: x=-4 -5x-4y=16 PLS HELP

Mathematics

1 answer:

poizon [28]2 years ago

8 0

Answer:

Step-by-step explanation:

Since x=-4 plug in the -4 into the equation to find y,

-5(-4)-4y=16

20-4y=16 -20 -20 __________

-4y=-4

-4y/-4=-4/-4

___________

y=1

So now you found both x and y so plug in both now to check if both are correct.

-5(-4)-4(1)=16

20-4=16

16=16

So both y and x are correct.

Hope this helps!:)

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20 POINTS AND BRAINLIEST!! Write an exponential function in the form y=ab^x

Rudik [331]

Answer:

$y=13(4)^x$

Step-by-step explanation:

We have the exponential function of the form:

$y=ab^x$

And it goes through the points (0, 13) and (3, 832).

Hence, when we substitute in 0 for x, we should get 13 for y. Therefore:

$13=ab^0$

Since anything to the zeroth power is 1, this yields:

$a=13$

So, we determined that the value of a is 13.

So, our function is now:

$y=13b^x$

We will need to determine b. We know that y equals 832 when x is 3. Hence:

$832=13(b)^3$

Divide both sides by 13:

$b^3=64$

Take the cube root of both sides:

$b=4$

Hence, our b value is 4.

Therefore, our entire equation is:

$y=13(4)^x$

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3 years ago

17.83 rounded to the nearest tenth

garri49 [273]

The answer would be 17.8 hope this help you

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2 years ago

What 2 numbers multiply to -216 and add up to 6

Lena [83]

-12 and 18

hope this helps :)

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2 years ago

Read 2 more answers

Percent error Please Help

san4es73 [151]

Answer:

Step-by-step explanation:

Set up the problem with the numbers given to you

$\frac{13.3 - 13.6}{13.6}$ x 100

-0.022058823529412 x 100

-2.205882352941176

Don't forget that it's absolute value and that you round to the nearest percent

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