3 years ago

Use the linear combination method to solve this system of equations. What is the value of 3x+7y=3 X-7y=1

Mathematics

1 answer:

Allisa [31]3 years ago

4 0

Answer:

look at the picture shown

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Step-by-step explanation:

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Contact [7]

Find the equation of the inverse.

$y = {2}^{x + 5} - 6$

we have

$y=\mleft\{2\mright\}^{\mleft\{x+5\mright\}}-6$

step 1

Exchange the variables

x for y and y for x

$x=\{2\}^{\{y+5\}}-6$

step 2

Isolate the variable y

$(x+6)=2^{(y+5)}$

apply log both sides

$\begin{gathered} \log (x+6)=(y+5)\cdot\log (2) \\ y+5=\frac{\log (x+6)}{\log (2)} \\ \\ y=\frac{\log(x+6)}{\log(2)}-5 \end{gathered}$

step 3

Let

$f^{(-1)}(x)=y$

therefore

the inverse function is

$f^{(-1)}(x)=\frac{\log(x+6)}{\log(2)}-5$

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1 year ago

We have 2 cups of butter.we used 1/4cup, 1/2 cup, and 1/8 cup. How much will be left?

alina1380 [7]

Answer:

Step-by-step explanation:

2 cups=8/4 1/2=2/4 1/8=0.5/4

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Step-by-step explanation: that’s he correct answer delta math gave me AFTER I got it wrong

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