3 years ago

9.

Mathematics

1 answer:

mote1985 [20]3 years ago

3 0

The answer should be A

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Sold the equation. Round to the nearest hundredth. 17 · <img src="https://tex.z-dn.net/?f=1.8%5E%7B-x%2B7%7D%20%3D%205"

svetlana [45]

Answer:

Final answer is approx x=4.26.

Step-by-step explanation:

Given equation is $1.8^{-x+7} = 5$

Now we need to solve equation $1.8^{-x+7} = 5$ and round to the nearest hundredth.

$1.8^{-x+7} = 5$

$\log(1.8^{-x+7}) = \log(5)$

$(-x+7)\log(1.8) = \log(5)$

$(-x+7) = \frac{\log(5)}{\log(1.8)}$

$(-x+7) = \frac{0.698970004336}{0.255272505103}$

$-x+7 = 2.73813274192$

$-x = 2.73813274192-7$

$-x =−4.26186725808$

$x =4.26186725808$

Round to the nearest hundredth.

Hence final answer is approx x=4.26.

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3 years ago

2x -2 = -200 whats the value of x

Elden [556K]

Answer:

Step-by-step explanation:

2x - 2 = - 200

Bringing like terms on one side

2x = - 200 + 2 = - 198

2x = - 198

x = - 198/2 = - 99

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3 years ago

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The table represents the function f(x) = 2x+1.

Serhud [2]

Answer:

Step-by-step explanation:

Plug in x = 2 into the equation 2x + 1

2x + 1

2 * 2 + 1

4 + 1

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3 years ago

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What is 3x + 2 (x-y) ?

AfilCa [17]

Answer:

5x-2y

Step-by-step explanation: u multiply

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What is 467,000 in scientific notation?

Ne4ueva [31]

Answer:

4.67^5 the 5 is for the number of places we moved.

Step-by-step explanation:

We have to move places because according the law of scientific notation your number has to be from 1-9

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4 years ago