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3 years ago

9

Which value is a solution of the equation 5 - 4x=-3

1 answer:

k0ka [10]3 years ago

6 0

5-4x=-3
-4x=-8
x=2
The answer to this was received after following the simple steps in PEMDAS or GEMDAS. <span />

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When you subtract one negative integer from another will your answer be greater than or less than the integer you started with

MatroZZZ [7]

Subtracting a negative integer is the same as adding a positive integer. Adding a positive integer to any number always makes the answer larger than the original number. Therefore, if you subtract one negative integer from another your answer will be always be *greater* than the integer you started with.

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3 years ago

After 3 minutes, a submarine had descended to −320 feet. After 8 minutes, the submarine had descended to −420 feet. Assuming a l

LiRa [457]

Answer:

$d(t) = -20t - 260$

Step-by-step explanation:

The depth function is:

$d(t) = mt + b$

After 3 minutes, a submarine had descended to −320 feet.

This means that $d(3) = -320$ . So

$d(t) = mt + b$

$-320 = 3m + b$

After 8 minutes, the submarine had descended to −420 feet.

This means that $d(8) = -420$ . So

$d(t) = mt + b$

$-420 = 8m + b$

From the first equation:

$b = -320 - 3m$

So

$-420 = 8m + b$

$-420 = 8m - 320 - 3m$

$5m = -100$

$m = \frac{-100}{5}$

$m = -20$

And

$b = -320 - 3*(-20) = -260$

So

$d(t) = -20t - 260$

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3 years ago

A zookeeper measured the length of 5 snakes at the zoo he recorded the results in a table. what is the main snake length?

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I'm 90% sure the answer is twenty-six cm.

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Step-by-step explanation:

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