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skelet666 [1.2K]
3 years ago
15

Any tips on negative numbers? Thanks!!

Mathematics
1 answer:
mote1985 [20]3 years ago
5 0
They aren’t positive !
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If f(x) = 5x − 3, which expression represents its inverse function?
tangare [24]

Answer:

f ^{-1}(x)=\frac{x+3}{5}

Step-by-step explanation:

To find the inverse of a function f (x) follow the steps below:

1) Make y = f (x)

y= 5x - 3

2) Solve for the variable x

y+3= 5x - 3+3

y+3= 5x

x=\frac{y+3}{5}

3) Exchange the variable x with the variable y

y=\frac{x+3}{5}

4) Make y = f ^{-1}(x)

f ^{-1}(x)=\frac{x+3}{5}

Finally, the inverse of the function f (x) is: f ^{-1}(x)=\frac{x+3}{5}

5 0
3 years ago
Solve x2-14x+21=0 by completing the square
ankoles [38]
x^2-14x+21=0\\\\x^2-2x\cdot7+7^2-7^2+21=0\\\\(x-7)^2-49+21=0\\\\(x-7)^2-28=0\\\\(x-7)^2=28\iff x-7=-\sqrt{28}\ \vee\ x-7=\sqrt{28}\\\\x=7-\sqrt{4\cdot7}\ \vee\ x=7+\sqrt{4\cdot7}\\\\x=7-2\sqrt7\ \vee\ x=7+2\sqrt7
4 0
3 years ago
39.7 + b + 30.1 = 165.288
Vanyuwa [196]

Answer:

p/u/s/s/y/i/o

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
115 is what percent of 345
tino4ka555 [31]
To answer this, you need to put 115 and 345 into a fraction.

115/345

Reduce it, which results in the fraction 1/3.

Now you have to convert 1/3 to a decimal: .33333

The 3 will continue to repeat. To convert a decimal to a percent you simply need to move the decimal point two places to the right: 33.333

Simplified, your final answer (with a fraction) is 33 1/3%
Or rounded to the nearest tenth of a percent, 33.3%
8 0
3 years ago
Help please. and if you can, explain.
Vladimir [108]

Answer:

2400

Step-by-step explanation:

8 0
3 years ago
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