4 years ago

If 3^2×-1=81, what is the value of x?

Mathematics

2 answers:

Korolek [52]4 years ago

4 0

It wrong, 3^2 =9

9 x -1= -81.

it always negative put on it.

Lemur [1.5K]4 years ago

3 0

Hello :
<span>3^(2×-1)=81
</span>3^(2×-1) = 3^4
2x-1 =4
2x=5
x=5/2

You might be interested in

Need help please somebodt

Nostrana [21]

A≈21.46
First you find the area of the square

A=a^2 which is
=10^2
A=100

Then you find the area of the circle
A=πr^2
= π(5)^2
A≈78.54

Now you subtract the 78.54 from 100 to get 21.46

5 0

3 years ago

PLS HELP!! AS SOON AS POSSIBLE !!

Colt1911 [192]

23 .........................

3 0

3 years ago

hich function has a range of {y|y ≤ 5}? f(x) = (x – 4)2 + 5 f(x) = –(x – 4)2 + 5 f(x) = (x – 5)2 + 4 f(x) = –(x – 5)2 + 4

Brums [2.3K]

Answer:

$f(x)=-(x-4)^2+5$

Step-by-step explanation:

The function $f(x)=-(x-4)^2+5$ has the vertex at $(4,5)$ .

Since $a=-1\:$ , the graph of the function is a maximum graph.

The highest y-value is the y-coordinate of the vertex which is 5.

Therefore the range is { $y|y\le 5$ }

Therefore the correct answer is B.

6 0

3 years ago

Pls, can someone help me with this problem?

ExtremeBDS [4]

Answer:

$0.\overline{33}$

Step-by-step explanation:

If you divide number 1 by number 3, you will notice that number 3 will constantly repeat at the decimal part.

So, the answer is $0.\overline{33}$ .

5 0

2 years ago

Could someone help me with this?

MaRussiya [10]

Answer: o well i dont really knwo

Step-by-step explanation:

7 0

3 years ago