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MaRussiya [10]
3 years ago
10

What is the value of the expression 3^-4?

Mathematics
1 answer:
DerKrebs [107]3 years ago
5 0
81 Because 3•3•3•3= 81 then I added the negative sign. but I guess you should do -3•-3=9 then again -3•-3=9. then 9•9 equals 81.
You might be interested in
If the radius is 18 cm and the angle at centre of circle is 120° then the
PolarNik [594]

The area of a sector is 339.336 cm²

The area of a sector is defined to be as the region of space bounded by a boundary from the center of the circle.

It can be determined by using the formula:

\mathbf{A = \dfrac{\theta }{360}\times \pi r^2 }

Given that;

  • Radius r = 18 cm
  • Angle θ =  120°

Then. the area of the sector can be calculated as:

\mathbf{A = \dfrac{120}{360}\times \pi (18)^2 }

\mathbf{A = \dfrac{1}{3}\times 3.142 \times 324 }

A = 339.336 cm²

Learn more about the area of a sector here:

brainly.com/question/7512468?referrer=searchResults

4 0
3 years ago
Chelsea completes 35 math problems in 7 min.
Andru [333]
Answer = 5 problems per minute

Because you do the number of problems divided by the minutes eg 35/7 = 5
3 0
4 years ago
Find the common ratio of the geometric sequence.
Kay [80]

Answer:

The common ratio is \frac{1}{x^4}

Step-by-step explanation:

Geometric sequence:A geometric sequence is a sequence in which the ratio of any term to the preceding term of that term is always constant.

Common ratio: The ratio of any term to the  preceding term of that term.

The n^{th} term of a geometric sequence is represented by  a_n=ar^{n-1}.

The 1^{st} term of the sequence = a.

The sum of first n term is

S_n=\frac{a(1-r^n)}{1-r}

The common ratio = r.

Given geometric sequence,

\frac{1}{x^{10}} , \frac{1}{x^{14}}, \frac{1}{x^{18}},\frac{1}{x^{22}} ........

The common ratio is

=\frac{\textrm{second term}}{\textrm{first term}}

=\frac{\frac{1}{x^{14}}}{\frac{1}{x^{10}}}

=\frac{x^{10}}{x^{14}}

=\frac{1}{x^4}

6 0
4 years ago
PLEASE HELP!!!!
OlgaM077 [116]

Answer: she will make $232.05 in 4 weeks.

Step-by-step explanation:

Since her profit is increasing by 10% each week, then the rate at which it is increasing is in geometric progression. The common ratio, r would be 110/100 = 1.1

We would apply the formula for determining the sum of n terms of a geometric progression which is expressed as

Sn = a(r^n - 1)/(r - 1)

Where

a represents the first term of the sequence.

r represents the common ratio.

n represents the number of terms(number of weeks)

From the information given,

a = 50

r = 1.1

n = 4 weeks

Therefore,

S4 = 50(1.1^4 - 1)/(1.1 - 1)

S4 = 50(1.1^4 - 1)/0.1

S4 = $232.05

5 0
4 years ago
What is 56 to 8 as a unit rate
Harman [31]

Answer: I think it's 7 mph

Step-by-step explanation: If this helped, please mark brainliest! :)

3 0
2 years ago
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