1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
egoroff_w [7]
3 years ago
12

Anyone know this one I’m kinda bad at math lol

Mathematics
2 answers:
swat323 years ago
8 0

Answer:

1/ 9^5

Step-by-step explanation:

When dividing exponents with the same base, subtract the exponents

9^2 / 9^7

9 ^ (2-7)

9^ -5

We know that a^ -b = 1/ a^b

1/ 9^5

jenyasd209 [6]3 years ago
8 0

You can rewrite it as:  (using the law of dividing exponents)

9^(2-7) = 9^(-5) = 1/(9^5)

The fourth one

You might be interested in
What expression gives the height, h, of the triangle?
Mumz [18]

Answer: Your answer is C.

Step-by-step explanation: I'm taking this test rn and it's C. K12 anyone?

5 0
3 years ago
Read 2 more answers
After Kwan spent $5 of the money he earned for mowing lawns, he had $15 left. Which equation represents how to find the amount K
Mamont248 [21]
The answer is C. I think I'm not sure though
5 0
3 years ago
Read 2 more answers
a restaurant customer left a $1.95 as a tip. the tax was 5%, and the tip was 15% of the after-tax cost. which information is not
Naily [24]

Given :

a restaurant customer left a $1.95 as a tip.

The tax = 5%

the tip was 15% of the after-tax cost

So, the information that not needed is the tax

Let the total bill = x

so, 15% of x = 1.95

\begin{gathered} 0.15\cdot x=1.95 \\  \\ x=\frac{1.95}{0.15}=13 \end{gathered}

so, the total bill = $13

7 0
1 year ago
Some track and field athletes feel that they are more likely to win a race if they start on the inside lane. The data above show
ivolga24 [154]

Answer:

D.]

Step-by-step explanation:

We will find the standard deviation and variance:

Variance= Ex^{2}-[[E(x)]^{2}

 E[x] = 3.462

E[{x}^2]= 31.86

Var(x)= 31.86-(3.462)^2 = 28.4

Standard deviation = \sqrt{Var(x)}

                               = \sqrt{28.4}

                               = 5.833 = 6(aproximately)

Therefore, the chances of winning are equal in each lane.

4 0
3 years ago
Read 2 more answers
Evaluate the factorial expression. <br> 688!/687!
NNADVOKAT [17]

688!/687!

(688*687!)/687!

688

7 0
4 years ago
Other questions:
  • Write an equation<br> Slope:0<br> Y-intercept:9
    12·1 answer
  • Timothy recorded the monthly change in his savings account balance, in dollars, for 8 months. Month January February March April
    9·2 answers
  • Which statement will prove that PQS is similar to JKL?
    9·1 answer
  • You lend $240 to your friend. He pays you back $30 in interest in one year. What interest
    9·1 answer
  • Lindsay has eight more stickers than Whitney. W represents the number of stickers Whitney had. Which expression represents the n
    11·2 answers
  • What is the difference between the mean and the median of the data set?<br> (22,8 10,18,12, 20)
    13·2 answers
  • at time t, in hours, a lake is covered with ice of thickness y cm, where y = .5 t^1.5 . if ice forms for 0 &lt;= t &lt;= 6, at w
    6·1 answer
  • How to solve a table graph using this coordinates (0x,-7y) (4x,9y) (5x,13y) (-10x,-47y<br> )
    13·1 answer
  • Which is the best estimate of 162% of 79? O 112 O 119 O 128 O 136​
    12·2 answers
  • The area of this polygon is 228 square meters
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!