MATHEMATICS COLLEGE

What is -a ^-2 if a=-5

A. -25
B.25
C.-1/25
D.1/25​
what is -a ^-2 if a=-5 A. -25 B.25 C.-1/25 - 1

Answers

Answer 1
Answer:

Answer:

-1/25

Step-by-step explanation:

- (a)^-2

Let a = -5

- (-5)^-2

-1/(-5)^2

-1/25
Answer 2
Answer:

Answer:

  -1/25

Step-by-step explanation:

-(-5)^-2 = -1/(-5)^2 = -1/25

Related Questions

A school has 5000 students. There are 1500 freshman, 1500 sophomores, 1000 juniors, and 1000 seniors. At 8:00 AM, all students are in class; there are 200 classes that each have 25 students. The administration wants to give a survey asking the students about their favorite classes. They wish to poll 100 students. The entire student body is assigned a number, and then a random number generator is used to select 100 of those numbers at random. The students matching those numbers are given the survey. What sampling method was used?
The height of a cylinder is decreasing at a constant rate of 1 centimeters per minute, and the volume is decreasing at a rate of 2341 cubic centimeters per minute. At the instant when the height of the cylinder is 1010 centimeters and the volume is 577 cubic centimeters, what is the rate of change of the radius? The volume of a cylinder can be found with the equation V=pi r^2 h. Round your answer to three decimal places.
A triangle with vertices (-2,3), (5,4), and (-1,-1) is translated using the rule (x,y) (x-3, y+4) what are the coordinates of the image?
You and a group of friends are going to a five-day outdoor music festival during spring break. You hope it does not rain during the festival, but the weather forecast says there is a 15% chance of rain on the first day, a 10% chance of rain on the second day, a 20% chance of rain on the third day, a 20% chance of rain on the fourth day, and a 60% chance of rain on the fifth day. Assume these probabilities are independent of whether it rained on the previous day or not. What is the probability that it does not rain during the entire festival
99 POINT PROJECT -- ACTUALLY DO IT, DONT TELL ME HOW! 99 POINTS.Search your home for a rectangular prism. Some examples are a cereal box, a CD case, or a coffee table. Measure your prism using appropriate units, such as inches, centimeters, or feet. Complete the following. Show all work for calculations. List the dimensions of your box. Be sure to include the units (in, cm, ft, etc.). Describe the shape of the cross section when the box is cut parallel to the base. What is the surface area of the box? What is the surface area of the box if it is scaled up by a factor of 10? What is the volume of the box? What is the volume of the box if it is scaled down by a factor of 1/10?

Write this small number in standard form. 0.00078

Answers

Answer:

78/100000

Hope it helps you
7.8^ -4 is scientific notation

The number of potholes on 30 randomly selected 1 mile stretch of highways in the City of Chicago is given below 2, 7, 4, 7, 2, 7, 2, 2, 2, 3, 4, 3, 1, 2, 3, 2, 1, 4, 2, 2, 5, 2, 3, 4, 4, 1, 7, 6, 3, 5 (a) Complete the frequency distribution for the data. Make sure to enter your answers for the relative frequency as decimals, rounded to the nearest tenth.

Answers

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

2, 7, 4, 7, 2, 7, 2, 2, 2, 3, 4, 3, 1, 2, 3, 2, 1, 4, 2, 2, 5, 2, 3, 4, 4, 1, 7, 6, 3, 5

Value __ Frequency ___ relative frequency

1 ___ 3 ______ 3/30 ____ 0.1

2 __ 10 ______ 10/30 ___ 0.3

3 __ 5 _______ 5/30____0.2

4 __ 5 ________ 5 / 30 __0.2

5 __ 2 _________ 2/30 __ 0.1

6 __ 1 _________ 1/30 ___0.0

7 __ 4 ________ 4/30 ___0.1

Kindly note that relative frequencies were rounded to the nearest tenth.

Suppose a professor splits their class into two groups: students whose last names begin with A-K and students whose last names begin with L-Z. If p1 and p2 represent the proportion of students who have an iPhone by last name, would you be surprised if p1 did not exactly equal p2? If we conclude that the first initial of a student's last name is NOT related to whether the person owns an iPhone, what assumption are we making about the relationship between these two variables?

Answers

a) Even if the distribution of iPhones by last name is completely uniform in the population generally, there is no reason to believe that the proportions in the sample represented by the class will be identical.
  I would not be surprised to see p1 ≠ p2.

b) Saying the variables are not related is the same as saying the variables are independent.

The American Community Survey is an ongoing survey that provides data every year to give communities the current information they need to plan investments and services. The 2010 American Community Survey estimates that 14.6% of Americans live below the poverty line, 20.7% speak a language other than English (foreign language) at home, and 4.2% fall into both categories. a. Draw a Venn diagram summarizing the variables and their associated probabilities
b. What percent of Americans live below the poverty line and only speak English at home?
c. What percent of Americans live below the poverty line or speak a foreign language at home?

Answers

Answer:

b. 10.4

c.  26.9

Step-by-step explanation:

Let the universal set U = 100% which is the total no of people in the American community

Let A = 14.6% which is the total no of people living below poverty line

Let B = 20.7% which is the total no of people speaking foreign Language

C = 4.2% no of people who both speak foreign language and live below poverty line

X = no of people who neither live below poverty line nor speak foreign language

P (A) = 14.6%

P (B) = 20.7%

P (C) = P (A ∩ B) = 4.2%

P (A – C) = P (A ∩ U) = 14.6 – 4.2 = 10.4%

P (B – C) = P (B ∩ U) = 20.7 – 4.2 = 16.5%

P (X) = P (A ᴜ B) c =100 – (10.4 + 4.2 + 16.5) = 68.9%

a. The venn diagram is as shown above

b. Percent of Americans who live below poverty line and Speak English at home(minus foreign lang speakers living below poverty line) that is A only

= A – C

= 14.6 – 4.2

= 10.4%

c. Percentage of Americans Living below poverty line or Speaking foreign language

= A only + B only

A only = A – C ( People living below poverty line only)

= 14.6 -4.2

= 10.4%

B only = B – C ( people speaking foreign languages only)

= 20.7 – 4.2

= 16.5%

Hence

A only + B only = 10.4 + 16.5 = 26.9%

Olivia picked 482 apples from the orchard's largest apple tree. She divided the apples evenly into 4 baskets. How many apples are in each basket? How many are left over?

Answers

Answer:

120 with 4 left

Step-by-step explanation:

482 divided by 4 is 120.5. so you throw 120 apples in each basket and you have 2 left.

Final answer:

Olivia divided the 482 apples she picked from the orchard's largest apple tree evenly into 4 baskets. Each basket contains 120 apples and there are 2 apples left over.

Explanation:

Total apples picked = 482

To determine the number of apples in each basket, we need to divide the total number of apples picked by Olivia, which is 482, by the number of baskets, which is 4.

Using division, 482 divided by 4 equals 120 remainder 2. Therefore, each basket contains 120 apples and there are 2 apples left over.

Learn more about Division here:

brainly.com/question/34253396

#SPJ3

2 PointsThese dot plots show the lengths (in feet) from a sample of crocodiles and

alligators

Crocodi

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Alligator

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Length

What are the differences between the centers and spreads of these

distributions?

Select two choices: one for the centers and one for the spreads

D A Centers: The crocodiles have a lower median length than the

alligators

B. Centers: The crocodiles have a greater median length than the

alligators

c. Spreads: The lengths of the alligators are more spread out

D. Spreads. The lengths of the crocodiles are more spread out

PREVIOUS

SEO

Answers

Answer:

(B) Centers: The crocodiles have a greater median length than the alligators

(C) Spreads: The lengths of the alligators are more spread out

Step-by-step explanation:

The question is incomplete without the diagram. Find attached the diagram used in solving the question

Centers: this is the median of the distribution

Spread: this is the variation of the data distribution. The range can be used to find the spread. If the range is large, the spread is larger and If the range is small, the spread is smaller.

Range = highest value - lowest value

From the diagram:

Median of crocodile = 17

Median of the alligator = 9

Therefore, for Centers: The crocodiles have a greater median length than the alligators (option B)

Spread for crocodile data = from 15 to 19

Range = 19-15 = 4

Spread for alligator data = from 7 to 15

Range = 15-7 = 8

For Spreads: The lengths of the alligators are more spread out.

Answer: b and c

Step-by-step explanation:
Other Questions
Classify the following triangle. Check all that apply
-6 is a solution forTrueFalse
James is 10 feet below sea level if he increases his elevation by 30 feet what is his location?
What sample size, including the 20 observations in the initial study, would be necessary to have a confidence of 95.44 percent that the observed time was within 4 percent of the true value?