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
harkovskaia [24]
2 years ago
8

Erin is flying a kite. She knows that 260 feet of the kite

Mathematics
1 answer:
lianna [129]2 years ago
7 0

Answer:

100 ft high

Step-by-step explanation:

We know that Erin, the kite, and her friend create a right triangle since the friend is standing directly under the kite and in front of Erin.  

Thus, we can use the Pythagorean theorem to find the height of the kite.

We can let the side the distance be at represents Erin and the kite's distance be EK (aka the hypotenuse), the side that represents Erin and her friend's distance be EF and the side that represents the kite and the friend's distance be KF.

The theorem says that a^2 + b^2 = c^2, where a and b are the two shortest sides and c is the hypotenuse.

We already have the measure of the hypotenuse (260 ft) and one of the shorter sides (240), so we have:

KF^2+240^2=260^2\\KF^2+57600=67600\\KF^2=10000\\\sqrt{(KF^2=10000)} \\KF=100

You might be interested in
Why is 12 a composite number
Gwar [14]
Because it's a positive number that can be gained by multiplying two smaller positive numbers.
5 0
3 years ago
Read 2 more answers
In a random sample of 7 residents of the state of Maine, the mean waste recycled per person per day was 1.4 pounds with a standa
ivolga24 [154]

Answer:

a) The 95% confidence interval for the mean waste recycled per person per day for the population of Maine is between 1.19 and 1.61 pounds.

b) T_c = 2.4469

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 7 - 1 = 6

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 6 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.4469, and the answer to question b is T_c = 2.4469

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.4469\frac{0.23}{\sqrt{7}} = 0.21

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 1.4 - 0.21 = 1.19 pounds.

The upper end of the interval is the sample mean added to M. So it is 1.4 + 0.21 = 1.61 pounds.

The 95% confidence interval for the mean waste recycled per person per day for the population of Maine is between 1.19 and 1.61 pounds.

7 0
3 years ago
At Kennedy High School, the probability that a student takes Technology and Spanish is
Ludmilka [50]

0.13

Explanation:

P(B|A) = P(A and B) / P(B)

P(spanish|Technology) =  0.087/0.68 = 0.1279 ~ 0.13

7 0
3 years ago
A plane can be determined by ___ points, that are not on the same line.
MrRissso [65]

Answer:

3

Step-by-step explanation:

3 points are not colinear will define a plane

6 0
3 years ago
Rewrite these expressions using words: 3/4x(2 2/5-5/6)
myrzilka [38]

Answer:

Step by atep explaination :

  • \frac{3}{4}    means three₋fourth
  • 2\frac{2}{5}  means two and two₋fifths
  • \frac{5}{6}    means five₋sixth

An algebraic expression in words can be written as

A numbers three₋fourth times the subtractions of five₋sixths from two and two₋fifths

5 0
4 years ago
Other questions:
  • Polygon ABCD slides 4 units left and 3 units up on the coordinate plane. If the original measure of angle A was 75 degrees, what
    11·2 answers
  • Round to the nearest integer √10
    7·1 answer
  • Choose the correct simplification of the expression (−2x + 10y)(4x − 6y).
    9·1 answer
  • Slope intercept from two points (-10,3) and (-8,-8)
    13·1 answer
  • Help!!! I don’t get this
    14·2 answers
  • Write the equation of a circle with center M(2,6) and a radius of 4
    5·1 answer
  • PLEASE HELP MEEEEEE I WILL MARK BRAINLIEST
    6·1 answer
  • At an appliance store, the price of a refrigerator is marked up 25% to $406.25.
    7·2 answers
  • A city population which was initially 15,500 has been decreasing 3% a year. What will the population be after five years? Round
    12·1 answer
  • If we want to know if diagonals or sides are congruent we would use the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!