Answer:
70%
Step-by-step explanation:
The fraction of the game won is 14/20
Percent means out of 100
14/20 * 5/5 = 70/100
The percent is 70%
A park ranger at a large national park wants to estimate the mean diameter of all the aspen trees in the park. The park ranger believes that due to environmental changes, the aspen trees are not growing as large as they were in 1975.
Answer:
(a) 0.15866
(b) Clustered, with two peaks
(c) Point estimate is 6.3 inches
Margin of error is 0.7 inches
(d) Yes
(e) Stratified sampling method
Step-by-step explanation:
(a) The given information are as follows
Mean diameter of Aspen trees, μ = 8 inches
Standard deviation, σ = 2.5 inches
[tex]z = \frac{x - \mu}{\sigma} = \frac{5.5 - 8 }{2.5} = -1[/tex]
Therefore;
p(x < 5.5) = p(z < -1)
From the z score table, we have p = 0.15866
Therefore, the probability that a randomly selected aspen tree in this park in 1975 would have a diameter less than 5.5 inches = 0.15866
(b) The distribution of the Aspen trees can be described as clustered and having two peaks around 9.25 inches and 5.25 inches
(c) The point estimate is 5.6 + (7.0 - 5.6)/2 = 6.3
The margin of error = (7.0 - 5.6)/2 = 0.7 inches
(d) Yes, because the 8 inches is outside the range
(e) Stratified sampling method
Here, the Aspen trees are separated into the highland and lowland samples such that the measurement required will be representative of both highlands park and lowlands park.
Ms. Lang lives in Lansing, Michigan. Last year, she made 4 round trips to Chicago, Illinois (a distance of 218 miles each way) and 6 round trips to Louisville, Kentucky (a distance of 364 miles each way). How many more miles did she travel in her trips to Louisville than in her trips to Chicago?
Answer:
1312 miles
Step-by-step explanation:
To solve this, we simply need to subtract the distance she traveled in her trips to Chicago from the distance she traveled in her trips to Louisville.
She made 4 round trips to Chicago, Illinois. Each of the trips is a distance of 218 miles. This means that the total distance she traveled is:
4 * 218 = 872 miles
She made 6 round trips to Louisville, Kentucky/ Each of the trips is a distance of 364 miles. This means that the total distance she traveled is:
6 * 364 = 2184 miles
Therefore, the difference between the distances she traveled is:
2184 - 872 = 1312 miles
She traveled 1312 miles more in her trips to Louisville than in her trips to Chicago.
5. An airplane 30,000 feet above the ground begins to descend at a
rate of 2,000 feet per minute. Choose an equation to model this
situation.
A y = 30,000 – 2,000x
B
y = 30,000x - 2,000
Cy= 30,000 + 2,000x
D y = 30,000x + 2,000
Answer:
A
Step-by-step explanation:
If the airplane is 30,000 feet above the air and descends 2,000 feet it's going down 2,000 feet per minute and cause we don't know how many minutes he was going down we put that as x. and multiply 2,000 for what ever x is.
Jeffery surveyed 50 randomly selected workers at a factory. He collected data about the individual output of a worker on an average day. The results are shown using the box-and-whisker plot. What percent of workers have output more than 70 units?
Answer:
the answer is 30% of the workers have output more than 70 units.
Step-by-step explanation:
Answer: I believe the answer is 25%.
My sister baked me a cake. We bought a litre of milk and went to town - we almost ate the whole cake! In the end my sister and I ate 5/7 of the cake. If the remainder of the cake was divided among three other friends (not including me and my sister) how much would each friend receive?
Answer:
2/21
Step-by-step explanation:
2/7 ÷3
sorry if wrong
2/7 * 1/3
2/21
Answer:
2/21 per friend
Step-by-step explanation:
A whole cake is 1 or as a fraction 7/7
5/7 of the cake was eaten
7/7 - 5/7 = 2/7
This was divided by 3 friends
2/7 ÷3
Copy dot flip
2/7 * 1/3
2/21
Write the ratio in lowest terms:
7-1/2 inches to 3-1/3 inches
Answer:
9:4
Step-by-step explanation:
I believe you meant:
7 1/2 in
-------------
3 1/3 in
Rewriting both mixed numbers as improper fractions, we get:
15
------
2
==========
10
-------
3
Remember: to divide by a fraction (such as 10/3 here), invert the divisor fraction and multiply instead:
15 3 (3)(3)
------- * ------ = --------- = 9/4 or 9:4 (this is a ratio expressed in lowest terms)
2 10 (2)(2)
Can somebody help me?
Answer:
35/98
Step-by-step explanation:
What is the solution to 34x + 95 = 3(14x + 9)?
Answer:
Step-by-step explanation:
What is the answer to angle A? And do you mind to explain how
Answer:
45 degrees
Step-by-step explanation:
The sum of the angles of a triangle always adds up to 180.
10x + 8x + 5 + 85 = 180
Simplify by combining like terms.
18x + 90 = 180
Subtract 90 from both sides.
18x = 90
Divide both sides by 18.
x = 5 degrees
But the question didn't ask for x, it asked for angle A. So plug back in.
A = 8x + 5
A = 8(5) + 5
A = 40 + 5 = 45 degrees
Answer:
[tex]45 \: \: degrees[/tex]
Step-by-step explanation:
[tex]10x + 8x + 5 + 85 = 180 \\ 18x + 90 = 180 \\ 18x = 180 - 90 \\ 18x = 90 \\ \frac{18x}{18} = \frac{90}{18} \\ x = 5[/tex]
[tex]angle \: \: \: a = 8x + 5 \\ = 8 \times 5 + 5 \\ = 40 + 5 \\ = 45 \: \: degrees[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Section B question 1
Answer:
24
Step-by-step explanation:
Answer:there would be 24 ways
Step-by-step explanation:
For your question hopefully it helps
Someone please help me
Answer:
The slope is 2.2
Step-by-step explanation:
Since the point goes through (0,0) the slope is given by
m =y/x
4.4 / 2
2.2
what is 100,00 times 1/100,000, using the standard method of multiplication?
Answer:
0.1
Step-by-step explanation:
10,000 * (1/100,000) = 0.1
What is the value of a?
6/2
9
8V
36v2
Step-by-step explanation:
a= the height of the triangle=h
[tex]h^{2} = ef[/tex]
by ef, e= 18 & f=4
so...
[tex]h^{2} = 18 \times 4 = 72[/tex]
so you put both of them in a square root
[tex] \sqrt{h} = \sqrt{72}[/tex]
so the answer will be
[tex]h = \sqrt{72} = 6 \sqrt{2} [/tex]
Answer:
The answer is A
Step-by-step explanation:
Edg2020
It’s a proof... but I don’t think it’s that hard! *sorry I’m just dumb so please do this proof for me...*
Answer:
1. given
2. bisected angles create two congruent angles
3. same side length
4. ASA: angle, side, angle congruency
5. the two triangles are congruent, meaning all of their side lengths correspond, meaning that YZ and WZ are equivalent.
Find the value of p if Cos 49 = Sin(p+10)
Answer:Do you mean find p? If so then p+10 = 90 - 49, so p = 31°. Another possibility is in the second quadrant where p + 10 = 180 - 41 so p = 129° (The 41 comes from the first p+10, i.e. 31+10 = 41),
Check:
Step-by-step explanation:
Divide X^4 + 2x^2+1 by x+1
=x^5+2x^3+1+x÷×
Step-by-step explanation:
x^4+2x^2+(1÷x)+1
make 1÷x a fraction
x^4+2x^2+1/x+1
=x5+2x^3+1+x/x
help pls step by step
this is the problem you had to find the SIMPLIFYING EXPRESSIONS
this is the problem 7x - 2(x + 5) =
20 points!!!
Answer:
5x - 10
Step-by-step explanation:
7x - 2(x + 5)
= 7x - 2x -10
Please mark me brainliest if my answer is correct! Thanks!
= 5x - 10
Express 27 1/3 in simplest radical form
Answer:
this answer is attached to the picture
Radical function or values are values inside the square root. This shows that the cube root of the given value is 3
Radical functionRadical function or values are values inside the square root. For instance;
√a is a radical function.
According to the law of indices
a^1/3 = ∛a
Given the expression
27^1/3 = ∛27
∛27 = 3
This shows that the cube root of the given value is 3
Learn more on radical function here:https://brainly.com/question/13430746
Correct answers only please! I keep loosing points...
Quincy has $6,000 in a savings account that earns 4% interest, compounded annually.
To the nearest cent, how much interest will he earn in 5 years?
Use the formula B = p(1 + r)t, where B is the balance (final amount), p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.
Answer:
$ 7,299.92
Step-by-step explanation:
A = $ 7,299.92
A = P + I where
P (principal) = $ 6,000.00
I (interest) = $ 1,299.92
4. Find the length of side EG.
Answer:
42 cm
Step-by-step explanation:
the first triangle is 7 times bigger than the second triangle. ( 4 x 7 = 28)
so to find out line EG, you times 6 cm by 7. which is 42
Fill in the missing portions of the function to rewrite g(x) = 3a^2 − 42a + 135 to reveal the zeros of the function. What are the zeros of g(x)? (show your work!)
Enter your answers in the blanks:
g(x) = 3(_____)(_____)
Zeros: ______ and ______
Answer:
g(x) = 3(x-9)(x-5)
Zeros: x = 9 and x = 5.
Step-by-step explanation:
Given a second order polynomial expressed by the following equation:
[tex]ax^{2} + bx + c, a\neq0[/tex].
This polynomial has roots [tex]x_{1}, x_{2}[/tex] such that [tex]ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})[/tex], given by the following formulas:
[tex]x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}[/tex]
[tex]x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}[/tex]
[tex]\bigtriangleup = b^{2} - 4ac[/tex]
In this question:
[tex]g(x) = 3x^{2} - 42a + 135[/tex]
So
[tex]a = 3, b = -42, c = 135[/tex]
[tex]\bigtriangleup = (-42)^{2} - 4*3*135 = 144[/tex]
[tex]x_{1} = \frac{-(-42) + \sqrt{144}}{2*3} = 9[/tex]
[tex]x_{2} = \frac{-(42) - \sqrt{144}}{2*3} = 5[/tex]
So
g(x) = 3(x-9)(x-5)
Zeros: x = 9 and x = 5.
Pleaseee helpp i will let you brainlest
Answer:
13
Step-by-step explanation:
use Pythagorean
it is usually, 5, 12, 13
Fly with Us owns a D.C.10 airplane that has seats for 240 people. The company flies this airplane only if
there are at least 100 people on the plane. Write a compound inequality to show the possible number of
people in a flight on a D.C.10 with Fly with Us. Let n represent the possible number of people in the flight.
Answer:
562
Step-by-step explanation:
if 240 equals 100
What is the numbers of π
Answer:
3.141592653589793238462643383279502884197169399375105820974944592307816406286
Step-by-step explanation:
How to find area of the base for a cube
Answer: length*width
Step-by-step explanation:
The base of a cube is a square. As long as you can find the area of a square, you can find the base of a cube. A=Area. A=length*width or A=lw. This works the same for rectangular prisms, but with rectangles AND squares.
Tammy bought two rolls of tape. The first roll had 4.8 feet of tape and the second roll had 9.87 feet of tape. How many feet of tape did Tammy buy in all? *
Answer:
14.67ft of tape
Step-by-step explanation:
4.8+9.87=14.67
help i will give brainliest
Answer:
1/9
Step-by-step explanation:
The area of a polygon is the old area multiplied by the scale factor squared
New area = old area ( SF) ^2
The scale factor is 1/3
(1/3) ^2 = 1/9
The fraction is 1/9
QUICK HELP PLS!
A large city has 6 libraries.
Each library has at least 1 computer.
The median number of computers is 12.
The difference between the maximum number of computers and the minimum number of computers is 35.
Which statement are true about the number of computers in these libraries?
Select each correct answer.
A
There must be 3 libraries with 12 computers.
B
A library could have less than 12 computers.
C
A library could have more than 50 computers.
D
All libraries must have less than 35 computers.
E
At least 1 library does bot have 12 computers.
Answer:
A C E
Step-by-step explanation:
What is it then??? IDK WHAT I DID WRONG
Answer:
P= 300000/60
= 5000watt
single letter means watt
Uma pessoa com audição normal pode ouvir sons de frequências entre 20 Hz e 20000 Hz. As frequências das ondas de rádio ficam entre 3000 Hz a 300 GHz. (1 GHz = 1000000000 Hz). Se 10000 Hz, por exemplo, é uma frequência audível, por que as pessoas não ouvem as ondas de rádio que estão viajando no espaço que rodeia?
Answer:
........,..................y.....bhjkkbub