A new roller skating rink was just built in Chesapeake. The owner is putting a hand rail around the perimeter of the rink. Approximately how many meters of railing is needed?
Answers
Answer:
perimeter of 2 semi circle =πd=30π=94.25m
now total perimeter =94.25m +80+80=254.25m
so.
254.25m of railing is needed.
Related Questions
Can somebody explain Scatter Plots and Equations of Lines for me. I'm not quite understanding it
Answers
A scatter plot (aka scatter chart, scatter graph) uses dots to represent values for two different numeric variables. The position of each dot on the horizontal and vertical axis indicates values for an individual data point. Scatter plots are used to observe relationships between variables.
Equation Of Line means A straight line on the coordinate plane can be described by the equation. y = mx+b. where m is the slope of the line and b is the intercept.
In a raffle, 200 tickets are sold.
The tickets are either red or blue.
The winning ticket is picked at random.
(a)
What is the probability that the winning ticket is green?
Answers
Answer:
0%
Step-by-step explanation:
Answer:
there is a zero percent chance that the winning ticket will be green if all of the tickets are either red or blue
A culture started with 5000 bacteria after three hours it grew 6500 bacteria predict how many bacteria will be present after 13 hours round your answer to the nearest whole number
Answers
Answer:
15595 bacteria will be present after 13 hours.
Step-by-step explanation:
Continuous population growth:
The continuous population growth model, for the population after t hours, is given by:
[tex]P(t) = P(0)e^{rt}[/tex]
In which P(0) is the initial population and r is the growth rate.
Started with 5000 bacteria
This means that [tex]P(0) = 5000[/tex]
So
[tex]P(t) = 5000e^{rt}[/tex]
After three hours it grew 6500 bacteria:
This means that [tex]P(3) = 6500[/tex]. We use this to find r.
[tex]P(t) = 5000e^{rt}[/tex]
[tex]6500 = 5000e^{3r}[/tex]
[tex]e^{3r} = \frac{65}{50}[/tex]
[tex]\ln{e^{3r}} = \ln{\frac{65}{50}}[/tex]
[tex]3r = \ln{\frac{65}{50}}[/tex]
[tex]r = \frac{\ln{\frac{65}{50}}}{3}[/tex]
[tex]r = 0.0875[/tex]
So
[tex]P(t) = 5000e^{0.0875t}[/tex]
How many bacteria will be present after 13 hours?
This is P(13). So
[tex]P(13) = 5000e^{0.0875*13} = 15594.8[/tex]
Rounding to the nearest whole number
15595 bacteria will be present after 13 hours.
BEUH PLEASE ANWSERRDDD THIS
Answers
Answer:
Circumference
Step-by-step explanation:
Answer:
circumference
Step-by-step explanation:
Find the perimeter of the rectangle for the given measurements.
Width = 1.5 feet
Length = 2.7 feet
Perimeter = _____ feet (round your answer to the nearest tenth)
Answers
Answer:
8.4 feet
I would appreciate Brainliest, but no worries.
Is 0.6 greater than 0.85?? ( 4th grade work)
Answers
Answer:
No its not
Step-by-step explanation:
Answer:
No, 0.85 is greater.
Step-by-step explanation:
Imagine a number line, with one at the end and 0.1 at the other end. With .85, It would be closer to one, with 0.6 being behind 0.85. The only other reason that 0.6 is greater than 0.85 is if they are converted to fractions.
I NEED HELP FAST> THIS PROBLEM IS SO CONFUSING!! the ^ mean exponents
after simplifying, what will x be equivalent to? (a^4)^6=a^x
Answers
Answer:
x will be equivalent to 24
Step-by-step explanation:
apply the multiplication rule to the exponents in (a^4)^6
4 times 6= 24, so (a^4)^6 is equivalent to a^24
Use the graph to answer the question.
On a coordinate plane, a line goes from (negative 5, 7) to (3, 3).
Which parametric equations describe the curve?
x = –t + 1 and y = 0.5t + 4 when –2 ≤ t ≤ 6
x = –t + 1 and y = 0.5t + 4 when –5 ≤ t ≤ 3
x = 0.5t + 4 and y = –t + 1 when –2 ≤ t ≤ 6
x = 0.5t + 4 and y = –t + 1 when –5 ≤ t ≤ 3
Answers
The answer for this question is A:
A = x = –t + 1 and y = 0.5t + 4 when –2 ≤ t ≤ 6
The parametric equations of the curve are:
x = –t + 1 and y = 0.5t + 4 when –5 ≤ t ≤ 3
Parametric equation of the line:The parametric equation of the line is, [tex]x=x_0+at,y=y_0+bt[/tex] where [tex](x_0,y_0)[/tex] is the point on the line and [tex]\frac{b}{a}[/tex] is the slope of the line with a, b are real numbers.
Slope of the line:If (a, b) and (c, d) are any two points on the line then, slope of the line is:
m = (d - b)/(c - a)
For given situation,
a line goes from (-5, 7) to (3, 3).
Using the formula of slope, the value of m i.e., slope of the line would be,
⇒ m = (7 - 3)/(-5 - 3)
⇒ m = 4/(-8)
⇒ m = 1/(-2)
⇒ m= 0.5/(-1)
Comparing with m = b/a,
b = 0.5 and a = -1.
From the graph of the line given below,
A point (1, 4) is also on the line.
Let [tex]\bold{(x_0,y_0)=(1,4)}[/tex]
Using the parametric equation of the line,
[tex]x=x_0+at[/tex]
⇒ x = 1 + (-1)t
⇒ x = -t + 1
and [tex]y = y_0+bt[/tex]
⇒ y = 4 + (0.5)t
⇒ y = 0.5t + 4
Therefore, the parametric equations of the curve are:
x = –t + 1 and y = 0.5t + 4 when –5 ≤ t ≤ 3
Learn more about the parametric equations here:
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Between what two numbers would 9 be located on a number line?
A. 8 and 10
B. 7 and 8
C. 9 and 10
D. 10 and 11
Answers
[tex]it \: is \: simple \\ between \: 8 \: \: \: 10[/tex]
Answer:
A
Step-by-step explanation:
the between of two bumber of 9 is 8 & 10 8<9<10
Which is the y-intercept of the equations?
Equation A
Х 0
Y 1
1
4
2
9
3
16
Equation B
f(x) - -x+ 2
O A: -1, B: 2
O A: 2, B: 0
O A: 1, B: 2
O A: -1, B: -1
to coarch
Answers
Answer:
0, 1 would be y-intercept
Step-by-step explanation:
0, 1 is where the line crosses the x-axis
23. The mean weight of trucks traveling on a particular section of 1-475 is not known. A state highway inspector needs an estimate of the mean. He selects a random sample of 49 trucks passing the weighing station and finds the mean is 15.8 tons, with a standard deviation of the sample of 4.2 tons. What is probability that a truck will weigh less than 14.3 tons
Answers
Answer:
0.3594 = 35.94% probability that a truck will weigh less than 14.3 tons
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean is 15.8 tons, with a standard deviation of the sample of 4.2 tons.
This means that [tex]\mu = 15.8, \sigma = 4.2[/tex]
What is probability that a truck will weigh less than 14.3 tons?
This is the pvalue of Z when X = 14.3. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{14.3 - 15.8}{4.2}[/tex]
[tex]Z = -0.36[/tex]
[tex]Z = -0.36[/tex] has a pvalue of 0.3594
0.3594 = 35.94% probability that a truck will weigh less than 14.3 tons
Karen bought some books for $4 each and received a discount of $5 off of her total purchase. She spent 571 after the discount. How many
books did she buy? ( NO LINKS ) LINKS GET REPORTED!
Answers
Answer:
she bought 143
Step-by-step explanation:
there are 12 dozen pencils in a gross. how many pencils are in 15 gross
Answers
Answer:
A gross refers to a group of 144 items (a dozen or a square dozen, 122). A great gross refers to a group of 1728 items (a dozen gross or a cubic dozen, 123). A small gross or a great hundred refers to a group of 120 items (ten dozen, 10×12).
What is the approximate area, in square units, of the circle shown below?
Answers
9514 1404 393
Answer:
50.3 square units
Step-by-step explanation:
The circle has a diameter of 8 units, so a radius of 4 units. The area formula is ...
A = πr²
A ≈ 3.14159(4²) ≈ 50.265
The area of the circle is about 50.3 square units.
What point is 4 points from m
Answers
Answer:
A
Step-by-step explanation:
Have a nice day :)
Answer:
point A
Step-by-step explanation:
counting m 4 steps down to A
7. Lines that intersect forming a square corner is called
a. Parallel lines b. Intersecting lines c. Perpendicular lines
Answers
Answer:
c. Perpendicular lines
Step-by-step explanation:
Plzz help me!!!
I will give you brainliest
Which statement is TRUE?
A)
The perimeter of the green rectangle is equal to the circumference of the
black circle.
B)
The perimeter of the green rectangle is less than the circumference of the
black circle.
C)
The perimeter of the green rectangle is greater than the circumference of
the black circle.
D)
The perimeter of the green rectangle exactly half of the circumference of
the black circle.
Answers
Answer:
Can you add a picture or visual model if there is one?
Step-by-step explanation:
Mr. Jones has fives eats on the school’s trip to Grand Canyon for his students. In how many different ways Mr. Jones can select a group of five from his class of 35?
Answers
Number of seats available for Mr. Jones had for the trip = 4
Number of students in his class = 36
Number of ways he can select a group of 4 out of 36 students from his class is calculated as follows:
=58,9,05
Find the value of x in the triangle below.
Answers
Answer:
Can't be Solved
Step-by-step explanation:
tan x = opp/adj
tan x = 23/11
tan x = 2.09090909 which is about
tan x = 2.09
x = 64.4 degrees which is the tangent of 2.09 in degrees.
x = 64.4 degrees
This is the only way to solve, since no answer is equivalent it can't be solved.
Rationalize the denominator and simplify 2√x-3 √y / √x+ √y
Answers
2√x−3√xyx+√y is your answer.
Taylor cuts 1/3 sheet of constitution paper for arts and crafts project. Enter 1/3 as an equivalent fraction with the demontinators shown.
Answers
What is the value of q?
s
O 4,5
O2/14
s
O 20/5
R
r
O 64/5
4
T
10
Answers
Answer:
the value is 36
Step-by-step explanation: so you add
The value of q is 36 in the equation q+9=45
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given equation is q+9=45
q plus nine equal to forty five
We have to find the value of q
Plus is the operator
q is the variable
Subtract 9 from both sides
q=45-9
q=36
Hence, the value of q is 36 in the equation q+9=45
To learn more on Equation:
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Find the value of q in equation q+9=45
-2 is the ________ of 2
Answers
Answer: -2 is the numerical opposite of the number 2. Any numbers opposite is it's negative form. (except for 0 due to there being no opposite for something that is not negative or positive.)
The logo on a shirt is in the shape of a parallelogram. What is the area of the parallelogram? Round to the nearest tenth.
Answers
Answer:
90
Step-by-step explanation:
I need! can you help me?
Answers
Answer:
C maybe
Step-by-step explanation:
5/6 x 2/7
please help me again
Answers
Answer:
[tex] \frac{5}{6} \times \frac{2}{7} \\ = \frac{5 \times 2}{6\times 7} \\ = \frac{10}{42} [/tex]
Jeff translates triangle FGH 2 units left and 4 units up.
What are the new coordinates of point F after the translation?
O A (-2,4)
O B. (0,4)
O C. (2,6)
OD. (6,6)
(look at photo)
PLZ HELP FAST ILL GIVE POINTS AND BRAINLYEST
Answers
Answer:
C. (2,6)
Step-by-step explanation:
Translate 2 units left and 4 units up: (x,y) -> (x-2 , y+4)
F (4,2) -> (4-2 , 2+4) -> (2 , 6)
Please help I will give brainily and more, NEEDING SMART PEOPLE
On the coordinate plane shown below, points
G and I
have coordinates (6 ,4) and (3 ,2), respectively.
1.) Design a strategy in which the Pythagorean theorem is used to calculate the straight line distance between points
G and I on a coordinate plane. Use complete sentences to describe the strategy.
2.) Use the Pythagorean theorem to determine the distance between the two points on the coordinate plane. In your final answer, include all of your calculations.
3.) Use the distance formula and the coordinates of points G and I
to prove that the Pythagorean theorem is an alternative method for calculating the distance between points on a coordinate plane. In your final answer, include all of your calculations.
Answers
Answer:Given : points G and I have coordinates (6,4) and (3,2)
To Find : Use Pythagorean theorem to calculate the straight line distance between points G and I
Solution:
points G and I have coordinates (6,4) and (3,2)
Draw a line parallel to y axis passing through G
Draw a line parallel to x axis passing through I
Intersection point K ( 6 , 2)
IK = 6 - 3 = 3
GK = 4 -2 = 2
ΔIKG right angled triangle
Pythagoras' theorem: square on the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two perpendicular sides.
GI² = IK² + GK²
=> GI² = 3² + 2²
=> GI² = 13
=> GI = √13
using distance formula
G (6,4) and I (3,2)
= √(6 - 3)² + (4 - 2)²
= √3² + 2²
= √9 + 4
= √13
Learn More:
different approaches of Pythagoras theorem - Brainly.in
brainly.in/question/10516214
13. In Fig. 16.10, BCDE is a rectangle , ED = 3.88 cm,AD= 10 cm ...
brainly.in/question/19749562
Given that v = (5,-4,4) and w = (9,-2,7) evaluate v • w.
A. 81
B. 19
C. (45,8,28)
D. (-40,-16,-8)
Answers
Answer:
81
Step-by-step explanation:
Evaluating v • w
Recall: Given vectors a and B in Cartesian plane, x, y and z
vector a = [ax ay az] and b = [bx by bz]
The dot product is :
a•b = axbx + ayby + azbz
Using the relation above,
v • w = (5*9) + (-4*-2) + (4*7)
v • w = 45 + 8 + 28
v • w = 81
Hence, v • w = 81
can someone help i will give brainlest
Answers
Answer:
Your answer is x+ 9.Thanks.