What is the name of the polygon if the sum of the measures of its interior angles is 1080°?
Answer:
Octagon
Step-by-step explanation:
It has 8 sides
The matrix below represents the number of minutes four friends spend driving to each others’ homes each week. A row label represents the friend driving and a column label represents the friend being visited.
Answer:
D - 45
Explanation:
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can someone please solve 5-2x<7
Iq test scores are normally distributed with a mean of 100 and a standard deviation of 15. find the x-score that corresponds to a z-score of 2.33.
Answer: 134.95 to be exact
you multiply the zscore with the standard deviation and add the mean
The formula for calculating the z-score:
z = (x - μ) / σ
Where
μ - mean
σ = standard deviation
The x-score that corresponds to a z-score of 2.33 is 134.95.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
Iq test scores are normally distributed:
Mean = 100
Standard deviation = 15
z-score = 2.33
The formula for calculating the z-score:
z = (x - μ) / σ
Where
μ - mean
σ = standard deviation
Now,
2.33 = (x - 100) / 15
Multiply 15 on both sides.
2.33 x 15 = x - 100
34.95 = x - 100
Add 100 on both sides.
34.95 + 100 = x
x = 134.95
Thus,
The x-score that corresponds to a z-score of 2.33 is 134.95.
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All ticket for a concert are the same price.
Amy and dan pay £63 altogether for some tickets.
Amy pays 24.50 for 7 tickets.
How many tickets does Dan buy?
To determine how many tickets Dan bought, we calculate the price per ticket from Amy's purchase as £3.50 each. Then we subtract Amy's payment from the total to find Dan's payment of £38.50, and finally, we divide Dan's payment by the price per ticket to find that Dan bought 11 tickets.
The question involves finding out how many tickets Dan bought for a concert, using the total amount paid by both Amy and Dan and the price Amy paid for her tickets.
First, we need to find out the price per ticket from the information provided about Amy's purchase:
Amy pays £24.50 for 7 tickets.
To find the price per ticket, we divide £24.50 by 7:
Price per ticket = £24.50 / 7 = £3.50
Next, we use the total amount paid to find out how much Dan spent:
Total amount paid by Amy and Dan = £63
Amount paid by Amy = £24.50
So, the amount paid by Dan = Total amount - Amount paid by Amy
Amount paid by Dan = £63 - £24.50 = £38.50
To find out how many tickets Dan bought, we divide the amount he paid by the price per ticket:
Number of tickets Dan bought = £38.50 / £3.50
Number of tickets Dan bought = 11 tickets
A spherical gas tank has a 10 foot diameter when filled with propane it provides 358,000,000 BTUs how many BTUs does 1 cubic foot of propane yield? Round to the nearest thousand
The number of BTUs does 1 cubic foot of propane yield is 684,000 BTUs/ft³ (in thousand)
Calculation of the number of BTUs:
Since we know that
The volume of the spherical tank is
[tex]V=4\div 3\pi r^3[/tex]
Now the volume of the tank will be:
[tex]V=4\div 3\times \pi \times (10/2)^3[/tex]
=523.59877756
= 523.6 ft³
Now the number should be
= [total amount] ÷ [total volume]
=358,000,000 ÷ 523.6
=683,728.0367 BTUs/ft³
= 684,000 BTUs/ft³ (in thousand)
Therefore, The number of BTUs does 1 cubic foot of propane yield is 684,000 BTUs/ft³ (in thousand)
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An angle measuring between 90° and 180° is called _____. A.obtuse B.acute C.straight D.small
PLEASE PLEASE HELP ME WITH THESE!!!!
I REALLY NEED HELP AND I WILL AWARD BRAINLIEST FOR WHO IS CORRECT!!!
1. The table below shows the number of cameras sold in each month at the camera shop.
January: 35 cameras were sold
Feb. 21 cameras were sold
Mar. 35 were sold.
April: 55 were sold
May: 73 were sold
Jun. 82 sold
Jul. 85 were sold
Aug. 64 cameras were sold
Sep. 52 sold
Oct. 42 were sold
Nov. 89 were sold
Dec. 125 cameras sold
Use the set of data to answer the question.
The camera shop wants to use the measure of central tendency that expresses how successful they are in selling cameras. Which measure of central tendency should they choose?
A. Mean
B. Interquartile
C. Mode
D. Median
PLEASE HELP PLEASE AND THANK YOU!!!
(6a −? )5a =? a2 − 35a
Suppose that the measure of the minor arc BD is 172°. Find m BCD. (I need help on all questions in picture)
line AB is tangent to circle O at A. The diagram is not drawn to scale.
If AO=21 and BC=14, what is AB?
Would someone Please answer this question please will be thanked and also will pick brainly!! (please be honest)
Write (3n)^3 without exponents
Answer:
Without exponents, we can write the term as: [tex]27(n)(n)(n)[/tex]
Step-by-step explanation:
The given term is :
[tex](3n)^{3}[/tex]
This can be written as:
[tex](3n)(3n)(3n)[/tex]
= [tex]27n^{3}[/tex]
= [tex]27(n)(n)(n)[/tex]
Hence, without exponents, we can write the term as: [tex]27(n)(n)(n)[/tex]
WHAT IS THE VALUE OF X
use the graph of y=sin theta to find the value of 2theta for theta = pi/4 radians
Find the area of a trapezoid based on the information given below. H=4√2 b1=5√2 b2=3√2
Yo!!!NEED HELP!!!!WILL GIVE BRAIN!!!!!!!
During the first part of a trip, a canoeist travels 96 miles at a certain speed. the canoeist travels 15 miles on the second part of the trip at a speed 5 mph slower. the total time for the trip is 4 hrs. what was the speed on each part of the trip?
[tex]\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a} [/tex]
a = 4
b = - 131
c = 480
[tex]\text{x = }\dfrac{ -(-131) \pm \sqrt{(-131)^{2} - 4*4*480 } }{2*4} [/tex]Identify the value that is NOT in the range of the piece-wise function.
A. -3
B. 1
C. 3
D. -1
How many ears of corn would equal to 5 pounds?
What is the domain for the piece of the function represented by f(x) = x + 1?
Answer:
All real numbers
Step-by-step explanation:
The domain of the function represented by f(x) = x + 1 is the all real numbers as there is only addition involved in the function so putting any number as input will not lead the function to infinity.
50 points to answer this for me
Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 4−x and y = 8−x−1 intersect are the solutions of the equation 4−x = 8−x−1. (4 points)
Part B: Make tables to find the solution to 4−x = 8−x−1. Take the integer values of x between −3 and 3. (4 points)
Part C: How can you solve the equation 4−x = 8−x−1 graphically? (2 points)
We would graph both equations: y = 4-x and y = 8-x^-1
The point on the graph where the lines cross is the solution to the system of equations.
using a graph tool
see the attached figure N 2
the solutions are the points
(-4.24,8.24)
(0.24,3.76)
Part A. We have two equations: y = 4-x and y = 8-x^-1
Given two simultaneous equations that are both to be true, then the solution is the points where the lines cross. The intersection is where the two equations are equal. Therefore the solution that works for both equations is when
4-x = 8-x^-1
This is where the two graphs will cross and that is the common point that satisfies both equations.
Part B
see the attached table
the table shows that one of the solutions is in the interval [-1,1]
Part C To solve graphically the equation 4-x = 8-x^-1
We would graph both equations: y = 4-x and y = 8-x^-1
The point on the graph where the lines cross is the solution to the system of equations.
using a graph tool
see the attached figure N 2
the solutions are the points
(-4.24,8.24) (0.24,3.76)
Over the past week, 34 baby boys were born at the hospital. this was 54% of all babies born. how many girls were born over the past week? (enter numeric value only. if grounding is necessary, round to the nearest whole number
Suppose you are headed toward a plateau 70 m high. If the angle of elevation to the top of the plateau is 60 degrees, how far are you from the base of the plateau?
To find the distance from the plateau's base, use the tangent function with the given height and angle of elevation.
Explanation:We can use trigonometry to determine the distance from the base of the plateau. The vertical height of the table (opposite side) is 70 m, and the elevation angle to the top of the plateau (theta) is 60 degrees. We can use the tangent function to find the distance (adjacent side) from the table's base: tan(theta) = opposite/contiguous. Solving for the space, we get: adjacent = contrasting/tan(theta). Plugging in the values, the distance from the plateau's base is approximately 40 m.
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x 0 2 4 6 8 f(x) 15 15.5 17 19.5 23 Write the quadratic function that corresponds to the given table of values in standard form, f(x) = ax2 + bx + c, where a, b and c are constants.
f(x)=ax^2+bx+c
Answer with Step-by-step explanation:
We are given that:
f(x)=ax²+bx+c
also at x=0 f(x)=15
Putting x=0 in f(x)
a×0+b×0+c=15
⇒ c=15
now, f(2)=15.5
⇒ a×2²+b×2+c=15.5
⇒ 4a+2b+15=15.5
⇒ 4a+2b=0.5 -------(1)
f(4)=17
⇒ a×4²+b×4+c=17
⇒ 16a+4b+15=17
⇒ 16a+4b=2 --------(2)
equation (2)- 2×equation(1)
⇒ 16a+4b-8a-4b=2-2×0.5
⇒ 8a=2-1
⇒ 8a=1
⇒ a=1/8
⇒ a=0.125
Putting value of a and c in equation (1)
⇒ 4×0.125+2b=0.5
⇒ 0.5+2b=0.5
⇒ 2b=0
⇒ b=0
Hence
a=0.125
b=0
c=15
and f(x)=0.125x²+15
Drew ran 5 3/ 8 miles yesterday. Collin ran 8 5/12 miles yesterday. How much farther did Collin run? Choose the correct values to leave your answer as a mixed number. Numbers may be used once or not at all.
Answer:
The correct answer is 3 1/24
Step-by-step explanation:
because I did all the math
Answer:
3 1/24
Step-by-step explanation:
If the diameter of a sphere is 12cm, what is its volume to the nearest hundredth
10 - 3(3x - 40) = -9x A)x = -9 B)no solution C)x = 10 D)all real numbers
Pratap Puri rowed 14 miles down a river in 2 hours, but the return trip took him 3 and one half hours. Find the rate Pratap can row in still water and find the rate of the current. Let x equals rate Pratap can row in still water and y equals rate of the current. What is the rate that Pratap rows in still water?
Final answer:
By establishing equations based on Pratap's rowing times upstream and downstream, we find that Pratap's rowing rate in still water is 5.5 miles per hour.
Explanation:
Finding Pratap's Rowing Rate in Still Water and the Current Rate
To calculate Pratap Puri's rowing rate in still water and the rate of the current, we need to set up two equations based on the information provided. We know that Pratap rowed 14 miles down a river in 2 hours and the return trip took 3 and a half hours.
Step-by-Step Solution
Let x be the rate at which Pratap can row in still water, and y be the rate of the current.
The downstream speed (with the current) is x + y, and the upstream speed (against the current) is x - y.
Using the formula distance = rate × time, for the downstream trip we have 14 = (x + y) × 2, and for the upstream trip 14 = (x - y) × 3.5.
Simplifying both equations gives us: 7 = x + y and 4 = x - y.
To find x, add the two equations to eliminate y, yielding 11 = 2x, or x = 5.5.
Therefore, Pratap's rowing rate in still water is 5.5 miles per hour.
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