please help, i dont understand an ounce of this
Let x be the length of each side of the nonagon. We then split up the nonagon into 9 congruent, isosceles triangles, each with base = x and height = 12. Then the area of each triangle is 1/2 • x • 12 = 6x, so the total area of the nonagon will be 9 • 6x = 54x.
To find x, we can use some facts from geometry and trigonometry.
• In any polygon, the sum of the measures of the exterior angles is 360°. So each of these exterior angles will measure 360°/9 = 40°.
• Exterior angles are supplementary to the interior angles. So each interior angle will measure 180° - 40° = 140°.
• Each of the 9 triangles are isosceles with base angles measuring half the interior angles of the nonagon, 140°/2 = 70°.
• Cut the triangle in half along the labeled inradius of the nonagon, which has length 12. In the resulting right triangle, we have
tan(70°) = 12 / (x/2)
and solving for x gives
tan(70°) = 24/x
x = 24/tan(70°)
x = 24 cot(70°) ≈ 8.7
Then the total area of the nonagon is
54x = 54 • 24 cot(70°) ≈ 471.7
Every day, the Sandoval Family Restaurant serves 5/6 of a bottle of soda to their customers. How many days will 7 1/2 bottles of soda last?
Answer:
9 days
Step-by-step explanation:
1 day: 5/6 2 days: 10/6 3 days: 15/6 4 days: 20/6 5 days: 25/6
6 days: 30/6 7 days: 35/6 8 days: 40/6 9 days: 45/6
If you divide 45 and 6 by 3 you get 15/2. If you put 15/2 into a mixed number you would get 7 1/2. So 9 days would be your answer.
Answer:
7 1/2 bottles will last 9 days
Step-by-step explanation:
To answer this, divide '7 1/2 bottles' by '5/6 bottle per day:"
7 1/2 bottles
-----------------------
5/6 bottle/day
The unit "bottle"/"bottles" cancel, and so we are left with
7 1/2 day
------------------- and this is equivalent to 15 days/2 divided by 5/6 OR
5/6
15 days/2 times 6/5:
15(6)
--------- days = 18/2 days = 9 days (answer)
2(5)
7 1/2 bottles will last 9 days.
Correct answer gets BRAINLIEST
Answer:
The perimeter is 380 ft^2.
Step-by-step explanation:
To find the perimeter of a rectangle, you have to use the 2(a+b) formula as a method of solving. This formula can also be written as a+b+a+b or 2a+2b.
To solve it, you input a as 51 and 139 as b, though this doesn't really matter all too much. Using the previously stated formula, you should get 2(51+139). Solving what's in the parenthesis first (51+139), you should get 190.
Now, you should have the answer 2(190). Finishing off the equation and multiplying 2 by 190, your answer will be 380 ft^2.
BRAINLIEST TO THE RIGHT ANSWER!!!! 50PTS
SHOW ALL YOUR WORK
part 1: Paul the alien uses the function y=5/4 x+7 to model the situation. What weight does the model predict for an infant of 16 months?
part 2: What does the number 5/4 in Part (1) mean in the context of the situation?
part 3: What does the number 7 in Part (1) mean in the context of the situation?
Answer:
See below
Step-by-step explanation:
1 put in 16 for x
5/4 (16) + 7 = 27 pounds at 16 months
2 5/4 would be the pounds an infant should put on each month
3 7 would be when the infant is born ( x = month 0) 7 pound birthweight
Answer:
See below
Step-by-step explanation
Step-by-step explanation:
1 put in 16 for x
5/4 (16) + 7 = 27 pounds at 16 months
2 5/4 would be the pounds an infant should put on each month
3 7 would be when the infant is born ( x = month 0) 7 pound birthweight
The price of one share of Acme Company declined $2 per day for 4 days in a row. How much did the price of one share change in total after the 4 days?**Just write the negative or positive number (Example. -1 or 1)
its either -8 or 8 im not sure which good luck tho!
Based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly travel in 24 hours if it continues to fly at the same speed?
The dependent variable is time, the equation is y = 22x, and the dragonfly will travel 528 miles.
The dependent variable is time, the equation is x = 22y, and the dragonfly will travel 1,056 miles.
The dependent variable is distance, the equation is y = 22x, and the dragonfly will travel 528 miles.
The dependent variable is distance, the equation is x = 22y, and the dragonfly will travel 1,056 miles.
Answer:
Based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly travel in 24 hours if it continues to fly at the same speed?
The dependent variable is time, the equation is y = 22x, and the dragonfly will travel 528 miles.
The dependent variable is time, the equation is x = 22y, and the dragonfly will travel 1,056 miles.
The dependent variable is distance, the equation is y = 22x, and the dragonfly will travel 528 miles.
The dependent variable is distance, the equation is x = 22y, and the dragonfly will travel 1,056 miles.
Step-by-step explanation:
19. Suppose five cards are drawn from a deck. Find the probability of obtaining the indicated cards.
Four of a kind (such as four aces or four kings)
Answer:
2.08% chance of drawing 4 of a kind
Step-by-step explanation:
all you gotta do is find what 4 percent of 52 is so in that case you multiply 0.04×52 which I believe would be 2.08
PLEASE HELP ME WITH THIS QUESTION
Answer:
62 sorry if im wrong
Step-by-step explanation:
PLEASEE NEED HELP THE QUESTION NEEDS TO BE DONE LIKE NOWW!! :))
Answer:
2,-2;-4,-2;-5;-5
Step-by-step explanation:
Answer:
The first is (-5,5) the second is (-4,2) and the third (2,2)
In your class, 7 students do not receive a weekly allowance,5 students receive $3 , 7 students receive $5, 3 students receive $6 , and 2 students receive $8 .
a. What is the mean weekly allowance?
The mean weekly allowance is______
dollars.
Answer:
The mean weekly allowance is $3.5
Step-by-step explanation:
to find the average, we add up everything, and divide it by how many students there are.
0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 8, 8 <- this is what you add up
you get 84. Then you divide this amongst all of the students.
7+5+7+3+2=24
84/24 = 3.5
Please give brainliest!
Hope this helps :)
How many different calculators are available?
I need this answer ASAP! Correct answer with explanation will get marked brainliest
12 different calculators
total = types x colors
total = 4 x 3 = 12
Answer: 12
PLS HELP ASAP ITS DUE TODAY!!
Answer: C
Step-by-step explanation:
The dot plots below show the weights of the players of two teams: Based on visual inspection of the dot plots, which team appears to have the larger mean weight?
A. Not enough information is available to draw a conclusion.
B. Both groups are similar.
C. Team E
D. Team F
Answer:
D. Team F
Step-by-step explanation:
Team F is expected to have larger mean since the dots are for the higher values of weights and hence will result in higher mean but for team E the dots are for smaller weights and which result in a less mean.
ASAP (I will give brainliest for most accurate answer) move the options to the blank to complete the series of transformations that will show triangle abc - def
Answer:
1. is 2
2. is right and 10
Step-by-step explanation:
just took the test will explain if needed
From the triangles given, ∆ DEF was dilated to ∆ ABC
The dilated triangle is = ∆ ABC
To find the scale factor uses for the dilation of the triangle, the length of the triangle AC and DF are considered.
AC from the scale= -2 -(-7)
= 7-2= 5
DF= 9-6.5
= 2.5
Therefore the scale factor = 5/2.5 = 2
And since the scale factor of dilation is 2 this means that ∆ A' B' C' can be translated to the 0.5 by 2 units.
Learn more about triangles here:
https://brainly.com/question/2644832
#SPJ2
How much is 5 cents + 3 dimes+ four 5 cents + 2 quaters equals ?
I'm trying to make a dollar with these pennies
ill give brainly but hurry-
Answer:
I'm answering, give me a sec
Step-by-step explanation:
A pyramid has a volume of 1,944 inches cubed and a rectangular base with the dimensions 18 inches by 9 inches. What is the height of the pyramid? 4 in. 12 in. 24 in. 36 in.
Answer: 4 inches
Step-by-step explanation: 1,944 / 18/ 9 / 1/3 = 4
Based on the calculations, the height of this pyramid is equal to: D. 36 inches.
Given the following data:
Volume of pyramid = 1,944 cubic inches.Dimensions of rectangular base = 18 inches by 9 inches.How to calculate the height of this pyramid?Mathematically, the volume of a pyramid is calculated by using this formula:
Volume = 1/3 × b × h
Where:
b is the base area.h is the height.For the base area, we have:
Base area = length × breadth
Base area = 18 × 9
Base area = 162 square inches.
Substituting the given parameters into the formula, we have;
1,944 = 1/3 × 162 × h
1,944 = 54h
h = 1,944/54
Height, h = 36 inches.
Read more on pyramid here: https://brainly.com/question/2797351
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HELP FAST !! What is the correct answer? I think that it’s the last one.
Answer: The third one
Step-by-step explanation: 1/21(z)=42 z=882. If you check each equation with each other the answer is correct. Also 882/21=42
Answer:
C or D
Step-by-step explanation:
its either one of those two but go woth which ever you thuink
ill give brainly HURRY
The cost of a cleaning service includes labor and supplies. Supplies are 30% of the total cost. The cost of supplies for a certain cleaning service is $54.
What is the total cost of the cleaning service?
Enter your answer in the box.
Answer:
The total cost of the cleaning service is $180
Step-by-step explanation:
We have, 30% × x = 54
or,
30/100 × x = 54
Multiplying both sides by 100 and dividing both sides by 30,
we have x = 54 × 100/30
x = 180
If you are using a calculator, simply enter 54×100÷30, which will give you the answer.
I was supposed to post this earlier! (WILL GIVE BRAINLIEST)
Even If your wrong I will still give credit because Your amazing! ^^
Answer:
Volume of the prism = lwh
l = length = 2 cm
w = width = 3 cm
h = height = 7 cm
—
Volume = 2x3x7 = 42 cm³
—
Have a nice day!!
Answer:
the other person is right- 42 cm³
i took the test it should be that
14.30:A haunted house has six windows. In how many ways can Georgie the Ghost enter the house by one window and leave by a different window?
Answer:
30 waysStep-by-step explanation:
Possible ways to enter
6 windowsPossible ways to exit
5 windows, since same window entered is not usedTotal number of ways is
6*5 = 30A weather forecast states that there is a 20% probability of rain on each of the next 3 days.
Complete the description of a simulation you could perform using random numbers to find the experimental probability that it will not rain on any of the next 3 days.
To simulate a 20% probability of rain over 3 days, let
of 10 numbers represent a day with rain. So,
of the numbers represent a day without rain. Then, perform multiple trials, generating
random numbers for each trial.
PLS HELP! I will give brainliest if correct!
What is the surface area of the three-dimensional solid you created?
35 cm2
56 cm2
72 cm2
90 cm2
Answer:
72 cm²
In order to find the surface area of rectangular prism
rectangular prism surface area: 2(LW + HW + HL)
Identify following sides:
Length: 6 cmWidth: 3 cmHeight: 2 cmSolve for surface area:
2(6*3 + 2*3 + 2*6)2(18 + 6 + 12)2(36)72 cm²17. A student has five mathematics books, four history books, and eight fiction books. In how many different ways can they be arranged on a shelf if books in the same category are kept next to one another?
I NEED HELP ASAP!!! ^^ ( I WILL GIVE BRAINLIEST)
Answer:
320 ft³
Step-by-step explanation:
volume = (area of base) × (height of prism)
volume = bh/2 × (height of prism)
volume = (6 2/3 × 8/2 × 12) ft³
volume = 320 ft³
Answer:320 ft³
Step-by-step explanation:
Explain your answer.
Answer:
60%
Step-by-step explanation: Because the graph flattens out at about 60% meaning that that is the most likely percentage.
PLS HELP MEE I NEED THUS REAL BADD!!! I'LL GIVE BRANLIESTT!!!
The Stem-and-Leaf plot shows the class average on the last math test. Select the true statement below.
7=2,8,8
8=2,4,4,8,8
9=2,2,4,6,8,8
10=0,0
A. The mean was 88.
B. The median was 90.
C. The range was 18.
D. The mode was 72.
Answer:
B is the correct answer. The two median numbers are 88 and 92. If you find the average of those, you get 90. Therefore, the median is 90.
Step-by-step explanation:
14.36: Tyler has entered a buffet line in which he chooses one kind of meat, two different vegetables, and one dessert from the selections below. If the order of food items is not important, how many different meals might he choose? Meat beef, chicken, pork
Vegetables: baked beans, corn, potatoes, tomatoes
Dessert:brownies, chocolate cake, chocolate pudding, ice cream
Answer:
72 different meal optionsStep-by-step explanation:
We have a choice of
1. Meat - 1 of 3 options2. Vegetables - 2 of 4 options3. Dessert - 1 of 4 optionsTotal number of meal combinations is
Meat*Vegetables*Dessert = 3C1*4C2*4C1 = 3*6*4 = 72GIVING BRAINLIEST!!!
Jenna is surveying the number of trucks in parking lots. One parking lot has 9 trucks and a total of 36 vehicles. Based on her survey, how many can she predict will be trucks?
A. 26
B. 3
C. 77
D. 416
A tank can be filled in 22 and a fifth minutes. What fraction of it will be filled in 21 min
Answer:
I believe the answer is about 95 percent.
Step-by-step explanation:
The reason for this answer is because as said 22 and a fifth would mean the tank is full. This means I set up a proportion. What I did was...
22 1/5 over 100 = 21 over x
Now: I do 21 multiply by 100 divided by 22 1/5 to get the answer
What I just wrote is the rule of proportions
Finally, after doing all of that, the answer I got was 94.59459459, but I rounded to the answer of 92 percent.
