Answers
The answer is 131.88
Step-by-step explanation:
because circumference is radius times 2 times pi (aka 3.14) so you do 21 times 2 = 42 times pi which is 131.88
Related Questions
Please help it needs me to find the volume but what is the height supposed to be?
Answers
Answer:
a=3
b=16.6
Step-by-step explanation:
(4.4 x 12) + (6x8) + (8x12)
A group of students is painting the background of a set for a school play what is the area of the part that is painted in gray
Answers
Determine whether the given value makes a true statement.
NO LINKS-DRIVES-DOCS ETC.
WILL MARK BRAINLYEST
EARN LOTS OF POINTS
Answers
Answer:
Yes it is true
Step-by-step explanation:
cause 11 + 8 = 19
now give me the brainliest lol
[tex]65 - 2 \times b = 55[/tex]
Answers
Answer:
b = 5
Step-by-step explanation:
- add -65 at the two members:
65-65 -2b = 55-65
-2b = -10
- divide the two members for -2
b = 5
Explanation-
-2b=55-65
-2b=-10
8. Jordan's fish tank was only 62.5% full so
he added some water to it so it got to 80%
full. If the tank now has 40 gallons of water
in it, how many gallons did he add?
12. When
salar
was s
of his
your
A. 8.25 gallons
B. 8.5 gallons
C. 8.75 gallons
D. 9 gallons
13. The
Answers
Chang is playing a game of chance in which he tosses
Answers
Answer:
3,405
Step-by-step explanation:
In a study of academic procrastination, the authors of a paper reported that for a sample of 451 undergraduate students at a midsize public university preparing for a final exam in an introductory psychology course, the mean time spent studying for the exam was 7.74 hours and the standard deviation of study times was 3.10 hours. For purposes of this exercise, assume that it is reasonable to regard this sample as representative of students taking introductory psychology at this university.
Required:
Construct a 95% confidence interval to estimate μ, the mean time spent studying for the final exam for students taking introductory psychology at this university.
Answers
Answer:
The 95% confidence interval to estimate μ is between 7.45 hours and 8.03 hours.
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
[tex]M = 1.96\frac{3.1}{\sqrt{451}} = 0.29[/tex]
The lower end of the interval is the sample mean subtracted by M. So it is 7.74 - 0.29 = 7.45 hours
The upper end of the interval is the sample mean added to M. So it is 7.74 + 0.29 = 8.03 hours
The 95% confidence interval to estimate μ is between 7.45 hours and 8.03 hours.
A random sample of students was surveyed on what they eat for lunch at school. The results are shown in the table
below.
Lunch Item
Number of Students
Pizza
52
Salad
26
Burger
30
Chicken Sandwich
48
Brought lunch from home
44
If the school has 1,000 students, about how many students can the cafeteria expect to buy pizza?
208
1,000
260
52
Answers
Answer:
260
Step-by-step explanation:
you would divide 52/200 because all the numbers added up is 200 and it comes out to 0.26 and the original number of students they wanted is 1,000 so look at those zeros and move the decimal 3 times and add the zero in the empty space to get 260.
A ratio shows us the number of times a number contains another number. The number of students the cafeteria should expect to buy pizza is 260.
What is a Ratio?A ratio shows us the number of times a number contains another number.
The ratio of the number of students to the number of total students can be written as,
Ratio = (Number of students)/(Number of total students)
Ratio = 52/(52+26+30+48+44) = 52/200
Now, the same ratio is applicable to 1000 students, therefore, the ratio will be,
Number of students who prefer pizza = 1000 × (52/200) = 260
Hence, the number of students the cafeteria should expect to buy pizza is 260.
Learn more about Ratios:
https://brainly.com/question/1504221
#SPJ2
Whats 9x6 pls helpppppllll
Answers
Answer:
54
Step-by-step explanation:
Por favor ayúdenme??
A
B
C
D
Answers
Answer:
ITS B!!! AY
Step-by-step explanation:
Is 40/25 equivalent to 32/20
Answers
Answer:
Yes, 40/25 is equivalent to 32/20.
Answer:
Yes
Step-by-step explanation:
Find a common denominator, so you could do 100. Multiply 40/25 by 4 to get 160/100. Then to get the other denomination to 100 multiply by 5, so 32/20 = 160/100
The shape shown on the coordinate plane is rotated about the y-axis.
What is the shape of the solid created by the rotation?
Answers
Answer:
Cone, radius = 4, height = 7
Step-by-step explanation:
The point (4, 0) will spin around the y-axis, forming the base of the cone. The point (0, 7) will not move--it's point of the cone.
Find the circumference of the circle and round to the nearest tenth
Answers
Answer: 13.8
Step-by-step explanation: (3.14)(4.4) round to the nearest tenth
⚠️URGENT PLS HELP
LINKS WILL BE REPORTED
Answers
Answer:
e and c
Step-by-step explanation:
Ted jogged a total of 11.2 miles in 4 days. He jogged the same distance each day
Part A
How far did he jog each day? Enter your answer in the box,
2.8
milos
00:00
Part B
How many total miles would Ted jog if he continued to jog the same number of miles each day for 6 days? Enter your answer in the box
Answers
Answer:
Part A: 2.8 miles
Part B: 16.8 miles
Step-by-step explanation:
First, solve for how many miles Ted jogged in 1 day:
Variable x = number of miles
11.2/4 = x/1
Cross multiply
11.2 × 1 = 4 × x
11.2 = 4x
Divide both sides by 4
2.8 = x
He jogged 2.8 miles every day.
To find how many miles Ted would jog in 6 days, simply multiply his miles per day by the number of days he will jog:
2.8 miles × 6 days = 16.8 miles in 6 days
Simplify the expression Z^0⋅(Z^2⋅Z^−5)^4 using positive exponents
possible answers:
a.)Z^81
b.) 0
c.) 1/Z^12
d.) 1/Z^40
Answers
Could someone verify this answer if you don’t know the answer don’t say anything I don’t want to download the answer if you can’t tell me don’t say anything the question says find the area of the compound figure
Answers
Answer:
288
Step-by-step explanation:
8 x 3 x 3 x 6 = 288
The rectangle can be sectioned into two, with one of the areas being 3x8=24 and the other 3x6=18, add those together 24+18= 40cm
Just need the answer
Answers
Answer:
It seems no one can eat just one potato ship
Step-by-step explanation:
WORTH 20 POINTS!!
Zoe is starting her own snow plowing business. Zoey thinks she will do a better job than her competitors, so she thinks she can charge $11 per hour. If she knows she will only be able to work 40.25 hours per week, how much money will she earn each week?
Answers
Answer: 442.75
Step-by-step explanation:
40.25 * 11 = 442.75
Hope this helps!
The sides of a triangle are in the ratio 1: 2: 4. The difference between the longest side
and the shortest side is 84 cm. What is the perimeter of the triangle?
Answers
The sides of a triangle are in the ratio 1 : 2 : 4. The difference between the longest side and the shortest side is 84 cm. What is the perimeter of the triangle ?
Solution:-The sides of a triangle are in the ratio 1: 2: 4. (Given)
Let the three sides of a triangle be x, 2x and 4x respectively.
So,
ATQ ,
4x - x = 84
3x = 84
x = [tex] \bf \frac{84}{3} [/tex]
x = 28[tex] \therefore [/tex] Longest side = 4x = 4 × 28 = 112 cm.
Shortest side = x = 28 cm.
And, the other side = 2x = 2 × 28 = 56 cm
Now, we have to find the perimeter of the triangle.
Hence, Perimeter of the triangle = (112 + 56 + 28) cm = 196 cm.
The perimeter of the triangle is 196 cm. [Answer]sing the quadratic formula to solve x2 + 20 = 2x, what are the values of x?
Answers
Answer:
x = 1 ± i √ 19
Step-by-step explanation:
x = 1 ± i √ 19
Can someone plz help me with my question I will pAaay you
Answers
Answer:
sure what is it
Step-by-step explanation:
Well, it depends on the question!!
(comment it if you need me to answer it)
5 Show
for
on the number line below.
7/5 - 5/5 on the number line
Answers
Answer:
2/5
<|----|----O----|----|----|----|----|----|-> *scale of 1/5 per |
0 1/5 2/5 3/5 4/5 5/5 6/5 7/5
Step-by-step explanation:
7/5 - 5/5 = 2/5
Preform the following calculations (+10) + (-45)
Answers
Answer:
Step 1: Find out what 10 to the 5th power is equal to. it = 100,000
Step 2: Multiply 100,000 by 10
Step 3: your answer = 1,000,000
Answer:
-35
Step-by-step explanation:
I know y’all are smarter than me helpp me please
Answers
Answer:
(b)
Step-by-step explanation:
Given
A roll of a six sided die
Required
Which of the options is true
A) P(Even) = 1/4 and P(Odd) = 3/4
In a die, we have:
[tex]S = \{1,2,3,4,5,6\}[/tex] -- sample space
[tex]E = \{2,4,6\}[/tex] --- Even
[tex]O = \{1,3,5\}[/tex] -- Odd
The probability of even is the number of even sides over total.
i.e.
[tex]P(Even) = 3/6[/tex]
[tex]P(Odd) = 3/6[/tex]
Hence, (a) is incorrect
(b) A) P(Even) = 1/2 and P(Odd) = 3/2
In (a), we have:
[tex]P(Even) = 3/6[/tex]
[tex]P(Odd) = 3/6[/tex]
Simplify each
[tex]P(Even) = 1/2[/tex]
[tex]P(Odd) = 1/2[/tex]
Hence (b) is true
Since (b) is true, (c) and (d) are false
At Ralphs Italian Ices, 145 sundaes were sold in June. Sales were up 23% in July, How many sundaes were sold in July?
Answers
To calculate a percentage, we convert to a decimal by dividing by 100. So 23% = 0.23
145 x 0.23 = 33.35 This is how many more sundaes were sold in July than June. We need to add the 145 sold in June to the increased number to find July’s total.
145 + 33.35 = 178.35
You can’t sell .035/ roughly a third of a sundae, so we round to the whole number.
State the quadrant or axis the point lies in (9, -10)
Answers
A construction worker earned $64 in a week. If he worked eight hours in one week, how much money did he earn per hour?
Answers
Answer:
X=8
Step-by-step explanation:
64 Divided by Eight equals Eight.
Because he worked eight hours that week and earned $64 so divide that up by eight then you got your answer.
Pls help! And I will mark you as brainlist im not joking!
Answers
Answer:
[tex]third \: answer \\ if \: f(x) < 0 \\ - 6 < x < 2[/tex]
product is to multiplications as quotient is to