Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.
What is the mean number of minutes spent on the phone?
Explanation:
The data from the stem-and-leaf plot is:
10,
24,25,26,
30,30,32,33,
40,45,46
Add up those values
10+24+25+26+30+30+32+33+40+45+46 = 341
Then divide over n = 11 which is the sample size.
341/11 = 31 is the arithmetic mean.
Answer:
341/11 = 31 is the arithmetic mean.
Step-by-step explanation:
Find the value of a,b and c from the following figures .
Answer:
a=c=30⁰, b=150⁰.
Step-by-step explanation:
angle R is 120⁰ (vertically opposite angle)
so, for vertically opposite angle c we have,
30⁰+120⁰+c=180⁰
Hence, c=30⁰.
angle a = angle c = 30⁰ (corresponding angle).
180⁰-c = b (from figure being straight line)
or, b=180⁰-30⁰
hence, b=150⁰
Calculate the slope of a line that goes through the points: (-4, 0) & (12, 2). Leave your solution as a simplified (improper) fraction.
Before you multiply or divide a fraction by a mixed number, you have to make sure they are both in the same___________?
Answer:
Step-by-step explanation:
form. Meaning you need make both fractions improper
A principal is organizing a field trip for more than 300 students. She has already arranged the transportation for 220 students. Each school bus has the capacity to transport 40 students. Which of the following inequalities could be used to solve for x, the number of school buses still needed to transport all of the students?
A. 40x - 220 > 300
B. 40x + 220 > 300
C. 40x > 520
D. 40x > 300
Answer:
B is your answer llsls
Step-by-step explanation:
jejdjdhd
Some researchers needed to estimate how many catfish were in a local river, so they marked 280 catfish with tags. Later, the researchers trapped 540 catfish, of which 27 had tags. To the nearest whole number, what is the best estimate for the catfish population?
(13 points if solved:)
* Please Answer Properly*
Answer:
793 (ig)
Step-by-step explanation:
so take the 540 and subtract it by 27 then u will get the number of catfishes with no tags, then add the difference with 280 and u'll get the population hope it helps :)
i need help with this one
number one please no links
Which expression is equivalent to 2E-3/2E-5
a. 2E2
b. 1/2E2
c. 2E8
d. 1/2E8
E=exponent
Answer:
a 2E2
Step-by-step explanation:
\(\frac{2^{-3} }{2^{-5} }\) When powers have the same bases and you are dividing, you subtract the exponents.
\(2^{-3 - -5}\) = \(2^{-3+5}\) = \(2^{2}\)
Do you have to put your answer^{2}\) when finding the circumference of a circle?
I will give Brainliest!
Answer: nope
Step-by-step explanation:
Answer: No
Step-by-step explanation:
You only have to put ^2 when finding the area
This is due tomorrow and i have no idea what to do
Answer: 53°
Step-by-step explanation: as they are making linear pair of angles so sum is 180
Answer:
x=53
Step-by-step explanation:
Combine like terms
X. 2x + 21= 3x + 21
straight line equals 180 so
180= 3x + 21
180 - 21 = 159
159= 3x
159/3= 53
X= 53
check your answers
X = 53
2 x 53 + 21
106 + 21 = 127
127 + 53= 180
So x=53 is correct
PLease help quick AaaaAh will give brainliest
Answer:
A. $3.29
B. $49.35
C. 4
Step-by-step explanation:
The international space station has small cupboards that are used for storage. A cupboard is drawn below (redrew by me cause I'm using chrome book and computer)
1. What is a formula that can be used to find the area of one triangular section of the door?
2. How do you know the formula will work?
Answer:
\(A=\frac{ab}{2}\) or \(A = a *\sqrt{c^2-a^2} /2\)
Step-by-step explanation:
Depending on the values you take depends on the equation you would use to solve for the area of a right triangle(the first answer accounts for measuring both arms(the sides connected to the 90 degree angle(a and b)), where as the second answer accounts for using the hypotenuse and one of the arms). That means that a 90 degree angle is involved, or as illustrated here, the square in the bottom right corner. If this were a non-right angle triangle, a different formula utilizing the height of the triangle would be used instead.
\(A = \frac{h_{b}+b}{2}\)
Since the right angle exists, a height is already given using one of the arms of the triangle in its place. We can also confirm it is a triangle by adding up all degrees of the triangle, in which it would equal 180 degrees confirming it is indeed a triangle as well.
By using trigonometric relations we will see that the area is:
How to find the area of one triangular section?
Remember that the area of a right triangle is equal to the product between the cathetus divided by 2.
Sadly, here we don't have the measures of any sides of the triangle, so getting the actual area is impossible, but if we assume that some dimension is given (like the height, let's say that is h).
h is the cathetus adjacent to the 60° angle, then the other cathetus (the bottom one) is given by:
tan(60°) = x/h
x = tan(60°)*h
Then our two catheti are h and tan(60°)*h.
This means that the area will be:
Here we only used trigonometric properties, so this area will work for any height given (always that the value of h is the cathetus adjacent to the 60° angle).
If you want to learn more about right triangles:
brainly.com/question/2217700
#SPJ1
Please help me. All I get is decimal problems that aren't helping at all.
A math team is working through a set of puzzles. The following diagram describes the numbers of puzzles they've started and not yet started.
Answer:2:5
Step-by-step explanation: We can count the equal parts in the diagram to find the ratio of puzzles started to total puzzles, but that ratio is not one of the choices.
To make an equivalent ratio, we multiply both values in the first ratio by the same number. We can also divide both values by the same number.
Identifying the given ratio
6 + 9 = 15
There are 6 puzzles started for every 15 total puzzles.
The answer choices use smaller numbers. Let's create an equivalent ratio by dividing 6 and 15 by the same number.
Creating an equivalent ratio
We can divide 6 and 15 by 3 to get 2 and 5
Yes, the ratio 2:5 is equivalent to 6:15!
The ratio of puzzles started to total puzzles answers is 2:5.
Hope it helps !)
I added screenshot this time
An automated car wash can wash 6 cars in 1 hour.
How long would it take to wash 18 cars?
Responses
A-2 hours
B-3 hours
C-4 hours
D-5 hours
Answer:
B-3 hours
Step-by-step explanation:
It's actually effortless. you divide the number of cars by six. Mark me brainliest?
PLEASE HELP ME! I haven't been able to figure out how to find the answer and it's due soon! 15 points and brainleist if you explain in depth!
I wish i could help you but i can't
sorry
Every day, Ed's orange juice stand uses 2/3 of a bag of oranges. How many days will 2 2/3 bags of oranges last?
Answer:
4 days
Step-by-step explanation:
2 2/3 ÷ 2/3
2 2/3 = \(\frac{3}{3}\) + \(\frac{3}{3}\) + \(\frac{2}{3}\) = \(\frac{8}{3}\) (\(\frac{3}{3}\) is another name for 1)
\(\frac{8}{3}\) ÷ \(\frac{2}{3}\) = \(\frac{4}{1}\) = 4
Helping in the name of Jesus.
Kayleen buys one 3 -pound bag of cat food. Her cat eats about 3/4 of a pound every week. How many weeks does one bag last?
Answer: 4 weeks
Step-by-step explanation:
To find the answer to this question, we will divide 3 by 3/4 to find the number of weeks one bag will last.
3 / (3/4) = 3 * (4/3) = 12/3 = 4 weeks
One 3 -pound bag will last the cat 4 weeks.
Write your question here. We can't read your mind. Yet.
Answer:
38 right-handed players
Step-by-step explanation:
first, let's find 10% of 95. 95 divided by 10 = 9.5. now, we multiply 9.5 times 4 because 9.5 is 10% and we need to find out 40%. 9.5*4=38.
Hello!
0.123 repeating as a simplified fraction
50 POINTS! GIVING BRAINLIEST!
Answer:
1) a = 16.38 (nearest hundredth)
b = 11.47 (nearest hundredth)
2) b = 14.14 (nearest hundredth)
c = 15.36 (nearest hundredth)
Step-by-step explanation:
Sine Rule
\(\sf \dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}\)
(where A, B and C are the angles and a, b and c are the sides opposite the angles)
Question 1
The interior angles of a triangle sum to 180°
⇒ m∠B = 180° - 90° - 55° = 35°
Given:
A = 55°B = 35°C = 90°c = 20\(\implies \sf \dfrac{a}{\sin 55}=\dfrac{b}{\sin 35}=\dfrac{20}{\sin 90}\)
\(\implies \sf a=\dfrac{20\sin 55}{\sin 90}=16.38304089...\)
\(\implies \sf b=\dfrac{20\sin 35}{\sin 90}=11.47152873...\)
Question 2
The interior angles of a triangle sum to 180°
⇒ m∠B = 180° - 90° - 23° = 67°
Given:
A = 23°B = 67°C = 90°a = 6\(\implies \sf \dfrac{6}{\sin 23}=\dfrac{b}{\sin 67}=\dfrac{c}{\sin 90}\)
\(\implies \sf b=\dfrac{6\sin 67}{\sin 23}=14.13511419...\)
\(\implies \sf c=\dfrac{6\sin 90}{\sin 23}=15.35582799...\)
help me again plsss //////////////
Answer:
I believe it's A.
Step-by-step explanation:
The formula for the perimeter of a rectangle: 2(l + w)
Since we have not found x, you would assume it hasn't been doubled yet by the 2. Since the width = 14, it is doubled to 28.
Next, we know from looking at the formula that l and w are added together, so inside the brackets is an addition problem. ( + 28)
Since we know that l = x and l has to be doubled, it will be = (2x +)
If we combine those two equations together it is =
2x + 28 = 48
The price of a toolbox at Lowe's is $45 but increases to $58 on Monday. What is the percent of increase in price? (Round to the nearest whole percent) *
Answer: 29%
Step-by-step explanation: 58-45 13/45=29
Select the statement that correctly explains how to use the benchmark fraction one half to compare the fractions three eighths and six tenths.
three eighths is greater than six tenths because three eighths is greater than one half and six tenths is less than one half.
three eighths is equal to six tenths because three eighths is equal to one half and six tenths is equal to one half.
six tenths is less than three eighths because six tenths is less than one half and three eighths is greater than one half.
six tenths is greater than three eighths because six tenths is greater than one half and three eighths is less than one half.
Answer:
Step-by-step explanation:
b
How would you solve this?
(problem in image)
Answer: 18 Fruit Baskets
Step-by-step explanation:
He would need to sell 18 fruit baskets and 2 pencils to make the total $300.
the question in beloew isnide the picture :)
Answer:
72 seconds
Step-by-step explanation:
To reach 50 feet, use the time formula to get the total time used, so: time = (0-18) / -0.25
-18 / -0.25
= 72 seconds
A poster storage tube in the shape of a cylinder has a diameter of 3.5 inches and a volume of 122.5 (pi) cubic inches. What is the height of the poster storage tube in inches. What is the height of the poster storage tube in inches?
Answer:
the hieght is 12.7 inches
Step-by-step explanation:
v=122.5
r=d/2
3.5/2=r
r=1.75
v=pir²h
122.5 =piR²h
122.5=pie1.75²h
okay so frist solve for r sense exponents come before multiplication in bedmask
122.5 =pi3 .06g
so then it's pie times r
122.5=9.61 *h
122.5/9.61=h
12.7=h
Answer:h≈12.73in
d Diameter
3.5
in
V Volume
122.5
in³
h
r
h
r
r
h
A
b
Using the formula
V=π(d
2)2h
Solving forh
h=V
π(d
2)2=122.5
π·(3.5
2)2≈12.7324in
Step-by-step explanation:
PLEASE HELPPPPP MEEEEE
ALLAH IS ALL KNOWING AND ALL HEARING
Step-by-step explanation:
"There is no God but Allah, and Muhammad is his messenger." This is the basic statement of the Islamic faith: anyone who cannot recite this wholeheartedly is not a Muslim. When a Muslim recites this they proclaim: That Allah is the only God, and that Muhammad is his prophet