Answer:
131.2 ;
12.8 ;
(118.4, 144)
Step-by-step explanation:
Given :
X = 131.2, s=55 , and n= 50
Point estimate of the mean :
Since, sample size is large (n > 30) ; the sample mean = population mean according to the center limit theorem :
Margin of Error = Zcritical * s / sqrt(n)
Zcritical at 90% = 1.645
Margin of Error : 1.645 * (55 / sqrt(50))
Margin of Error : 1.645 * 7.7781745
Margin of Error = 12.795097
Margin of Error = 12.8
The confidence interval (C.I) :
C.I = x ± margin of error
C. I = 131.2 ± 12.8
(131.2 - 12.8) ; (131.2 + 12.8)
(118.4, 144)
You and a friend are each driving a car in opposite directions. You both leave your house at the same time. If you are traveling at “a” miles an hour and your friend is traveling at “b” miles an hour, make up a formula to show how far apart the two cars are after 5 hours. Let “Y” represent the total distance.
Please help i need the formula too
Answer:
y = a - b(5) i think that's it
Step-by-step explanation:
15x²Y - 10xy^3
plz help
Answer:
5 x (3 x Y - 2y^3)
x(15 x Y - 10 y^3)
5 (y^3 - 3x Y )^ - 5y^6
-----------------------------------
3Y 3Y
X= 0 Y= 0
HOPE THIS HELPSS
Sharlene wraps a cylindrical package that has a height of 15 inches and
a radius of 3 inches. What is the package’s surface area?
Answer:
339.3 cubic inches
Step-by-step explanation:
SA (cyl) = 2πr² + 2πrh
SA = 2(3²)π + 2(3)(15)π
SA = 18π + 90π
SA = 108π
SA ≈ 339.3 in³
Lily wants to ride her bicycle 43 miles this week. She has already ridden 16 miles. If she rides for 6 more days, what is the average number of miles she would have to ride each day to meet her goal?
Answer:
43-16=miles left to go. divide that by the 6 days left.
43-16= 27 miles.
27÷6= 4.5 miles per day
Answer:
4 1/2 miles
Step-by-step explanation:
43 - 16 = 27 miles remaining
27/6 = 4 3/6 or 4 1/2
2\3 of 5 maybe use a tape diagram
Can someone please help me with math.
Answer:
D
Step-by-step explanation:
That is a negative correlation. As x increases, y decreases. Notice that as you read from left to right, the points are going down which means negative.
I NEED THE ANSWER please
Answer:
[tex]1 \frac{2}{5} [/tex]
Step-by-step explanation:
[tex]4 - 2 \frac{3}{5} [/tex]
[tex] = 4 - \frac{13}{5} [/tex]
[tex] = \frac{20 - 13}{5} [/tex]
[tex] = \frac{7}{5} [/tex]
[tex] = 1 \frac{2}{5} [/tex]
please hurry and answer
Answer:
20
Step-by-step explanation:
Kyala =x+24
ze=x
in 2 years=2 (x+24)=2x+48
x= 2x+48
x=48
48-28=20
Please someone help ASAP
Mrs. Tirado picked 5/6 pounds of lettuce from her garden. Mrs. Rampulla picked 2/3 less pounds than Mrs. Tirado. How much lettuce did they pick altogether?
Step-by-step explanation:
Total amount of lettuce = x pounds
Mrs. Tirado picked 5/6 pounds of lettuce from her garden.
5 / 6 * Total amount = 5/6 x
Mrs. Rampulla picked 2/3 less pounds than Mrs. Tirado.
Mrs. Rampulla = 2/3 (Mrs. Tirado) = 2/3 (5/6 x)
Mrs. Rampulla = 5/9 x
How much lettuce did they pick altogether?
Mrs. Rampulla + Mrs. Tirado
5/9 x + 5/6 x
(25/18) x pounds
A triangular prism is covered with the foil label. The label does not cover the two ends how much foil is needed to cover the prism?
Answer:
Step-by-step explanation:
Can someone help me pls can you explain and tell me what I need to do aslo if it’s possible you can put a picture also solve it pls ?
HELP!!
Which side lengths form a right triangle?
Choose all answers that apply:
4,8, 12
2, V5,3
2, 2, V8
A)The function has two x-intercepts
B)The y-Intercept is at (0,7)
C)The maximum value is 1
D)The minimum value is 1
E) The range includes all real numbers
Combine like terms for the following expression:
-3x +14 - 11+ 11x
Write in Standard form:
2p^2 + 7 = -p
<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3
Answer:
2p^2 + p + 7 = 0
<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3
The area of a rectangle is 10 square inches. If the length of the rectangle is 3 more
than the width, find the length and width.
Answer:
its 2 and 5 ma brotha
Step-by-step explanation:
see 2 + 3 is 5
2 * 5 = 10
if you need anymore help.....
I GOTCHU
Santosh spent $200, before tax, on a DVD player and DVDs. The player cost $120, new DVDs cost $15 and used DVDs cost $5. Santosh purchased the same number of new and uses DVDs. Write and solve an equation to find the number of each type of DVD Santosh purchased.
Answer:
Santosh purchased 4 new and 4 used DVDs.
Step-by-step explanation:
From the information given, as you know that Santosh spent $200 and that the DVD player cost $120, you can say that the new and used DVDs cost $80, which can be expressed as:
15x+5y=80, where:
x refers to the number of new DVDs
y refers to the number of used DVDs
Now, as the statement indicates that Santosh purchased the same number of new and used DVDs, this means that x is equal to y and you can replace y with x and solve for x:
15x+5x=80
20x=80
x=80/20
x=4
According to this, the answer is that Santosh purchased 4 new and 4 used DVDs.
Thirty students at Eastside High School took the SAT on the same Saturday. Their raw scores are given next. 1,450 1,620 1,800 1,740 1,650 1,800 2,010 1,780 1,840 1,490 1,620 1,480 2,390 1,640 1,830 1,710 1,900 1,910 1,950 1,820 1,590 2,350 2,260 1,870 1,530 1,950 2,000 1,830 1,980 2,100 Consider a frequency distribution of the data that groups the data in classes of 1400 up to 1600, 1600 up to 1800, 1800 up to 2000, and so on. How many students scored at least 1700 but less than 2100
Answer:
Number of students who scored atleast 1700 but less Than 2100 = 17
Step-by-step explanation:
Given the data :
1,450 1,620 1,800 1,740 1,650 1,800 2,010 1,780 1,840 1,490 1,620 1,480 2,390 1,640 1,830 1,710 1,900 1,910 1,950 1,820 1,590 2,350 2,260 1,870 1,530 1,950 2,000 1,830 1,980 2,100
Class interval __ Frequency
1400 - 1599 ____ 5
1600 - 1799 ____ 7
1800 - 1999 ____12
2000 - 2199 ___ 3
2200 - 2399 ___ 3
Number of students who scored atleast 1700 but less Than 2100 = 17
Help! The answer must me exact! Will rate you if correct!!
Answer:
The Correct Answer is 7.071
Step-by-step explanation:
Trust me, if its wrong report me, if its right mark me brinaliest pls
-3( 3y - 5 ) + 7( 11 + 6y )
Answer:
= 33y+92
Step-by-step explanation:
i hope this helps :)
Answer: 33y+92 Hope this help :)
Of a total of 422 indigenous and immigrant languages spoken in the united states, 10 more spoken languages are indigenous than are immigrant. How many indigenous languages and how many immigrant languages are spoken in the united states?
Answer: 63
Step-by-step explanation: On Edge!!!!!!!!!
Two angles in a triangle measure 102° and 670. What is the measure of the third angle?
0 110
0789
1139
O 169°
Step-by-step explanation:
step 1. wow! 670° I think you mean 67°
step 2. the 3 internal angles of a triangle add up to 180°. let x be the third angle
step 3. x + 102 + 67 = 180
step 4. x + 169 = 180
step 5. x = 11°.
Help please I beg show work
A85
B 21.1
C 64.6
D 35.4
Given:
Total number of students: T = 147
Number of students taking math : M = 95
Number of students taking science : S = 73
Number of students taking both math and science = 52
To find:
The theoretical probability of randomly choosing a student who is taking math.
Solution:
It is given that,
Total number of students (T) = 147
Number of students taking math (M) = 95
So, he theoretical probability of randomly choosing a student who is taking math is:
[tex]P(M)=\dfrac{\text{Number of students taking math}}{\text{Total number of students}}\times 100\%[/tex]
[tex]P(M)=\dfrac{95}{147}\times 100\%[/tex]
[tex]P(M)=64.62585\%[/tex]
[tex]P(M)\approx 64.6\%[/tex]
64.6% is the theoretical probability of randomly choosing a student who is taking math.
Hence, option C is correct.
Can someone help me
the first one
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it takes mike 18 minute to read 4 pages of a book how long does it take for him to finish read a 30 pages?
Answer:
135 minutes / "2 hr. and 15 minutes
Step-by-step explanation:
In August, James begins school shopping for his triplet daughters. One day, he bought 10 pairs of socks for $2.50 each and 3 pairs of shoes for d dollars each. He spent a total of $135.97. Write and solve an equation to find the cost of one pair of shoes.
Let ___ =
Equation:
Solution:
Answer:
2.50*10 350+d
Step-by-step explanation:
thats the answer up belowRace organizers want to survey the participating runners on the difficulty of the running course. Which of the following most effectively uses cluster sampling?
Separate the runners into men and women, then randomly select 20 men and 20 women.
Organize the runners into groups (elite runners, fast runners, moderate runners, and walkers). Randomly select a group, and survey all the runners in that group.
Put the same number of marbles as runners into a bag, with 20 of the marbles being red. Have each runner select a marble from a bag at the finish line. If they choose a red marble, they take the survey.
Place the runners into groups based on the seconds part of their finishing time (0:00–0:05, 0:06–0:10, etc.). Randomly select 2 of these groups, and survey every runner within the chosen groups.
Answer: Place the runners into groups based on the seconds part of their finishing time (0:00–0:05, 0:06–0:10, etc.). Randomly select 2 of these groups, and survey every runner within the chosen groups.
Step-by-step explanation: Just got it right on Edge
Which ordered pair is a solution to the graphed inequality?
Given:
The graph of a system of inequalities.
To find:
The ordered pair which is a solution to the graphed inequality.
Solution:
The boundary lines are:
[tex]x-2y=4[/tex]
[tex]2x-y=4[/tex]
From the given graph it is clear that only point (3,1) lies in the shaded region.
Points (2,-1) and (4,0) lie on the boundary line [tex]x-2y=4[/tex] but the boundary line is dotted. It means the points on the line are not in the solution set.
point (0,-1) does not belong to the shaded region.
Therefore, the correct option is A.
May someone please show the full steps please! I will mark brainlist. I’m having a hard time understanding this.
Answer:
x=12 y=6 m(ABC)=102 m(BCD)=78 m(DAB)=78
Step-by-step explanation:
alright mate so lets start with the properties of parallelogram:
Opposite angles are equal Sum of any two adjacent angles is 180degree(there are more but we will use those here)
so lets start with 1st property for help:m(BCD) is opposite angle for m(DAB) so those equations should be equal each other and this will give us a hint
[tex]6x+y=4x+5y\\2x=4y\\x=2y[/tex] i just changed the places of x to be in one place and s same for y then divided both sides by 2
Now lets use the 2nd property (sum of two adjacent angles is 180)m(ABC) is adjacent to m(BCD) so
[tex](7x+3y)+(4x+5y)=180[/tex] add x to x and y to y it will be
[tex]11x+8y=180\\[/tex]
Now we going to use the first one x=2y in this equation so we can deal with one variablereplace x with 2y so 11x will be 22y
[tex]22y+8y=180\\30y=180\\y=6[/tex] added the y to y and then divided both sides by 30
[tex]x=2y \\x=2*6=12[/tex]
now we got x and y
then lets start to substitute every x and y in the equations
[tex]7x+3y\\7*12+3*6=102\\[/tex] [tex]4x+5y\\4*12+5*6=78[/tex]3.[tex]6x+y\\6*12+6=78[/tex]
now we got everthing hope i helped you sorry also for being late it toook alot to type it so you can understand