Answer:
21.
Step-by-step explanation:
Since there were five teams entered in a competition, and each team consisted of either only boys or only girls, with the number of team members being 9, 15, 17, 19 and 21 members, if after one team of girls had been knocked out of the competition, the number of girls still competing was three times the number of boys, to determine how many girls were in the team that was eliminated, the following calculation must be performed:
9 + 15 + 17 + 19 = 60/4 = 15
9 + 15 + 17 + 21 = 62/4 = 15.5
9 + 15 + 19 + 21 = 64/4 = 16
9 + 17 + 19 + 21 = 66/4 = 16.5
15 + 17 + 19 + 21 = 72/4 = 18
Thus, since 15 x 3 equals 45, and 45 plus 15 equals 60, the number of girls on the team that was eliminated was 21.
Which fraction is equivalent to the whole number 8?
Answer:
16/2, 32/4, 64/8 ...
Step-by-step explanation:
There are multiple fractions that equal 8
find the value of x help plz I’ll mark brainiest
Answer:
x = 22
Step-by-step explanation:
Answer:
lol
Step-by-step explanation:
A form of radium decays exponentially with a half-life of 20 years. This means that 50% will be gone every 20 years. A human can only withstand an exposure of 5 grams of this radium but 150 grams has leaked into the air.
Part A: Write an equation to model the exponential decay of this 150 grams of this form of radium.
Part B: A scientist claims that the area will e safe for humans after 100 years. Do you agree? Verify your answer mathematically and explain why you agree.
the figure below shows a shaded rectangular region inside a large rectangle
(pic)
What is the probability that a point chosen inside the large rectangle is NOT in the shaded region
Answer:
42% i hope its right if not sorry
Step-by-step explanation:
Find the slope of the line that passes through (9, 8) and (4, 6).
Simplify your answer and write it as a proper fraction, improper fraction, or integer.
Answer:
Step-by-step explanation:
90
Answer:
it's 2/5 (0.4)
Step-by-step explanation:
y-y1
-------
x-x1
8-6
----
9-4
2
--
5 = 2/5 =0.4
Guys I need help plz! ( it would mean a lot if u help )
Answer:
━☆ﾟ.*･｡ﾟX>6
Step-by-step explanation:
Here,X is greater than 6
Answer:
x > 6
Hope this helped <3
Simplify to create an equivalent expression. 7(2 + 2x) + (x + 2) x 6 =
Answer:
20x + 26
Step-by-step explanation:
Rewrite the equation to make distributing easier:
7(2 + 2x) + (x + 2) x 6
7(2 + 2x) + 6(x + 2)
Distribute the 7 and 6 to each set of parentheses:
14 + 14x + 6x + 12
Add like terms:
20x + 26
So, the equivalent expression is 20x + 26
!!!!!!!!!!!!!!!!!!!nossa
On what day of the year 2009 was the year 250 000 minutes old? Give the month and day?
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
22nd Junethanks hope it helpsThe day that would be 250, 000 minutes old for the year 2009 would be:
22nd June
Find the day of the yearGiven that,
No. of Minutes [tex]= 250, 000[/tex] minutes
We know that,
No. of minutes in an hour [tex]= 60[/tex] minutes
No. of hours in a day [tex]= 24[/tex] hours
So,
The number of minutes in a day [tex]= 24[/tex] × [tex]60[/tex]
[tex]= 1440[/tex] days
Now,
The number of days in 250, 000 minutes [tex]= 250,000/1440[/tex]
[tex]= 173.61[/tex] days
Beginning from January 1,
31(January) + 28(February) + 31(March) + 30(April) + 31(May) + 22(June)
= 173
∵ 22nd June as it's not a leap year.
Thus, the above response is correct.
Learn more about "Calendar" here:
brainly.com/question/4657906
10x + 4y < 12
8x - 3y > 20
Answer:
I've attached a pic how the graph will look like
Answered by GAUTHMATH
70PTS HELP ME OUT 2)
Answer:
ABCD is a cyclic quadrilateral in the circle.which sum of two opposite angle is 180
What is 10+10
...........
Answer:
20
Step-by-step explanation:
a metal rod will be cut into pieces that are each 1/48 meters long. The rod is 3/8 meters long. How many pieces will be made from the rod?
Answer:
18 pieces
Step-by-step explanation:
3/8 ÷ 1/48 = 18
1. What is a solution to this inequality?x + 5 s 13 * O 8 O9 O 11 O 12
After 4 years you have 5300 what is the initial deposit if the account pays 2.5% annual interest compounded continuously
Answer:
Initial deposit P = 4,801 (Approx.)
Step-by-step explanation:
Given:
Amount after 4 year = 5,300
Number of year = 4 year
Rate = 2.5% = 0.025
Find:
Initial deposit
Computation:
A = P[1+r]ⁿ
5,300 = P[1+0.025]⁴
5,300 = P[1.025]⁴
5,300 = P[1.1038]
Initial deposit P = 4,801 (Approx.)
The population of a city has decreased by 33% since it was last measured. If the current population is 13,400, what was the previous population?
0
Х
?
Continue
Answer:
1940.3
Step-by-step explanation:
The current population value is 13,400
Let the previous population be represented by y
The population of the city decreased by 33
Therefore the previous population can be calculated as follows
13400= y(100-33)/100
13400=( y×67)/100
13400= 100× 13400/67
= 100× 19.402
= 1,940.3
Hence the previous population is 1,940.3
What value of y makes the equation true?
-7/12 = y/-36
A -21
B 28
C -28
D 21
Answer:
D) 21
Step-by-step explanation:
y= -7/12× -36
or, y= -7×-3
or, y= 21
Answer:
D
Step-by-step explanation:
Given
[tex]\frac{-7}{12}[/tex] = [tex]\frac{y}{-36}[/tex] ( cross- multiply )
12y = 252 ( divide both sides by 12 )
y = 21 → D
helpppppppppppppppppppp me
Answer:
6x5=30
Step-by-step explanation:
30÷5=6
n=6
6×5=30
Adrianna has a garden where she measured the height of a sunflower plant. on the first day it was 1.25 m tall, after 2 weeks it grew by 0.32 m
WHAT IS THE HEIGHT OF THE SUNFLOWER PLANT?
pls answer will give brainlist
Answer:
The height of the sunflower plant is 1.57 meters.
Step-by-step explanation:
Initially, the height of the sunflower plant was of 1.25 m.
Then, it grew by 0.32 m, that is, we have to add 0.32 m to the height.
Sum of decimals:
Dot below dot, add normally. So
1.25
+0.32
---------
1.57
So
The height of the sunflower plant is 1.57 meters.
The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. A random sample of 12 employees reveals the following family dental expenses (in dollars): 115, 370, 250, 593, 540, 225, 177, 425, 318, 182, 275, and 228.
a.Construct a 90% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation.
b.
Construct a 95% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation.
c. Construct a 99% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation
Solution :
a). Given :
a = [tex]$0.1$[/tex],
chisquare with the [tex]$0.05$[/tex],
[tex]$df=11$[/tex] is [tex]$4.57$[/tex] (from the chisquare table)
Chisquare with the [tex]$0.95$[/tex], df = [tex]$11$[/tex] is [tex]$19.68$[/tex] (from chisquare table)
So 90% Cl is
[tex]$\left(\frac{v(n-1)\times s}{v19.68}, \frac{v(n-1)\times s}{v4.57}\right)$[/tex]
[tex]$=\frac{\sqrt{11}\times 147.928}{\sqrt{19.68}},\frac{\sqrt{11}\times 147.928}{\sqrt{4.57}}$[/tex]
[tex]$=(110.5947,229.5031)$[/tex]
b). Given :
a = [tex]$0.05$[/tex]
Chisquare with [tex]$0.025$[/tex]
df = [tex]$n-1=11$[/tex] is A, [tex]$3.82$[/tex]
Chisquare with [tex]$0.975$[/tex], df = 11 is [tex]$21.92$[/tex]
So, 95% Cl is
[tex]$\left(\frac{v(n-1)\times s}{v21.92}, \frac{v(n-1)\times s}{v3.82}\right)$[/tex]
[tex]$=\frac{\sqrt{11}\times 147.928}{\sqrt{21.92}},\frac{\sqrt{11}\times 147.928}{\sqrt{3.82}}$[/tex]
[tex]$=(104.7916,251.0239)$[/tex]
c). Given a = [tex]$0.01$[/tex], chisquare with [tex]$0.005$[/tex], df = [tex]$11$[/tex] is [tex]$2.6$[/tex]
Chisquare with [tex]$0.995$[/tex], df = [tex]$11$[/tex] is [tex]$26.76$[/tex]
So 99% CI is
[tex]$\left(\frac{v(n-1)\times s}{v26.76}, \frac{v(n-1)\times s}{v2.6}\right)$[/tex]
[tex]$=\frac{\sqrt{11}\times 147.928}{\sqrt{26.76}},\frac{\sqrt{11}\times 147.928}{\sqrt{2.6}}$[/tex]
[tex]$=(94.84265,304.2706)$[/tex]
what is the product of 5x2 and(2×2)
Answer:
5 x 2 = 10 2 x 2 = 4
Step-by-step explanation:
5 twice is 10
2 twice is 4
125^2x = 5^4x-4 solve for x
Answer:
x=-2
Step-by-step explanation:
[tex]125^{2x}=5^{4x-4}\\(5^3)^{2x}=5^{4x-4}\\5^{6x}=5^{4x-4}\\6x=4x-4\\6x-4x=-4\\2x=-4\\x=\frac{-4}{2}=-2[/tex]
Find the 89th term of the arithmetic sequence 25, 35, 45, ...
Answer:
905
Step-by-step explanation:
arithmetic sequence are in form
a(n)=a(0)+d(n-1)
a(0)=25
common difference: d=35-25=10
a(n)=25+10(n-1)
a(89)=25+10(88)=905
cuanto costara una sala que se anuncia en $7500, con el 30% de descuento mas 16% de IVA
Answer:
30 por ciento:2250
16 por ciento:1200
Step-by-step explanation:
sue has 20 biscuits in a tin
PRETTY PLEASE HELP ME! this is 4 a test and i’m rlly struggling :/
What is the perimeter of the rectangle in the coordinate plane? y 36 units 15 147 38 units 13+ 12+ 65 units 117 O 70 units
Answer:
38 units
Step-by-step explanation:
14 * 2 = 28
5 * 2 = 10
28 + 10 = 38
Mark me as brainliest, I am trying to level up.
what is h−(−2.22)=−7.851 someone please help me
Answer:
h=-10.071?
Step-by-step explanation:
Benin is sawing board to make a deck. What is the area of the deck?
Answer:
C. 108.5 square feet
Step-by-step explanation:
Area of a rectangle: length x width
Area of a triangle: (base x height)/2
First find the rectangle's area:
10ft x 7 ft
70ft^2
Find the right side triangle's area:
(7ft x 5ft)/2
35ft^2/2
17.5ft^2
Now find the left side triangle's area:
There is no base number included, but the other triangle has a base of 7ft. Considering the triangle is attached to a rectangle's side, we can conclude this triangle will have the same base because a rectangle's parallel side will always equal each other
(7ft x 6ft)/2
42ft^2/2
21ft^2
Finally, add all of these areas together
70ft^2 + 17.5ft^2 + 21ft^2
87.5ft^2 + 21ft^2
108.5ft^2
0.54 litres in cm ³
Answer:
540 cubic centimeters
Step-by-step explanation:
just move 0 on the other side
Hey there!
0.54 liters to ________ cm³
= 0.54 * 1,000
= 540
Therefore, your answer should be: 540 cm³
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Choose which scenario could be represented by the expression $14.99%
a) The cost if you purchase 14 t-shirts at a cost of x dollars each
b) The cost if you purchase x t-shirts at a cost of $14.99 each
C) The sum of 14.99 and x
d) T difference between 14.99 and x