Answers
[tex]\bf r=\sqrt{\cfrac{kt}{\pi (h_o-h)}}\qquad \begin{cases} h=0\\ r=0.875\\ h_o=6.5\\ k=0.04 \end{cases}\implies 0.875=\sqrt{\cfrac{0.04t}{\pi (6.5-0)}} \\\\\\ \textit{now we square both sides}\quad 0.875^2=\cfrac{0.04t}{65\pi }\implies 65\pi \cdot 0.875^2=0.04t \\\\\\ \cfrac{65\pi \cdot 0.875^2}{0.04}=t\implies \stackrel{minutes}{3908.58}\approx t[/tex]
which is 65 hours and 8 min and about 35 seconds. Or 2 days and 17 hours and 8 mins and 35 secs.
Related Questions
what is the solution of -3p+4<22?
Answers
4-22<3p
-18<3p
-18/3<p
-6<p
p>-6
Which function is a quadratic function? c(x) = 6x + 3x3 d(x) = x – 8x4 p(x) = –5x – x2 k(x) = 2x2 + 9x4
Answers
means highest power of variable is 2
c(x)=6x+3x^3
3rd degree, not quadratic
d(x)=x-8x^4,
4th degree, not quadratic
p(x)=-5x-x^2
2nd degree, it's quadratic
k(x)=2x^2+9x^4
4th degree, not quadratic
answer is [tex]p(x)=-5x-x^2[/tex]
Answer: –5x – x2
Step-by-step explanation:
edge.
15% of 20 is _____.
3
30
300
Answers
Hope this helped..
Answer:
It would be 3
Step-by-step explanation:
What is the value of x? 3/ 4 x+5− 1 /2 x=3 please help
Answers
What is the number that is one half of one quarter of one tenth of 400?
Answers
1/10 of 400 = 40
1/4 of 40 = 10
1/2 of 10 = 5
the number is 5
Your Turn: Find the measure of angle P below. Show your work. *
Answers
9x-9=180
9x=189
x=21
2x+5=P
2(21)+5= 47
P=47
The figure shows lines m, n and the line through points A And B, call it [tex]l_{AB}[/tex].
1. The angles ABC and CBP are "supplementary" angles, that is angles whose sum is 180°, because together they form one straight angle.
thus,
(2x+5°)+(7x-14°)=180°
9x-9°=180°
9x=189°
x=189°/9=21°.
2. Remark, m and n are parallel, otherwise we can say nothing about the measure of angle P
check the second picture, notice the F shape formed by CBP and P.
Angles CBP and P are called "angles F" or "corresponding angles".
Corresponding angles formed by a line cutting 2 parallel lines, are always congruent (that is equal) so:
m(P)=m(CBP)=7x-14°=7.21°-14°=147°-14°=133°
Answer: 133°
Hi this is for texaschic101 mainly but anyone else is fine too.
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I’ve just done this question based on what texaschic101 told me on the other question, can anyone check if I’ve done it right? Thanks
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Question is find the values of x and y in the diagram.
Answers
[tex](2x + 25) + y = 180[/tex]
We can also prove that [tex]3x = 2x + 25[/tex], which, when solved, shows that [tex]x = 25[/tex].
When plugged in to the original equation, we find that y = 105 degrees.
k over 2 -10 = 25 solve for k
Answers
Add 10 to both sides
k/2=35
Multiply both sides by 2
k=70
Final answer: k=70
good luck on your assignment and enjoy your day!
~[tex]MeIsKaitlyn:)[/tex]
Mary has five-eighths of the total of pencils her and her sister own. Together, they have 96 pencils. How many pencils does Mary have?
Answers
In the diagram, SR = and QR = . What is the perimeter of parallelogram PQRS?
A. √10 units
B. 8√2 + 2√10 units
C. 16√2 units
D. 8√2 + 8 units
Answers
Answer:
B. [tex]8\sqrt2+2\sqrt{10}[/tex] units
Step-by-step explanation:
We are given that a parallelogram PQRS in which point P(-2,5), Q(2,1),R(1,-2) and S(-3,2).
We have to find the perimeter of parallelogram PQRS.
Distance formula : [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Using the formula
[tex]SR=\sqrt{(1+3)^2+(-2-2)^2}=4\sqrt2[/tex]units
[tex]QR=\sqrt{(1-2)^2+(-2-1)^2}=\sqrt{10} units[/tex]
Now, the perimeter of parallelogram =2(SR+QR)
The perimeter of parallelogram =[tex]2(4\sqrt2+\sqrt{10})=8\sqrt2+2\sqrt{10} units[/tex]
Answer:B. [tex]8\sqrt2+2\sqrt{10}[/tex] units
What is the annual bonus for a salesperson who sells 55 cars?
A.150
B.825
C.1,500
D.8,250
Por favor necesito
ayuda(please i need help)
Answers
1,800/120 = 15
55 x 15 = 825
Answer:
$825 dollars
Step-by-step explanation:
is the answer i belive hope this helps
If EG=50,and point F is 2/5 of the way between E and G
Answers
The measure of the segment EF = 20 and the measure of the FG is 30.
What is a line segment?A line segment in geometry is a section of a line that has two clearly defined endpoints and contains every point on the line that lies within its confines.
Given that the segment EG is 50 and the ratio of EF to EG is 2 to 5. The length of the segment EF and FG will be calculated as,
EF / EG = 2 /5
EF = ( 2 x EG ) / 5
EF = ( 2 x 50 ) / 5
EF = 2 x 10
EF = 20
The length of the segment FG will be calculated as,
EF / FG = 2 / 3
FG = ( 3 x EF ) / 2
FG = ( 3 x 20 ) / 2
Fg = 3 x 10
FG = 30
To know more about line segments follow
brainly.com/question/2437195
#SPJ2
Please help! Giving Brainliest! 1.How many college students are majoring in elementary education?
A.30
B.70
C.300
D.There is not enough information to tell.
2.Which major has the fewest number of students? (1 point)
A.Business
B.Computer programming
C.Elementary education
D.Engineering
E.Medical
Answers
2. E. There are only 7% of the students who major in a medical area. So say out of 100 students, 7% of that would be 7 people, and 19% would be 19 people, and so on. So therefore, the least people are majoring in a medical field.
(01.05) given the point (4, 5) and the slope of 6, find y when x = 24. (1 point) 118 144 125 149
Answers
4 + (27 - 12 ∙ 2) ÷ 2.
Answers
= 4 + (27 - 24) ÷ 2
= 4 + (3) ÷ 2
= 4 + 1.5
= 5.5
Mixed number form- 5 1/2
Exact form- 11/2
A line has a rise of 6 and a slope of 1/20. Find the run of the line. Type a numerical answer in the space provided. If necessary, use the / key to represent a fraction bar.
Answers
6 is the y intercept
.05 or 1/20 is the slope
Answer:
120 is the run of the line
Step-by-step explanation:
Hello, i think I can help you with this
By definition , the slope of a line is given by:
slope(m)=Δy/Δx
where m is the slope, Δy is the rise, and Δx is the run
Step 1
isolate the run (Δx)
m=Δy/Δx
m=Δy/Δx
m*Δx=Δy
Δx=Δy/m
step 2
pute the values into the formula
Let
Δy=6
m=1/20
Δx=Δy/m
Δx=6÷(1/20)
Δx=120
the run of the line is 120
Do not hesitate to ask me any questions,Have a fantastic day.
How to find the angle of a non right triangle with its sides?
Answers
When asked his age, the algebra teacher said, “if you square my age, then subtract 23 times my age, the result is 50.” how old is he?
Answers
Given,
[tex] x^{2} - 23x = 50[/tex]
[tex] x^{2} - 23x - 50 = 0[/tex]
[tex] x^{2} - 25x + 2x - 50 = 0[/tex]
[tex] x(x -25)+2(x-25)=0[/tex]
[tex](x+2)(x-25)=0[/tex]
Hence, x = -2 or 25.
Since, the age of the teacher cannot be in negative, the age of the teacher is 25 years.
Please help fast and answer all questions thank you.
Answers
2) i think is b. linear pair
3) d.vertical angles
What is the difference between associative and distributive property?
Answers
Is the following relation a function?
Circle centered at the origin with radius 1
Yes
No
Answers
No, if you do the vertical line test( draw a vertical line on each graph line that hits the circle) if the lline touches more than one point AT ANY TIME it is not a function. So in this case it is not a function
Answer:
Nooooooooooooo
What is a counterexample for the conjecture?
Conjecture: The product of two positive numbers is greater than the sum of the two numbers.
Answers
2 + 1 = 3
here the product is less than the sum so the conjecture is not true for these 2 numbers so its not true for all positive numbers.
Which is the area of a circle with circumference of 15.7 units?( Use 3.14 for )
Answers
C = πd --- d is diameter
First, the circumference must be found. If the circumference is 15.7, plug it in.
15.7 = πd
We know what pi is.
15.7 = 3.14 (d)
Now, simply divide 3.14 by 15.7 to find the diameter (d). You get 5. Since the radius is half of the diameter, the radius is 2.5. Plug this into the area formula, and plug pi in, too.
A = 3.14(2.5²)
2.5 to the second power is 6.25.
A = 3.14(6.25)
Tada! Multiply, and you're left with 19.625!
from this radius r= 15.7/ 2π
r= 15.7/(2x 3.14)
r= 15.7/ 6.28 = 2.5
therefore area = π r^2= π x r x r
= 3.14 x 2.5 X 2.5 = 19.625 sq units
You earned 34,000 and your total tax due was 6,200 what was your average tax rate
Answers
So basically, this reads as 18% tax rate.
That be some expensive right there!
The length of a rectangle is 3 more than 4timesthe width . If the length of the rectangle is 27 feet what is the width
Answers
Length= 3+ 4*width
27ft= 3ft+ 4*width
4*width= 27ft-3ft= 24ft
width= 6ft
How many subsets of three elements each exist in a set of six elements?
Answers
6C3 = (6*5*4)/(1*2*3) = 20
Darrel is currently 20 feet below sea level. which correctly describes the opposite of darrel's elevation?
Answers
Answer:
Darrel is 20 ft above sea level.
Step-by-step explanation:
We have been given that Darrel is currently 20 feet below sea level.
This means that Darrel's elevation would be [tex]-20[/tex] ft.
The opposite of Darrel's elevation would be negative of [tex]-20[/tex] ft.
[tex]-(-20)=20[/tex]
Since opposite of Darrel's current elevation is positive 20 ft, therefore, Darrel is 20 ft above sea level.
A supplement of a given angle is 4 times as large as the complement of the angle. what is the measure of the angle?
Answers
(180-x)= 4(90-x)
Distribute on the right
180-x=360-4x
Add 4x to both sides
180+3x=360
Subtract 180 from both sides
3x=180
Divide both sides by 3
x=60
Final answer: 60 degrees
A rectangular auditorium seats 1564 people. the number of seats in each row exceeds the number of rows by 1212. find the number of seats in each row.
Answers
Help,, what is y??????????????????