Answer:
D) 3 1/3 hours
Step-by-step explanation:
10÷3=3.3=3 1/3
Solve for b in the equation: 2b + 3c = A
Answer:
b = (A - 3C)/2
Step-by-step explanation:
2b = A - 3C
b = (A - 3C)/2
Determine the slope and the y-intercept of the following equation.
2x + 7y = 8
Answer:
the slope = -2/7
the y-intercept = 8/7
Step-by-step explanation:
Rewrite the equation to a slope-intercept form:
7y = 8 - 2x
7y = -2x + 8
[tex]y=-\frac{2}{7}x+\frac{8}{7}[/tex]
so the slope = -2/7
the y-intercept = 8/7
Help me please I beg
A plane traveled 2565 miles with the wind in 4.5 hours and 2205 miles against the wind in the same amount of time. Find the speed of the plane in still air and the speed of the wind.
Answer:
plane: 530 mi/hwind: 40 mi/hStep-by-step explanation:
Let p and w represent the speeds of the plane and the wind. The relation between time, speed, and distance is ...
speed = distance/time
p +w = (2565 mi)/(4.5 h) = 570 mi/h
p -w = (2205 mi)/(4.5 h) = 490 mi/h
Adding these speeds, we get ...
(p +w) +(p -w) = (570) +(490) mi/h
2p = 1060 mi/h
p = 530 mi/h
Then the speed of the wind is ...
w = 570 mi/h -p = (570 -530) mi/h = 40 mi/h
The plane's speed is 530 mi/h; the wind speed is 40 mi/h.
Find a description this equation represents. Of the numbers 1, 2, 3, 4, and 5, which are solutions to the equation? 3x-10=2
Answer:
3x - 10 = 2
3x = 2 + 10
3x = 12
÷3 = ÷3
x = 4
Answer:
The answer is 4
Step-by-step explanation:
3*4=12
12-10=2
Stringed instruments like guitars and pianos create a note when a string vibrates back and forth. The distance that the middle of the string moves from the center is called the amplitude (a), and for a guitar, it starts at 0.75 mm when a note is first struck. Amplitude decays at a rate that depends on the individual instrument and the note, but a decay rate of about 25% per second is typical. Calculate the time it takes for an amplitude of 0.75 mm to reach 0.1 mm.
The amplitude will reach 0.1 mm in about 7 seconds.
The amplitude will reach 0.1 mm in about 7 seconds.
The amplitude will reach 0.1 mm in about 15 seconds.
The amplitude will reach 0.1 mm in about 15 seconds.
The amplitude will reach 0.1 mm in about 1.5 seconds.
The amplitude will reach 0.1 mm in about 1.5 seconds.
The amplitude will reach 0.1 mm in about 3 seconds.
The the product of the initial amplitude and the exponential decay rate
of raised to the power of the time taken give the amplitude of 0.1 mm.
Correct option:
The amplitude will reach 0.1 mm in about 7 secondsWhat is the exponential decay rate and how is it used?The given parameters are;
The initial amplitude = 0.75 mm
The decay rate, i = 25%
Required:
The time it takes the guitar to decay to 0.1 mm.
Solution:
The series of the sizes of the amplitude that has constant decay uses an
exponential decay formula.
When the amplitude is 0.1 mm, we have;
y = a·rⁿ
Where;
r = 1 - i
a = 0.75
n = The time taken
Which gives;
r = 1 - 0.25 = 0.75
y = 0.1 = 0.75 × 0.75ⁿ
[tex]\dfrac{0.1}{0.75} = \mathbf{0.75^{n}}[/tex]
[tex]n = \dfrac{ln\left( \dfrac{0.1}{0.75} \right)}{ln(0.75)} \approx \mathbf{7.0}[/tex]n = 7.0
The time it takes the amplitude to reach 0.1 mm is 7 seconds.Learn more about exponential growth and decay formula here:
https://brainly.com/question/2193820
Nancy mistakenly measured the temperature of a heated liquid to be 48°C. The actual
temperature of the headed liquid was 50°C. What was the percent error?
Answer:
4.17% (nearest hundredth)
Step-by-step explanation:
percent change = [ (difference between initial value and final value) ÷ initial value] x 100
⇒ percent change = [ (50 - 48) ÷ 48 ] x 100 = 4.17% (nearest hundredth)
please help i dont understand these and i need help
you have to find missing numbers with geometric mean
Answer:
it is 200
Step-by-step explanation:
2 take 2 add 20 add a sec 0
Ani and her friends recorded their bowling shoe sizes. Which two bowling shoe sizes occurred most often? How many of Ani's bowling friends have size 6 1/2 shoes?
Answer:
5 and 5 1/2 appear the most option. None of Ani's friends have 6 1/2 shoes.
Step-by-step explanation:
5 and 5 1/2 have the most dots, which means the most friends have those shoes. There are no dots above 6 1/2, meaning no friends have that shoe size.
The solution is, 5 and 5 1/2 appear the most option. None of Ani's friends have 6 1/2 shoes.
What is data?Data is a collection of discrete values that convey information, describing quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted. A datum is an individual value in a collection of data .
here, we have,
from the given data, we get,
the given information, gives,
5 and 5 1/2 have the most dots, which means the most friends have those shoes.
There are no dots above 6 1/2, meaning no friends have that shoe size.
Hence, 5 and 5 1/2 appear the most option. None of Ani's friends have 6 1/2 shoes.
To learn more on data click:
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What’s the length of this missing leg?
Answer:
b = 4.5 mm
Step-by-step explanation:
using Pythagoras theorem:
a² + b² = c²
4² + b² = 6²
b² = 6² - 4²
b² = 36 - 16
b² = 20
b = √20
b = 4.5
Pythagoras theorem:
a² + b² = c²
4² + b² = 6²
b² = 6² - 4²
b² = 36 - 16
b² = 20
b = [tex] \sqrt{20}[/tex]
b = 4.5
which of the following is a true statement?
Answer:
3/8 less than 1/2 is correct
Step-by-step explanation:
can I have help pls
James is trying to save money for college. When
he is 5 years old, his uncle puts $750 into a
savings account for him. The money should
increase by 5% each year until he needs it for
college.
Write an exponential model for this situation.
Answer:
[tex]y=(750)1.05^t[/tex], where [tex]t[/tex] is the time (in years) from investment
Or [tex]y=(750)1.05^{t-5}[/tex], where [tex]t[/tex] is the age of James
Step-by-step explanation:
exponential model: [tex]y=ab^t[/tex], where [tex]t[/tex] is the time (in years) from investment
when t = 0, y = 750
[tex]\implies 750=ab^0[/tex]
As [tex]b^0=1[/tex]
[tex]\implies 750=a[/tex]
Therefore, [tex]y=750b^t[/tex]
If the savings increase by 5% each year, then b = 105%.
105% = 105/100 = 1.05
Therefore, b = 1.05
So final model: [tex]y=(750)1.05^t[/tex], where [tex]t[/tex] is the time (in years) from investment
Or, we can write this as [tex]y=(750)1.05^{t-5}[/tex], where [tex]t[/tex] is the age of James
If 9x + 12 = 48 what is x-10?
Answer:
x - 10 = -6
Step-by-step explanation:
9x + 12 = 48
Subtract 12 from both sides.
9x + 12 = 48
- 12 - 12
+ 12 and - 12 cancel out. 48 - 12 is 36.
9x = 36
Divide 9 from both sides.
9x = 36
÷ 9 ÷ 9
9 ÷ 9 cancels out. x is left. 36 ÷ 9 is 4.
x = 4
Knowing x = 4, solve the equation.
x - 10 = ?
Plug in 4.
4 - 10 = -6
4 - 10 equals -6. This is your answer.
Hope this helped!
Answer:
i)
9x + 12 = 48
or,9x=48-12
or,9x=36
or,x=36/9
or,x=4
Thus,the value of x is 4.
ii)
x-10
=4-10(Putting x as 4)
=-6
[tex]\sqrt[3]{8.01}[/tex] Approximate
A line passes through the points (3,5) and (4,9), What is its equation in slope-intercept
form?
Write your answer using integers, proper fractions, and improper fractions in simplest form
Answer:
y = 4x-7
Step-by-step explanation:
slope = difference of y-values / difference of x-values
= (9-5) / (4-3)
= 4/1
select a point to use in the slope-intercept form of a line: y = mx + b where 'm' is the slope and 'b' is the y-intercept
(3,5)
5 = 4(3) + b
5 = 12 + b
-7 = b
slope is 4 and y-intercept is -7
y = 4x-7
Some people attended a small concert last Saturday. 70 of those people sat in the balcony
of the theater. This was 35% of the people who attended. How many people were at the
concert?
Answer:
200
Step-by-step explanation:
If 'a' is the total attendance, the given relation is ...
70 = 0.35a . . . . . . 70 is 35% of attendance
Dividing by the coefficient of 'a', we find the attendance was ...
70/0.35 = a = 200
200 people were at the concert.
Jake eat 4 grapes he had less than 25 grapes to start with after eating 4 grapes how many grapes does James have left
one step inequality word problems
Answer:
x < 21
Step-by-step explanation:
Let x = the number of grapes James has left
x + 4 < 25
x < 21
Review the attachments. Review the process of solving an equation and fill in the blanks.
Answer:
1) Combine like terms
2) [tex]\sqrt[3]{x} =3[/tex]
3) cube both sides of the equation
4) [tex]4\sqrt[3]{27} +8\sqrt[3]{27}=36[/tex]
5) 4(3) + 8(3) = 36
Step-by-step explanation:
1) Combine like terms
2) [tex]\sqrt[3]{x} =3[/tex]
3) cube both sides of the equation
4) [tex]4\sqrt[3]{27} +8\sqrt[3]{27}=36[/tex]
5) 4(3) + 8(3) = 36
when the sample size n is large, the standard deviation of x-bar is approximately the same as the standard deviation from which the sample is taken. True or False?
Answer:
False
Step-by-step explanation:
By the Central Limit Theorem, as the sample size [tex]n[/tex] gets larger, the smaller the standard deviation [tex]\sigma[/tex] of the sampling distribution gets.
What would be the area of a triangle with a base of 5 cm and a height of 8 cm?
Answer:
20
Step-by-step explanation:
the area of a triangle is 1/2 base times hight (a=1/2bh)
Answer:
20 cm squared
Step-by-step explanation:
The formula is Area equals (base times height) divided by 2, so (5*8)/2=20
At a university 6 out of every 13 student live on campus if there are 156 students enroll how many lives on campus
Answer:
72
Step-by-step explanation:
156 ÷ 13 × 6 = 72
Hope this helps!
Good luck!
Answer:
156÷13=12(the number of 13s'in 156)
there are 12
12*6=72
seventy two students live on campus
IL GIVE BRAINELST
Indigenous peoples ate only the meat from buffaloes and threw the carcass away.
True False
Answer:
false
Step-by-step explanation:
Answer:
False is the one you would choose.
Step-by-step explanation:
Mariah fills 7 pillows with feathers. Each pillow weighs 3/4 pounds. What is the total weight of the 7 pillows?
Identify the correct solution to the problem 5 x 3/4
Answer:
3.75
Step-by-step explanation:
5 × 3/4
= 15/4
= 3.75
Hope it helps ⚜
ayudaaaa y le regalo coronitaaaaaaaaaaaaa porfa
Step-by-step explanation:
4. 0.9
5. 0.4
6. 0.21
hope this helps you.
Step-by-step explanation:
This is the way to do this I hope it will help you!!
word phrase that can be represented by m + 25.
Answer:
A number added by 25
In a problem it is: Ben has m dollars, his Mom gave him 25 dollars how much does Ben have now?
Hope this helps!
Question 3 of 10
Find the sum: (x2 + 2x + 3) + (3x2 + x + 1)
+
i need help
Answer:
Combine like terms
x^2 + 2x + 3 + 3x^2 + x + 1
4x^2 + 3x + 4
screenshot, don't really need aanswer, just to test if any of you guys can do it
Answer:
it's a hard one
Step-by-step explanation:
I don't know either
how personality can affect communication?
Answer:
Personality impacts how we prefer to communicate with people, as well as how we ourselves respond to information. The more we understand our own communication styles and those of the people we work with, the more effective we can be as leaders, teams, and colleagues
Step-by-step explanation: