Answer: -71.104 ft/sec
Step-by-step explanation:So you need to know how fast the balloon is moving when it hits this person's head. velocity is based on time. So you need the time that it hits this person's head. You can get time from the position equation. Because the balloon hits this person's head 6 feet from the ground, you know that the final position is at 6 so you plug that into the position equation and solve for t. You look and see what the appropriate t value is and plug it into the velocity equation and see what the answer is.
6=-16t^2+40t+60
0=-16t^2+40t+54
plug in those values into the quadratic formula or your calculator and you get:
t = -.972
or
t = 3.472
since you can't have negative time, the other answer must be it.
So you then plug it in and solve.
v(3.472) = -32(3.472) + 40
which is approximately -71.104 ft/sec
or if they just want speed, 71.104 ft/sec. (remember, speed is velocity without direction)
Simplify the following fraction: 6/9
Tutoring ABC charges $50 sign up fee plus $12 an hour . HW helps charge a $38 sign up fee plus $15 an hour . After how many hours will the total for each company be the same
Answer:
Step-by-step explanation:
Tutoring ABC - $50 sign up and $12 an hour
HW helps- $38 sign up and $15 an hour
50 38
+12 +15
62 53
+12 +15
74 68 Four months
+12 + 15
86 83
+12 +15
98 98
how many different ways can you find for 7 coins totaling 95 cents?
Answer:
one way
Step-by-step explanation:
2 quarters
4 dimes
1 nickel
Is 1/2 is equal to 1/10+1/10+1/10+1/10+1/10?
Answer:
Yes
Step-by-step explanation:
What is the inverse operation needed to isolate the variable 4 = p - 8
Answer:
To do this you need to add both sides by 8. yw
Step-by-step explanation:
[tex]1 \div 7[/tex]
Answer:
1/7 or 0.14
Step-by-step explanation:
Answer:
0.14
Step-by-step explanation:
All I did was plug it into my calculator. If you don't have one, you can use your phone or computer. Both devices have calculators programmed in. This answer is not the exact answer; it is just the first two decimals.
Please let me know if you need more help. Hope this helps!
In a major city is 7% find the total cost including the tax change on a purchase of $400 the total cost including sales tax is how much money
Answer:
$428, with the sales tax being $28.
Step-by-step explanation:
400 x 7/100 = 28
400+28=428
7/3 =q+2/3 what is q?
Answer: q=5/3
Step-by-step explanation:
Let's take our equation
7/3=q+2/3
-2/3 -2/3
5/3=q
q=5/3
Answer: q = 5/3
Step-by-step explanation: Step 1: Flip the equation.
q + 2/3 = 7/3
Step 2: Subtract 2/3 from both sides.
q + 2/3 - 2/3 = 7/3 - 2/3
6) The Delphi method used for forecasting: A) uses a single measure that weights multiple indicators and provides a measure of overall expectation. B) obtains forecasts through a comparative analysis with a previous situation. C) uses a panel of experts, whose identities are typically kept confidential from one another, to respond to a sequence of questionnaires. D) uses measures that are believed to influence the behavior of a variable that the researcher wishes to forecast.
Answer:
C) uses a panel of experts, whose identities are typically kept confidential from one another, to respond to a sequence of questionnaires.
Step-by-step explanation:
In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.
There are various types of sampling used by researchers and these are;
1. Random sampling.
2. Systematic sampling.
3. Stratified sampling.
4. Cluster sampling.
5. Opportunity or convenience sampling.
The Delphi method is a structured communication framework or technique that is typically used as an interactive forecasting method to arrive at a group decision or opinion by relying on the feedback from a panel of experts. The individual opinions of the panel of experts are modified to ensure anonymity and are mainly an unbiased exchange of ideas, so as to produce a convergence of opinions.
Hence, the Delphi method used for forecasting uses a panel of experts, whose identities are typically kept confidential from one another, to respond to a sequence of questionnaires.
The length of a rectangle is 2 units more than the width. The area of the rectangle is
35 units. What is the width, in units, of the rectangle?
Find all solutions to the equations:
y^2=14y-24
x^4-81=0
Answer:
y2=14y-24
y2-14y+24=0
y2-2y-12y+24=0
yx(y-2)-12(y-2)=0
(y-2)x(y-12)=0
y-2=0
y-12=0
y=2
y=12
y1=2,y2=12
x4-81=0
x4=81
x=+3
x=-3
x=3
x1=-3.x=3
Hello!
Please only answer if you know the answer, the comment section is right below. Please don't waste my points!
Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.
The image is down below. Show work! Thanks!
Answer:
7.71 km²Step-by-step explanation:
Area of triangle:
A = 1/2bhWe have the value of b but not h.
Added auxiliary segments which help to find the value of h.
See attached for details
sin 40° = h/4h = 4 sin 40°h = 2.57 kmThe area is:
A = 1/2*6*2.57 = 7.71 km²A small liberal arts college in the Northeast has 350freshmen. One hundred five of the freshmen are female. Suppose sixty freshmen are randomly selected (without replacement).Step 2 of 2:Find the standard deviation of the number of females in the sample. Round your answer to two decimal places, if necessary.
Answer:
The standard deviation of the number of females in the sample is 3.21.
Step-by-step explanation:
For each freshmen, there are only two possible outcomes. Either it is a female, or it is not. Sixty freshmen are randomly selected (without replacement). This means that the hypergeometric distribution is used to solve this question.
Standard deviation of the hypergeometric distribution:
We have that:
N is the population size.
n is the sample size.
s is the number of successes in the sample.
The standard deviation is given by:
[tex]\sigma = \sqrt{n(\frac{s}{N})(1 - \frac{s}{N})(\frac{N - n}{N-1})}[/tex]
A small liberal arts college in the Northeast has 350freshmen.
This means that [tex]N = 350[/tex]
One hundred five of the freshmen are female.
This means that [tex]s = 105[/tex]
Suppose sixty freshmen are randomly selected
This means that [tex]n = 60[/tex]
Find the standard deviation of the number of females in the sample.
[tex]\sigma = \sqrt{60(\frac{105}{350})(1 - \frac{105}{350})(\frac{350 - 60}{350 -1})} = 3.21[/tex]
The standard deviation of the number of females in the sample is 3.21.
A group of friends really love to go bowling together. Here are a set of final scores from a recent bowling trip: 147, 160, 80, 110, 121, 164, 62, 90, 76, 83, 110 What is the median
Answer:
110
Step-by-step explanation:
The first step is to rearrange the number from smallest to the biggest
62, 76, 80, 83, 90, 110, 110, 121, 147, 160, 164
Median is described as the middle number
Hence the median is 110
if there are only 2 of a particular stamp remaining out of 5000 originally printed, what percent remains today?
Answer:
0.04%
Step-by-step explanation:
To find a percentage, we want to create a ratio of a portion by the total.
Our portion is 2.
Our total is 5000.
Let's create the ratio by dividing the numbers.
2/5000
Divide.
= 0.0004
Multiply this by 100 to find the percentage.
0.04%
This is your answer.
Check your answer by plugging it into a percentage equation.
0.04/100 of 5000 = 2
0.0004 • 50000 = 2
2 = 2
Your answer is correct.
Hope this helps!
I need help please ^^ with math:
Which temperature is warmest?
1. 0°F
2. -25°
3. -32°F
4. 14°F
witch number?
Answer:
14 degrees is th warmest
Jeremy users 18 inches of twine for each box he packs for shipping. how many yards of twine does he need to wrap 5 boxes?
Answer:
2.5 yards of twine
Step-by-step explanation:
1 box = 18 inches
5 boxes = 18 x 5 = 90 inches
90 inches = 2.5 yards
Which of the points labeled shows the solution to the system of equations? (A, B, C, D, or E)
Answer:
E
Step-by-step explanation:
When is comes to a system of equations, the point where the lines intercept is the answer.
How many pints are in 6.5 gallons?
Answer:
52 pints in 6.5 gallons.
Step-by-step explanation:
6.5 *8= 52
Answer:
52 pints
Step-by-step explanation:
6.5 * 8 = 52
(*8 because there are 8 pints in a gallon)
help me please thank you
Answer:
3/2 and 3/4 are both not multiples of 1/3.
Step-by-step explanation:
They have to have 3 as the denominator (or the number below the line) to be a multiple of 1/3. For example: 1/3, 2/3, 3/3.
Hope you understand that! :)
Answer:
Explanation Below :)
Step-by-step explanation:
3/2 & 3/4 are mistakes
When finding three multiples of a number that is a fraction, the denominator (bottom number) always stays the same. So, 3/2 & 3/4 are not multiples of 1/3.
Write 7/40 as a
percent. explain plz
Can someone please give me the answers to all three I will be marking u brilliant
Answer:
1. 18
2. 49.5
3. 48
Step-by-step explanation:
1. Since it is 3 dogs to 1 person we need to multiply 6 with 3, so we get 18 dogs!
2. Since 2 books equal 8.25, we just need to multiply 8.25 by 6, which we get 49.5 from!
Hope this helps and don't forget to follow!
Can someone pleaseee help me
Answer:b
Step-by-step explanation:
does this graph show a function? explain how you know.
what does it mean when someone looks through your peephole in ur house and says "im comin' for u. u better run while u have the chance"?
Answer:
it means you are my neighbor
Step-by-step explanation:
Answer:
It means your gonna get killed
Step-by-step explanation:
hey jayden
consider the infinite geometric series 2(p-5) + 2(p-5)² + 2(p-5)³
what is 2/3(9+x)=-5(4-x)
Answer:
x=78
Step-by-step explanation:
2/3(9+x)=-5(4-x)
6+2/3=-20+x
6=-20+1/3x
x=78
Answer:
x=6
Step-by-step explanation:
Distribute.
2/3 * 9 = 6
2/3 * x = 2/3x
Distribute other side.
-5*4 = -20
-5 * -x = 5x
Rewrite.
6 + 2/3x = -20 + 5x
Subtract 5x from both sides.
-13/3x + 6 = -20
Subtract 6 from both sides.
-13/3x = -26
Multiply -3/13 to both sides.
x=6
How do you find y = x + 8. x + y = 2 in substitoun form
Solve for x.
4x - 6 = 30
Answer:
x = 9
Step-by-step explanation:
Move all terms that don't contain x to the right side and solve.
The solution to the equation 4x - 6 = 30 is x = 9.
What is the solution to the equation?Given the equation in the question:
4x - 6 = 30
To solve the equation 4x - 6 = 30, first, isolate the term with the variable:
4x - 6 = 30
Add 6 to both sides of the equation to isolate the term with the variable:
4x - 6 + 6 = 30 + 6
Add -6 and 6
4x + 0 = 30 + 6
4x = 30 + 6
Add 30 and 6
4x = 36
Divide both sides of the equation by 4 to solve for x:
(4x)/4 = 36/4
x = 36/4
x = 9
Therefore, the value of x is 9.
Learn more about equations here: brainly.com/question/14686792
#SPJ6
Scott's company makes solid balls out of scrap metal for various industrial uses. For one project, he must make copper balls that
have a radius of 6 in. If copper costs $0.75 per in, how much will the copper cost to make one ball?
Use 3.14 for I, and do not round your answer.