Answer:
What statements are you talking about
Step-by-step explanation:
The sum of 2 numbers is 25. The sum of their reciprocals os 1/4. Determine the two numbers.
Answer:
5, and 20
Step-by-step explanation:
5+20=25
reciprocal of 5 is 1/5 and reciprocal of 20 is 1/20 so 1/5=4/20 and 4/20 + 1/20 = 5/20. 5/20 = 1/4
What are the answers to 5,6,and 7
Suppose that 20% of the subscribers of a cable television company watch the shopping channel at least once a week. The cable company is trying to decide whether to replace this channel with a new local station. A survey of 100 subscribers will be undertaken. The cable company has decided to keep the shopping channel if the sample proportion is greater than 0.27. What is the approximate probability that the cable company will keep the shopping channel, even though the true proportion who watch it is only 0.20
Answer:
There is approximately 4% chance that the cable company will keep the shopping channel, even though the true proportion who watch it is only 0.20.
Step-by-step explanation:
The random variable X can be defined as the number of subscribers of a cable television company who watch the shopping channel at least once a week.
X follows a Binomial distribution with parameters n = 100 and p = 0.20.
But the sample selected is too large and the probability of success is close to 0.50.
So a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:
1. np ≥ 10
2. n(1 - p) ≥ 10
Check the conditions as follows:
[tex]np=100\times 0.20=20>10\\\\n(1-p)=100\times 0.80=80>10[/tex]
Thus, a Normal approximation to binomial can be applied.
[tex]\hat p\sim N(p,\frac{p(1-p)}{n})[/tex]
Compute the approximate probability that the cable company will keep the shopping channel, even though the true proportion who watch it is only 0.20 as follows:
[tex]P(\hat p>0.27)=P(\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}>\frac{0.27-0.20}{\sqrt{\frac{0.20(1-0.20}{100}}})[/tex]
[tex]=P(Z>1.75)\\=1-P(Z<1.75)\\=1-0.95994\\=0.04006\\\approx 0.04[/tex]
Thus, there is approximately 4% chance that the cable company will keep the shopping channel, even though the true proportion who watch it is only 0.20.
The circumference of a circular region is shown. What type of number best describes the diameter of the
circle. Complete the explanation.
л mi
"
numbers best describes the situation.
TI
The diameter is = = 1 mile, so the set of integer
TI
real
irrational
integer
whole
How much time will Alex need to walk to his school, which is 2 1 4 miles away from his house, if he would walk with the speed of 3 mph
Step-by-step explanation:
[tex]9.16 = 585288 { \sqrt[5 < 63 = 33 \times \\ ]{?} }^{?} [/tex]
Answer: Its 0.75 hours :)
what is the third power of 3
Answer:
27
Step-by-step explanation:
She decides to change the length of the top of the trapezoid-shaped garden from 32 ft to 24 ft. Which expression finds the change in the scale factor?
StartFraction 4 inches over 24 feet EndFraction
StartFraction 32 feet over 4 inches EndFraction
StartFraction 24 feet over 32 feet EndFraction
StartFraction 32 feet over 24 feet EndFraction
Answer:well i think it’s c
Step-by-step explanation:
I took the test
Answer:
c .
Step-by-step explanation:
9) It takes 7 minutes for Isabella to walk
around the gym track twice. At this
rate, how many times can she walk
around the track in a half hour?
Answer:
8 4/7
Step-by-step explanation:
Use a proportion.
Let the unknown number of laps for 30 minutes be x.
7 minutes is to 2 laps as 30 minutes is to x laps
7/2 = 30/x
Cross multiply.
7x = 2 * 30
7x = 60
x = 60/7
x = 8 4/7
Answer: 8 4/7
Isabella walks twice around the gym track in 7 minutes. She can do 60/7 laps of the track in a half hour if she continues moving at this pace.
What is the meaning of the term “laps”?
Running a lap is equivalent to making a full circle of a track during a race or while exercising while walking. the front portion of the human body, when seated, from the waist to the knees. the area of clothing that, while a person is sitting, covers the front of their body from the waist to their knees. a location, setting, or circumstance that promotes rest or nurturing: the lap of luxury.
Laps are being done to get a good workout. For beginners, 20–30 laps in 30 minutes is frequently an effective and reachable target. If you're more advanced, try to do 40 to 50 laps in the same amount of time, and aim for 60 or more.
Let x equal the undetermined number of laps for 30 minutes.
7 minutes equals 2 laps, while 30 minutes equals x laps.
[tex]\frac{7}{2} = \frac{30}{x}[/tex]
Cross multiply.
[tex]7x = 2 \times 30\\7x = 60\\x = \frac{60}{7}\\[/tex]
Therefore, Isabella can do 60/7 laps of the track in a half hour if she continues moving at this pace.
Learn more about laps from here:
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An AutoCAD drawing has a scale of inches to 3 ft. If a piece of a bridge measures 17 feet, how long is that piece in the AutoCAD printout?
Answer:
D
Step-by-step explanation:
Answer:
2.83 inches
Step-by-step explanation:
Let y equal the length of the drawing in inches. Use a proportion to solve for the missing length.
The length of a new rectangular playing field 4 yards longer than double the width. If the perimeter of the rectangular playing field is 344 yards, what are it’s dimensions?
Answer:
Hi There!
Your answer is:
Length = 116
Width = 56
Step-by-step explanation:
L= 4+ 2w
Width=w
perimeter formula
l+l+w+w= perimeter
Subsitute L for 4+2w
(4+2w)+(4+2w) + (w) + (w) = 344
8 +4w+w+w = 344
8+ 6w = 344
-8
6w = 336
/6
w= 56
PLUG BACK IN!
Length = 4+ 2w
Length = 4+ 2(56)
Length = 116
Width = 56
CHECK YOUR WORK
116+116+56+56= 344???
344 = 344 YES
HOPE THIS HELPS
please answer my question
Answer:
hope that will help youJohn Paul gave the cashier $60 to pay for 8 bags of potatoes. The cashier gave him $24.32 in change. What is the cost in dollars and cents for each bag of potatoes?
Answer:
$4.46
Step-by-step explanation:
$60- 24.32= $35.68
So $35.68=8 bags of potatoes.
Then ÷8 to find 1 bag.
$35.68 ÷8 = $4.46
$4.46=1 BAG
You are rock climbing and descending a cliff at a rate of 9 feet per minute. The cliff is about 360 feet high. How long until you are at a height of 234 feet?
How long until you are halfway down the cliff?
Teddy wrote a four-digit number that is less than 5000 on the board. He used the digits 6, 3, 4, and 7. In his number 3 is next to 7, 6 is not next to 4, and 4 is not next to 3. What is Teddy’s number?
Answer:
6374
Step-by-step explanation:
Answer:
6374
Step-by-step explanation:
six not next to four.
three next to seven.
seven next to three.
four not next to three.
(I listed the numbers until one of them matched)
Henry's Jewelry Store receives a shipment of 500 jewelry pieces.At this rate.If Henry's Jewelry Store places an order for 5,500 jewelry pieces,how many should they expect to be damaged. They should expect blank pieces of jewelry to be damaged.
Answer:
11
Step-by-step explanation:
To participate in a baseball league, the required equipment for each player is a glove, a hat, and a pair of cleats. A glove costs $53.95 , a hat costs $17.95 , and a pair of cleats costs $29.95 . What is the total cost for a team of 12 players?
Answer:
1222.2
explanation:
53.95 x 12 = 647.40
17.95 x 12 = 215.40
29.95 x 12 = 359.40
647.40 + 359.40 + 215.40 = 1222.2
The total cost for a team of 12 players as per given cost of different equipment's is equal to $1222.20.
To calculate the total cost for a team of 12 players,
Add up the costs of the required equipment for each player.
The equipment includes a glove, a hat, and a pair of cleats.
Cost of one glove = $53.95
Cost of one hat = $17.95
Cost of one pair of cleats = $29.95
Now, we need to calculate the total cost for each player by adding the costs of all three items:
Total cost per player = Cost of glove + Cost of hat + Cost of cleats
Total cost per player = $53.95 + $17.95 + $29.95
Total cost per player = $101.85
Finally, to find the total cost for a team of 12 players, multiply the total cost per player by the number of players:
Total cost for the team of 12 players = Total cost per player × Number of players
Total cost for the team of 12 players = $101.85 × 12
Total cost for the team of 12 players = $1222.20
Therefore, the total cost for a team of 12 players is $1222.20.
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The table below shows a proportional relationship between s and t . Which equation represents the relationship between s and t?
Answer:
[tex] s = 7t [/tex]
Step-by-step explanation:
The table given shows that both variables are directly proportional to each other. That is, as s variable increases, y variable also increases.
Equation to represent this direct proportion would be:
[tex] s = kt [/tex],
where, k = constant of proportionality.
Let's find k from the table given.
Let's use any pair values of of s and t given in the table. Say, s = 21, t = 3
[tex] s = kt [/tex]
[tex] 21 = k3 [/tex]
Divide both sides by 3
[tex] \frac{21}{3} = \frac{k3}{3} [/tex]
[tex] 7 = k [/tex]
[tex] k = 7 [/tex]
Plug in k = 3 into [tex] s = kt [/tex]:
[tex] s = 7t [/tex]
Answer:
B
Step-by-step explanation:
Divide 7
Find the exact value of Cosine (alpha minus beta) given sine (alpha) = negative four-fifths= and cos (beta) minus StartFraction 5 Over 8 EndFraction = for α in Quadrant III and ß in Quadrant II.
Answer:
Actual answer is [tex]\frac{15-4\sqrt{39} }{40}[/tex]
Step-by-step explanation:
What is the equation of the line that passes through the point (3,2) and has a slope of -2?
Answer:y=-2x+8
You have to plug it into the equation y-k=m(x-h) where k is the 2 of (3,2) and m is the slope and h is the 3 of (3,2)
A cell phone plan costs $30 per month for unlimited calling plus $10 per GB of data used. If Alejandro can only afford for his cell phone bill to be $60 a month, how many GB’s can he use in a month, maximum? Your answer will be a whole number. *
1 point
Answer:
3 GB
Step-by-step explanation:
If the cell phone plan cost $30 per month
then subtracting this amount from $60 we have
$60 - $30 = $30
it 1 GB costs $10
therefore dividing this amount with $30
we have
$30/$10 = 3
Alejandro can only afford 3GB per month.
please help me ASAP :)
c.) 1/2³ i got it right on assignment
create an equation from the model that describes the relationship between the weights on each side of the scale into the correct answer in the Box
Answer:
2y+3=4y+2
Step-by-step explanation:
Answer:
2y+3=4y+2
Step-by-step explanation:
cause i got it right
5. Solve the system of equations.
x + y = 6
2x - y = 9
What is the slope of a line perpendicular to the line y= -4x + 16
Answer:
1/4
Step-by-step explanation:
The opposite inverse of a slope is the perpendicular slope.
y = -4x + 16
-4 is the regular slope, the opposite inverse is 1/4
[tex]y = \frac{1}{4} x + 16[/tex]
What is the value of -3² +(-4+7)(2)
A. -28
B. -3
C. 3
D. 15
The answer is B.
Have a good day :)
Write an equation for the line graphed.
A) y = 2
B) y = 2x
C) y = -2x
D) y = 2x + 1
Answer:
the answer is "d" because the x region is negative 2 and the y region is a positive1
Rachel earned $34 in 4 hours at her job today. She wants to know how much she could earn, e, tomorrow if she works 10 hours at the same hourly rate.
How much will Rachel earn in 10 hours?
Answer:
$85
Step-by-step explanation:
Rachel will earn $85 because her hourly wage is $8.5.
Hope this helps! c:
Answer:
She would earn 85$
Step-by-step explanation:
If you divied 34 by 4 you get 8.5 then you times that by 10 you get 85.
what is the product of 0.086 x 10 power 2
Answer:
The product is 8.6
Step-by-step explanation:
you move two decimal places to your right
Find the measure of each numbered angle. NEED HELP NOW
m<1=
m<2=
m<3=
Answer:
m∠1 = 58°
m∠2 = 58°
m∠3 = 72°
Step-by-step explanation:
The sum of the interior angles of a triangle is equal to 180°. The vertical angles at Point Z are congruent and therefore their measures are equal.
Retailers will buy 45 Wi-Fi routers from a wholesaler if the price is $10 each but only 20 if the price is $85. The wholesaler will supply 56 routers at $46 each and 70 at $50 each. Assuming that the supply and demand functions are linear, find the market equilibrium point.
