Answer:
86
Step-by-step explanation:
kahn academy
Answer:
.86 is the Khan Academy Answer
Step-by-step explanation:
1.476 on a z-table makes a .93 z-score. Since 1 - .93 = .7, there is a .7 tail on each side of the distribution. .7 + .7 = .14 and 1 - .14 = .86. Therefore, Emer has a .86 confidence interval.
On a 24 hour digital clock displaying hours, minutes and seconds, how
many times in each 24-hour period do all six digits change
simultaneously?
Answer:
23 times. Last second of every hour.
On 24 hours, a digital clock displaying hours, minutes, and seconds all six digits change 23 times simultaneously.
Change of digits:The digits representing the seconds on the clock change for every second.
The minute digits change for each minute that is for every 60 seconds.
Similarly, the digits representing the hours on the clock change every 60 minutes.
This means that for all the six digits to change simultaneously, the last second must be such that it completes a minute, and the last minute should be such that it completes an hour.
This means that at the end of every hour, all the six digits change.
Which will happen 23 times for a 24 hours clock.
Learn more about digital clock:
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Solve for X and represent solution graphically 5x+2<x+7
Answer:
x< 5/4
Step-by-step explanation:
sin x =
cos x =
tan x =
Answer:
Step-by-step explanation:
Use SOH CAH TOA to recall how the trig functions fit on a triangle
SOH: Sin(Ф)= Opp / Hyp
CAH: Cos(Ф)= Adj / Hyp
TOA: Tan(Ф) = Opp / Adj
so Sin(x) = d/f
Cos(x) = e/f
Tan(x) = d/e
got it? :)
Answer: sin= d/f
cos= e/f
tan= d/e
Step-by-step explanation:
The time t required to do a job varies inversely as the number of people working. It takes 4 hr for 7 cooks to prepare the food for a wedding rehearsal dinner. How long will it take 8 cooks to prepare the dinner?
9514 1404 393
Answer:
3 1/2 hours
Step-by-step explanation:
If there are 8/7 times as many cooks, it will take 7/8 the amount of time. (That's what "inversely proportional" means.)
(7/8)(4 h) = 28/8 h = 3 1/2 h
It will take 8 cooks 3 1/2 hours to prepare the dinner.
Dr. Howser recently purchased two new fish tanks (Tank A and Tank B) to place in the waiting area of his office. Each fish tank holds exactly 120 gallons of water. Tank A will hold small fish and Tank B will hold large fish. Dr. Howser plans on buying 3 small fish for every 10 gallons of water in Tank A. He plans on buying 6 large fish for every 40 gallons of water in Tank B.
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
At Bike Shop X it costs $2.75 per hour plus a $3.00 deposit to rent a bike. At Bike Shop Z
it costs $1.75 per hour plus a $7 deposit to rent a bike. When would it cost less to rent a bike
from Bike Shop X? Explain.
Answer:
ok so you see that right away bike shop x is more cost than bike shop z so if you add 2.75 and 3 dollars it would cost 5.75 dollars of course the cost of 2.75 dollars is per hour so you would need to count 2.75 per hour and as you bike shop z the amount of cost per hour is 1.75 but the deposit fee is 7 dollars so the cost would be 8.75.
Step-by-step explanation:
Ok why it is lower cost because as you see each hour on shop x it is 2.75 and each hour in z shop it is 1.75 why z shop is lower because x shop have bigger cost per hour and that can add up more than z shop.
3 in = 25 miles how far is 7.5 in
Answer:
62.5
Step-by-step explanation:
Answer:
75
Step-by-step explanation:
Eva is saving money for a trip. She is able to save $75 a week. Her friend
from Iceland, Annie, is also saving money. Annie is able to save 9000 Kronas
(Icelandic money) each week. If $4 is equal to about 500 Kronas, who is
saving at a greater rate?
Which one of these represents the graph in this picture right here ? A,B,C,D,E or F?
PLEASE HELP
Answer:
A) y=3x+1
Step-by-step explanation:
Use the formula y=mx+b
m is the slope and b is the y intercept
the graph starts on 1 on the y axis so you replace 1 for b
the slope goes up 3 and over one, giving the fraction 3/1 or just 3. so you replace 3 for m.
Find cos 0, where 0 is the angle shown.
Give an exact value, not a decimal approximation.
Answer:
8/17
Step-by-step explanation:
what is the volume of the prism
Answer:
36 unit cubed
Step-by-step explanation:
V = b * h * l
V = 6 * 3 * 2
V = 36
What is the positive solution to the equation 0=1/3 x^2 -3
Answer:
x=3
Step-by-step explanation:
To solve for x, get x alone on one side of the equation.
First, add 3 to both sides.
3 = 1/3x^2
Multiply each side by 3
x^2 = 9
Take the square root of both sides
x = + or - 3
You want the positive solution, so x = 3
82% of what number is 492?
answer
600
Step-by-step explanation:
Step 1: If 82% of a number is 492, then what is 100% of that number? Setup the equation.
492/82%=Y/100%
Step 2: Solve for Y
Using cross multiplication of two fractions, we get
82Y = 492 x 100
82Y = 49200
Y=49200100=600
19) The city of Amsterdam is 12 meters below sea level. Lammefjord, a city in Denmark, is 17
meters below sea level. How much higher is Amsterdam than Lammefjord?
Answer:
Amsterdam is 5 meters higher than Lammefjord.
Step-by-step explanation:
17 m - 12 m = 5 m
Consider the sequence 6, 11, 16, 21 . . . . What is the 50th term in this sequence?
Answer:
251
Step-by-step explanation:
Tn=5n+1
e.g.T1=5(1)+1
=6
e.g.T2=5(2)+1
=11
e.g.T3=5(3)+1
=16
e.g.T4=5(4)+1
=21
Answer:T50=5(50)+1
=251
Which of the following ordered pair could NOT be included in this set if it is a function?
{(-4, 2), (3, 6), (4,3), (x, y) }
A (x, y) = (-3, 6)
B (x, y) = (1, 2)
C (x, y) = (3,6)
D (x, y) = (4, -3)
Answer:
B is the right answer and if you add
ASAP PLEASE HELP ME!!!!!!!!!
You rotate the door 180°.
What does this mean in the
context of the situation?
Explain.
Write an equivalent expression to
3² x 15 x 54
Equivalent Expression: 9x + 15x = 54
Step-by-step explanation:
First, yo would do 3^2 which is 3 times 3 equals 9.
So, it would be 9x + 15x = 54
Then, you combine like terms, 9x + 15x
So 9+15= 24x
Last, would be 54 = 24x
divide by 24 onto both sides and then x will be by itself and then it will give you an answer.
Answer: 2.25
Americans consume on average 92 pounds of chicken per year, with a standard deviation of 10.3 pounds. What is the probability that a sample of 50 people will have consumed an average of 100 pounds or more?
Answer:
0.2187
Step-by-step explanation:
Americans consume on average 92 pounds of chicken per year, with a standard deviation of 10.3 pounds. What is the probability that a sample of 50 people will have consumed an average of 100 pounds or more?
We to find
x ≥ 100 pounds
To solve for the above question, we use the z-score formula
z = (x-μ)/σ, where
x is the raw score = 100 pounds
μ is the population mean = 92 pounds
σ is the population standard deviation = 10.3
Hence:
z = (100 - 92)/ 10.3
z = 8/1.46
z = 0.7767
Probability value from Z-Table:
P(x<100) = 0.78133
P(x>100) = 1 - P(x<100) = 0.21867
Approximately = 0.2187
Therefore, the probability that a sample of 50 people will have consumed an average of 100 pounds or more is 0.2187
Express the decimal as a fraction
Answer:
8/9
Step-by-step explanation:
Answer:
4/5
Step-by-step explanation:
HURRRY HELPPP PLEASE FIND THE AREA
Answer:
25 square units
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
since this is a square the area is 25
Do whatever is easiest for you, thanks !!!!
Answer:
there is going to be a girl that says she has answers in a pdf don't go into it
it will gib=ve you a virus
Step-by-step explanation:
Which expression is equivalent to -4(7-2m)+11m
answer choices:
a. 19m
b. -28+19m
c. -28+3m
d. -9m
I NEED HELP ASAPPP
please give me a correct answer!!
Answer:b
Step-by-step explanation:
What is the product of a+3 and −2a2+15a+6b2?
−2a3+9a2+45a+24b2
−2a3+21a2+45a+24b2
−2a3+9a2+45a+6ab2+18b2
−2a3+21a2+45a+6ab2+18b2
Answer:
-2a³ + 9a² + 6ab² + 45a + 18b²Step-by-step explanation:
(a + 3)×(−2a² + 15a + 6b²) =
= a×(−2a² + 15a + 6b²) + 3×(−2a² + 15a + 6b²) =
= -2a³ + 15a² + 6ab² - 6a² + 45a + 18b² =
= -2a³ + 9a² + 6ab² + 45a + 18b²
The product [tex](a+3) * (-2a^2+15a+6b^2)[/tex] is [tex]-2a^3+9a^2+ 45a +6ab^2 + 18b^2[/tex]
What is product?The product of numbers or expressions is gotten by multiplying them
The product expression is represented as:
[tex](a+3) * (-2a^2+15a+6b^2)[/tex]
Expand the expression
[tex]-2a^3+15a^2+6ab^2 -6a^2 + 45a + 18b^2[/tex]
Collect like terms
[tex]-2a^3+15a^2 -6a^2+ 45a +6ab^2 + 18b^2[/tex]
Evaluate the like terms
[tex]-2a^3+9a^2+ 45a +6ab^2 + 18b^2[/tex]
Hence, the product [tex](a+3) * (-2a^2+15a+6b^2)[/tex] is [tex]-2a^3+9a^2+ 45a +6ab^2 + 18b^2[/tex]
Read more about products at:
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A department store purchases screen-printed t-shirts at a cost of $5 per shirt. The store marks up the price 150% and puts them on the sales floor. Every month that a t-shirt doesn’t sell, the store reduces the selling price by 25%. What is the selling price of a t-shirt after one monthly markdown?
In ΔEFG, g = 6.1 cm, f = 7.3 cm and ∠F=69°. Find all possible values of ∠G, to the nearest 10th of a degree.
Answer:
51.3
Step-by-step explanation:
LN
and
OQ
are parallel lines.
Which angles are corresponding angles?
pls help !!
For the triangle shown below, complete the following table.
Note: Use slash (/) to separate numerator and denominator
sin A
sin C
cos A
cos C
Answer:
Cos=C
Step-by-step explanation:
Fax cause triangle=45 angle so 45/5=8
A search and rescue drone can scan 0.5 hectare in 2 minutes. How many hectares per minute can the drone scan? 5/10 ha | 2 min = 5/10×2/1 yes or no
Answer:
Drone will take 0.25 hectare per minute to scan the area.
Step-by-step explanation:
By using unitary method,
A search and rescue drone takes 2 minutes to scan the area = 0.5 hectare.
Area scanned by the drone in 1 minute = [tex]\frac{\text{Total area scanned}}{\text{Total time taken}}[/tex]
= [tex]\frac{0.5}{2}[/tex]
= 0.25 hectare per minute
Therefore, drone will take 0.25 hectare per minute to scan the area.
Ms. Rhodes purchased 8 pounds of potatoes for $18.08. At this rate, what is the cost per pound of potatoes? Use a proportion to solve. include how you did this work <3
Answer:
$2.20
Step-by-step explanation:
If you do long division you get 2 dollars as total with a decimal of 20 do that's your answer.
Answer:
The cost per pound of potatoes is $2.26.
Step-by-step explanation:
You have to divide the total cost by the total pounds.
So in this case, the total cost is $18.08.
There is a total number of 8 pounds.
So you do:
$18.08 / 8 pounds
=
$2.26/lb of potatoes
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