Answer:
I believe the answer is C. 0.75
Step-by-step explanation:
The probability that at least one of the next five birds he sees is a robin is 0.75.
ProbabilityBased on the stimulation result shown on the table we can seen that other birds appeared at least 15 times.
Hence:
P(A)=15/20
P(A)=0.75
Therefore the probability that at least one of the next five birds he sees is a robin is 0.75.
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A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean length of fish in the tank is 15 inches, and the standard deviation is 6 inches. A random sample of 46 fish is taken from the tank. Let x be the mean sample length of these fish. What is the probability that x is within 0.5 inch of the claimed population mean?
Answer:
0.4246
Step-by-step explanation:
Given data:
mean ( u ) = 15 inches
std ( б )= 6 inches
sample size( n ) = 46
ux = mean sample length
Determine the probability that x within 0.5 inch of the claimed population mean
ux = u = 15
бx = б/ √ 46 = 6 /√ 46 = 6 / 6.78 = 0.88
Hence the P( 14.5 < x < 15.5 )
= P ( [14.5 - 15 / 0.88 ] < z < (15.5 - 15) / 0.88) )
= P ( -0.5682 < z < 0.5682 )
= P ( z < 0.5682 ) - P ( z < -0.5682 )
= 0.7123 - 0.2877 ( from Z table )
= 0.4246
Henry earned $596.45 for working 32 hours. What is Henry's hourly wage? Round to the nearest cent.
Answer:
18.6390625
Step-by-step explanation:
Answer: $18.64
bcuz yes
A skydiver jumped from a plane at 1000 ft. Ten seconds into the jump she looked at her altimeter and read 800 ft. How far did she fall in one second?
Answer:
she drops at 20 ft per second
Step-by-step explanation:
if she drops 200 ft per 10 seconds, then you would divide 200 by 10 to get 20 ft per second
Willie rented a bike from bikes-R-Us. It cost $18 plus 5 per hour willie paid a total of $48
Answer:
He rented the bike for 6 hours.
Step-by-step explanation:
To solve this you would first subtract the initial amount which is $18 to $48. You would then divide 5 by $30 Since you have to pay $5 per hour, and you would end up with 6 which is the number of hours that willie rented the bike for.
Answer:
ok
Step-by-step explanation:
4) Which graph represents a function?
Answer:
C
Step-by-step explanation:
The other graphs do not pass the vertical line test (if you draw a vertical line through the line graphed, it should pass through once), but graph c does pass the test.
Can someone please help, ty!!
(Will mark brainliest)
Answer:
25%
Step-by-step explanation:
Each quartile is 25% of a the whole box plot so it would have to be 25%
if the question ask you for ever 6 up of raisins, there are ________ cups of pretzels.
and your answers are
9
3
12
6 what would your answer be
Answer:
I think it is 12 but still not sure
Interpreting Function Graphs Digital Matching Activity
Answer:
whats the question
Step-by-step explanation:
Plz help need asap very important test if you dont know then dont answer and brainliest
Answer:
2622 cubic answers
Step-by-step explanation:
Triangle volume=1026 in
9*12=108
108/2=54
54*19=1026
Volume of Rectangle part
7*12=84
84*19=1596
1026+1596=2622
What is the area of a circumference of 22pi
Answer:
A = 121π
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesGeometry
Circumference: C = 2πrArea of a Circle: A = πr²Step-by-step explanation:
Step 1: Define
C = 22π
Step 2: Find radius r
Substitute: 22π = 2πrIsolate r: 11 = rRewrite: r = 11Step 3: Find Area
Substitute: A = π(11)²Evaluate: A = 121πAnd we have our final answer!
Chris and Mary are selling tickets at their class play. Chris is selling student tickets for $4.00 each, and Mary selling adult tickets for $6.50 each. If their total income for 21 tickets was $124.00, how many tickets did Chris and Mary sell individually?
Answer:
Chris sells 5 tickets and Mary sells 16 tickets
Step-by-step explanation:
System of Equations
To solve the problem we call:
x = number of tickets sold by Chris
y = number of tickets sold by Mary
They sold a total of 21 tickets, thus:
x + y = 21 [1]
Mary sold adult tickets for $6.50 each and Chris sold student tickets for $4.00 each. The total income was:
4x + 6.5y = 124 [2]
Multiplying [1] by -4:
-4x - 4y = -84 [3]
Adding [2] and [3]:
2.5y = 40
Dividing by 2.5:
y = 40/2.5
y = 16
From [1]
x = 21 - 16 = 5
x = 5
Chris sells 5 tickets and Mary sells 16 tickets
Look at the figure below:
Triangles ABC and ACD have a common side AC. E is the point of intersection of AD and BC. AE equals ED and CE equals BE.
Based on the figure, which pair of triangles is congruent by the Side Angle Side Postulate?
Triangle ACD and triangle ACE
Triangle AEC and triangle DEC
Triangle ABE and triangle ACE
Triangle AEB and triangle DEC
Answer:
D) Triangle AEB and triangle DEC
Step-by-step explanation:
This was the correct answer shown one the test took and i can say i know for sure it wasnt A, B, or C.
Answer:
D) Triangle AEB and triangle DEC
Step-by-step explanation:
10, 10, 10, 12, 14, 16, 16, 18, 18, 18, at what percentile is 14?
Answer:
tijjiiowoowowowooq2o222222
Evaluate. F(x)=3x-4;f(-2)
Answer:-10
Step-by-step explanation:
F(-2) means substitute -2 in x
=3(-2)-4= -6-4
=-10
Which of the following is an arithmetic sequence?
OA) 0, 5, 11, 18, 24, ...
B) -2, -4, -8, -16, -32, ...
OC) 0, 6, 12, 18, 24, ...
OD 1, -3, 9, -27, 81,...
Answer:
b. -2,-4,-8,-16,-32 thats the answer i think
The arithmetic sequences are:
B) -2, -4, -8, -16, -32, ...
C) 0, 6, 12, 18, 24, ...
The correct options are B and C.
What is an arithmetic sequence?A series of integers called an arithmetic progression or arithmetic sequence (AP) has a constant difference between the terms.
An arithmetic sequence is a sequence of numbers where each term is obtained by adding a fixed number, called the common difference, to the previous term. We can check which of the given sequences satisfy this definition:
A) 0, 5, 11, 18, 24, ...
The common difference between consecutive terms is not the same: the difference between the first two terms is 5, the difference between the second and third terms is 6, the difference between the third and fourth terms is 7, and so on. Therefore, this sequence is not an arithmetic sequence.
B) -2, -4, -8, -16, -32, ...
The common difference between consecutive terms is multiplied by -2: the difference between the first two terms is -2(-2) = 4, the difference between the second and third terms is -4(-2) = 8, the difference between the third and fourth terms is -8(-2) = 16, and so on. Therefore, this sequence is an arithmetic sequence with a common difference of -2.
C) 0, 6, 12, 18, 24, ...
The common difference between consecutive terms is 6. Therefore, this sequence is an arithmetic sequence with a common difference of 6.
D) 1, -3, 9, -27, 81,...
The common difference between consecutive terms is multiplied by -3: the difference between the first two terms is -3, the difference between the second and third terms is -3(-3) = 9, the difference between the third and fourth terms is -9(-3) = 27, and so on. Therefore, this sequence is not an arithmetic sequence.
Therefore, the arithmetic sequences are options B and C.
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A local grocery store received a new shipment of apples. The apples arrived in 8 crates with 20 apples in each crate. If the store pays $0.21 per apple and sells each apple for $0.79, what would the profit be after selling all of the apples?
A.
$16.24
B.
$22.12
C.
$92.80
D.
$126.40
Which number makes the comparison true?
3.706 < ?
A. 3.704
B. 3.710
C. 3.688
D. 3.009
Answer:
B. 3.710
Step-by-step explanation:
This number makes 7.706 smaller
A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a standard deviation of 11. A. The professor has informed us that 7.93 percent ofher students received grades of A. What is the minimum scoreneeded to receive a grade of A?B. Students who made 57.93 or lower on the exam failedthe course. What percent of students failed the course?C. If 69.5% of the students received grades of C or better, what is the minimum score of those who received C's?
Answer:
88.51
0.085343
67.39
Step-by-step explanation:
Given a normal distribution :
Mean (m) = 73
Standard deviation (s) = 11
Percentage A's = 7.93% = 0.0793
Minimum score needed to receive A :
Using the Z formula
Zscore corresponding to 0.0793 = 1.41
P(x ≥ x) :
Z = (x - m) / s
1.41 = (x - 73) / 11
11* 1.41 = x - 73
15.51 = x - 73
x = 15. 51 + 73
x = 88.51
B. Students who made 57.93 or lower on the exam failedthe course. What percent of students failed the course?
P(x ≤ 57.93)
Z = (x - m) / s
Z = (57.93 - 73) / 11
Z = - 15.07 / 11
Z = - 1.37
P( Z ≤ - 1.37) = 0.085343 ( Z probability calculator)
C.) If 69.5% of the students received grades of C or better, what is the minimum score of those who received C's?
Minimum score of those who received C
Zscore corresponding to 0.695 = -0.51 (Z probability calculator)
Z = (x - m) / s
-0.51 = (x - 73) / 11
11* - 0.51= x - 73
-5.61 = x - 73
x = - 5.61 + 73
x = 67.39
which multiplication equation is false
Question:
Where are the equations?
25-b2=4b it is quadratic?
We are given the equation:
25 - b² = 4b
it can be simplified into the following:
b² + 4b - 25 = 0
In this simplified equation, we can see that it is very similar to the general form of a quadratic equation [ax² + bx + c = 0]
Therefore, we can say that the given equation is Quadratic
the figure below is not drawn to scale. ABCD is a square. ACF and DCE are straight lines. Find ECF
Answer:
<ECF = 45 degrees
Step-by-step explanation:
If ABCD is a square, then the diagonal AC divides angle <C and angle <A in two equal parts. Angles A and C are also 90 degrees each due to the act that the figure is a square. Therefore their bisection would render 90/2 = 45 degrees.
Notice as well that angle <ECF is opposite by the vertex to one of these 45 degree angles, and then it must measure the same amount (45 degrees).
So, <ECF = 45 degrees
radius of a coin is 3cm then calculate its surface area
(1.2x - 3/4y) - (-3/5x + 2.25y)
Answer:
The answer is in this image! Pls mark brainliest :)
Step-by-step explanation:
Answer
9x/5 - 3y
I hope I helped sorry if I didnt
Write two mixed numbers that have a sum of 3 4/5.
Answer:
Step-by-step explanation:
1 and 2/5 and 2 and 2/5
A fraction represented with its quotient and remainder is a mixed fraction. 1 2/5 and 2 2/5 are two mixed numbers that have a sum of 3 4/5.
What is Mixed Fraction?
A fraction represented with its quotient and remainder is a mixed fraction.
We need to find the two mixed numbers whose sum is 3 4/5.
The sum of two mixed numbers is 3 4/5 which is also equal to 19/5.
1 2/5+2 2/5
=7/5+12/5
=19/5
Now 3 4/5=19/5
Therefore 1 2/5 and 2 2/5 are two mixed numbers whose sum is 3 4/5
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Find the value of x that makes m|n.
m
(6x + 10)
(2x + 26)
The value of x is ?
Answer:
x is 9
Step-by-step explanation:
6x+10=2x+26
-2x -2x
4x+10=26
+10 +10
4x=36
--- ---
4 4
x=9
The ratio of boys to girls in band class was 3 to 5. If there were 24 boys. How many girls were in band class?
Answer:
40 girls
Step-by-step explanation:
Set up a proportion where x is the number of girls in band class:
[tex]\frac{3}{5}[/tex] = [tex]\frac{24}{x}[/tex]
Cross multiply and solve for x:
3x = 120
x = 40
So, there were 40 girls in band class.
Answer: There are 40 girls in band class.
____________________________________________________________
The ratio for this problem is:
[tex]\frac{3}{5} = \frac{24}{x}[/tex]
To get from 3 to 24, you would multiply by 8. You need to do the same thing to 5 to get x.
5 times 8 equals 40.
There are 40 girls in band class.
I don’t understand this it’s a flocabulary called subtracting inteegrrd
Answer:
- 8 + (- 10)
Step-by-step explanation:
- 8 + (- 10) [.°. (-) × (+) = (-)]
- 8 - 10
solve for x, if m<2 = 2+6x
Answer:
x = 6
Step-by-step explanation:
Since the triangles are isosceles the two bottom angles are equal. So, 71 + 71 + 2 + 6x would help us find x. Now to solve it.
71 + 71 + 2 + 6x = 180
142 + 2 + 6x = 180
144 + 6x = 180
6x = 180 -144
6x/6 = 36/6
x = 6
What is the value of t?
3.5 (t + 6) = 7
o t= -4
Ot= -0.25
O t = 0.25
O t = 4
Answer:
t=-4
Step-by-step explanation:
t+6=7/3.5
t+6=70/35 (I expanded 7/3.5 by multiplying both numerator and the denominator by 10)
t+6=2 (I divided 70 by 35 to get 2)
t=2-6
t=-4
Answer:
t=-4
Step-by-step explanation:
i took the test on k12
I don't like math jbbbbbb
[tex]\boxed{\bold{Vertical,~(3,0)}}[/tex]
Solution Steps: - Graphing -______________________________ 1.) Graph:Since we know [tex]x=3[/tex], you graph [tex]3[/tex] on the [tex]x[/tex]-axis. And this is an ending, meaning it doesn't go on forever.However, we don't know what [tex]y[/tex] is. So because we don't know what [tex]y[/tex] is we still graph it but it'll go on forever.- You can either graph this like this, OR graph this using desmos.com.
Vertical or Horizontal? [tex]x=[/tex] Horizontal, Left and Right.[tex]y=[/tex] Vertical, Up and Down.- So since we know [tex]x[/tex] is, (Horizontal,) we have to graph [tex]y[/tex], (Vertical.) So to sum this up, this just means whatever variable you don't know yet, that will be the one that you graph as an infinite.
______________________________