-2(y-1) = 9
Use distributive property:
-2y + 2 = 9
Subtract 2 from both sides
-2y = 7
Divide both sides by-2:
Y = -7/2
Cory is a bird watch he estimated that 30% of the birds American , 20 % ne eyed , and 20 designs n simulation Let , 1 and 2 represent American robins Let and 4 represent -eyed Let and 6 represent song sparrows Let 78and 9 represent other birds The table shows the simulation results. 05716 16803 965683217733855 76635 922908886472794 14333 0594377510 7405187238 79019 97895 8648794036 1274924005 According to this simulation, what is the probability that at least one of the next five birds he sees is a robin? O A. 0.45 B. 0.6 C. 0.75 D. 0.3
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.
Learn more about probability here: https://brainly.com/question/24756209
#SPJ2
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
Choose an acre of land in Canada at random. The probability is 0.45 that it is forest and is 0.03 that it is pasture. What is the probability that the chosen acre is not forested?
a. 0.03
b. 0.45
c. 0.55
Answer:
c. 0.55
Step-by-step explanation:
A chosen acre of land is forested and not forested are complimentary event , so let :
F = Chosen land is forested
F = Chosen land is not forested
....and we know F+F = S
where S is sample space and we know probability ocer whole sample space is 1 , that is P(S)=1 , and we know F and F are independent so
P(F+F) = P(S)
P(F) + P(F)=1
We have given that probability of forest land in randomly chosen an acre land in Canada have probability 0.45 so P(F)=0.45 so ,
0.45 + P(F) = 1
P(F) = 1 - 0.45
P(F) = 0.55
Hence, the probability that the chosen acre is not forested is 0.55
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:
radius of a coin is 3cm then calculate its surface area
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
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
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.
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!
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
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.
______________________________I don’t understand this it’s a flocabulary called subtracting inteegrrd
Answer:
- 8 + (- 10)
Step-by-step explanation:
- 8 + (- 10) [.°. (-) × (+) = (-)]
- 8 - 10
Please give me the correct answer.
Step-by-step explanation:
4n = - 6
n = - 6/4
n = - 3/2
And that it
Answer:
n = 1.5
Step-by-step explanation:
So, you left off on where we subtracted 40 from both sides.
34 - 40 = -6
4n = -6
Now, divide both sides by 4 to ultimately isolate the variable:
4n/4 = -6/4
Therefore your answer is -1.5
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
In a rectangle, the length is 7 m less than three times the width and the area is 111 m. Approximate the dimensions to the nearest tenth of a meter.
Answer:
The dimensions are 7.4m by 15.1 m (to the nearest tenth).
Step-by-step explanation:
Area = length * width
If the width = x then the length = 3x - 7 so
Area x(3x - 7) = 111
3x^2 - 7x - 111 = 0
Using the quadratic formula:
x = [ -(-7) +/- √((-7)^2 - 4*3*-111)] / (2*3)
x = 7.36, -5.03.
The width must be positive s it is 7.36 m.
The length = 3(7.36) - 7
= 15.08 m.
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
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
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:
10, 10, 10, 12, 14, 16, 16, 18, 18, 18, at what percentile is 14?
Answer:
tijjiiowoowowowooq2o222222
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
(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
Arithmetic mean between -2 and 58
Answer:
I think its true
Step-by-step explanation:
Michael is putting information on a rectangular display board. The area of the display
1
board is 8 feet squared. The length of the display board is 2 feet. What i the width
ż
2
of the display board?
Answer:
4 feet
Step-by-step explanation:
8 /2 = 4
URGENT!!!! PLS HELP MEEE DUE IN 5 MINUTEESS!!
1) The table represents some points on the graph of a linear function. Which function represents the same relationship?
A) g(x) = 2x
B) g (x) = x - 3
C) g(x) = x - 8
D) g(x) = 2x - 8
X | 5 | 7| 9| 10|
Y | 2 | 6| 10| 12|
2) what appears to be the range of the part of the function shown on the grid?
A) y > 0
B) y > 2
C) y < 2
D) y > -5
Look at the image for question 2!
Please don’t answer just for points! If u get it correct I will name u bainliist
Answer:
the answer is c
Step-by-step explanation:
I saw it said it was due in 5 min so i ryed to solve fastt
Hope this helps!
Answer:
D and C
Step-by-step explanation:
1) The answer is D
g(x) = 2x-8 if we put the corresponding values of x in the table we get the exact same values of y example
[tex]g(x)=2x-8\\g(5)=2(5)-8\\g(5)=2\\g(7)=2(7)=8\\g(7)=6[/tex]
so we can see that our values match with the table's values for part D)
2)The answer is C
Range corresponds to the values of y and here the function in the image shows the maximum value of y is 2 and then it decreases to 1 , 0 , -1 and so on so option C is correct y<2
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.
given a, b, and c, classify it.
Answer:
b
Step-by-step explanation:
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.
To learn more about the arithmetic sequence;
https://brainly.com/question/29616017
#SPJ7
Interpreting Function Graphs Digital Matching Activity
Answer:
whats the question
Step-by-step explanation:
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
To learn more on mixed fractions click:https://brainly.com/question/14212041
#SPJ2
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