Answer:
C. She could spin a spinner divided into five equal sections three times. On the spinner, four sections represent customers who buy goldfish and one section represents customers who do not buy goldfish.
Step-by-step explanation:
We are told that four out of five customers who bought pets chose goldfish.
Thus;
P(those who bought pets also chose gold fish) = 4/5
Therefore;
P(those who bought pets but do not buy gold fish) = 1 - (4/5) = 1/5
Now, she wants to know the estimated probability that three randomly selected customers buying pets would not buy goldfish.
The probability we have is 1/5.
Therefore,to accommodate the 3 randomly selected customers, we have to multiply the numerator and denominator for each probability by 3.
Thus;
P(those who bought pets also chose gold fish) = 4/5 × 3/3 = 12/15
P(those who bought pets but do not buy gold fish) = 1/5 × 3/3 = 3/15
Looking at the new probabilities, the simulation she can use is to divide a spinner into five equal sections three times so that for each section, we can have the probability of 1/5 and 4/5.
Thus, option C is correct.
I need help with geometry
Answer:
B. x = 4
Step-by-step explanation:
The two triangles have two congruent sides and a congruent angle. You can say ΔBAC ≅ ΔEDF because of SAS. Corresponding parts of congruent triangles are congruent, so you can say:
BC = EF
And we can substitute their values:
6x - 1 = 23
6x = 24
x = 4
The rectangular pyramid below has a volume of 200 m3. What is the height of the rectangular pyramid in meters? If the base is 6 by 5 meters
Answer:
6.67meters
Step-by-step explanation:
The formula for the volume of a rectangular pyramid = Length × Width × Height
From the question
Volume = 200m³
Base of the pyramid = Length × Width = 6m by 5m = 6m × 5m
To find the height of the pyramid = Volume/Length × Width
Height = 200m³/ 6m × 5m
Height = 6.67m
Height of the rectangular pyramid in meters = 6.67 m
N = 16 - (3 + 2) I dont know what this is.
Answer:N=11
Step-by-step explanation: 16-5 is 11, and that is equal to N
Complete the square
to find the vertex
of this parabola.
2.
х
- 16 Y-4 x-12=0
Answer:
Vertex coordinates; (h,k) = (2, -1)
Step-by-step explanation:
Vertex form of a parabola is;
y = a(x - h)² + k
Now, we are given;
x² - 16y - 4x - 12 = 0
Rearranging, we have;
x² - 4x = 16y + 12
Let's complete the square on the left hand side;
First add square of half of the coefficient of x to both sides;
x² - 4x + (-½ × 4)² = 16y + 12 + (-½ × 4)²
x² - 4x + 4 = 16y + 12 + 4
LHS can be expressed as;
(x - 2)² = 16y + 16
16y = (x - 2)² - 16
Divide both sides by 16 to get;
y = (1/16)(x - 2)² - 1
Comparing this with y = a(x - h)² + k, we have;
a = 1/16
h = 2
k = -1
(h,k) = (2, -1)
Find the size of the angle 3x.
3x=
Answer:
60 degrees
Step-by-step explanation:
a straight line is 180 degrees
2x= 120 degrees
x=60 degrees
Answer:
The value of x is 60°
Step-by-step explanation:
For a given Straight Line
We know that, The straight angle is an angle equal to 180°
So,
3x = 180
Divide by 3 from both side
3x/3 = 180/3
x = 60°
Thus, The value of x is 60°
-TheUnknownScientist
Help and explanation if you don’t know don’t answer
Answer:
A is false (Y is far left of 0, so it is a negative. H is close to 0 so it is positive. Y is farther from zero, so it is bigger. For example, Y could be -7, and H could be 3. The sum of -7 and 3, would be -5.
B is false (E is on the left of 0 so it is negative. Y is on the left of zero so it is also negative. Negative divided by a negative is a positive )
C is false (H is positive and E is negative. Positive times a negative equals a negative.)
D is true (A is close to zero, so it is a small positive number. H is farther from zero, so it is a larger positive number. For example, A can be 2 and H can be 5. So, 3 - 5 would equal a negative.)
PLEASE HELPP I HAVE A TIMER. which equation represents the graphed function?
a.y=4x-2
b.y=-4x-2
c.y=1/4x-2
d.-1/4x-2
Answer:
C. y = 1/4x -2
Please mark as brainliest if answer is right
Have a great day, be safe and healthy
Thank u
XD
2. The length of a rectangle is 18 centimeters and the width is 6 centimeters. A similar rectangle
has a width of 2 centimeters. What is the length of the second rectangle? (Sketch a picture)
Answer:
6
Step-by-step explanation:
I am unable to sketch a picture for you but I will do my best to help you understand. We know that our length of the first rectangle is 18 cm and the width is 6 cm. At the moment we don't need 18 so we'll put that to the side for now and focus on the width. We understand that in a second similar rectangle, the width is 2 centimeters. in order to find our scale, we must divide the larger width by the smaller width. This means we will divide 6cm by 2 cm. 6/2=3 This means that we also divide 18 by 3 since the similar rectangle is smaller and we are figuring out the missing side. After dividing 18 by 3 we should get an answer of 6. 18/3=6 Which means that our similar rectangle has a length of 6 cm and a width of 2 cm.
I also want to mention that similar rectangles are not the same rectangle however you can think of them as enlargerd/shrunk versions of the original rectangle. I hope this helps.
Johnny wants to know how many students in his school enjoy watching science programs on TV. He poses this question to all 26 students in his science class and finds that 75% of his classmates enjoy watching science programs on TV. He claims that 75% of the school's student population would be expected to enjoy watching science programs on TV. Is Johnny making a valid inference about this population? (5 points)
a
Yes, it is a valid inference because his classmates make up a random sample of the students in the school
b
Yes, it is a valid inference because he asked all 26 students in his science class
c
No, it is not a valid inference because he asked all 26 students in his science class instead of taking a sample from his math class
d
No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
Answer: d. No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
Step-by-step explanation: this i because there is a possible bias present in his population
Hope this helps!
The perimeter of a rectangular feild is 60 ft and it’s width is 20ft find the area of this feild
give brainliest for this pls
A=200ft²
Answer:
200ft?
Step-by-step explanation:
A recipe that serves 4 people uses 3 onions. How many onions are needed to serve 20 people?
Answer:
15 onions are required.
4x^2-16=x^2+32
Using reverse PEMDAS
Answer:
x = ±4 (x = 4 and x = -4)
Step-by-step explanation:
4x²-16 = x²+32
3x²-16 = 32
3x² = 48
x² = 16
x = ±4
Therefore, x = 4 and x = -4
Find the value of x.
101 x +29
Answer:
x = 50
Step-by-step explanation:
101 + (x + 29) = 180
130 + x = 180
x = 180 - 130
x = 50
Answer:
50°
Step-by-step explanation:
in order ro find x you would need to solve for 101° ( x + 29) = 180° if you replace x with 50 then you equation would be true!
The heights of students are normally distributed with a mean of 64 inches and a standard deviation of 3 inches. Find the area under the curve for heights between 58 and 78 inches
(no links please!)
Answer:
0.9772 or 97.72%
Step-by-step explanation:
P(58<X<78) = normalcdf(58,78,64,3) = 0.9772484056 = 0.9772
The area under the curve would be 0.9772 or 97.72%
Please help I’ll make you the brainiest
Answer:
B
Step-by-step explanation:
7-3=4
4x4=16
roman numbers*
XCIX = LV _ XXXIII
XI
i need to know what signs go where is it "+ +" or "- +"
or "+ -" or "- +" ???
Answer:
The sign that go in the expression is - "+ +"
Step-by-step explanation:
Given - XCIX = LV _ XXXIII _ XI
To find - i need to know what signs go where is it "+ +" or "- +" or "+ -" or "- +" ???
Proof -
We know that from the table that,
XCIX = 99
LV = 55
XXXIII = 33
XI = 11
So,
The equation becomes
99 = 55 _ 33 _ 11
Now,
If we put + + then the equation becomes
99 = 55 + 33 + 11
⇒99 = 99
It satisfies.
Now,
If we put - + then the equation becomes
99 = 55 - 33 + 11
⇒99 = 33
It does not satisfies.
Now,
If we put + - then the equation becomes
99 = 55 + 33 - 11
⇒99 = 77
It does not satisfies.
So,
The sign that go in the expression is - "+ +"
The correct mathematical signs are "++" to have XCIX = LV + XXXIII + XI
This is the application of Roman Numerals.
Given the expression XCIX = LV _ XXXIII _XI
We need to know which of the signs will fit in the space provided in the equation.
First, we need to convert the roman numeral to roman figures as shown:
XCIX = 99
LV = 55
XXXIII = 33
XI = 11
Taking the sum of the right-hand side of the equation;
55 + 33 + 11 = 99
This shows that the correct mathematical signs are "++" to have
XCIX = LV + XXXIII + XI
Learn more here: https://brainly.com/question/25576958
Students who attend Anytown College pay either in-state or out-of-state tuition, depending on where they reside. The amount, I, spent on in-state tuition and the amount, O, spent on out-of-state tuition for a randomly selected student both follow a Normal distribution.
The mean and standard deviation of the sum S = I + O of tuition for a randomly selected pair of in-state and out-of-state students are μS = $6,348.75 and σS = $1,508.48.
Use the z-table to answer the question.
What is the probability that the sum of a randomly selected pair of in- and out-of-state students has a tuition charge of more than $8,000?
0.0009
0.1368
0.8632
0.9991
Answer:
The correct answer is 0.1368
Step-by-step explanation:
Got it right on Edge assignment
simplify………………………. look at the picture for the question thanks
Answer:
C) 2y^6/x^8
Step-by-step explanation:
Mathtype won't work on here, sorry.
Hope this helped! :)
1/2a - 4
Pls help
Meeeeee
Eeeeeeee
−10(9c−7c+8)−8c
pls help
Which of the following values is not in the solution set of the inequality 7x − 5 > 29?
A. 4
B. 5
C. 6
D. 7
Answer:
A.4
Step-by-step explanation:
8x + 2y = 30
7x + 2y = 24
Solve the system of equations
Answer:
X=6, y=-9
Step-by-step explanation:
ASAP!!!!!!!!!!!!!!!!
A dice is rolled. What is the probability that a 4 is rolled?
A) 1/2
B) 1/3
C) 2/3
D 1/6
This is for my high school final exam so please answer fast
Answer:
I think 1/6
Step-by-step explanation:
There are 6 sides on a dice and only one 4. So then you have a 1/6 chance of rolling 4.
hope this help!
Answer:
1/6
Step-by-step explanation:
There are 6 numbers on a die 1,2,3,4,5, and 6. If one number was picked out it would be 1/6
What is 4/5 divided by 2/25 - 5/16?
(Please show your steps.)
hello please help i’ll give brainliest
Answer:
C i think
Step-by-step explanation:
Once an action is caused, a reaction immediatley happens
Find the volume of the cylinder.
A. 19.625 cm3^
B. 50 cm3^
C. 157 cm3^
D. 628 cm3^
hii! help asap. i’ll give brainliest thanks!
Answer:
B
Step-by-step explanation:
Answer:
It's acceleration will change
Step-by-step explanation:
The question states that only the force on the object increased, that will cause it to go alot faster than before due to the increase in force.
Find Area in (Ft^2) help needed asap marking brainliest
Answer:
168
Step-by-step explanation:
I do believe
What is the value of the 6 in the number 1,265,432
Answer:
The ten thousandth number (or 60,000)
Step-by-step explanation: