Answer:
c
Step-by-step explanation:
i did this in my head
Answer:
F
Step-by-step explanation:
to find x coordinate for midpoint, add both the x coordinates then divide by two. we get x=1
to find y coordinate for midpoint, add both the y coordinates then divide by two. we get y=2
so the coordinates of midpoint is (1,2), which is F
47.5% of children say that chocolate chip cookie is their favorite kind of cookie. If you randomly select 12 children find the probability that: a) at least 10 of them say that chocolate chip cookie is their favorite cookie. B) four of them say that chocolate chip cookie is their favorite cookie. C) Find the mean and standard deviation for this sample.
Answer: a) 0.0125 b) 0.1454 c) Mean = 5.7, standard deviation = 1.73
Step-by-step explanation:
Let x = Number of children say that chocolate chip cookie is their favorite kind of cookie.
x follows binomial distribution.
Binomila distribution formula:
[tex]P(X=x)=\ ^nC_xp^x(1-p)^{n-x}[/tex] , where p = probability in each trial, n = sample size, x= number of successes
Sample size : n= 12, p=0.475
a)
[tex]P(x\geg10)= P(x=10)+P(x=11)+P(x=12)\\\\=\ ^{12}C_{10}(0.475)^{10}(1-0.475)^{2}+^{12}C_{11}(0.475)^{11}(1-0.475)^{1}+^{12}C_{12}(0.475)^{12}(1-0.475)^{0}\\\\=\dfrac{12!}{2!10!}(0.475)^{10}(0.525)^{2}+(12)(0.475)^{11}(0.525)^{1}+(1)(0.475)^{12}\\\\\approx0.0125[/tex]
b)
[tex]P(x=4)= ^{12}C_{4}(0.475)^4(0.525)^{8}\\\\=\dfrac{12!}{4!8!}(0.000293798)\\\\=0.1454[/tex]
c) Mean = np
= (12)(0.475) =5.7
Standard deviation = [tex]\sqrt{np(1-p)}[/tex]
[tex]=\sqrt{12\times0.475\times0.525}\\\\=\sqrt{2.9925}\approx1.73[/tex]
Cube M has an edge length of
8 centimeters. The edge length is
doubled to create Cube N. How many
times greater is the surface area of Cube
N than the surface area of Cube M?
Answer:
4
Step-by-step explanation:
6*(8*2)^2/(6*8^2)=2^2=4
help me pls!!!!!!!!!
thank u
Answer:
A
Step-by-step explanation:
Since we have y = 5, the only y value on the question that equals 5 is A.
The expression 5 + 5x is equivalent to the expression
Answer:
5(1+x)
Step-by-step explanation:
Will give brainliest to first answer
Answer:
x-28
y46
z65
Step-by-step explanation:
In a group of 60 students, 15 liked maths only, 20 liked science only and 5 did not liked any of two subjects. How many of them liked at least one subject?
Answer:
35
Step-by-step explanation:
Given
n (A) = 15
n (B) = 20
Students who do not like any subject = 5
Hence, number of students who would like either both or either of the two subjects = 60-5 = 55
n (A or B) = n (A) + n (B) - n (A and B)
Number of students linking both the subjects
55 - 15-20
= 55-35 = 20
Number of students linking only one subject = 60-20-5 = 35
What are these two answers,explanation needed
Step-by-step explanation:
1) k(x)= -3x²-3
k (-2)= -3×(-2)²-3
= -12-3
= -15
3)k(a)=a+4
k(0)= 0+4=4
hope it helps.
Carmen is 4 1/4 years younger than Antoine. Katy is 5 1/2 years older than Carmen, To the nearest year, what is the difference in Antoine's age and Katy's age
Answer:
katy is 10 years older than antoine
Step-by-step explanation:
plz mark brainliest.
BRAINLIEST FOR THE CORRECT AWNSER!! PLEASE PUT THE LETTER AWNSER AND EXPLAIN DO NOT LIE THANK YOU What is the goal of a proof by contradiction? A. The contradiction of the statement is proven false, so the original statement is therefore proven true. B. The contradiction of the statement cannot be determined, so the proof is invalid. C. The truth of the statement cannot be determined, so the proof is invalid. D. The contradiction of the statement is proven true, so the original statement is therefore proven false.
Answer:
A
Step-by-step explanation:
We assume the opposite and then get to a point where we get a false statement. That proves that the the opposite of the opposite (What we originally wanted to prove) is true.
Alex had 5 1/2 baskets of strawberries. She sold 2 9/10 baskets. How many baskets of strawberries does she have left?
Answer:
2 3/5
Step-by-step explanation:
Answer:
2 3/5 (two and three fifths)
Step-by-step explanation:
m a t h
how do u this? please explain...
The store price of a t-shirt is $50. if the markup set by the store is 30%. Calculate the markup the price set by the t-shirt.
Answer:
I won't answer but I'll give a hint
Step-by-step explanation:
1. Markup = markup percent x cost/store price
2. Selling price = markup price + cost/store price
3. Discount amount = discount percent x cost/store price
4. Selling price = cost/store price – discount amount
Two more than four times a number is 11. Write the algebraic equation and solve it please!
Solve using elimination.
-5x - 3y = 20
3x - y = 14
Point Form:
( 11/7 , -65/7 )
Equation Form:
x = 11/7, y = -65/7
PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG
can someone help me solve 2x=9.
Answer:
x = 4.5
Step-by-step explanation:
You can find this ous by dividing 9 by 2, giving you 4.5! Hope this helped!
Simply the product.
(2y – 5)(3y + 1)
A. 6y2 + 13y - 5
B. 6y2 – 13y - 5
C. 6y2 + 17y + 5
D. 6y2 – 13y + 5
Answer:
6y2 - 13y - 5............
Zachary ate 88 out of g gumdrops. Choose the expression that shows how many gumdrops Zachary has left.
A. 88-g
B. G+88
C. G
D. G-88
What was the price for one notebook?
Answer:
A notebook at the dollar store costs between 1-2 dollars
What is the value of x?
Answer:
40
Step-by-step explanation:
4x=180-20
4x=160
X=40
100 points! Please help it is do soon. I will mark brainliest
Answer: (-2,1) is the coordinate if rotated 270 degrees from origin.
Step-by-step explanation:
Answer:
A' = (-1,2)
Step-by-step explanation:
The other person is in fact incorrect. The reason why he/she is incorrect is because, it says "rotation about the origin." which means that is flips around the middle. 90 degree rotation would be (1,-2), a 180 degree rotation would be (-2,1), a 270 rotation would be (-1,2).
Therefore, your answer would be A' = (-1, 2)
2X + 10 = -2
3X -4 311
X=__
X =
4X - 1 = -5
X =
I!!!
X =
2X + 5 = 21
-3x - 2 = -17
X =
Answer:
#1: -6
#2:5
#3: -1
#4: 8
#5: -5
Step-by-step explanation:
I found what could go into each for example 2(-6) +10= -2.
2 x -6 is -12 and then you add to ten to that and get -2.
Answer: Answer:
1. -6
2. 5
3. -5
4. 8
5. 5
Hope this helps!
The simplest rationalisation factor of root 3-root 5
Answer:
The simplest rationalising factor of 2sqrt(5)-sqrt(3) is 2sqrt.
Step-by-step explanation:
√3+√5 rationalising factor=√3+√5×√3-√5=√3^2=3-5= -2.
I hope it is helpful. Please mark it as Brainliest Answer.
If a quadrilateral is a rectangle, then it is a parallelogram (True or False)
simplify
11x-4x+26
i need help quick
Answer:
Step-by-step explanation:
Here you go mate
Step 1
11x-4x+26 Equation/Question
Step 2
11x-4x+26 Simplify
11x-4x+26
Step 3
11x-4x+26 Combine like terms
(11x+-4x)+(26)
Step 4
(11x+-4x)+(26) Add them together
answer
7x+26
Hope this helps
A circle's circumference is approximately 88 cm. Estimate the diameter, rounding to the nearest WHOLE number. (don't forget your units and use 3.14 if you need to use )
Answer:
diameter = 28 cm
Step-by-step explanation:
circumference = 2πr
88 cm = 2 * 3.14.*r. ( π = 3.14 )
r = ( 88)/(3.14*2)
r = 14 cm
diameter = 2 * radius
diameter = 2 * 14 cm
diameter = 28 cm
Answer:
28 cmStep-by-step explanation:
Circumference formula:
C = πdSubstitute values of circumference and the π to find the diameter:
d = C/πd = 88/3.14 = 28 cm (rounded)Mike a local auto mechanic charges a certain amount to diagnose and repair car he bases his price on the amount of time that it takes for the car to be repaired what is the rate of change in the graph.
Answer:
200
Step-by-step explanation:
The time spent repairing the car is five hours while the total cost is about 200 bucks
Explain what the point (20,160) represents in the context of the situation? Check all boxes that apply A. 160 shirts cost $20
B. 20 shirts cost $160
C. 20,160 shirts cost money
D. The total cost of shirts is 20,160
Answer:
option B is correct option.
Step-by-step explanation:
Explain what the point (20,160) represents in the context of the situation? Check all boxes that apply
Looking at the graph we come to know that 20 shirts cost $160 because x -axis represent number of shirts and y-axis represent Total Cost
So, the point(20,160) means x = 20 and y=160
We have 20 shirts and the cost is $160
So, option B is correct option.
F(2)=-5x+6 find value
Answer:
F(x) = 16
Step-by-step explanation:
F = 2. We find the value of -5x by inputting the value of the function into the x value.
F(x) = -5(2) + 6
F(x) = 10 + 6
F(x) = 16
A supermarket had a bags of red grapes for $13 for five bags they also had bags of green grapes purchased at $5.08 for two bags which type of grab is more expensive
One less than five times a number is fewer
than twenty-four.
Answer:
x < 5
Step-by-step explanation:
[tex]5x - 1 < 24\\5x < 25\\x < 5[/tex]
Answer:
any number under 5
Step-by-step explanation:
5(5) -1 =24
so anything under that would equal fewer than 24
Is this what you're asking?