Answer:
50 ;
25 ;
5
Step-by-step explanation:
Given that:
Number of multiple choice questions = 100
Number of possible responses = 2
Hence, probability of success, p = 1/2 = 0.5
Using normal approximation :
The expected score = mean = n*p
Expected score (X) = 100 * 0.5 = 50
standard deviation = std(X) = √
Var(X) = n*p*q
q = 1 - p = 1 - 0.5 = 0.5
Variance = Var(X) = (100 * 0.5 * 0.5)
Var(X) = 25
Var(X) = 25
The Standard deviation (Std) = √Var(X)
Std(X) = √25
Std(X) = 5
What is the answer and can you please show your work. Tysm for your help!
Answer: XY=21 YZ=29
Step-by-step explanation: okay so the entire line (XZ) is equal to 50, and its made up of a and a + 8. So you can make an equation out of that.
a+a+8=50
2a+8=50
2a=42
a=21
then you just have XY equal 21, and YZ equal 21+8 or 29.
Answer:
XY = 21
YZ = 29
Step-by-step explanation:
XZ = 50
XY = a
YZ = a + 8
XY + YZ = XZ
a + (a + 8) = 50
2a + 8 = 50
2a = 50 - 8
2a = 42
a = 42 ÷ 2
= 21
hope this helps
ask anything here, physics and math
Answer:
what about python?
Step-by-step explanation:
Also, is it for homework?
2/3 cup of sugar for 24 cookies equal how many cup in 1 cookie?
Answer:
0.02777777777
Step-by-step explanation: 2/3 divided by 24 = 0.02777777777
Help plz:))) I’ll mark u brainliest ASAP 10 points(:(:!!
....
Answer:
B
Step-by-step explanation:
Law of sines and cosines word problem
Answer:
AC = 0.47 mi
BC = 0.51 mi
Step-by-step explanation:
Notice that we are in the case of an acute triangle for which we know two angles ( < A = 63 and < B = 56) and one side (AB = 0.5).
We can find the measure of the third angle using the property of addition of three internal angles of a triangle:
< A + < B + < C = 180
63 + 56 + < C = 180 degrees
< C = 180 - 63 - 56 = 61 degrees.
Now we use the law of sines to find the length of sides AC and BC:
[tex]\frac{0.5}{sin(61)} =\frac{AC}{sin(56)}\\AC=\frac{0.5*sin(56)}{sin(61)} \\AC\approx 0.4739\,\,\,mi[/tex]
which can be rounded to two decimals as:
AC = 0.47mi
For side BC we use:
[tex]\frac{0.5}{sin(61)} =\frac{BC}{sin(63)}\\BC=\frac{0.5*sin(63)}{sin(61)} \\BC\approx 0.509\,\,\,mi[/tex]
which can be rounded to two decimals as:
BC = 0.51 mi
the sum of 26 and twice a number is -46 find the number
Answer:
-72
Step-by-step explanation:
Sum is adding so I just did substitution for this. 26+-72=-46 because a positive plus a negative equals a negative.
What is the x-coordinate of point P on the coordinate grid?
The splitting apart of one cell to form two new cells is called ____
meiosis
fusion
mitosis
mitosis
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell. divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
Answer:
mitosis
Step-by-step explanation:
Graph the image of the figure after a dilation with a scale factor of ½ centered at (4, 8).
Answer:
A(4.5 , 7) B(6.5 , 7) C(6.5 , 4) D(2 , 4)
Step-by-step explanation:
Hope this helps!
4/√8+3
please this little guy wants to disturb me,help, thanks.
Answer:
[tex] \sqrt{2} + 3[/tex]
Step-by-step explanation:
SIMPLIFY the radical expression...
SO IT'S
[tex] \frac{4}{2 \sqrt{2} } + 3[/tex]
Reduce the fraction with 2
Now it's
[tex] \frac{2}{ \sqrt{2} } + 3[/tex]
Rationalize the denominator...
SO IT WILL BE
[tex] \sqrt{2} + 3[/tex]
EASY EXPLANATION...
GAVE ME THE BRAINLIEST IF MY ANSWER WAS HELPFUL...
Sᴋ᭄Sᴀᴍɪʀᴮᴼˢˢ
Karen spent a total of $15.45 on a trip to the movies. She spent $5.00 on a daily bus pass, and $3.95 on movie snacks. How much did she spend on her movie ticket? I NEEE THIS ANSWERD NOW PLEASE AND THANK YOU
Answer:
The answer is 24.4
Step-by-step explanation:
If you add 15.45, 5.00 and 3.95 you get 24.4
Answer:
I think it's 6.50
Step-by-step explanation: 15.45-5.00=10.45-3.95=6.50
What is equivalent to 6/8
Answer:
12/16
Step-by-step explanation:
Answer:
6/8 is equivalent to 12/16
1. Joe uses a jogging trail that runs through a park near his home. The trail is a loop
that is 1 1/2 miles long. On Monday, Joe ran the loop in 1/4 of an hour. What is
Joe's unit rate in miles per hour (miles/hour) for Monday's run?
Answer:
Step-by-step explanation:
Give me a sec to work it out
Find the product 5,917 × 29
Answer: 171593
Step-by-step explanation:
The number of geese at a city park in the year 2015 was 132. The population is declining by 3 geese every two years. The population expressed as a sequence is
Pn=132−3/2n
Find P10. What does this number represent?
Answer:
Step-by-step explanation:
p10 would be 117 geese
132-3/2(10)
132-15
117
The number represents the population after 10 years
mother is m years old,and she is 4 times old as her daughter.How much older is mother then daughter.
Answer:
The mother is 3d older than the daughter
Step-by-step explanation:
Given
Represent the mother's age with m
and
The daughter's age with d
Required
Determine how much older is the mother
First, we need to calculate the mother's age
[tex]m = 4 * d[/tex]
[tex]m = 4d[/tex]
Next, we calculate their age difference
[tex]Age\ Difference = m - d[/tex]
Substitute 4d for m, we have:
[tex]Age\ Difference = 4d - d[/tex]
[tex]Age\ Difference = 3d[/tex]
Hence, the mother is 3d older than the daughter
Find 162.5% of 200
(HURRRY PLEASE)
Answer:
325
have a nice day and can I have brainliest?
Answer:
325.
Step-by-step explanation:
200/x=100/162.5
(200/x)*x=(100/162.5)*x - we multiply both sides of the equation by x
200=0.61538461538462*x - we divide both sides of the equation by (0.61538461538462) to get x
200/0.61538461538462=x
325=x
x=325
Hope this helped
Choose True or False for each statement.
The product of 2.5 and 2.4 is 6.
?
The product of 7.7 and 0.9 is
69.3.
?
The product of 0.07 and 0.9 is
6.3.
?
The product of 0.97 and 2.5 is
2.425.
Answer:
1. True
2. False
3. False
4. True
Step-by-step explanation:
Answer:
1) true, 2.5x2.4=6
2) false, 7.7x0.9=6.93, not 69.3
3) false, 0.07x0.9=0.063
4) true, 0.97x2.5=2.425
If you know that a 30% increase in a quanity is 50, how can you find the original quanity?
Which of these is a geometric sequence?
2,3,5,9,17
Answer:9
Step-by-step explanation:
The graph below represents the price of sending picture messages using the services of a phone company. What is the constant of proportionality?
A graph is shown. The values on the x axis are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The values on the y axis are 0, 22, 44, 66, 88, 110, 132, 154, 176, 198, 220. Points are shown on ordered pairs 0, 0 and 2, 44 and 4, 88 and 6, 132 and 8, 176. These points are connected by a line. The label on the x axis is Picture Messages Sent. The label on the y axis is Price in cents.
A. 10
B. 11
C. 21
D. 22
Answer:
D. 22
Step-by-step explanation:
I took the test
Answer:
d
Step-by-step explanation:
6th grade math I mark as brainliest
Answer:
C
Step-by-step explanation:
Hope this helps :)
which of the following ratios are equivalent to 6:8? (select all that apply)
24:36
9:12
12 to 16
16 to 24
36/40
15/20
Answer:
D and E
Step-by-step explanation:
I have seen the correct answer
The ratio equivalent to 6:8 is 12:16 and 9:12
What is a ratio?The quantitative relation between two amounts showing the number of times one value contains or is contained within the other. for example-"the ratio of computers to students is now 2 to 1"
Given here the ratio 6:8 =3/4
and among the options 9/12=3/4 & 12/16=3/4
Hence, The ratio equivalent to 6:8 is 12:16 and 9:12
Learn more about ratios here:
https://brainly.com/question/13419413
#SPJ2
Which product is negative?
(-3/8)(-5/7)(1/4)
(3/8)(-5/7)(-1/4)
(3/8)(5/7)(1/4)
(-3/8)(-5/7)(-1/4)
Answer:
The third one is the answer
Step-by-step explanation:
hope that helps
(−3/8(−5/7))(−1/4)
= −15/224
Answer:
The third one!
Step-by-step explanation:
There are 30 students in the class. Eleven have blue eyes.
Fifteen have brown hair. Three students have both blue
eyes and brown hair. How many students have neither blue
eyes nor brown hair?
I HAVE A ANSWER BUT DONT KNOW IF ITS RIGHT HELP MEEE!
Please help me with all thank you I’ll mark Brainly please put A. B. C. D next to the answer
Answer:
A. 1.9
B. 3.5
C. 4.2
D. 4.9
I'M KINDA SURE
Step-by-step explanation:
Those images aren't good enough, I can't really get a good look. Basically, if there are nine little lines between each whole number, then each little line represents a tenth of a whole number, or 0.1. If there are four little lines between each whole number, then each little lines is 0.2. So, you just count up from the whole number below the value. For A, start at 1.0 and count up, each little line is 0.1 (if there are nine lines between each whole number), and figure out where A lies. Hope it helped, wish I could give a definite answer.
Martha states that –6 is a rational number. Which is a correct explanation for this statement? The number –6 is the opposite of 6. The number –6 is a negative integer. The number –6 can be written as StartFraction negative 6 over 1 EndFraction. The number –6 is less than 0.
Answer: The number –6 is a negative integer.
Step-by-step explanation:
All integers are rational numbers.
whatsy the answer giving brainliest
Answer:
D
Step-by-step explanation:
You dont know what the number is, so replace that with the variable X. Now, more than is a reversal term and it means to add. So, the equation will be
x + 44
Hope this helps you!! :)
PLs help, what is 2*57*102...
(Im doing experiments with the Brainliest Option)
Answer:
11628
Step-by-step explanation:
Thanks!
4 16/17 as a improper fraction
Answer:
[tex]\frac{84}{17}[/tex]
Step-by-step explanation:
Formula for mixed number to improper fraction: (Whole number × denominator) + numerator4 × 17 = 68, 68 + 16 = 84Re-write the fraction: [tex]\frac{84}{17}[/tex]I hope this helps!