Answer:
0.36
Step-by-step explanation:
Given that:
Mean = 70
Standard deviation = 5.5
score (x) = 72
Formular for obtaining Standardized score (Zscore) :
Zscore = [score (x) - mean] / standard deviation
Hence,
Zscore = (72 - 70) / 5.5
Zscore = 2/ 5.5
= 0.3636363
Zscore = 0.36 ( 2 decimal place)
Answer:
-1.67
Step-by-step explanation:
khan academy
PLS HELP FIRST TO ANSWER GETS BRAINIEST
Max is thinking of a new password for his laptop. He wants to use the numbers 1, 4, 7 and 9. How many passwords could he make, using each number only once in the password?
Answer:
24
Step-by-step explanation:
I found out that each one can have 6 possibilities with out moving so I did 6 times 4 and got 24
Answer:
You can get 12 no problem:)
Step-by-step explanation:
since cursed orb is 1 out of 750 and spawns every 10 minutes
and the old spawn was 1 out of 85000 and spawna every 7 seconds
which is rarer?
the old spawn
or the new one
and by how much
Dahlia mandujano uses 250 meters of fabric to create 16 purses.At this rate how many meters far fabric are needed to make one purse?
Answer:
The answer is 16.625
Step-by-step explanation:
We need to divide 250 by 16 to know how much fabric is used to make 1 purse
(I do not know if this is correct, It's almost 2 am so I am very tired)
Apply the distributive property to factor out the greatest common factor. 90+27= equals
Answer:
1.
90+27
2.
90 = 9 x 10
3.
27 = 9 x 3
4.
So apply the distributive property would be:
90 + 27 = 9(10 + 3)
Step-by-step explanation:
Answer:
The greatest common factor of 90 and 27 is 9.
Using the distributive property , you could write: 9(10 + 3)
Some people have been complaining that the children's playground at a municipal part is too small and is in need of repair. Managers iof the pard decide to survey city residents to see if they believe the playground should be rebuild. They hand out questionnaires to parents who bring children to the park and asked: "Do you think the playground should be repaired and expanded even if that means raising the entrance fee to the park?" Which type of bias is most likely to have occurred in this situation?
a
Voluntary Bias
b
Wording Bias
c
Response Bias
d
Non-Response Bias
Answer:
c . Response Bias
Step-by-step explanation:
This is a convenience sampling and it could lead us to a response bias. Those parents who bring their children to play in the park would most likely to support rebuilding the park while the parents those who do not bring their children would not be sampled and thus would not be included in the sampling. This sample method involved is not representative of the entire population. So it is a responsive bias.
The mayor of a town believes that over 47G% of the residents favor construction of an adjoining community. Is there sufficient evidence at the 0.050.05 level to support the mayor's claim
Answer:
There is sufficient evidence at the 0.05 level
Null hypothesis ; H0 : p = 0.47
Alternative hypothesis : H1 : p ≠ 0.47
Step-by-step explanation:
percentage favoring construction of adjoining community = 47%
level = 0.05
To determine if the 0.05 confidence level is enough to support the major's claim we have to state the Null and alternative hypothesis
Null hypothesis ; H0 : p = 0.47
Alternative hypothesis : H1 : p ≠ 0.47
Find the area of a triangle with base 18 inches and height 11 inches.
Provide your answer bolor
Answer:
198
Step-by-step explanation:
18 x 11 = 198
00:00
What number completes the ratio table?
2
7
12
17
16
96
136
O A. 21
B.
23
O C. 32
the answer is 56
Answer: 56
Step-by-step explanation:
Because u multiply
Answer:
its 56
Step-by-step explanation:
Fill in the missing numbers to complete the pattern:
5.7, 6.2, 6.7,_____, ______, 8.2
find the value of x
Answer:
B. x = 30/13
Step-by-step explanation:
2.5/6.5 = x/6
Cross multiply: 6.5x = 15
Simplify: 6.5x/6.5 = 15/6.5
x = 30/13
What's 4/15 divided by 5 in simplest form
Answer:
4/75
Step-by-step explanation:
HELPPPP ME PLEASE ITS THE LAST QUESTION
Answer:
first one 5/8
Step-by-step explanation:
2 1/2 / 4 = 5/8
HELP IMA MARKING BRAINIEST
Malcolm is working full-time and wants to make sure he's saving strategically for four specific goals: an emergency fund ($5000), a flight home to see his parents for the holidays ($450), a downpayment on a new car ($3000), and his retirement (2% of his monthly take-home pay). What's his best strategy?
1
Answer: c. Set up 3 separate savings accounts for the first 3 goals and a retirement investment for the 4th
Step-by-step explanation:
The options are:
a. Put as much as he can every month into an investment, like shares of a company, so his money grows quickly
b. Keep all the money in his checking account so that he can spend it in the different categories as needed
c. Set up 3 separate savings accounts for the first 3 goals and a retirement investment for the 4th
d. Set up 4 separate savings accounts
Based on the information given in the question, the best startegy for Malcolm is to set up 3 separate savings accounts for the first 3 goals and a retirement investment for the 4th.
Since the first three goals include saving for an emergency fund ($5000), saving for a flight home to see his parents for the holidays ($450), and a downpayment on a new car ($3000), the best thing he should do is to set up 3 savings account for the first three goals.
The last goal relates to his retirement which is 2% of his monthly take-home pay, therefore he should set up a retirement investment for the 4th goal.
Find the greatest number that will divide 153 ,204 and 357 without leaving any remainder.
Answer:
51.
Step-by-step explanation:
Finding the prime factors:
153 = 3 * 3 * 17
204 = 2 * 2 * 3 * 17
357 = 3 * 7 * 17
3 * 17 is common to all three sets of factors.
So the greatest common factor (GCF) = 3*17 = 51.
Factor: 5x2 – 15x – 20.
(a) 5(x-4)(x+1),
(b) -2(x-4)(x+5),
(c) -5(x+4)(x-1),
(d) 5(x+4)(x+1).
Answer:
A
Step-by-step explanation:
please help me I rlly need help
Answer:
option 4 it's the answer
it's it because u go down once because of the -1 and for the fraction u go up 2 and over 5
if the point (2-3) lies on the graph of the equation 2y=ax-7 then find the value of a
Answer:
a = 1/2
Step-by-step explanation:
The given equation is :
2y=ax-7 ...(1)
The point (2,-3) lies on the graph of this equation.
We need to find the value of a.
Put x = 2 and y = -3 in equation (1)
2(-3) = a(2) -7
-6 = 2a-7
-6+7 = 2a
2a = 1
a = 1/2
Hence, the value of a is 1/2.
Emily is taking her driving test. As she answers each question, the progress bar at the bottom of the
screen shows what part of the test she has finished. She has just completed question 3 and the
progress bar says she is 25% complete. How many total questions are on the test?
Answer
Gracie and her friends went out for pizza on Friday. The total bill for food and drinks came to $23.
a) How much would leave for a 20% tip?
b) How much is the total cost for the dinner?
Answer:
There should be 12 questions
Step-by-step explanation:
Mental Math
Find the measure of b. PLEASE HELP
g what is the 95% confidence interval a researcher wishes to compare the average amount of time spent in extracurricular
Complete question is;
A researcher wished to compare the average amount of time spent in extracurricular activities by high school students in a suburban school district with that in a school district of a large city. The researcher obtained a simple random sample of 60 high school students in a large suburban school district and found the mean time spent in extracurricular activities per week to be six hours with a standard deviation of three hours. The researcher also obtained an independent simple random sample of 40 high school students in a large city school district and found the mean time spent in extracurricular activities per week to be four hours with a standard deviation of two hours. Let x¯1 and x¯2 represent the mean amount of time spent in extracurricular activities per week by the populations of all high school students in the suburban and city school districts, respectively. Assume two-sample t procedures are safe to use?
what is the 95% confidence interval a researcher wishes to compare the average amount of time spent in extracurricular?
Answer:
CI = (0.755, 3.245)
Step-by-step explanation:
For SRS of 60;
Mean: x1¯ = 6
Standard deviation: s1 = 3
For SRS of 40;
Mean: x2¯ = 4
Standard deviation; s2 = 2
Critical value for the confidence interval of 95% is: t = 1.96
Formula for the CI is;
CI = (x¯1 - x¯2) ± t√[(s1²/n1) + ((s2)²/n1)]
Plugging in the relevant values, we have:
CI = (6 - 4) ± 1.96√[(3²/60) + ((4)²/40)]
CI = 2 ± 1.96√[(3²/60) + ((4)²/40)]
CI = 2 ± 1.96√0.55
CI = 2 ± 1.245
CI = [(2 - 1.245), (2 + 1.245)]
CI = (0.755, 3.245)
What is 11/20 as a decimail please help
Answer:
[tex] \frac{11}{20} = 0.55[/tex]
6 1/2 cups divided by 3/4 as a fraction
Answer:
Fraction: 26/3
Decimal: 8.6
Mixed Number: 8 2/3
Step-by-step explanation:
Hope this helps! Please mark as brainliest.
Thanks!
pens answer I need help ill give brainiest .what Is the value of y
Answer:
y = 29
Step-by-step explanation:
4y - 8 = 79 + y
- y - y
3y - 8 = 79
+ 8 + 8
3y = 87
/ 3 / 3
y = 29
A leaky pool loses 2 and one-fourth inches of water each day. Jermaine and Mildred are asked to determine the change in the amount of water in the pool over 5 days.
Jermaine’s Solution
Mildred’s Solution
5 (Negative 2 and one-fourth) = 5 (negative 2 minus one-fourth) = negative 10 minus one-fourth = negative 10 and one-fourth
5 (Negative 2 and one-fourth) = 5 (negative 2 minus one-fourth) = negative 10 minus StartFraction 5 over 4 EndFraction = negative 11 and one-fourth
Which describes the reasoning used to determine whose solution is correct?
Answer:
D - Mildred is correct because she distributed 5 correctly.
Step-by-step explanation:
Hope you get a good grade :) \(￣︶￣*\))
Answer:
d
Step-by-step explanation:
Is (0, -1) a solution of -101 + 4y > -4?
Answer:
yes
Step-by-step explanation:
please help
Solve the system:
-5x+6y=55
4x+3y=34
Write down your solution.
Answer:
(1, 10)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
-5x + 6y = 55
4x + 3y = 34
Step 2: Rewrite Systems
4x + 3y = 34
Multiply everything by -2: -8x - 6y = -68Step 3: Redefine Systems
-5x + 6y = 55
-8x - 6y = -68
Step 4: Solve for x
Elimination
Combine equations: -13x = -13Divide -13 on both sides: x = 1Step 5: Solve for y
Define equation: 4x + 3y = 34Substitute in x: 4(1) + 3y = 34Multiply: 4 + 3y = 34Isolate y term: 3y = 30Isolate y: y = 10write 0.000000591 in scientific notation
Answer:
5.91 x 10−7
Step-by-step explanation:
PLS HELL WILL GIVE BRAINLIEST PLS HELP ALSO ANSWER CORRECTLY PLS
The two figures have a scale of 3.1. What is the length of the corresponding side in the second figure?
A)
5
B)
15
C)
30
D)
45
Answer:
5 is the only one that makes sense
