Answer:
90k
Step-by-step explanation:
10% of 100k leaves 90%
so 90% of 100k = 0.9(100k) = 90k
Answer:
90kg
Step-by-step explanation:
Decreasing 10% of anything is just 1 - 0.1 times it. 1 - 0.1 is equal to 0.9, so decreasing 10% of anything is just multiplying it by 0.9. 100kg multiplied by 0.9 is 90 kg.
Use for Questions 11-15
A survey was performed and data was collected of students preference of courses based on gender.
Prefers
Math
Prefers
English
Prefers
Science
Totals
Male
21
39
60
120
Female
135
AS
70
180
Totals
156
84
130
300
2 points
11. Of the male students surveyed, how many prefer science? (just the
number, not percent) *
60
12. What percent of students surveyeb prefer Math? -
2 points
Your answer
This is a required question
13. Of all students surveyed, what percent are females who prefer English? 2 points
Step-by-step explanation:
12. 136/300
=52%
13.45/300
=15%
Combine all like terms to simplify the expression.
12x +5-4x+2x2
a.) 8x2 +5
b.) 10x +5
c.) 2x2 + 8x +5
d.) 17 - 4x
12x + 5 - 4x + 2x² =
= 2x² + 12x - 4x + 5 = 2x² + 8x + 5
Choose the correct simplification of (4x − 3)(3x² − 4x − 3).
Answer: 12x^3−25x^2+9
^ are the exponents
Step-by-step explanation:
i think the answer is 3x^2-x
Simplify: (x1/2y3)6
A) x12y18
B) x12y9
C) x3y18
D) x3y9
The new TCL LED TV at Best Buy is regularly $299.
a) You have a 25% coupon. What is the sale price after the discount? $
b) What is the total purchase price if sales tax is 8.5%? $
Answer:
1) 224.25
2) 243.31
Step-by-step explanation:
Find the value of x.
143
2x° 152
116°
to
1259
140°
139°
Answer:85 degrees
Step-by-step explanation:
Formula for sum of interior angles is (n-2)180. Since there are 7 sides, n-2 is 5.
5 x 180 = 900
Add all the angles given and subtract sum from 900 and you are left with 85 for the missing angle.
A researcher plans to conduct a test of hypotheses at the 1% significance level. She designs her study to have a power of 0.90 at a particular alternative value of the parameter of interest. What is the probability that the researcher will commit a Type II error for the particular alternative value of the parameter at which she computed the power
Answer:
P(Type II error) = 0.1
Step-by-step explanation:
In statistics, the formula for power of a hypothesis is given by;
Power = 1 - P(Type II error)
Where P(Type II error) is the probability of making a Type II error.
We are told that the power is 0.9.
Thus;
0.9 = 1 - P(Type II error)
Making P(Type II error) the subject gives;
P(Type II error) = 1 - 0.9
P(Type II error) = 0.1
Mr.Green took a poll of 80 students to find out how they get to school.How many students in total ride the bus to school? 8 students,12 students,24 students,or 32 students?
Answer:
This problem needs more information.
Step-by-step explanation:
given that f(x)=x^2+5x-5, find f(2)
Answer:
9
Step-by-step explanation:
for this problem, plug in 2 for every x
2^2 + 5(2) -5
4 + 10 -5= 9
Answer:
9
Step-by-step explanation:
plug 2 in whenever you see the x
You start driving north for 16 miles, turn right, and drive east for another 30 miles. At
the end of driving, what is your straight line distance from your starting point?
Answer: The distance between starting and ending point is 34 miles.
2) Heather received a 32% discount on a
$34 shirt. After the 7% sales tax was added.
how much did she pay for the shirt?
A) $24.74
B) $22.60
C) $23.12
D) $21.50
Answer:
a
Step-by-step explanation:
34 x .32=10.88
34-10.88=23.12
sale price was 23.12
1.61 in tax
23.12+1.61(rounded to 162)
24.74
3x -3 = 2x
If you do this PLEASE could I have a THOROUGH explanation on how to do it!
Answer:
3x-3=2x, x=3
Step-by-step explanation:
so you want to move all the numbers with x to the left side of the equation
subtract 2x from both sides of the problem
3x-3-2x=0
subtract 2x from 3x
then add 3 to both sides of the equation
x=3
ohn works Monday to Friday. He buys his lunch on his way to work. Each day John buys a sandwich, a bottle of water and a bag of crisps. John thinks he will save more than £7.50 a week if he buys his lunch each day from shop B instead of shop A. Is John correct? You must show your working.. Single line text.
(4 Points)

Answer:
papta nahi osa kuch kahta Bahar Holi to
I always get lost what is 1-1=. Is it 0 or 1.??????
Answer:
1-1=0 haha
Step-by-step explanation:
if you have one ball and then take away one ball, you will have zero balls
20% of 400 is what number
Please help ASAP I have no idea
Answer:
73.4
Step-by-step explanation:
I’m 96% sure this is the answer
1. 5, 10, 15, 20.....
a. Rule:
b. Next three:
2. 1.3, 1.5, 1.7, 1.9....
a. Rule
b. Next Three
Answer:
1. a) rule is that it adds 5 every time
1.b) 25, 30, 35
2.a) rule is that it adds 0.2 every time
2.b) 2.1, 2.3, 2.5
Solve each equation by taking square roots NEED THIS ASAP WILL GIVE BRAINLIEST
Answer:
#3. n = 1#5. x = 2Step-by-step explanation:
#3.
n x n - 5 = -4
n x n = 5 + -4
n x n = 1
n = 1
#5.
7x^2 + 1 = 29
7x^2 = 29 - 1
7x^2 = 28
x^2 = 28 / 7
x^2 = 4
x = 2
Hope that helps!
Charlie wants to buy a new bike. The bike costs $125 and he has a coupon for a 20% discount. How much money will he get to save with the discount?
Answer:
He will get to save 25 dollars.
Step-by-step explanation:
percentage formula:
($125×20) ÷ 100
(2500) ÷ 100
= 25
Answer:25
Step-by-step explanation: because you divide 11by20 hthen you add in th ermaneder
the trip took 1 hour and 40 minutes 30% of the time the car traveled on rough roads how much time did the car travel on rough roads?
A. 70 min B. 45 min C. 40 min D. 30 min
40.39 is what percent of 65?
A.60% B. 0.6% C. 39% D. 65%
Please help I need it now this is due ate 6:00 am please
Answer:
D
NOTE: 1 HOUR IS 60 MINUTES
do 60+40 gives u the minute which is 100
then 100 x30% = 30
NOTE: for the second round up the digit and multiply it by 65
so 40.4 x 65 gives 62. something
the nearest number is 60 % so 60% is the answer
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
Answer:
D
NOTE: 1 HOUR IS 60 MINUTES
do 60+40 gives u the minute which is 100
then 100 x30% = 30
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
*HELP QUICKLY PLEASE.*
which of the following is correct? grandson needs help.
according to his teacher this needs to be done within the hour.
A company gives a starting salary of $50,000 and to increase the salary by
4% annually. What will be this salary after 3 years?
Answer:
$56243.20
Step-by-step explanation:
the equation would be 50000(1+4%)^3. Solve for that and get your answer.
Hii, Ok so basically I really need help with these questions they are really difficult and don't worry rewards are plenty a come. On the last question whoever give the right answer and is the quickest will get brainliest. But do not worry whoever answers this question will get a
1. Thank you *heart*
2. 5 star rating
3. Comment
So you may be wondering what the question is well take a look oh and by the way please do not give a random answer and its a maths question
Given that angle A = 284 degrees, work out x
Suppose 10 percent of households earn over 80.000 dollars a year, and 0.25 percent of households earn over 450,000. A random sample of 400 households has been chosen. In this sample, let X be the number of households that earn over 80,000, and let Y be the number of households that earn over 450,000. Use normal and Poisson approximation, whichever is appropriate in either case, to find the simplest estimates you can for the probabilities P(X 48) and P(Y 2).
Answer:
0.1056
0.2642
Step-by-step explanation:
N = 400
P = 10%
n*p = 400*0.1 = 40
n(1-p) = 400 * 0.9 = 360
40 and 360 are greater than 5 so we use the normal distribution here to estimate further.
mean = n*p = 40
sd = [tex]\sqrt{np(1-p)}[/tex]
[tex]\sqrt{400*0.1(1-0.1)} \\= \sqrt{40(0.9)} \\= \sqrt{36} \\= 6[/tex]
p(X≥48)
= p(X≥47.5)
[tex]=P(Z<\frac{47.5-40}{6} )\\= P(Z<1.25)[/tex]
= 0.8944
1 - 0.8944
= 0.1056
FOR Y
N = 400 p = 0.25% = 0.0025
400 * 0.0025 = 1
1 is less than 5 so we use poisson distribution.
using the excel function,
1 - BINOMDIST(1, 400, 0.0025, TRUE)
= 1 - 0.735759074
= 0.2642
What type of study is described? (NOT A MULTIPLE CHOICE)
a. Managers of a forest preserve want to know what percent of the visitors with dogs keep their dogs on a leash. The park assigns an employee to count the numbers of visitors that do and do not use a leash.
b. A local newspaper polls citizens of a city about whether they support a local tax levy?
Answers:
a) Observational Studyb) Survey===========================================================
Explanation:
Part (a)
We have an observational study because the park ranger is observing the people coming and going, as to whether they leash their dog or not. The people being counted are not asked to fill out a form or survey, so that's why we aren't conducting a survey here.
Ideally, the park ranger should somehow make a visual note of each person so they do not count that person more than once. For example, let's say we had 500 people go through the park. Of that 500, the true number of people who leash their dogs is 20. I don't know what the true percentage is, but let's just go with this hypothetical situation. If those 20 people pass back and forth where this manager is taking note, then he might overcount some individuals and inflate that 20 to say 40 or 60, or perhaps even 100. This is if the ranger doesn't look at the individuals closely and simply marks a tally for "leash" vs "no leash". So that's why there needs to be some quick method to distinguish between any unique guest of the park.
--------------------------------
Part (b)
In contrast to part (a), we have a survey here this time. Each person is asked directly about a specific narrow well defined question. The newspaper reporter isn't going out into the field to simply watch or listen to people discuss about taxes, so that's why we don't have an observational study going on. The reporter should try to keep the question as bias-free as possible. Also, they need to ensure that the sample is representative of the population.
In neither part (a) nor part (b) is an experiment being done. An experiment requires two groups: a treatment group and control group. Also, the researcher would directly affect the treatment group to somehow change one specific aspect, while keeping the control group the same (though possibly giving a placebo of some kind). For each of these, the researcher is simply trying to stay out of the picture as much as possible while gathering the external data.
Casey paod $32 for a book that was on sale at 20% off. WHat was the original prize for that book
Answer:
$38.4
Step-by-step explanation:
20%=0.20
32*0.20=6.4
32+6.4=38.4
Question
14.
A football field is 160 ft wide. Convert the width to yards. Write your answer as a mixed number.
Answer:
53 1/3 yards
Step-by-step explanation:
For every 3 ft, there is a total of 1 yard. Using this conversion, we can divide the 160 ft by 3 to get our answer in yards.
160 ft / 3 = 53 1/2
please help , thank youu
Answer:
9.) would be 89 and 10.) would be 1500 ft
Answer:
A. 89 B. 1200 ft
Step-by-step explanation:
A.
5(-4²)+9
5(16)+9
80+9
89
B.
-150+1350=
1200
1/3 of 4 feet=___inches
Plz help m confused ♀️
Answer: 16in
4 feet= x inches
4*12= 48
48/3= 16
1/3 of 4 feet is 16in
Answer:
16 inches
Step-by-step explanation:
(1 / 3) * (4 feet)
What is the answer to -12(1 3/4)
Someone please help
Answer:
21
Step-by-step explanation: