Answer:
D obtuse *********************
If f(x) = 7x +3 and g(x) = (x-4,
what is (fºg)(40)?
Answer: 280x^2 - 1000x - 480
Step-by-step explanation:
((7x + 3) * (x - 4))(40)
use foil
7x^2 - 28x + 3x -12
(7x^2 - 25x - 12) (40)
280x^2 - 1000x - 480
Module 15 - Homework Practice-
Personal Math Trainer
21 22 23
Find the width of a cereal box that has a volume of 5,950 cm and is 25 cm long and 34 cm high.
cm.
The width of the cereal box is
Maria walks a round-trip of 0.75 mile to school every day. How many miles will she walk
in 4.5 days?
A 0.3375 mile
B 3.375 miles
C 33.75 miles
D 337.5 miles
Zaria bought a $75.00 gift for a friend over the internet. When she received her credit card statement she found out that the company had added $9.75 for shipping and handling. What was the shipping and handling charge as a percent of the original cost of the gift?
Answer:
13%
Step-by-step explanation:
75.00 x 13% = 9.75
A circle containing the point (6, 1) has its center at (3, 5). Complete the description of the changes in the circumference and the area of the circle if the radius is multiplied by 2. Enter circumference and area in terms of π.
The radius of the original circle is __
. The circumference is doubled to units.__ The area is quadrupled to __ square units.
Answer
what’s the answer someone help
Step-by-step explanation:
Please do these and also let me know how you got the answer (please leave full work for me, need this asap)
A chemist examines 25 geological samples for bromide concentration. The mean bromide concentration for the sample data is 0.502 cc/cubic meter with a standard deviation of 0.0313. Determine the 98% confidence interval for the population mean bromide concentration. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Answer:
The critical value that should be used is T = 2.492.
The 98% confidence interval for the population mean bromide concentration is between 0.486 cc/m³ and 0.518 cc/m³
Step-by-step explanation:
We have the standard deviation for the mean, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 25 - 1 = 24
98% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 24 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.98}{2} = 0.99[/tex]. So we have T = 2.492, which is the critical value that should be used.
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.492\frac{0.0313}{\sqrt{25}} = 0.016[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 0.502 - 0.016 = 0.486 cc/m³
The upper end of the interval is the sample mean added to M. So it is 0.502 + 0.016 = 0.518 cc/m³
The 98% confidence interval for the population mean bromide concentration is between 0.486 cc/m³ and 0.518 cc/m³
Hi can someone please answet this question for me im a bit confused
Answer:
a)
Step-by-step explanation:
for each point (A, B, C) reduce the 'x-value' by two and reduce the 'y-value' by 7
for example, for point A:
to find A': (-6, -7) would be (-6-2, -7-7) which is (-8, -14)
PLEASE ASAP THIS IS 7TH GRADE MATH SO ITS EASY
the cost of pre-sale ticket for the dance is $3.00 The tickets at the door will cost $5.00. What is the percent increase of the ticked from pre-sale to at the door price?
Answer:
66.666%
Step-by-step explanation:
Ok first of all the first ticket is $3.00 the second one is 5.00. Important to note that the difference is $2.00. So we do $2.00/$3.00 which gives the answer of 66.666(recurring). Therefore your answer is 66.666%
Someone please help me with this question I’m stuck on it
Answer:
Option 2
Step-by-step explanation:
All you need to know is that you are going to try to make that Algebraic Expression make since so that (x) is greater than (-3) negative-three. Also Option two is correct because you can put it as (1.6x+2x) ≥ -3. :)
The sum of two numbers, one of which is two-
thirds of the other, is 45. Find the smaller number.
Which table has a constant of proportionality between y and of 4?
Choose 1 answer:
Answer:
A, because with all of the X values they can be multiplied to get to the y value.
please help it due today ?
A house worth £80,000 in January 2012 is set to decrease in value by 7% per year.
What will the value of the house be in January 2015?
23. According to one of Tolkien's essays, there were 144 elves originally created by the gods in Middle-Earth. If their numbers tripled every century after that, how many elves were there 1000 years after the creation of Middle-Earth?
A) 432,000 elves
B) 59,049,000 elves
C) 432 elves
D) 8,503,056 elves
Answer:
D
Step-by-step explanation:
elves in 1000 years = elves now x (rate of increase)^time
elves increase every century. there are ten years in a century. thus time = 1000/100 = 10 years
144 x (3)^10 = 8,503,056 elves
If is a segment bisector of and AB = 17, find AP.
Question 1 options:
A)
34
B)
8.5
C)
68
D)
17
Answer:
B. 8.5
Step-by-step explanation:
It's a segment bisector which means the other line bisects the direct middle of AB. 17/2 is 8.5, meaning that AP should be 8.5
9 Which statement is true? A 0.04 < 0.004 B 8.2 < 8.02 с 7.6 < 7.67 D 0.03 < 0.003
Answer:
C. 7.6<7.67
Step-by-step explanation:
a) 0.04>0.004 is right.
b) 8.2>8.02 is right.
c) 7.6<7.67 is right
d) 0.03>0.003 is right.
What percent of the circle below is shaded?
A 25%
B 50%
C 75%
Answer:
C
Step-by-step explanation:
The percentage of the shaded region of the circle is 75%.
Option C is the correct answer.
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
The circle can be in 4 parts.
Three parts are shaded.
Now,
The percent of the shaded region.
= (Shaded parts / Total parts) x 100
= 3/4 x 100
= 75%
Thus,
75% is shaded.
Learn more about percentages here:
https://brainly.com/question/11403063
#SPJ2
need help quick find the value of x in the triangle shown below
Answer:
The value of x is B root 58
which expression is the same as multiply 3 and 2 add 5 to the product then multiply by 10?
Answer:
3 x 2 = 6 + 5 = 11 x 10 = 110
Answer:2435
Step-by-step explanation:your ervomd
10:28
now
MESSAGES
sidneys
I'm so excited to see where my business goes
A cereal company is putting 1 of 3 prizes
in each box of cereal. The prizes are
evenly distributed so the probability of
winning any given prize is always 1/3.
Adam wonders how many boxes he
should expect to buy to get all 3 prizes.
He carried out 32 trials of a simulation and
his results are shown below. Each dot
represents how many boxes it took to get
all 3 prizes in that trial.
3 4 5 6 7 8 9 10 11 12 13
# of boxes purchased
Use his results to estimate the
probability that it takes 9 or more
havas to not all ?
I don’t get what your trying to ask.....
Let a = the length of a car in meters. Let b = the length of the same car in centimeters. Which number is greater, a or b? Use the drop-down menu to select your answer. a is the greater number.
Answer:
B is the greater number
Find the area of the parallelogram.
3 km
4.8 km
The area of the parallelogram is ___ square kilometers.
Answer:
14.4 km²
Step-by-step explanation:
A=b
h=4.8·3
≈14.4
please help i will give brainlest to the first one who answers
Answer:
The answer is x+9.
I hope you like my answer.
A university has 29,010 students. In a random sample of 210 students, 14 speak three or more languages. Predict the number of students at the university who speak three or more languages.
The expected number of students at the university who speak three or more languages is_______.
Answer:
1,934 students
Step-by-step explanation:
Find the percentage using the sample size and multiply that by the total number of students
Solve for x
F. x= 40°
G. x= 62.5°
H. x= 83.3°
J. x= 53.3°
Answer:
[tex]x + 5 + 2x - 55 = 3x - 50 = 70 \\ 3x = 120 \\ x = 40[/tex]
help me with this question
Answer:
A
Step-by-step explanation:
The opposite of 6 IS -6
please please i need help
Answer:
The gift card will have $7.29 left
Step-by-step explanation:
pls help bro plsssssssssssss
Answer:
3) 5x + 19
4) 7f + 7
5) 4m^2+4n+15
6) 9u + 5w + 10
Find all the values of × for which the statement is true.
[tex] | {x}^{2} + 9| = {x}^{2} + 9[/tex]