Answer:
Step-by-step explanation:
plug in 7
f(x)=3(7)+2
multiply 3 and 7 which is 21
and 2
f(x)=23.
What is the least commons denominator of 5/12 and 1/4
Mr. Lopez and Ms. Spence both went on separate road
trips this summer. Ms. Spence drove 873 total miles and
Mr. Lopez drove 77 more miles than Ms. Spence. How
many miles did Mr. Lopez drive on his road trip?
Answer:
950 miles
the problem states that Mr. Lopez drove 77 more miles so just add 873+77 to get 950 miles
raise 4 to the 7th power, then divide the result by p
The set up equation is [tex]\frac{4^7}{p}[/tex]
4 raised to the power of 7 is [tex]4^7[/tex]
The result is divided by p, so divide [tex]4^7[/tex] by [tex]p[/tex]
What can teachers do to alleviate statistics anxiety in their students? To explore this question, statistics anxiety for students in two classes was compared. In one class, the instructor lectured in a formal manner, including dressing formally. In the other, the instructor was less formal, dressed informally, was more personal, used humor, and called on students by their first names. Anxiety was measured using a questionnaire. Higher scores indicate a greater level of anxiety. The mean anxiety score for students in the formal lecture class was 25.40 . In the informal class, the mean was 20.41 . Classify 25.40 and 20.41 as parameters or statistics.
Answer: Statistic
Step-by-step explanation: The difference between a parameter and statistic lies in the set of observation from which either quantity is derived. The parameter represents numerical values which are derived by examining or considering an entire population while the statistic is used to define numerical quantities derived from subset of the population called the sample. In the scenario described above, the population of interest would be the entire population of student and hence statistical derivations made would be called parameters. However, the scenario only experimented using student from two different classes which is a subset of the entire population of student. Hence, the obtained mean values of 25.40 and 20.41 for students in the formal and informal classes are categorized as statistic.
Inflation causes things to cost more, and for our money to buy less. Suppose inflation decreases the value of money by 1.1% each
year.
How much will $ 200 buy you in 14 years?
PLEASE HELP!!!
Answer: $171.31
Step-by-step explanation:
A = P(1 - r)ⁿ
Given: P = 200, r = 1.1% (.011), n = 14
A = 200(1 - .011)¹⁴
= 200(.989)¹⁴
= 171.308
Since we are talking about money, round to two decimal places.
At the end of the night, Mrs. Johnson works with the student council to determine their profit on the fundraiser. The least popular item was chips, in which they sold only 21 bags. The chips cost a total of $48.10. Were the chips profitable? Explain your reasoning.
(Each chip bag cost $1.75)
Answer:
If they were the least profitable item then from basic logic I would say no they are not. I'm sorry I have come across a dead-end here. Hope this helps.
Step-by-step explanation:
-4 - 3= Please help if you know the answer please explane??
Answer:
-7
Step-by-step explanation:
there is nothing to explain but anyways
-4 - 3 = -7
What graph shows a rate of $7.50 per hour
Answer:
we can't see the graph
Step-by-step explanation:
gdhdhd
Andres works 20 hours per week at a part-time job. His original pay rate was $10.00 per hour, but he recently received a pay raise of x dollars per hour. His new total weekly pay, y, is represented by the equation y=20(10+x).
If Andres earned $210 last week, what was the amount of Andres' raise per hour?
Answer:
X = .5
Step-by-step explanation:
10 × 20 = 200
10.5 × 20 = 210
Explanation:
Y = 210
210 = 20(10+X)
divide both sides by 20
10.5 = 10+X
subtract 10 from both sides
.5 = X
X = .5
21 lbs of potatoes cost $231. How much would 28 lbs cost?
Answer:
$308
Step-by-step explanation:
First, you have to find out how much it costs per pound, so you would divide 231 by 21. each pound of potatoes costs $11. so 11 x 28 would make it $308.
Answer:
$308
Step-by-step explanation:
$231/ 21lbs= $11 per pound
so, $11 x 28lbs = $308
evaluate the function below given f(2) f(x)=3x-10
Answer:
f(2) = -4
Step-by-step explanation:
for f(2), plug it into f(x)=3x-10
3(2)-10
6-10
-4
f(2) = -4
Whoever gets this right i will put them as brainliest?
Answer:
Is it c?
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
-2 - 6 equals -8.
PLZ MARK BRAINLIST AND RATE THIS
A regular hexagon inscribed in a circle creates 6
equiangular triangles. If the radius of the circle is 10
inches, how far are points at A and B from the y-axis?
Answer: answer is A
Step-by-step explanation:
Edge 2020
Your question: A regular hexagon inscribed in a circle creates 6 equiangular triangles. If the radius of the circle is 10 inches, how far are points at A and B from the y-axis?
The correct answer would be They are both 5 inches from the y-axis
Which one of these are polygons?
Answer:
f
Step-by-step explanation:
Answer: A, C (and F depending on the class)
Step-by-step explanation:
A polygon is a 2D shape with straight sides, with no curvature. B and E are curved, and D isn’t closed off. Depending on the class, the answer would also be F, but since it’s 3D, it’s a polyhedron.
subtract 7 9/16 - 4 2/4
Answer:
3.0625 or 3 1/16
Step-by-step explanation:
So first Im just gonna subtract 7 - 4. (3)
So we multiply 9 by 4, and get 36.
Then we multiply 2 by 16, and get 32.
Next we give both terms new denominators -- 16 × 4 = 64.
Which yknow = 36/64 and 32/64.
Since our denominators match, we can subtract the numerators.
36 − 32 = 4 So it is 4/64..
Now we want to simplify so we divided by 2.
2/32 and 1/16
And we cant simplify It anymore because 2 is larger than 1.
So its 1/16th!! :D
Construct a truth table for the statement ~( p v ~q)
pq Truth Table
Hello
T for True
F for False
[tex]\left|\begin{array}{c|c|c|c|c}p&q&\~q&pv\~q&\~(pv\~q)\\---&---&---&---&---\\T&T&F&T&F\\T&F&T&T&F\\F&T&F&F&T\\F&F&T&T&F\\\end{array}\right|[/tex]
thanks
Select all the parallelograms that have an area of 16 square units
Answer:it's c and b
Step-by-step explanation:
It's c an b
Help Meeeeee!!!!!
Find the inverse of f(n) = -n - 3
Answer: f^-1(n)= -n-3
Answer:
f − 1 ( n) = − n − 3
From:iOE your friend:D :) *Be awesome be you*Consider the figure below to complete the statement.
Answer:
28
Step-by-step explanation:
yall are so wrong its most def 28
Under what circumstances does the inequality hold? Why?
[tex]|A{\cdotp}B|=|A||B|[/tex] (A and B are verctors).
[tex]\huge\bold\red{Answer:-}[/tex]
ʀᴇꜰᴇʀ ᴛᴏ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛꜱ.ɪ ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘꜱ❤Military radar and missile detection systems are designed to warn a country of an enemy attack. A reliability question is whether a detection system will be able to identify an attack and issue a warning. Assume that a particular detection system has a probability of detecting a missile attack. Use the binomial probability distribution to answer the following questions. a. What is the probability that a single detection system will detect an attack? (to 2 decimals) b. If two detection systems are installed in the same area and operate independently, what is the probability that at least one of the systems will detect the attack? (to 4 decimals) c. If three systems are installed, what is the probability that at least one of the systems will detect the attack? (to 4 decimals) d. Would you recommend that multiple detection systems be used? - Select your answer -
Answer:
(a) 0.90
(b) 0.99
(c) 0.999
(d) Yes
Step-by-step explanation:
A particular detection system has a 0.90 probability of detecting a missile attack.
Let X = number of detection system that detects a missile attack.
The random variable X follows a Binomial distribution with probability of success as, p = 0.90.
(a)
Compute the probability that a single detection system will detect an attack as follows:
[tex]P(X=1)={1\choose 1}(0.90)^{1}(1-0.90)^{1-1}\\=1\times 0.90\times 1\\=0.90[/tex]
(b)
Compute the probability that at least one of the two systems will detect the attack as follows:
[tex]P(X\geq 1)=1-P(X<1)\\=1-P(X=0)\\=1-{2\choose 0}(0.90)^{0}(1-0.90)^{2-0}\\=1-0.01\\=0.99[/tex]
(c)
Compute the probability that at least one of the three systems will detect the attack as follows:
[tex]P(X\geq 1)=1-P(X<1)\\=1-P(X=0)\\=1-{3\choose 0}(0.90)^{0}(1-0.90)^{3-0}\\=1-0.001\\=0.999[/tex]
(d)
On using only one system the probability that a single detection system will detect an attack is 0.90.
On using two systems the probability that at least one of the two systems detecting the attack is 0.99.
And on using three systems the probability that at least one of the three systems detecting the attack is 0.999.
So as the number of system is increasing the probability of detecting the attack is getting closer to 1.
Thus, it would be wise to recommend that multiple detection systems be used.
William wants to buy a new skateboard that costs $48.80. He has saved ¼ of the amount necessary. How much money has he saved?
Answer:
He saved 12.2 dollars
Step-by-step explanation:
Answer:
William saved $12.20
Step-by-step explanation:
Its easy if you know mental math!
Which of the following are solutions to the equation below?
Check all that apply.
3x2 + 27 x = 30
A. -1
B. -10
C. -2
D. -2
E. 1
F. 10
Answer:
The answer is B. -10 and E. 1
Identify the type of function represented by
f(x)=4x2^x
Answer:
derivative
Step-by-step explanation:
. Automobile Insurance An insurance company
classifies drivers as low-risk, medium-risk, and highrisk. Of those insured, 60% are low-risk, 30% are
medium-risk, and 10% are high-risk. After a study, the
company finds that during a 1-year period, 1% of the
low-risk drivers had an accident, 5% of the medium-risk
drivers had an accident, and 9% of the high-risk drivers
had an accident. If a driver is selected at random, find
the probability that the driver will have had an accident
during the year.
Answer: during the year many medium risk are chosen
Step-by-step explanation:
Solve the Equation: 1/3x=-5
Answer:
x = -15
Step-by-step explanation:
[tex] \dfrac{1}{3}x = -5 [/tex]
Multiply both sides by 3.
[tex] 3 \times \dfrac{1}{3}x = 3 \times (-5) [/tex]
[tex] x = -15 [/tex]
If (82)p = 84, what is the value of p? (5 points)
2
3
4
6
I think it would be 2, PLEASE HELP ME
Answer:
is there an option for neither? cause none of these numbers work
Which line is perpendicular to a line that has a slope of -1/3?
a. line MN
b. line AB
c. line EF
d. line JK
Answer:
Option (c)
Step-by-step explanation:
Slope of a line that passing through two points M(-1, 4) and N(2, -5),
[tex]m_1[/tex] = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
= [tex]\frac{-1-2}{4+5}[/tex]
= -([tex]\frac{3}{9}[/tex])
= -[tex]\frac{1}{3}[/tex]
To find the line perpendicular line to MN we will use the property,
[tex]m_1\times m_2=-1[/tex]
Where [tex]m_1[/tex] and [tex]m_2[/tex] are the slopes of two perpendicular lines.
Slope of line perpendicular to MN [tex](m_2)[/tex] will be,
[tex]-\frac{1}{3}\times m_2=-1[/tex]
[tex]m_2=3[/tex]
Slope of line joining two points J(-3, -4) and K(3, -2),
Slope = [tex]\frac{-4+2}{-3-3}=\frac{1}{3}[/tex]
Slope of line joining two points A(-3, 2) and B(3, 0)
Slope = [tex]\frac{2-0}{-3-3}=-\frac{1}{3}[/tex]
Slope of the line joining points E(0, -3) and F(2, 3),
Slope = [tex]\frac{-3-3}{0-2}[/tex] = 3
Therefore, line EF is perpendicular to the line MN.
Option (c) is the answer.
what is the base 8 representation of the number 11100111
If the given number is in base 2, that means
11100111₂ = 2⁷ + 2⁶ + 2⁵ + 2² + 2 + 1
8 = 2³, and so we have
11100111₂ = 2 • (2³)² + (2³)² + 2² • 2³ + 2² + 2 + 1
11100111₂ = 3 • 8² + 4 • 8 + 7
11100111₂ = 347₈
Because 8 is the 3rd power of 2, we can also split up the given number into block of length up-to 3, then convert each block directly into base 8:
11 100 111
11₂ = 2 + 1 = 3
100₂ = 2² = 4
111₂ = 2² + 2 + 1 = 7
so again we get 347₈.
Parallel lines n and p are intersected by transversal lines q and m as shown in the figure below. Lines q, m, and p intersect at a common point
Answer:
Is the question where they intersect? If so which points?
Step-by-step explanation:
