Answer:
this would not not be a valid conclusion because only that class was included In the poll not the entire school. Another method to determine the most popular subject is to include every class(the entire school)in the poll
Answer:
1) biased sample
2) random sampling
Step-by-step explanation:
Since the results are based on feedback of students in only one class, it's not a good representative of the entire student body.
Also, since it's a math class there will be a bias.
Better method would be randomly selecting students from the entire school students list and take their feedback
In a Calculus class, there are 11 freshman and 15 sophomores; 5 of the sophomores are females,
and 8 of the freshman are males. If a student is selected at random, what is the probability of
selecting a freshman or a female? P(Freshman or Female)=
Using it's concept, it is found that there is a 0.6154 = 61.54% probability of selecting a freshman or a female.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, there is a total of 26 students. Of those, the desired outcomes are composed by the 11 freshmen students plus the 5 sophomore females, hence:
p = 16/26 = 0.6154.
0.6154 = 61.54% probability of selecting a freshman or a female.
More can be learned about probabilities at https://brainly.com/question/14398287
Final answer:
To find the probability of selecting a freshman or a female from the calculus class, we calculate the combined unique count of freshmen and females and divide by the total number of students, resulting in a probability of approximately 69.23%.
Explanation:
The question asks for the probability of selecting a freshman or a female student from a calculus class with a total of 11 freshmen and 15 sophomores, where 5 of the sophomores are females and 8 of the freshmen are males. First, let's identify the totals: there are 26 students in total (11 freshmen + 15 sophomores). To find the number of freshmen or females, we consider that there are 3 freshmen females (11 freshmen - 8 males) and 10 sophomore females in total (5 sophomores who are female plus 5 presumed male due to the lack of additional gender data).
So, the number of unique freshmen or female counts is: the 11 freshmen (regardless of gender) plus the 10 females not counted among freshmen (5 sophomores who are females plus an assumed 5 other females given the data isn't explicit about these being the same or different students), minus the 3 freshmen females who are already counted in the freshman group. This gives a total of 18 unique freshmen or females. Therefore, the probability of selecting a freshman or a female is [tex]\(\frac{18}{26}\)[/tex], which simplifies to [tex]\(\frac{9}{13}\)[/tex] or approximately 69.23%.
Can anyone help with this?
Answer:
5 times 2=10
1.5 times 3=4.5
8 times 1/2=4
Step-by-step explanation:
10/5=2
4.5/3=1.5
4/ 1/2 changes to 4 times 2=8
i hope this helps u
pls give a brainliest and a thx ;)
I’m not sure about this can anyone help I mark brilliant
Answer:
C
Step-by-step explanation:
Take the x and y values of each value in each table. Table 3's values all lie on the graphed line and are therefore correct. Remember that x values are side-to-side and y values are up and down.
Answer:
Option C
Step-by-step explanation:
The line passes through the points (0,-1) ; (4,0);(-4,-2)
Plzzzz help mehh and dont steal my cookies UwU
Answer:
31 sq m
Step-by-step explanation:
How do you multiply a decimal greater than 0 and a fraction less than 0
Answer:
Originally Answered: How do you multiply a decimal greater than 0 and a fraction less than 0? Simply multiply the decimal with the numerand (top of the fraction) and divide by the denominator ( bottom of fraction). Since one is positive ( greater than 0) and the other is negative the answer will always be negative.
Step-by-step explanation:
A fraction simply tells us how many parts of a whole we have.
To multiply a decimal greater than 0 and a fraction less than 0 . first convert decimal into fraction.
Then, multiply numerator with numerator and denominator with denominator of both fraction.
For example,
[tex]0.5 * (-\frac{1}{2})\\\\\frac{1}{2} *(-\frac{1}{2} )\\\\-\frac{1}{4}[/tex]
Learn more:
https://brainly.com/question/1369626
The figure is made up of a square and two semicircles. Find the perimeter. Round your answer to the nearest hundredth
Answer:
61.68
Step-by-step explanation:
Use the distributive property to write an expression that is equivalent to each given property.
-3(2x-4)
0.1(-90+50a)
-7(-x-9)
4/5(10y-x+-15)
Answer:
-6x+12
-9+5a
7x+63
8y-4/5x-12
Step-by-step explanation:
To solve these all you have to do is take the number outside of the parenthesis and multiply them by each term.
-3(2x)-3(-4) All I did here was expand the problem to show what i mean by terms.
-6x+12
Do this for each problem.
0.1(-90)+0.1(50a)
-9+5a
-7(-x)-7(-9) For this one you are taking negatives times negatives so each answer will be positive.
7x+63
4/5(10y)+4/5(-x)+4/5(-15)
8y-4/5x-12
what is the square root of 36 and 64
Answer:
the square root of 36 is 6, and for 64 it is 8
Step-by-step explanation:
Answer:
The square root of 36 is 6 and the square root of 64 is 8
I need help please due today
Answer:
hi calm down I am here for you in the image there is a step by step explanation
x=3
y=-5
z=-4
Can someone answer 13??? Please help!!!
Work Shown:
cos(angle) = adjacent/hypotenuse
cos(20) = x/11
11*cos(20) = x
x = 11*cos(20)
x = 10.336618828645
x = 10.3
Make sure your calculator is in degree mode.
Can someone help me with one more pls I’ll comment on yours
Answer:
A:
The perimeter of the parking lot is 302 yards.
The area of the parking lot is 5,544 yards squared.
B: Perimeter
C: Area
Step-by-step explanation:
A:
To find the perimeter of the parking lot, we add all the sides up. 2L + 2W = Perimeter.
2(63) + 2 (88) = 302
To find the area, we multiply the length by the width. 63 × 88 = 5,544.
B: We need to know the amount of chain needed to surround the parking lot. In other words, we need to line the perimeter with a chain.
C: We would be paving the entire area of the parking lot.
Hope this helps,
❤Nicki❤
8. The perimeter of Brianna's rectangular garden is 100 feet. The length of the garden is 1.5 times longer than
the width.
Answer:
Step-by-step explanation:
The perimeter of Brianna's rectangle garden is 100 feet. The length of the garden is 1.5 longer than the width
Given the sector area,how can the radius be determined?from the radius how can the arc length be determined?
Convert to radians
Divide the measure of the angle itself
Multiply the measure of the angle by "A"
Steve will roll a number cube, numbered 1-6, twice. What is the probability
of rolling a number > 3, then rolling a prime number? Simplify your answer!
Answer:
25%
Step-by-step explanation:
First we calculate the probability of rolling a number greater than 3, that is, it can be 4, 5 or 6.
The probability of each number is 1/6, so:
P1 = (1/6) + (1/6) + (1/6) = 3/6 = 1/2
Then, we calculate the probability of rolling a prime number, that is, 2, 3 or 5.
As we have again 3 numbers, the probability P2 will also be 1/2
Then, the final probability is the product of both P1 and P2:
P = P1 * P2 = (1/2) * (1/2) = 1/4 = 25%
Please help!! A picture measuring 4 inches by 6 inches is placed inside a frame which has equal width around the entire picture. If the area of the frame and the picture is 63 square inches, what is the width of the frame?
Answer:
Width of Frame = 1.5 inches
Step-by-step explanation:
The area of the picture is 4 by 6, or
4 * 6 = 24
The frame is same width all sides, let that width of frame each side be "x".
So,
Width of frame (and pic) = 4 + x + x = 4 + 2x
Height of frame (and pic) = 6 + x + x = 6 + 2x
Total area of frame and pic is 63, so we can write:
[tex](4+2x)(6+2x)=63[/tex]
Now, we multiply and solve for "x":
[tex](4+2x)(6+2x)=63\\24+8x+12x+4x^2=63\\4x^2+20x+24=63\\4x^2+20x-39=0\\x=-6.5,1.5[/tex]
We disregard -6.5 since width can't be negative. So, we conclude:
Width of Frame = 1.5 inches
Answer:
1.5 is right
Step-by-step explanation:
Give that dude brainliest
The shorter leg of a right triangle is 8 less than the hypotenuse. The longer leg is 1 less than the hypotenuse. Find the perimeter of the triangle.
Answer:
Perimeter is 30
Explanation:
short leg = h - 8
longer leg = h -1
(h-8)^2 + (h -1)^2 = h^2
h^2 - 16h + 64 + h^2 - 2h + 1 = h^2
h^2 - 16h + 64 + h^2 - 2h + 1 - h^2 = 0
h^2 - 18h + 65 = 0
(h - 13 )(h - 5 ) = 0
h-13 = 0 ---> h = 13 ---> short leg is 5 and long leg is 12 ---> perimeter is 30
h-5 = 0 ---> h = 5 --> short leg is -3 and long leg is 4 <--- disqualified because leg measure cannot be negative
short leg is 5, long leg is 12, hypotneuse is 13
5^2 + 12^2 = 25 + 144 = 169 = 13^2 <--- pythagorean check
perimeter is 5 + 12 + 13 = 30
Find the area of a circle with a circumference of 50.24units
Answer:
A is approximately 200.86 square units.
Step-by-step explanation:
Mrs. Mason, coach of the math team, created the Venn Diagram shown to illustrate which upper-level math courses the team members have completed. How many members are on the math team? A) 6 B) 10 C) 16 D) 30
Answer: 16
Step-by-step explanation:
What is the slope of the line 2x-3y=5?
Answer:
2
Step-by-step explanation:
The slope intercept form is y=mx+b where m is the slope. In this case, it is 2x and 2 is the slope.
Answer:
-3/2
Step-by-step explanation:
Hope this helped
Give the solutions to 23 + √36
Answer: 29
Step-by-step explanation:
23 + √36
Square root of 36 means two same numbers that will give you 36 when multiplied which is 6
23 + √36
= 23+6
= 29
Answer:
29, -17.
Step-by-step explanation:
√36 = 6 , -6
So 23 + 6 = 29 and
23 - 6 = -17.
Bella spent 15% of her paycheck at the mall, and 40% of that was spent at the
movie theater. Bella spent a total of $13.74 at the movie theater for her movie
ticket, popcorn, and a soft drink. How much money was in Bella’s paycheck?
Answer:
$229
Step-by-step explanation:
Pay check = P
so
Total spent movie T = $13.74
T = 0.4 *0.15* P = $13.74
The 40% on the Movie Theatre spending is part of the 15% spending at the mall.
So 40% of 15% of the Pay Check = $13.74
P = $13.74 / (0.4*0.15) = 34.35/0.15 = 229
Increase £2193.67 by 8.5%
Give your answer roIncrease £2193.67 by 8.5%
Give your answer rounded to 2 DP
Answer:
£2380.23
Step-by-step explanation:
The increase will be 8.5% of £2193.76 added to £2193.76
That’s
8.5% of £2193.76
8.5% /100% x £2193.76
0.085 x £2193.76
£186.47
Increase = £2193.76 + £186.47
= £2380.23
QUESTION
Learning Page
An amount of $49,000 is borrowed for 11 years at 6.5% Interest, compounded annually. If the loan is paid in full at the end of that period, how much must be
paid back?
plz help
Answer:
$97,958.42
Step-by-step explanation:
To solve this problem we can use the compound interest formula which is shown below:
[tex]A=P(1+r )^{t}[/tex]
P = initial balance
r = interest rate
t = time
First change 6.5% to its decimal form:
6.5% -> [tex]\frac{6.5}{100}[/tex] -> 0.065
Next plug in the values:
[tex]A=49,000(1+.065)^{11}[/tex]
[tex]A=97,958.42[/tex]
They have to pay back $97,958.42
Three divide by one fourth
Answer:
3 divided by 1/4 will be 1/3 * 1/4 which should give you 1/7.
Answer:
3 divided by one forth is 2.142
Step-by-step explanation:
Erin washed the car 4 minutes slower than half of the amount of time it took time it took
Tad to mow the lawn. In total, the two jobs took Erin and Tad 62 minutes. The amount of
minutes that the jobs took Erin (x) and Tad (y) are given with the system of equations.
X=1/2y-4 x+y=62 How many minutes did it take Erin to wash the car?
Final answer:
By solving the system of equations step by step, we find that Erin took 18 minutes to wash the car.
Explanation:
The question involves solving a system of linear equations to find out how many minutes it took Erin to wash the car. We have two equations, x = 1/2y - 4 and x + y = 62, representing the time it took Erin (x) and Tad (y) to complete their tasks. To find the value of x, we can substitute the expression for x from the first equation into the second equation.
Let's solve the system step by step:
Express x in terms of y: x = 1/2y - 4.Substitute x in the second equation: (1/2y - 4) + y = 62.Combine like terms: 1.5y - 4 = 62.Add 4 to both sides: 1.5y = 66.Divide both sides by 1.5: y = 44.Now, we know Tad took 44 minutes. Substitute y back into the equation for x: x = 1/2(44) - 4.Calculate: x = 22 - 4.Finally, Erin took 18 minutes to wash the car.
What is The factor to this problem?
A.(x+2)(x-9)
B.(x-3)(x-6)
C.(x-2)(x+9)
D.(x+18)(x-1)
Answer:
C) (x+9)(x-2)
Step-by-step explanation:
You need 2 numbers that will add up to be 7 and multiply to be -18
15 points
Which of these can have a positive effect
on your credit score?
A paying credit card balance monthly
6 late payments
© a new job
D high monthly debt repayment
C
ОА
)
OB
Answer:
A paying credit card balance monthly
Step-by-step explanation:
Answer:
Paying your credit card balance monthly
Step-by-step explanation:
To build a good credit, you need to make payments on time, and never miss a payment.
what plus -9 equals -3
Answer:
6
Step-by-step explanation:
adding a positive number make it be less negative
Answer:
6
Step-by-step explanation:
adding a positive will lower the negative number
A receptionist recorded the number of people who took an elevator up from his floor and the number
who took an elevator down. He also noted the number of men and women. The table shows the results.
Elevator Up
Elevator Down
Men
36
43
Women
39
42
What is the experimental probability that the next person will be a woman taking the elevator up?
Answer:
39/160
Step-by-step explanation:
Final answer:
The experimental probability that the next person will be a woman taking the elevator up is calculated by dividing the number of women who took the elevator up (39) by the total number of people who went up (75), resulting in a simplified probability of 13/25.
Explanation:
The question asks for the experimental probability that the next person will be a woman taking the elevator up. To find this, we look at the number of women who previously took the elevator up and divide it by the total number of people taking the elevator up. In the table provided, 39 women took the elevator up, and the total number of people taking the elevator up is the sum of both men and women who did so, which is 36 (men) + 39 (women) = 75 (total).
The experimental probability is therefore calculated as follows:
Probability = Number of Women Going Up / Total Number Going Up
Probability = 39 / 75
The simplified fraction for the probability is 13/25 after dividing both the numerator and the denominator by 3.
Need help if you can let me know thank you
Answer:
No, I don't think so.
Step-by-step explanation:
There are no right angles. Sorry If i'm wrong.