Eric surveyed 40 students at his school and found that 0.65 of the students he surveyed said their favorite class is math. Another 35% of the students he surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?
Answer:
12 students
Step-by-step explanation:
So we know that 65% of students prefer math over the 35% of students that prefer science.
To find the answer we have to change the percentages to decimals and multiply by 40, which is the total number of students.
Math: 65%=0.65 , so 0.65 times 40=26 students
Science:35%=0.35, so 0.35 times 40=14 students
To find the difference, subtract 26 and 14, to get 12.
All in all, twelve students prefer math over science.
Hope I helped, have a nice day :)
Answer:
Answer is 12 more students prefer math over science.
Step-by-step explanation:
For this question all you need to to is multiply the decimal or the percent by 40 to get the student ratio. So for the math. 40 * .65 = 26. So 26 students like math.
For the science we do 40*35% or if you want to write it decimal form 40*.35 = 14. Okay now we have both values all you need to do to get the difference is subtact 26-14= 12. 12 more students prefer math over science.
What is the probability of flipping a coin 8 times and getting heads 2 times? Round your answer to the nearest tenth of a percent. O A. 27.3% O B. 10.9% O C. 21.9% O D. 3.1% SUBMIT
Answer:
I have the same doubt so pls answer
Step-by-step explanation:
Answer: 10.9
Step-by-step explanation
Translate to an algebraic expression.
A number is 30 less than its square. Find all such numbers.
Step-by-step explanation:
Let the number be n. Then: n = n^2 - 30 .
Rewriting this in standard quadratic format, we get:
n^2 - n - 30.
This factors into: (n - 6)(n + 5),
whose solutions are 6 and -5
Can you give the answers to these problems I let the pictures here (they are only two)
Answer:
Here's what I got
Step-by-step explanation:
(6n^2 - 6n - 5)(7n^2 + 6n - 5)
42n^4 - 6n^3 - 101n^2 + 25
(n^2 + 6n - 4)(2n - 4)
2n^3 + 8n^2 - 32n + 16
Which of these are polygons?
On
А
B
o
D
F
G
G
Answer:
B C and F
Step-by-step explanation:
Polygons are closed shaped with straight lines
D and E have curves therefore they cannot be classified as polygons
A is not closed therefore it A is not a polygon
B, C and F are closed and use only straight lines therefore those 3 are polygons
solve for x. round to the nearest tenth if necessary
9514 1404 393
Answer:
13.6
Step-by-step explanation:
The relevant trig relation is ...
Sin = Opposite/Hypotenuse
sin(29°) = 6.6/x
x = 6.6/sin(29°) . . . . . . multiply by x/sin(29°)
x ≈ 13.6
Answer:
X= 13.6Step-by-step explanation:
hope it helps much
Hawkeye Elementary School is having a raffle for students who are in sports. The school leaders are voting to choose between the two options below.
i. Option 1: Raffle off two items and include all boys and girls in each raffle.
ii. Option 2: Have a separate raffle for boys and a separate raffle for girls.
Not in sports In sports Total
Girls 17 18 35
Boys 17 21 38
Total 34 39 73
Required:
If you get to vote and you have a daughter in sports, which option would you vote for and why?
Answer:
The answer is "0.052 and 0.056".
Step-by-step explanation:
For option 1:
Your daughter's opportunity (in sport) (when a person only wins once)
[tex]\to \frac{1}{39}+\frac{1}{38}\\\\ \to \frac{38+39}{1,482} \\\\\to \frac{38+39}{1,482} \\\\\to 0.052[/tex]
For option 2:
Your daughter would win a chance (in sport) [tex]= \frac{1}{18} = 0.056[/tex]
So a little better, the second option. The rationale is that there are fewer girls than boys so if a lottery in a smaller group is awarded you are more likely to win.
This graph shows the cost of a small cheese pizza at 3 different restaurants. a) explain how the size of the bars gives a false impression about the cost of the pizza at different restaurants.
I would answer, but I don’t see the graph. If you add the graph I could help (if you want of course, not trying to be rude. Sorry!)
PLEASE HELP
Does anybody remember that game people used to play as kids on the computers. When I was in 1st grade there would be this game where I placed like a number or something and then a circle or stuff would be drawn. If you know that game pls tell me.
Answer:
ABC ya?
Step-by-step explanation:
I think its in a minigame
Which situation would be represented with the integer -72? Select all that apply.
A hike of 72 feet.
A gain of 72 yards, but a loss of 72 yards, ending back at 0.
A withdrawal of 72 dollars.
A height of 72 inches.
A depth of 72 feet.
HELP THIS IS THE LAST TEST OF THE YEAR PLZ HELPP QUICK!!
Answer:
A withdrawal of 72 dollars & E) a depth of 72 feet
Step-by-step explanation:
It is negative, which means subtract. So we will take away 72 dollars.
A depth of 72 feet is also negative since we are going down.
Which of the following is geometric sequence
A. 1,1/2,1/4,1/8
B.2,4,6,8
C.1,1,2,3,5
D.7,4,1,-2
Answer:
A
Step-by-step explanation:
...................
Answer:
here's the whole unit test
Step-by-step explanation:
ur welcomeeeee ;)
2. If your gross biweekly salary is $3,290, then how much is your annual salary?
I
Answer:
Annual Salary = $85,540
Step-by-step explanation:
There are 52 weeks in a year.
If bi weekly salary is $3290
Then you get paid 26 times.
Therefore annual salary = 26 × 3290 =$85,540
Answer:
$78,960 is your annual salary
Step-by-step explanation:
By saying biweekly, if you mean that your gross salary for every two weeks is $3,290, then your annual salary will be roughly about $78,960
There are about 4 weeks in a month and you're getting your gross salary biweekly. So $3,290 times 2 equals $6,580. This is your monthly gross salary.
Now, multiply $6,580 times 12 to find out your annual salary because there are 12 months in a year. $6,580 times 12 equals $78,960. This is your annual salary
Hope this helps
What combination of variables could you analyze using correlation?
religious identification & life satisfaction
IQ score and annual income
ethnic identification & average # of children
preferred genre of music & age
Answer:
YOu have to add them i think
Step-by-step explanation:
First add the 3-4 and then finish it
Which drawing wouldn’t be useful to find the area of this trapezoid? and why ?
Answer:
C
Step-by-step explanation:
Though you may think that u can change that piece to there, but the possibility is very less
I Need Help With This Don’t Seem To Understand 8
IT
Answer:
44.402
Step-by-step explanation:
Equation
SA = 2L*W + 2L*H + 2*WH
Givens
L = 2.7
W=1.13
H = 5
Solution
LW = 2.7 * 1.13 = 3.051
LH = 2.7 * 5 = 13.5
WH = 1.13 * 5 = 5.65
SA = 2*3.051 + 2*13.5 + 2*5.65
SA = 6.102 + 27 + 11.3
SA = 44.402
The function f(x) is shown in this graph.
(0,2)
The function g(x) = -5x - 6. Compare the slopes.
A. The slope of f(x) is the same as the slope of g(x).
B. The slope of f(x) is undefined, and the slope of g(x) is negative.C. The slope of f(x) is greater than the slope of g(x).D. The slope of f(x) is less than the slope of g(x).
Answer:
D. The slope of f(x) is less than the slope of g(x).
Step-by-step explanation:
✔️Slope of f(x):
Using two points on the line, (0, 2) and (1, -1),
Slope (m) = change in y/change in x
Slope (m) = (-1 - 2)/(1 - 0) = -3/1 = -3
Slope of f(x) = -3
✔️Slope of g(x) = -5x - 6:
The slope of g(x) is -5.
Therefore f(x) has a lesser absolute slope value (3) compared to the absolute slope value of g(x) (5).
Thus, D. the slope of f(x) is less than the slope of g(x).
50% of a number is x. What is 100% of the number? Assume x > 0.
Answer:
2x > 0
Step-by-step explanation:
[tex]\frac{50}{100} :\frac{x}{y}[/tex]
50 × y = x × 100
50y = 100x
50y ÷ 50 = 100x ÷ 50
y = 2x
Solve tan(x+π2)+tan(x−π2)=2 for 0≤x<2π
In the interval 0≤x <π, the solution is
Answer:
[tex]x = \pi \div 4 [/tex]
Solve x – 5 = 16 for x.
Answer:
x=21
Step-by-step explanation:
I hope this is correct if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.
Answer:
21
Step-by-step explanation:
do the inverse opperation of -5 to isolate the variable on the other side and than your answer equals 21.
Which expression is equivalent to 14x^8y^10
Answer:
The answer for this problem is 2xy^6 * 7x^7y^4 (C).
An electronics firm claims that the proportion of defective units of a certain process is 5%. A buyer has a standard procedure of inspecting 15 units selected randomly from a large lot. On a particular occasion, the bury found 5 items defective. a) What is the probability of this occurrence, given that the claim of 5% defective is correct
Answer:
0.0006 = 0.06% probability of this occurrence
Step-by-step explanation:
For each unit, there are only two possible outcomes. Either it is defective, or it is not. The probability of an unit being defective is independent of any other unit, which means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
An electronics firm claims that the proportion of defective units of a certain process is 5%.
This means that [tex]p = 0.05[/tex]
A buyer has a standard procedure of inspecting 15 units selected randomly from a large lot.
This means that [tex]n = 15[/tex]
a) What is the probability of this occurrence?
Probability of 5 defective items, whch is P(X = 5). So
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 5) = C_{15,5}.(0.05)^{5}.(0.95)^{10} = 0.0006[/tex]
0.0006 = 0.06% probability of this occurrence
5c + 40 + 2 and 5c + 2(2c + 1)
Answer:
5c + 42 and 9c + 2
Step-by-step explanation:
if a number has a variable next to it then it cannot be combined with a number that is alone.. Therefore there is no exact answer unless the variable has a number that you can replace it with. So basically numbers with the same number can be added together and numbers alone can be added together. If you do the math right then you should get the answer.
whats the difference between the lowest temperature -8 and the highest 6
Answer:
-14
Step-by-step explanation:
just like 8+6 = 14
-8-6 = -14
For vectors u = i + 6j, v = 5i – 3j, and w = 9i – 2j, determine u • w + v • w.
27
18
90
48
Answer:
This is the explanation you can find answer by rolling it.The Area Ratio of two similar solids is 169: 289. If the volume of the smaller solid is 689,858 cm, what is the volume of the larger solid?
Answer:
1,542,682 cm^3.
Step-by-step explanation:
The scale factor = √169:√289
= 13:17
So the Volume ratio is 13^3:17^3
So the volume of the larger solid is 689,858 * (17^3/13^3)
= 1,542,682 cm^3.
This morning, the cafe served 8 coffees in all, 75% of which were regular. How many regular coffees did the cafe serve?
Answer:
6 regular coffees. Thank it if its helpful, thank you!
Step-by-step explanation:
75% of 8 is 6
Reasoning:
75/100*8/1=600/100
600/100=6!
Answer:
Regular coffee served by cafe = 75%* 8
= 75/100*8 = 6 coffees
Step-by-step explanation:
Choose the equation that represents a line that passes through points (−1, 2) and (3, 1).
A: 4x − y = −6
B: x + 4y = 7
C: x − 4y = −9
D: 4x + y = 2
Answer:
(B) x + 4y = 7
Step-by-step explanation:
Graph the system of equations. { -x +2y = -8, 2x + y =6. Will Mark Brainliest. Need ASAP
Answer:
Graph the -x+2y=-8 as y=1/2x-4
and 2x+4=6 as y=-2x+6
Step-by-step explanation:
hope you understand how to graph y=mx+b equations.
A shelf measures 3.5m long and 50cm high, how many of these
boxes would you be able to store on the shelf?
Answer:
answer choices?
Step-by-step explanation:
The time it takes to do a job is inversely proportional to the number of workers. if 8 workers can do a job in 6 days, then 16 workers can do the same job in how many days
Answer: 16 workers will take 3 days
Step-by-step explanation:
First write down what the question gives you
Time = k/amount of workers
Then substitute the values
6 days = k/8 workers
Change the subject to solve for k
6 days x 8 workers = k
48 = k
Now solve The question using the found value for k with the rewritten formula
Time = k/amount of workers
? days = k/16 workers
? Days = 48/16
= 3 days
