I'm suggesting this was supposed to be the table:
A survey was conducted of students at a high school and at a college to determine students' favorite subjects. The results are shown in the table.
History Math Science Total
High School 80 50 70 200
College 70
60
70 200
Total 150 110 140 400
What percentage of the students are college students that prefer history?
O A. 17.5%
OB. 35%
OC. 37.5%
D. 46.7%
E 75%
Answer: 35%Stephanie has a 3⁄4 pound bag of sand that she will pour into 4 vases. Each vase will have the same amount of sand. How many pounds of sand will each vase have? Write your answer as a fraction.
Answer:
3/16 pound
Step-by-step explanation:
hope it helps the picture show how its done
I will give brainiest to whoever answers correctly !!
Answer:
0.50 %
Step-by-step explanation:
= profit/cost x 100%
= 11.95 - 7.95 = 4
= 4/7.95 x 100 %
= 0.50 %
What is the slope? (IXL)
Answer:
2/3
Step-by-step explanation:
Why are these triangles similar?
Answer:
I think they are similar by SAS.
Step-by-step explanation:
Both triangles may not be the same size, but they have similar sides and similar angles.
I clearly don't know how to do it if i did i wouldn't be asking for help.
Answer:
132 degrees
Step-by-step explanation:
answer : 48 degrees
method
1. opposite angles are the same , so CFG os the same as GAC - these two added up are 132 + 132 = 264
2. angles add up to 360 in a quadrilateral , so the sum of the two remaining angles is 360 - 264 = 96
3. because the two remaining angles , ACF and FGA , are opposite , those are equal too. so u just half to get one of them : 96 / 2 = 48
FAST
Which statements about the system are true? Select two options
Y=1/3x-4 3y-x=-7
The system has one solution
The system consists of parallel lines
Bothsire tave the same slope,
Both ties have the same y-Intercept
The equations represent the same line
Answer: The system consists of parallel lines
Step-by-step explanation:
Given system of lines :
[tex]y=\dfrac13x-4[/tex]
[tex]3y-x=-7[/tex]
Substitute [tex]y=\dfrac13x-4[/tex] in [tex]3y-x=-7[/tex], we get
[tex]3(\dfrac13x-4)-x=-7\\\\\Rightarrow\ x-12-x=-7\\\\\Rightarrow\ -12=-7[/tex] , which is not true.
That means , system has no solution.
i.e. they are representing parallel lines. [Parallel lines do not intersect and hence they do not have solution.]
Select the expression that is equivalent to 2x3+11x2−21xx2+3x for x ≠ −3 or 0 .
Answer:
[tex]\frac{(2x-3)(x+7)}{x+3}[/tex]
Step-by-step explanation:
Given
[tex]\frac{2x^3+11x^2-21x}{x^2+3x}[/tex]
Required
Select equivalent expression
[tex]\frac{2x^3+11x^2-21x}{x^2+3x}[/tex]
Factorize the numerator and denominator
[tex]\frac{x(2x^2+11x-21)}{x(x+3)}[/tex]
Divide by x/x
[tex]\frac{2x^2+11x-21}{x+3}[/tex]
Expand the numerator
[tex]\frac{2x^2+14x-3x-21}{x+3}[/tex]
Factorize the numerator
[tex]\frac{2x(x+7)-3(x+7)}{x+3}[/tex]
[tex]\frac{(2x-3)(x+7)}{x+3}[/tex]
Hence, the equivalent expression is:
[tex]\frac{(2x-3)(x+7)}{x+3}[/tex]
A company purchased 10,000 pairs of men's slacks for $19.36 per pair and marked them up $22.33 What was the selling price of each pair of slacks? Use the formula
Answer:
$41.69
Step-by-step explanation:
The computation of the selling price of the each pair of slacks is as follows:
Given that
Cost = $19.36 per pair
Markup = $22.33
As we know that
Markup = Sell Price - Cost
So,
Sell Price = Cost + Markup
= $19.36 + $22.33
= $41.69
Hence, the selling price is $41.69
A cubic root function has a domain of x>=7 and a range of y>=-1, what is the domain of its inverse?
Answer:
The domain of the inverse is x >= -1
Step-by-step explanation:
Functions:
Domain: Values of input(usually x).
Range: Values of output(usually y)
Inverse function:
The domain of the inverse function is the range of the original function.
The range of the inverse function is the domain of the original function.
In this question:
Original function has range y >= -1.
So the domain of the inverse is x >= -1
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 290 engines and the mean pressure was 7.6 pounds/square inch (psi). Assume the population standard deviation is 0.8. The engineer designed the valve such that it would produce a mean pressure of 7.5 psi. It is believed that the valve does not perform to the specifications. A level of significance of 0.02 will be used. Find the value of the test statistic. Round your answer to two decimal places.
Answer:
z(s) = - 2,15 We accept H₀
Step-by-step explanation:
Assume Normal Distribution.
Sample size n = 290
Sample mean μ = 7,6
Sample standard deviation s = 0,8
Level of significance 0,02 ( CI = 98 % )
population mean μ₀ = 7,5
α = 0,02 the valve could fail under and above the spec value ( 7,6 ) therefore we must develop a two-tail test
α/2 = 0,01
Hypothesis Test
Null hypothesis H₀ μ = μ₀
Alternative Hypothesis Hₐ μ ≠ μ₀
for α = 0,01 z(c) = - 2,3
To calculate z(s)
z(s) = ( μ - μ₀ ) / s/√n
z(s) = ( 7,5 - 7,6 ) /0,8/√290
z(s) = - 0,1 * 17 /0,8
z(s) = - 1,7 / 0,8
z(s) = - 2,15
Comparing z(s) and z(c)
- 2, 15 < - 2,3
|z(s)| < | z(c)|
Then z(s) is in the acceptance region. We don´t have evidence to reject H₀
Paul needs to buy 5/8 pound of peanuts. The scale at the store measures parts of a pound in sixteenths. What measure is equivalent to 5/8 pound?
Answer:
10 / 16
Step-by-step explanation:
10/16
5 x 2 = 10
8 x 2 = 16
Does this graph show a function? Explain how you know.
A. Yes, there are no y-values that have more than one x-value.
B. No; the graph fails the vertical line test.
C. No; there are y-values that have more than one x-value.
O D. Yes; the graph passes the vertical line test.
Answer:
we cant see the graph ... post again so we can help
Poor c cups never had a chance to have a d cup its ok others feel your pain
Answer:
uuuuuuuuuuuuuummmmmmmmmmmmm what
Step-by-step explanation:
Which table represents a linear function?
Answer:
you are flying a kite that has been released with 200 M of string the string forms in angle of 30° with the ground how high is the kite flying
ADD ANSWER
+5 PTS
Step-by-step explanation:
I'm solving for UW. And we're using pythagorean theorem.
Answer:
6^2+x^2 = 9^2x^2 = 9^2-6^2 = 81-36 = 45
x = √45
UW = √45 ft
Translate into an inequality or equation and solve: A number "n" minus 6 is no greater than 20. Write and
solve an equation or inequality.
Answer:
Therefore, n is smaller than 26 (n < 26).
Step-by-step explanation:
First, you have to form an inequality. With the given informations, the inequality will be :
[tex]n - 6 < 20[/tex]
Next, you have to solve it, by adding 6 to both sides :
[tex]n - 6 < 20[/tex]
[tex]n - 6 + 6 < 20 + 6[/tex]
[tex]n < 26[/tex]
Answer:
N-6≤20 N≤26
Step-by-step explanation:
n-6≤20
n-6=20
+6 +6
n≤26
Harper sells appliances. She makes a weekly salary of $450 plus 3% commission on her total sales for the week. If her sales this pasts week were $3,200, find her total earnings for the week.
Answer:
$ 246
Step-by-step explanation:
3% of 3,200 is 96
so 96 + 450 = 246
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $9 monthly fee and charges an additional $0.13 for each minute of calls. The second plan has a $16 monthly fee and charges an additional $0.09 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal
Answer:
the number of minutes of call when the two cost plans would be equivalent to each other is 175 minutes
Step-by-step explanation:
The computation of the number of minutes of call when the two cost plans would be equivalent to each other is shown below:
Let us assume the number of minutes be x
Now the equation is
$9 + 0.13x = $16 + $0.09x
0.13x - 0.09x = $16 - $9
0.04x = $7
x = $7 ÷ 0.04
= 175 minutes
Hence, the number of minutes of call when the two cost plans would be equivalent to each other is 175 minutes
Select the correct choice below and fill in the answer box(es) to complete your choice.
(Type a whole number.)
A. 874÷23=?
B. 874÷23=? R ?
In the answer B the reason why i put an R is because they it also asks for an a remainder. And plz take ur time on this i'm in no rush and DONT JUST BE HERE FOR POINTS.! So plz help me on this and take ur time plz. I'll help u with anything u need.<3
Answer: 38 think
Step-by-step explanation:
Answer:
ok so
Step-by-step explanation:
874÷23=38
yw:)
A sample of a radioactive isotope had an initial mass of 540 mg in the year 1991 and decays exponentially over time. A measurement in the year 1996 found that the sample's mass had decayed to 420 mg. What would be the expected mass of the sample in the year 2000, to the nearest whole number?
Using the decay constant on the exponential function, the mass of the sample that will be left in 2013 is 35g
What is an Exponential Function?An exponential function is a function that can be expressed in the form f(x) = b^x, where b is a positive real number and x is a real number. The graph of an exponential function is a curve that increases or decreases rapidly as x increases or decreases.
here, we have,
In the exponential decay, the decay function can be given as;
y = ae⁻ⁿˣ
a = initial mass of sample
n = disintegration constant
x = time
The disintegration constant is also know as the rate of decay and we can calculate it as;
260 = 470e⁻ⁿ⁽³⁾
n = 0.197
n = 0.2
The disintegration constant is 0.2
The amount left in 2013 will be;
y = 470e⁻⁽⁰.²⁾⁽¹³⁾
y = 34.90
The mass in 2013 is 35g
Learn more on exponential function here;
brainly.com/question/2456547
#SPJ3
complete question:
A sample of a radioactive isotope had an initial mass of 470 mg in the year 2000 and decays exponentially over time. A measurement in the year 2003 found that the sample's mass had decayed to 260 mg. What would be the expected mass of the sample in the year 2013, to the nearest whole number?
what is (52-43)/3x(2+3) the slash means divide please help !!!!!!!!!!!!!!!
Answer:
9 ÷ 15x
Step-by-step explanation:
( 52 - 43 ) /3x ( 2 + 3)
PEMDAS
Parenthesis, Exponents, Multiplication, Divison, Addition, Subtraction
Do the parenthesis first.....
52 - 43 = 9
9 ÷ 3x ( 2 + 3)
Parenthesis ( do the distributive property...multiply 3x by whatever is inside the parenthesis)
9 ÷ 3x × 2 + 3x × 3
9 ÷ 6x + 9x
Combine like terms (both x's)
9 ÷ 15x
You can't do anymore, since it is just an expression, and not an equation
Hope this helped!
Have a supercalifragilisticexpialidocious day!
2 companys are in a leage together.
company 1 :it costs 20 dolors to come to the house and 30 dollors per hour to work on the house.
company 2: it costs 40 for them to come to the house and it costes 25 dollars a hour to work on the house.
how log do they both have to work for their total cost equel.
Answer:
I believe it would be 9 hours for company 1, and 10 for company 2
Step-by-step explanation:
30 x 9 = 270 (+ the first 20) =290
25 x 10 = 250 (+ the first 40) =290
Translate and solve: 58% of what number is 145?
Answer:
58% of 250 is 145.
Step-by-step explanation:
145 * 100/58
= 250
Answer:
250
Step-by-step explanation:
A toy jet is 4 inches in length. And it's made using the scale 1 inch = 12.25 feet. What is the length of the actual jet?
Answer:
It is 49
Step-by-step explanation:
multiply 12.25 by 4 since 1 inch is 12.25 and 4 inches times 12.25 is 49
First consider 100%. What is 100% of $40?
Answer:
$40
Step-by-step explanation:
100% just means the whole, so 100% of $40 is $40.
Using the formula from part a, calculate the retail price for each quantity range.
Answer:
You have to answer to other question before answering this one, just in case anyone was confused
Step-by-step explanation:
the screen size of a television is determined by the length of the diagonal of the rectangular screen. Traditional TVs come in a 4:3 format, meaning the ratio of the length to width of screen is 4 to 3. what is the area of a 27-inch traditional tv screen? what is the area of a 27 inch LCD tv who's screen is in a 16:9 format? which screen is larger
Answer:
Area of 27" 4:3 screen = 349.92 square inches
Area of 27" 16:9 screen ≅ 311.5 square inches
Traditional 4:3 screen is larger
Step-by-step explanation:
The Traditional TVs is larger than LCD tv screen
What is diagonal of rectangle?The diagonal of a rectangle is a line segment that joins any two of its non-adjacent vertices.
The length of diagonals of a rectangle can be calculated as:
Diagonal of rectangle = [tex]\sqrt{Length^{2} + Breath^{2} }[/tex]
According to the question
The screen size of a television is determined by the length of the diagonal of the rectangular screen.
Traditional TVs
Ratio of the length to width = 4:3
Let a be the constant for both length and width
therefore
Length of Traditional TVs = 4a
Width of Traditional TVs = 3a
The area of a 27-inch traditional tv screen
i.e
Diagonal of Traditional TVs = 27
Now applying formula of diagonal of rectangle
Diagonal of rectangle = [tex]\sqrt{Length^{2} + Breath^{2} }[/tex]
substituting the values
27 = [tex]\sqrt{(4a)^{2} + (3a)^{2} }[/tex]
27 = [tex]\sqrt{16a^{2} + 9a^{2} }[/tex]
27 = [tex]\sqrt{25a^{2} }[/tex]
27 = ± 5a
a cannot be -ve
a = 5.4
now,
Length of Traditional TVs = 4* 5.4 = 21.6 inches
Width of Traditional TVs = 3 * 5.4 = 16.2 inches
Area of Traditional TVs = Length * width
= 21.6 * 16.2
= 349.92 [tex]inches^{2}[/tex]
LCD TVs
Ratio of the length to width = 16:9
Let a be the constant for both length and width
therefore
Length of LCD TVs = 16a
Width of LCD TVs = 9a
The area of a 27-inch LCD TVs screen
i.e
Diagonal of LCD TVs= 27
Now applying formula of diagonal of rectangle
Diagonal of rectangle = [tex]\sqrt{Length^{2} + Breath^{2} }[/tex]
substituting the values
27 = [tex]\sqrt{(16a)^{2} + (9a)^{2} }[/tex]
27 = [tex]\sqrt{256a^{2} + 81a^{2} }[/tex]
27 = [tex]\sqrt{337a^{2} }[/tex]
27 = ± 18.357a
a cannot be -ve
a = 1.47
now,
Length of LCD TVs = 16*1.47 = 23.53
Width of LCD TVs = 9*1.47 = 13.23
Area of Traditional TVs = Length * width
= 21.6 * 16.2
= 311.30 [tex]inches^{2}[/tex]
Hence, the Traditional TVs is larger than LCD tv screen .
To know more about diagonal of rectangle here:
https://brainly.com/question/26044249
#SPJ2
HELP ME PLESE HOW TO SOLVE IT
the answer I guess is 8.
Identify the slope and y-intercept of the following equation:
Y= -1/2x + 6
Please help me answer this
Explain you’re answer
Will give braisnlt
Answer: I think its a
Step-by-step explanation:
