The proportion in the population who will respond "no" is 0.25
what is probability?The ratio of good outcomes to all possible outcomes of an event is known as the probability. The number of positive results for an experiment with 'n' outcomes can be represented by the symbol x. The probability of an event can be calculated using the following formula.
Probability(Event) = Favorable Outcomes/Total Outcomes = x/n
Given:
Total people surveyed= 400
people say 'yes'= 300
people say 'no' = 100
Now, proportion in the population who will respond "no" is
= 100/400
=1/40
= 0.25
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What is the value of x?
all angle = 60 degrees
so 2x-4 =60
2x=64
x = 64/2 = 32
x = 32
You live near a bridge that goes over a river. The underneath side of the bridge is an arch that can be modeled with the function y= -0.000475x^2 + 0.851x, where x and y in feet. How high above is the river bridge (the top of the arch)? How long is section of bridge above the arch?
A)The bridge is about 1,791.58 ft. above the river, and the length of the bridge above the arch is about 381.16 ft.
B)The bridge is about 1,791.58 ft. above the river, and the length of the bridge above the arch is about 895.79 ft.
C)The bridge is about 381.16 ft. above the river, and the length of the bridge above the arch is about 895.79 ft.
D)The bridge is about 381.16 ft. above the river, and the length of the bridge above the arch is about 1,791.58 ft
The only solution of the equation x2 + bx + 16 = 0 is x = 4. What is the value of b?
b = –16
b = –8
b = 8
b = 16
Answer:
Option B is correct.
value of b = -8
Step-by-step explanation:
Given the equation: [tex]x^2+bx+16= 0[/tex]
As per the condition: The only solution for the given equation is, x = 4.
Substitute this value of x =4 in given equation, to solve for b;
[tex](4)^2+b(4)+16= 0[/tex]
Simplify:
[tex]16+4b+16= 0[/tex]
or
[tex]32 + 4b= 0[/tex]
Subtract 32 on both sides, we get;
32 + 4b -32 = 0-32
Simplify:
4b = -32
Divide both sides by 4 we get;
b = -8
therefore, the value of b = -8
What is the area of a parallelogram whose vertices are A(−4, 9) , B(11, 9) , C(5, −1) , and D(−10, −1) ?
PLEASE HELP ME!!!!!! 20pts
Given: Circle P with a point O outside of the circle. How many tangent lines can be drawn from point O to the Circle P?
0
1
2
Infinite
The best way to determine how many tangent lines can be created is to actually draw the circle and point itself. Given circle and a point outside, extend lines going from the point to the circle where the line is tangent to the circle. From this, we can get only 2 tangent lines, nothing more. (See attached)
Answer:
2
Answer:
I think its 2
Step-by-step explanation:
Wall posters are usually sold curled up in cylindrical cardboard tubes. if the length of the tube is 84.5 cm, and the diameter of the tube is 2.40 cm, what is the area of the poster, in cm2? (assume the poster doesn't overlap itself.)
a. 637 cm2
b. 203 cm2
c. 382 cm2
d. 1529 cm2
e. 605 cm2
Suppose that you work part-time as a sales representative at a car dealership. You earn a base salary of $125 per week plus a 18% commission on all sales that you make. Your best friend has exactly the same job at another car dealership but earning a base salary of 85$ per week plus a 21% commission on all sales. How much do you and your friend need to sell in order to earn the same amount in any given week?
Solve for b 2(b-2)=2b+9
A rectangle has perimeter 84 cm and length 35 cm. What is its width?
Answer: The required width of the rectangle is 7 cm.
Step-by-step explanation: Given that a rectangle has perimeter 84 cm and length 35 cm.
We are to find the width of the rectangle.
Let w represents the width of the rectangle.
According to the given information,
length, l = 35 cm and perimeter, P = 84 cm.
Therefore, we get
[tex]P=2(l+b)\\\\\Rightarrow 84=2(35+w)\\\\\Rightarrow 42=35+w\\\\\Rightarrow w=42-35\\\\\Rightarrow w=7.[/tex]
Thus, the required width of the rectangle is 7 cm.
Which value of a would make the following expression completely factored?
x2 – a
a 12
b 36
c 49
d 81
Answer:
The correct answer is twelve.
Step-by-step explanation:
The values of a would make the expression 36, 49 and 81.
The correct options are b, c, and d.
What is a quadratic equation?For variable x : ax² + bx + c = 0, where a≠0 is a standard quadratic equation, which is a second-order polynomial equation in a single variable. It has at least one solution since it is a second-order polynomial equation, which is guaranteed by the algebraic basic theorem.
To factor the expression x² - a completely, we need to write it as a product of two binomials.
This can be done using the difference of squares formula, which states that a² - b² = (a + b)(a - b).
If we apply this formula to x² - a, we get:
x² - a = (x + sqrt(a))(x - sqrt(a))
This is a factorization of x² - a into two binomials, where the constant term a is represented by the square root of a.
For the expression x² - a to be completely factored, both factors must be irreducible (meaning they cannot be factored any further). This requires that a be a perfect square.
Out of the given options, 36, 49, and 81 are perfect squares.
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For the given functions f and g, find the requested composite function value. (15 pts!!!)
f(x) = √x+3, g(x) = 5x; Find (f ×g)(3).
a. 3√2
b. 5√30
c. √30
d. 5√6
Bob bought a bike for $250 and repaired it . He can now sell the bike for $300. What is the percent increase in the value bike ?
Answer:20%
Step-by-step explanation:
250*20%=50
50+250=300
Answer:
20%
Step-by-step explanation:
BRAINLIESTTTT aSAP!
i only need part b :)
Decide which of the two points lies on the graph of the line
3x+y=10
A.3,1
B. 1,3
Consider the following system of equations.
Which statement describes why the system has two solutions?
A. Each graph has one y-intercept, which is a solution.
B. Each graph has one vertex, which is a solution.
C. The graphs of the equations intersect the x-axis at two places.
D. The graphs of the equations intersect each other at two places.
Answer:
D. Each has a slope of –3, but one has a y-intercept of 3 and the other has a y-intercept of –1, which makes the lines equivalent.
Step-by-step explanation:
If you look at the graph (Firstly), you can see that both lines look similar, which is one big hint to this question. But (secondly), like the other person said, both have equivalent y-intercepts in each problem. I saw an open spot for me to answer this so I took it UuU!
Also Just Realized This Is A Totally Diff Question On My Quiz, So The Question That Goes With This Answer Is "Consider the equations and graph below.
y = negative 3 (x minus 1). Y = negative 3 x minus 1
On a coordinate plane, 2 lines are parallel to each other.
Which explains why this system has no solution?"
If a 40-foot tree casts a 16-foot shadow, find the length of the shadow cast by a 24-foot tree
The shadow of the 24-foot tree will be 9.6 feet.
What is the ratio?
In mathematics, ratios are used to determine the relationship between two numbers it indicates how many times is one number to another number.
Given that:-
If a 40-foot tree casts a 16-foot shadow, find the length of the shadow cast by a 24-foot tree.The shadow of the 24-foot tree will be calculated as follows:-
[tex]\dfrac{40}{16}=\dfrac{24}{x}[/tex]
[tex]x = \dfrac{24\times 16}{40}[/tex]
x = 9.6
Therefore the shadow of the 24-foot tree will be 9.6 feet.
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Final answer:
To find the length of the shadow cast by a 24-foot tree, we use the proportion of a 40-foot tree's height to its 16-foot shadow. The resulting shadow length for the 24-foot tree calculated through cross-multiplication is 9.6 feet.
Explanation:
The length of the shadow cast by a 24-foot tree can be found using a simple proportion based on the shadow cast by a 40-foot tree. Since a 40-foot tree casts a 16-foot shadow, the ratio of the height of the tree to the length of its shadow is 40 to 16. This ratio should be the same for the 24-foot tree. To find the shadow length (x) of the 24-foot tree, we set up the proportion as follows:
40 feet (tree height) / 16 feet (shadow length) = 24 feet (tree height) / x feet (shadow length)
Solving for x gives us:
40 / 16 = 24 / x
40 * x = 24 * 16
x = (24 * 16) / 40
x = 384 / 40
x = 9.6 feet
Therefore, the shadow cast by a 24-foot tree would be 9.6 feet long.
Match the following unit volumes with the most appropriate converted unit volume:
1. 2.64 gallons ...... 3 liters
2. 0.14 cubic meters ..... 5 cubic feet
3. 5.35 cubic meters ....... 7 cubic yards
4. 6.34 pints...... 10 liters
The correct match is given below:-
2.64 gal-10 liters
0.14 cubic meters -5 cubic feet
5.35 cubic meters- 7 cubic yards
6.34 pints=3 liters
What is unit conversion?Multiplication or division by a numerical factor, selection of the correct number of significant figures, and unit conversion are all steps in a multi-step procedure. Unit conversion is the process of changing a quantity's measurement between different units, frequently using multiplicative conversion factors.
Volume is a measurement of three-dimensional space that is occupied. It is frequently expressed mathematically using imperial or SI-derived units.
The correct match is given below:-
2.64 gal ⇒ 10 liters
0.14 cubic meters ⇒ 5 cubic feet
5.35 cubic meters ⇒ 7 cubic yards
6.34 pints ⇒ 3 liters
Hence, the unit conversion is all steps in a multi-step procedure.
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What is (5,9) reflectes across the Y and X axis
The reflection of points across Y and X axis will be equal to (-5, 9), (5, -9).
What is reflection of points?A reflection is referred to as a flip in geometry. A reflection is the shape's mirror image.
A line, called the line of reflection, will allow an image to reflect through it. Every element inside a figure is thought to reflect another figure when they are all equally spaced apart from one another.
As per the mentioned data in the question,
The given point is (5, 9).
Under the reflection in the y-axis, points are converted as,
(x, y) ⇒ (-x, y)
So,
(5, 9) ⇒ (-5, 9)
Under the reflection in the x-axis, points are converted as,
(x, y) ⇒ (x, -y)
So,
(5, 9) ⇒ (5, -9)
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Kim, Laura and Molly share £385
The ratio of the amount of money Kim gets to the amount of money Mollley gets is 2:5
Kim gets £105 less than Molly gets
What percentage of the £385 does Laura get ?
With working out
PLEASE ANSWER THIS
Classify each expression as a polynomial or not. If the expression is a polynomial, name it according to its degree and its number of terms.
f(x)=x^2sqrt3+x-5
I already know it is a polynomial because the highest variable is 2. Please help me with the rest. The question itself confuses me
PLEASE HELP QUICK!!!
Two airplanes left the same airport and arrived at the same destination at the same time. The first airplane left at 8:00 a.m. and traveled at an average rate of 496 miles per hour. The second airplane left at 8:30 a.m. and traveled at an average rate of 558 miles per hour. Let x represent the number of hours that the first plane traveled. How many hours did it take the first plane to travel to the destination?
Enter an equation that can be used to solve this problem in the first box.
Solve for x and enter the number of hours in the second box.
The width of a rectangle is 3 less than twice its length. if the area of the rectangle is 193 cm 2 cm2, what is the length of the diagonal
The table shows the outputs, y, for different inputs, x:
Input (x) 2 5 9 12
Output (y) 20 15 12 8
Part A: Do the data in this table represent a function? Justify your answer. (3 points)
Part B: Compare the data in the table with the relation f(x) = 5x + 14. Which relation has a greater value when x = 9? (2 points)
Part C: Using the relation in Part B, what is the value of x if f(x) = 64? (5 points)
At a local store, hot dogs come in packages of 8, and hot dog buns come in packages of 12. For her party, Arpitha purchased the minimum number of hot dog packages and bun packages that she could while making sure to have the same number of hot dogs and buns. How many hot dogs can Arpitha serve at her party?
They both have 24 in common, She bought 3 packs of hotdogs and two packs of hotdog buns.
We have given that,
At a local store, hot dogs come in packages of 8, and hot dog buns come in packages of 12.
Let's first analyze the word problem we have here.
It is stating that she, Arpitha, bought the minimum packs of hotdogs and minimum packs of buns to get an equal number of buns to hotdogs.
We can find the multiples they have in common.
8, 16, 24, 32, 40
12, 24, 36, 48, 60
They both have 24 in common, She bought 3 packs of hotdogs and two packs of hotdog buns.
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Please help me on this question
A website-hosting service charges businesses a onetime setup fee of $275 plus d dollars for each month. If a business owner paid $1,091 for the first 12 months, including the setup fee, what is the value of d? a. Create an equation to represent this situation.
b.Solve
your equation above to find the value of d. Show all work to receive full
credit
What is the length of BC
The Earth's circumference measured at the equator is approximately 1.3148 × 108 feet. What is the number written in standard form?
Answer:
The number written in standard form is [tex]131,480,000[/tex]
Step-by-step explanation:
we have
[tex]1.3148*10^8[/tex]
we know that
[tex]10^8=100,000,000[/tex]
substitute
[tex]1.3148*10^8=1.3148(100,000,000)[/tex]
Remember that
When multiplying decimals by 10, move the decimal point one space to the right
In this case move the decimal point eight spaces to the right
[tex]1.3148(100,000,000)=131,480,000[/tex]
therefore
The number written in standard form is [tex]131,480,000[/tex]
someone please help me! thank you so much
Find the constant of variation k for the direct variation. 3x+5y=0
Answer:
The constant of variation is
-3/5
your welcome XD