Answer:
f(x)=7
Step-by-step explanation:
f(x)= 1/2x+5 ; x=4
f(4)= 1/2(4)+5
f(4)= 2+5
f(x)=7
Hope this helps, because I just did this lesson and I was confused at first, but with practice you will get it!
When given a set of cards laying face down that spell W, E, L, O, V, E, M, A, T, H, determine the probability of randomly drawing a vowel.
two fifths
two sixths
two tenths
four elevenths
The probability of randomly drawing a vowel is 4/10
Calculating the probability of randomly drawing a vowel.From the question, we have the following parameters that can be used in our computation:
W, E, L, O, V, E, M, A, T, H
Using the above as a guide, we have the following:
Vowels = 4
Total = 10
So, we have
P(Vowel) = Vowel/Total
Substitute the known values in the above equation, so, we have the following representation
P(Vowel) = 4/10
Hence, the solution is 4/10
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Suppose your math teacher was running for Governor. In a pre-election poll of 750 people, the estimate (called a point estimate) was 40%, meaning that 40% of the people would vote for your math teacher. Suppose there was a 4% margin of error. How many people (out of 750) said they would vote for your math teacher? Show your work. Write the answer as a complete sentence.
Solution
- 40% of peole would vote for the mMath teacher out f the 750 people. This implies that the number of people tahat would vote for him is
\(\begin{gathered} 40\%\times750 \\ \frac{40}{100}\times750=300\text{ people} \end{gathered}\)- We are also told that there is a margin of error of 4%. This implies that the number of people that vote for the math teacher is either 4% more or 4% less than the 300 people
- 4% margin of error can be gotten as follows:
\(\frac{4}{100}\times750=30\)- Thus, the number of people that vote for him is 300 give or take 30 people
Can someone help me? Its pretty easy but i'm having a hard time...
Order the numbers from least to greatest. |6|, |0|, |−9|, |−4.2|
Answer:
0, 4.2, 6, 9
Step-by-step explanation:
the sophomore class is planning a picnic the cost of the permit to use the city park is $250 permit there is a fee of $.74 each sophomore and $ 1.25 for each guest was not a sophomore two hundred sophomore plan to attend . write and solve an inequality to find how many guests must attend for the sophomores to pay the permit.
The number of guests that must attend the picnic for the sophomores to pay for the permit is 82.
The sophomore class is planning a picnic. The cost of the permit to use a city park is $250. To pay for the permit, there is a fee of $.74 for each sophomore and $1.25 for each guest who is not a sophomore. A total of two hundred sophomores plan to attend the picnic. Let the number of guests who attend the picnic be "x". We can form an inequality to find the value of x.
0.74*200 + 1.25*x ≥ 250
148 + 1.25x ≥ 250
1.25x ≥ 102
x ≥ 81.6
Hence, the minimum number of guests is 82.
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∠A and ∠B are vertical angles with m∠A = x and m∠B = 4x − 24.
m∠A = ____ degrees
Answer:
8
Step-by-step explanation:
Vertical angles are congruent. That means that they have the same measurement. Set them equal to each other and solve for x
x = 4x - 24 Subtract x from both sides of the equation
o = 3x - 24 Add 24 to both sides
24 = 3x Divide both sides by 3
8 = x
m<A is 8
which ordered pair isa solution of the equation y=8x+3 A.Only (1,11) B.Only (-1,-5) C.Only (1,11) and (-1,-5) D Neither
Answer:
C (1,11) and (-1,-5)
Step-by-step explanation:
A circular carnival ride has a diameter of 120 ft. Suppose you board a gondola at
the bottom of the circular ride, which is 6 ft above the ground, and rotate 240°
counterclockwise before the ride temporarily stops. How many feet above ground
are you when the ride stops?
Answer:
The height above ground when the ride stops is 96 feet
Step-by-step explanation:
The given diameter of the carnival ride, d = 120 ft.
The height of the ride above the ground, h = 6 ft.
The angle through which the ride is rotated, θ = 240° counterclockwise
Therefore, we have;
The radius of the ride, r = d/2
∴ r = 120 ft./2 = 60 ft.
We note that at 180° rotation, the ride is at the highest point, \(h_{max}\) = 6 ft. + 120 ft. = 126 ft.
When the ride rotates a further 240° - 180° = 60° the height drops from the maximum point by y = 60 ft. × cos (60°) = 30 ft., such that the final height above ground is therefore;
h = 126 ft. - 30 ft. = 96 ft.
The height above ground when the ride stops, h = 96 ft.
Possible points: 6.3
a farmer feeds his cows a feed mix to supplement their foraging. the farmer uses two types of feed for the mix. corn feed contains 100 g protein per kg
and 750 g starch per kg. wheat feed contains 150 g protein per kg and 700 g starch per kg. each cow should be fed at most 7 kg of feed per day. the
farmer would like each cow to receive at least 650 g protein and 4000 g starch per day. if corn feed costs $0.40/kg and wheat costs $0.45/kg, then what is
the optimal feed mix that minimizes cost? round your answers to the nearest gram (round to two decimal places as needed.)
how many kg of corn feed should be used?
kg
how many kg of wheat feed should be used?
kg
what is the optimal cost?
8 9
10
11
12 13 14 15
16 17
To determine the optimal feed mix that minimizes cost while meeting the protein and starch requirements for each cow, we can formulate a linear programming problem.
By defining the decision variables, constraints, and objective function, we can solve the problem using linear programming techniques. The optimal solution will provide the amounts of corn feed and wheat feed to be used, as well as the corresponding cost.
Let's denote the amount of corn feed used as x (in kg) and the amount of wheat feed used as y (in kg). We want to minimize the cost, so the objective function is given by the cost per kg of corn feed multiplied by x, plus the cost per kg of wheat feed multiplied by y.
The constraints for protein and starch requirements can be expressed as follows:
For protein: 100x + 150y ≥ 650 (minimum protein requirement)
For starch: 750x + 700y ≥ 4000 (minimum starch requirement)
Additionally, we have the constraint that each cow should be fed at most 7 kg of feed per day: x + y ≤ 7.
To solve this linear programming problem, we can graph the feasible region and find the corner points. We evaluate the objective function at each corner point and determine the minimum cost.
Solving the problem, we find that the optimal feed mix is approximately 2.53 kg of corn feed and 4.47 kg of wheat feed. The corresponding cost is $3.03.
Therefore, the optimal feed mix that minimizes cost consists of using approximately 2.53 kg of corn feed and 4.47 kg of wheat feed, resulting in an optimal cost of $3.03.
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a researcher conducts an experiment comparing two treatment conditions and obtains 20 scores in each treatment. which design would require the smallest number of subjects?
Repeated-measures design would require the smallest number of subject
What is meant by Repeated-Measures design?Repeated-measures design: Repeated measures design is a research design that involves multiple measures of the same variable taken on the same or matched subjects either under different conditions or over two or more time periods. For instance, repeated measurements are collected in a longitudinal study in which change over time is assessed
given that, a researcher conducts an experiment comparing two treatment conditions and obtains 20 scores in each treatment
Repeated-measures design would require the smallest number of subjects
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An online music store sells about 4000 songs each day when it charges $1 per song. For each $0. 05 increase in price, about 80 fewer songs per day are sold. Use the verbal model and quadratic function to determine how much the store should charge per song to maximize daily revenue.
Answer:
Step-by-step explanation:
0.10 i think if its multiple choice
Find the missing dimension of the cylinder. Round your answer to the nearest hundredth.
Volume = 3000 ft³
9.3 ft
The missing dimension is about
feet.
The missing dimension (height) of the cylinder is 11.62 feet.
The formula for the volume of a cylinder is V = πr²h, where V is the volume, r is the radius, and h is the height.
Substituting the given values, we get:
3000 = π(9.3)²h
Simplifying and solving for h:
h = 3000 / (π(9.3)²)
h ≈ 11.62 feet
Thus, the missing dimension (height) of the cylinder is 11.62 feet.
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HELP IS APPRECIATED
WILL GIVE BRAINLIEST:)
Answer:
9 4/5
Step-by-step explanation:
7 1/2 + 2 3/10 = 9 8/10 = 9 4/5
The cost to make each T-shirt is $10. You estimate that you will
sell 50 shirts. If you want to make a profit of at least $250, what
price will you charge for these T-shirts? Show your solution in two
different ways.
The price per T-shirt should be at least $15 to achieve a profit of $250.
To calculate the price per T-shirt that will yield a profit of at least $250, we need to consider the cost of production, the desired profit, and the number of shirts to be sold.
Given that the cost to make each T-shirt is $10, and we want to sell 50 shirts, the total cost of production would be 10 * 50 = $500.
Now, let's calculate the minimum revenue needed to achieve a profit of $250. We add the desired profit to the total cost of production: $500 + $250 = $750.
Finally, to determine the price per T-shirt, we divide the total revenue by the number of shirts: $750 ÷ 50 = $15.
Therefore, to make a profit of at least $250, the price per T-shirt should be set at $15.
By selling each T-shirt for $15, the total revenue would be $15 * 50 = $750. From this revenue, we subtract the total production cost of $500 to calculate the profit, which amounts to $750 - $500 = $250. Thus, by charging $15 per T-shirt, the desired profit of $250 is achieved.
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Factor completely 4x^3+ 28x^2 +48x
Answer:
4x(x+3)(x+4)
Step-by-step explanation:
PLs answer this question
Answer:
49/16
Step-by-step explanation:
make the fraction into a mixed number then multiply have answer
Francisco has a cylindrical barrel 3 feet tall that he uses to collect rainwater. The barrel is not empty when rain begins to fall at a steady rate. Francisco checks the level 2.5 hours after the rain begins falling and finds that the water level in the barrel is 31.5 inches. He checks again 2.5 hours after his first check and finds that the water level is 32.5 inches. By how many inches does the water level increase for each additional hour of rainfall?
Answer:
0.4 inches per hour
Step-by-step explanation:
2.5 hrs = 31.5 in
5 hrs = 32.5
that's 1 inch in 2.5 hours
or
1/2.5 = 0.4 inches per hour
I need help with Part c).angle of elevation. 29 degrees angle of depression. 18 degrees
From the diagram, we get that the height we are looking for is h₂*0.914. To compute h₂ we notice that it is equal to the tangent of the depression angle times 31 yds.
Therefore:
\(\begin{gathered} h_2=\tan (18^{\circ})\times31\text{yds,} \\ h_2\approx10.0725\text{ yds.} \end{gathered}\)Answer: 9.21 meters.
A company sells running shoes. If the price of shoes. If the price of shoes in dollars is p the company estimates that it will sell 50,000-40p pairs of shoes. Write an expression that represents the revenue in dollars from selling running shoes if a pair of shoes is price at p dollars
Answer:
The revenue from selling a pair of running shoes at p dollars per pair is 50,000p - p^2
Step-by-step explanation:
Here in this question, we are interested in writing an equation that represents the revenue from selling a number of shoes.
Mathematically;
Revenue = Number of shoes sold * Price of one shoe
From the question, the number of shoes sold at price P dollars is 50,000 - 40p
The price of a single pair is P dollars
So the revenue in this case will be ; p * (50,000 - 40p)
= (50,000p - 40p^2) dollars
The expression that represents the revenue in dollars is \((50000p-40p^{2} )\)
Algebraic expression :We have to find an expression that represents the revenue in dollars
So that,
Revenue = Number of shoes sold * Price of one shoe
It is given that the number of shoes sold at price P dollars is \((50000 - 40p)\)
and the price of a single pair is P dollars
Thus, the revenue expression is,
\(= p * (50000 - 40p)\\\\=50000p-40p^{2}\)
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20x40 is what i need help
Answer:
800
Step-by-step explanation:
2 times 4 is 8, 20 has one zero and 40 has one zero. Just add both zeros to 8, if you know the answer to 2x4.
find the value of X, y and z
ans: x=50 y= 50 z=50
The value of x , y and z in the parallel line is 50 degrees.
How to find the angle in parallel line?When parallel lines are crossed by a transversal line, angle relationships are formed such as vertically opposite angles, alternate interior angles, alternate exterior angles, adjacent angles, corresponding angles etc.
Therefore, let's use the angle relationships to find the angle, x, y and z as follows:
Therefore,
x = 360 - 310(sum of angles in a point)
x = 50 degrees
Therefore,
x = y(alternate interior angles)
Alternate interior angles are congruent.
Hence,
y = 50 degrees
Therefore,
x = z(alternate interior angles)
z = 50 degrees.
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which two parts of the vehicle are most important in preventing traction loss
The tires and the traction control system work in tandem to ensure maximum traction and stability, minimizing the risk of traction loss and improving overall vehicle control and safety.
The two most important parts of a vehicle in preventing traction loss are the tires and the traction control system.
Tires: Tires are the primary point of contact between the vehicle and the road surface. The quality and condition of the tires greatly influence traction. Tires with good tread depth and appropriate tread pattern are essential for maintaining grip on the road. Tread depth helps to channel water, snow, or debris away from the tire, preventing hydroplaning or loss of traction. Additionally, tire pressure should be properly maintained to ensure even contact with the road. Choosing tires suitable for the specific driving conditions, such as all-season, winter, or performance tires, is crucial for optimal traction and handling.
Traction Control System: The traction control system is a vehicle safety feature that helps prevent the wheels from slipping or spinning on low-traction surfaces. It uses various sensors to monitor the speed and rotation of the wheels. If the system detects a loss of traction, it will automatically reduce engine power and apply braking force to the wheels that are slipping. By modulating power delivery and braking, the traction control system helps maintain traction and prevent wheel spin, especially in challenging conditions like slippery roads or during quick acceleration.
The tires and the traction control system work in tandem to ensure maximum traction and stability, minimizing the risk of traction loss and improving overall vehicle control and safety.
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Can a chord be a diameter?
Answer:
yes
Step-by-step explanation:
ΔABC ~ ΔEFD
Step-by-step explanation:
A diameter satisfies the definition of a chord, however, a chord is not necessarily a diameter. This is because every diameter passes through the center of a circle, but some chords do not pass through the center. Thus, it can be stated, every diameter is a chord, but not every chord is a diameter.Hope this is fine for you
1. A rectangular lot measures 12 m long and 10 m wide.
Plsss I need help !!!!
Answer:
acute
Step-by-step explanation:
Answer:
Acute triangle.
Explanation:
All sides are under 90 degrees.
A bit of help if you need it:
Acute: all sides are under 90 degrees
Right: One side is 90 degrees
Obtuse: One side is above 90 degrees
A group of students are standing in a circle. They are evenly spaced and consecutively numbered starting with 1. The student with number 5 is standing directly across from the student with number 19. How many students are standing in the circle?
Answer:
30 studentsStep-by-step explanation:
There are 19 - 5 = 14 students between the number 5 and 19, either side, so the total number is:
14 + 2 + 14 = 30 studentsWhat is
the circumference of a circle with radius 3.5cm. Take [Pi=22/7]
Answer:
22cm
Step-by-step explanation:
Circumference of a circle = 2πr
π = 22/7
r = 3.5
Circumference of a circle = 2 × (22/7) × 3.5
Circumference of a circle = 22cm.
PLEASE HELP!!! The amount of polonium-210 remaining, P(t), after t days in a sample can be modeled by the exponential function P(t) = 100e−0.006t, where 100 represents the initial number of grams in the sample. What is an equivalent expression, written as a percentage rate of polonium-210 lost, and how much polonium-210 remains (rounded to the nearest whole number) after 16 days?
Hint: Find the value of e−0.006 on your calculator. (7 points)
P(t) = 100e0.006t, 109 grams remain
P(t) = 100e0.994t, 3 grams remain
P(t) = 100(0.994)t, 91 grams remain
P(t) = 100(0.994)−t, 91 grams remain
Answer:
\(P(t)=100(0.994)^t\)
Step-by-step explanation:
A calculator shows the value of \(e^{-.006} \approx 0.994\) meaning that each day, about 99.4% of the sample remains.
The formula \(P(t)=100e^{-0.006t} = 100(e^{-0.006})^t=100(0.994)^t\)
Evaluate this at t = 16 to get 91 grams remain.
1a, b/46 = 50/23 1b. 34/d = 68/44
Answer:
1a. 100, 1b. 22
Step-by-step explanation:
1a. Given information from the question:
\( \frac{b}{46} = \frac{50}{23} \\ 23b = (50)(46) \: (cross \: multiply) \\ b = \frac{50 \times 46}{23} \\ = 50 \times 2 \\ = 100\)
1b. Given information from the question:
\( \frac{34}{d} = \frac{68}{44} \\ 68d = (34)(44) \: (cross \: multiply)\\ \\ d = \frac{34 \times 44}{68} \\ d = \frac{44}{2} \\ = 22\)
Answer:
• \(b = \bf 100\)
• \(d = \bf 22\)
Step-by-step explanation:
To solve these questions, we need to rearrange the equations to make the unknown variables the subject of the equations.
1a.
\(\frac{b}{46} = \frac{50}{23}\)
⇒ \(b = \frac{50 \times 46}{23}\) [multiplying both sides by 46]
⇒ \(b = \bf 100\)
1b.
\(\frac{34}{d} = \frac{68}{44}\)
⇒ \(34 = \frac{68 \times d}{44}\) [multiplying both sides by d]
⇒ \(34 \times 44 = 68 \times d\) [multiplying both sides by 44]
⇒ \(\frac {34 \times 44}{68} = d\) [dividing both sides by 68]
⇒ \(d = \bf 22\)
what is equivialent to 8\11
Answer:
16/22, 24/33, and 40/55
or
72.7272...% = Percentage form
0.7272... = Decimal form
Hope this helps :)
Pls brainliest...
how would you solve this equation?
Answer:
19,188
Step-by-step explanation:
hope this helps ;)