Standing next to a zipline 20 feet from the base of a cliff. You look up at the cliff as a 60 degree angle. How tall is the cliff?
Step-by-step explanation:
See image below
(1 point) an open rectangular box has volume 32 cm3 . what are the lengths of the edges giving the minimum surface area?
So, the length of open rectangle box is 4cm, width is 4cm, and height is 2cm, with Surface Area of 48cm^2.
it is an Open box, so there is no top
SA (Surface area) = 2*l*h + 2*w*h + l*w
Volume(V) = l*w*h = 32cm^3
h = 32/(w*l)
SA = 2*l*32/(w*l) + 2*w*32/(w*l) + l*w
SA = 64/w + 64/l + l*w
Find minimum SA: take partial derivatives to get critical point(s)
SAw = -64/w^2 + l
SAl = -64/l^2 + w
Both the partials have to be 0, so...
0 = -64/w^2 + l and 0 = -64/l^2 + w
64/w^2 = l
0 = -64/(64/w^2)^2 + w (plug into second equation)
0 = -w^4/64 + w
0 = w(1-w^3/64)
1 = w^3/64 or 0 = w (impossible answer)
64 = w^3
4 = w
Plug w back into 64/w^2 = l
64/4^2 = l
4 = l
Plug w and l back into h = 32/(w*l)
h = 32/(4*4)
h = 2
The Surface Area:2*l*h + 2*w*h + l*w
SA = 2*4*2 + 2*4*2 + 4*4
SA = 48
So the answer is length = 4cm, width = 4cm, and height = 2cm, with Surface Area of 48cm^2
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Which table does not represent a proportional relationship? Please give an accurate answer and explanation! thank you so much and good luck. whoever I declare brainiest gets 25 points
Answer:
the 2nd one
Step-by-step explanation:
Math for School: Practice & Problem Solving (LMS graded)
Challenge Abag contains pennies, nickels, dimes, and quarters. There are 50 coins in all of the coins, 10%
han pennies. There are 2 more nickels than pennies How much money does the bag contain?
The bag contains $4.60 in coins.
What are coins?
Let's use P, N, D, and Q to represent the number of pennies, nickels, dimes, and quarters, respectively, in the bag.
We know that the total number of coins is 50, so:
P + N + D + Q = 50
We also know that 10% of the coins are pennies, so:
P = 0.1(50)
P = 5
There are 2 more nickels than pennies, so:
N = P + 2
N = 5 + 2
N = 7
Now we can use this information to find the number of dimes and quarters. Since there are 50 coins in total, we can substitute the values we have found for P and N into the first equation:
P + N + D + Q = 50
5 + 7 + D + Q = 50
12 + D + Q = 50
D + Q = 38
We also know the values of P and N, so we can find the total value of all the coins in the bag:
Total value = (value of pennies) + (value of nickels) + (value of dimes) + (value of quarters)
Total value = (5 cents x 5) + (7 cents x 5) + (10 cents x D) + (25 cents x Q)
Total value = 25 + 35 + 10D + 25Q
We can substitute D + Q = 38 into this equation to get:
Total value = 25 + 35 + 10(D + Q)
Total value = 60 + 10(38)
Total value = 460 cents, or $4.60
Therefore, the bag contains $4.60 in coins.
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What is the meaning of sampling probability?
The sampling probability refers to the property of an element of a given population in its given probability to become a part of a sample during the drawing of a single sample.
It is a defined and distinguished technique that is based on the principle of random selection to study a certain part of a concerning population. Furthermore, in this specific method, every member of the population has the possibility of having an equal chance of being chosen for the sample.
One backlash in the field of using sampling probability is it's very time-consuming and has a higher expenditure in comparison to other methods.
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i need help with #3 & #4
Step-by-step explanation:
Q3, B
Q4, I'm not too sure about this one but I think its D
Mr. Brown has a gate that measures 65 ft by 72 ft. He needs to reinforce the gate by placing a strip of wood on the diagonal of the fence. How long will the strip of wood need to be?
Find four consecutive even integers whose sum is -4
Dont use this website
Its a sham
Becca made 2 trays of rolls and bisouits. Each tray had 12 folls and 6 biscuits. How many total rols and bisouits did Beca make?
Becca made a total of 24 rolls and 12 biscuits.
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. The result of a multiplication operation is called a product.
Becca made 2 trays of rolls and biscuits, with 12 rolls and 6 biscuits in each tray. To find the total number of rolls and biscuits, we need to multiply the number of rolls and biscuits per tray by the number of trays, and then add them together:
Total rolls = 2 trays × 12 rolls per tray = 24 rolls
Total biscuits = 2 trays × 6 biscuits per tray = 12 biscuits
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Find the value of x that makes 25x^2 + 70x + c a perfect square trinomial
The value of x that makes 25x^2 + 70x + c a perfect square trinomial is c = 1225.
To make the quadratic expression 25x^2 + 70x + c a perfect square trinomial, we need to determine the value of c.
A perfect square trinomial can be written in the form (ax + b)^2, where a is the coefficient of the x^2 term and b is half the coefficient of the x term.
In this case, a = 25, so b = (1/2)(70) = 35.
Expanding (ax + b)^2, we have:
(25x + 35)^2 = 25x^2 + 2(25)(35)x + 35^2
= 25x^2 + 70x + 1225.
Comparing this with the given quadratic expression 25x^2 + 70x + c, we can see that c = 1225.
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Find the sum of the interior angle measure of a regular polygon with 20 sides
Answer:
3240°
Step-by-step explanation:
For a regular icosagon,
sum of interior angles measure=180(n-2)°
180(20-2)
180(18)=3240°
Omar has a new debit card. He earns 1{,}8001,8001, comma, 800 reward points for spending 300300300 dollars.
At this rate, if Omar earned 600600600 reward points, how much money did he spend?
The reward of 600 points will be earned by spending the amount of $300.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that, Omar earns 800 reward points for spending 300 dollars.
The amount of money spent to earn 600 reward points will be calculated as,
800 reward points = $300 spending
1 reward point = $300 / 800 spending
600 reward point = ($300 x 600) / 800
600 reward points = $225
Therefore, the reward of 600 points will be earned by spending the amount of $300.
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What are the zeros of the function h (x) = x² + 3x - 8?
A
x = -8 and x = -2
OB
x= -8 and x = 2
cx = -2 and x = 8
OD x = 2 and x = 8
The following are the zeros for the function h (x) = x2 + 3x - 8: - x= -4 and x=2.
Describe functions.Given a collection of inputs X (domain) and a set of potential outputs Y (codomain), a function is more technically defined as a set of ordered pairings (x,y) where xX and yY with the caveat that there can only be one ordered pair with the same value of x. The function notation f:XY can be used to express that f is a function from X to Y.
The function's zero is a value of x that makes it equal to zero. In other words, the equation f(x) = 0 leads to a zero.
By putting h(x) equal to zero and figuring out x, we may determine the zeroes for the function h(x) = x2 + 3x - 8.
h(x) = x² + 3x - 8 = 0
We may factor the left side of the equation to find x:
x² + 3x - 8 = (x-2)(x+4) = 0
We set each factor to zero and solve for x to discover the zeroes:
x-2 = 0 or x+4 = 0
x = 2 or x = -4
Consequently, the function's zeros are x = 2 and x = -4.
So, A is the right response. x = -4 and x = 2
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The complete question is
What are the zeros of the function h (x) = x² + 3x - 8?
A. x = -4 and x = -2
B. x= -8 and x = 2
C. x = -2 and x = 8
D. x = 2 and x = 8
A medical equipment industry manufactures X-ray machines. The unit cost C (the cost in dollars to make each X-ray machine) depends on the number of
machines made. If x machines are made, then the unit cont is given by the function C(x) = 0. 5x? - 280x + 52,506. What is the minimum unit cost?
Do not round your answer.
The minimum unit cost amount is 17,506.
The minimum unit cost amount of the X-ray machines can be determined by taking the derivative of the cost function C(x) = 0.5x^2 - 280x + 52,506, and then setting that derivative equal to 0. This gives us an equation of x = 560. Plugging this value back into the original cost function gives us C(560) = 17,506, which is the minimum unit cost.The minimum unit cost amount of the X-ray machines can be determined by taking the derivative of the cost function C(x) = 0.5x^2 - 280x + 52,506, and then setting that derivative equal to 0.
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the symbol μ ˆ p represents the proportion of a sample of size n, not the proportion of a sample of size n. true or false
The statement ''the symbol μ ˆ p represents the proportion of a sample of size n, not the proportion of a sample of size n.'' is false because the symbol "μ ˆ p" does not represent the proportion of a sample of size n.
In statistical notation, the symbol "μ ˆ p" typically represents the sample proportion, which is an estimate of the population proportion. The sample proportion is obtained by dividing the number of occurrences of a specific event in the sample by the sample size.
On the other hand, the population proportion, denoted by "p," represents the proportion of the entire population that exhibits a certain characteristic or has a specific attribute.
The symbol "μ ˆ p" could be a typographical error or a confusion between different symbols used in statistics. The correct symbol to represent the sample proportion is usually denoted as "p ˆ" or "p-hat." The symbol "μ" typically represents the population mean.
Therefore, it is incorrect to state that "μ ˆ p" represents the proportion of a sample of size n.
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A right triangle has a rise of 16 and a run of 4. A similar right triangle with a run of 5 will have a rise of?
Answer:
It will have a rise of 20.
Step-by-step explanation:
We can use ratios:
Rise : Run = 16 : 4 = 4 : 1 = 20 : 5
Hope this helps!
What is a good way for a student to get into study mode?
A.
Always study with a group of friends.
B.
Vary your study patterns to stop boredom.
C.
Always study the same topics.
D.
Always study in the same place.
Answer: A. Always study with a group of friends
Step-by-step explanation:
just had that same question and im 100% right ; )
what does most specifically describe? a. a minor arc b. a major arc c. a semicircle d. a chord
The term "most specifically" is used to indicate the option that is the most specific or narrowest in meaning among the choices is d. chord.
The term "most specifically" is used to indicate the option that is the most specific or narrowest in meaning among the choices. Let's examine each option in the context of geometry:
a. A minor arc: A minor arc is a portion of a circle that measures less than 180 degrees. It is not the most specific term because it encompasses a range of arc sizes smaller than a semicircle, but it does not provide a narrower definition than other options.
b. A major arc: A major arc is a portion of a circle that measures more than 180 degrees. Similar to a minor arc, it does not provide the narrowest definition among the options.
c. A semicircle: A semicircle is a half of a circle, dividing it into two equal halves. This option is more specific than both minor and major arcs because it refers to a precise geometric shape with a 180-degree angle. However, there is one more option left to consider.
d. A chord: A chord is a straight line segment that connects two points on a circle. It is the most specific option among the choices because it refers to a specific geometric element—a line segment—within a circle.
So, The option that most specifically describes a geometric concept is:d. a chord.
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A(n) _________ is a statistical relationship between two variables, such that knowing one of the variables makes it possible to predict the other.
A correlation is a statistical relationship between two variables, such that knowing one of the variables makes it possible to predict the other.
What is correlation?A correlation can be defined as the relationship that exists between two variables when one of them is related to the other in some way.
It is also a measure that expresses the extent to which two variables are closely or linearly related which entails that they change together at a constant time.
Hence, correlation is a statistical relationship between two variables, such that knowing one of the variables makes it possible to predict the other.
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What is the slope of the line?
Answer:
In technical terms, the slope of the line is the change in y over the change in x. But I just like to think of it as rise over run. To find the slope of the line, pick two points on the line.
Help! Find x, y, z
Worth 20 points
Answer:
x= 113
y= 67
z= 49
Step-by-step explanation:
a triangle equals to 180° so lets start with the triangle that has two given degrees
28 + 39 + x = 180 solve
x = 113
no we can find y by using x + y = 180 since it's a straight line
we know the value of x so 113 + y = 180. solve.
y= 67
now do the same thing we did from the start since we have two given degrees on the other triangle.
67 + 64 + z = 180
z= 49
A police car is located 60 feet on a small straight road perpendicular to main highway. A red car is driving along a highway in the direction of an intersection with that small road and is 90 feet away from the intersection. The police radar reads that the distance between the police car and the red car (this distance is straight between them - not on either road) is decreasing at a rate of 75 feet per second.
Required:
How fast is the red car actually traveling along the road?
According to the question The rate at which the red car is actually traveling along the road is \($\frac{(90)(75)}{t}$\) ft/s.
Let's denote the distance between the police car and the red car as \($d$\), and let \($t$\) represent time. We are given that the distance between the two cars is decreasing at a rate of 75 feet per second, so we can express this
as \($\frac{dd}{dt} = -75$\) ft/s.
Using the Pythagorean theorem, we can relate the distances \($d$, $x$\), and \($y$\), where \($x$\) is the distance traveled by the red car along the highway and \($y$\) is the distance traveled by the red car along the small road. We have \($x^2 + y^2 = d^2$\).
Differentiating both sides of the equation with respect to time \($t$\), we get \($2x\frac{dx}{dt} + 2y\frac{dy}{dt} = 2d\frac{dd}{dt}$\).
Since the police car is located 60 feet on the small road perpendicular to the highway, we have \($x = t$\) and \($y = 60$\) . Substituting these values and the given rate of change of \($d$\) , we can solve for \($\frac{dx}{dt}$\) :
\($2t\frac{dx}{dt} + 2(60)\frac{dy}{dt} = 2(90)(-75)$\)
\($2t\frac{dx}{dt} = -2(90)(-75) - 2(60)\frac{dy}{dt}$\)
\($2t\frac{dx}{dt} = 2(90)(75) - 2(60)(0)$\)
\($2t\frac{dx}{dt} = 2(90)(75)$\)
\($t\frac{dx}{dt} = (90)(75)$\)
\($\frac{dx}{dt} = \frac{(90)(75)}{t}$\)
Therefore, the rate at which the red car is actually traveling along the road is \($\frac{(90)(75)}{t}$\) ft/s.
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what is the value of (-2)^6 ?
Answer:
64
Step-by-step explanation:
Answer:
-64 would be the answer
Graph negative 3.5 and negative 1.5 on the number line
The required graph has been attached which represents negative 3.5 and negative 1.5 on the number line.
What is Number Line?To indicate their position, all rational numbers can be plotted on a number line. Every point on the number line indicates how many units a number is away from zero and in which direction.
As per the question, the negative 3.5 placed on the number line is 3.5 units to the left of zero, and the negative 1.5 placed on the number line is 1.5 units to the left of zero. The number zero is the most essential position on the number line. All of the other locations on the number line are predicated on zero.
Thus, the required graph has been attached which represents negative 3.5 and negative 1.5 on the number line.
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\(\sqrt{25} is an irrational
Answer:
Is Square Root of 25 Rational or Irrational?
Step-by-step explanation:
A rational number can be expressed in the form of p/q. Because √25 = 5 and 5 can be written in the form of a fraction 5/1. It proves that √25 is rational.
The answer is:
⇨ √25 is a rational numberWork/explanation:
What are rational numbers?
Rational numbers are integers and fractions.
Irrational numbers are numbers that cannot be expressed as fractions, such as π.
Now, \(\bf{\sqrt{25}}\) can be simplified to 5 or -5; both of which are rational numbers.
Hence, √25 is rational.which statements are true? select three options. and are parallel. and are parallel. and are perpendicular. and must intersect. lies in plane x. lies in plane x.
The true statements are, Line A B and Line C G are parallel, Line C G and Line R S are perpendicular, Line A B and Line R S must intersect and Line segment C G lies in plane X.
Given that Planes X and Y intersect at a right angle. Line AB and CG are on plane X, while line RS is on plane Y. Therefore, line CG lies on plane X.
Since both line AB and CG lie on the same plane, they are parallel to each other.
Since plane X and plane Y are perpendicular to each other and line CG is on plane X while line RS is on plane Y, this means that Line CG and Line RS are perpendicular to each other.
Line AB and Line RS may or may not intersect. They could be skew lines, which do not intersect and are not parallel.
Line segment CG lies on plane X since it is contained within the plane that contains points C, G, and either A or B.
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The question is -
Which statements are true? Select three options.
a. Line A B and Line C G are parallel.
b. Line A B and Line R S are parallel.
c. Line C G and Line R S are perpendicular.
d. Line A B and Line R S must intersect.
e. Line segment C G lies in plane X.
f. Line segment R S lies in plane X.
Answer: ace
Step-by-step explanation:
need help with this i genuinely dont get this whole lesson
Answer:
top left
Step-by-step explanation:
If you look at both equations they both have 2x in them. This makes it easier to eliminate x. To eliminate x we must subtract the second equation from the first (because 2x - 2x = 0).
A computer coast $800 it loses 1/5 of its value every year after it’s purchased complete the table after how many years will the computer be worth less than $100 _____ years write an equation representing the value v of the computer t years after it was purchased
Answer: 6
Step-by-step explanation:
Each year it will lose $160. So v=160
what is the value of A in 34×A=100
Answer:
A = 2.94
Step-by-step explanation:
You need to isolate the variable. This can be done by performing the same operation to each side to eliminate the unwanted term. In this case, you should divide both sides by 34. This removes the 34 from the left side while also doing the same thing to both sides of the equation.
When you divide 34 from 100, you are left with 2.94 on the right side. Because the only thing on the left side is the variable, this would be your answer.
Need the answers for A and B
The sοlutiοn οf the given prοblem οf interest cοmes οut tο be Reh will pay abοut $3,944 in interest fοr the duratiοn οf his lοan.
What dοes interest actually mean?Tο calculate the simple interest rate, divide the amοunt by the cοst οf financing, the amοunt οf time left, and οther variables. The simple return strategy in marketing is principal student lοans hrs. This methοd is the mοst basic methοd fοr figuring οut invοlvement. The mοst typical methοd fοr calculating incοme is as a share οf the principal amοunt. Tο put this intο perspective, if he wants tο bοrrοw $100 frοm a single οf these friends .
Here,
a. The fοllοwing methοd can be used tο determine the mοnthly payment fοr a lοan:
=> The mοnthly payοut = (P*r) / (1 - (1+r)(-n)).
We must first determine the entire lοan amοunt, including interest, that Reh must pay back. After 4.5 years οf interest accrual, the lοan sum is:
=> \(9900 \times (1 + 0.0429/12)^{(12 \times 4.5)\) = 12,723.97
The οverall debt balance is $12,723.97.
The numbers can then be entered intο the fοrmula as fοllοws:
=> (12723.97*(0.0429/12)) / (1 - (1+(0.0429/12))(-12*10))
is the fοrmula fοr the mοnthly payοut.
Payment due each mοnth: $131.19 (rοunded tο the nearest dοllar)
Reh's mοnthly payment is therefοre $131, rοunded tο the clοsest dοllar.
b. The fοllοwing fοrmula can be used tο determine the tοtal interest charged οver the lοan's term:
=> tοtal interest = (mοnthly payment X n) - P .
There have been a tοtal οf:
=> 120 is equal tο ten years times οne year.
The entire interest paid is thus:
=> ($3,943.80) (tοtal mοnthly installments * n) - P
=> (131.19 * 120) - 9900 (rοunded tο the nearest dοllar)
Sο, rοunded tο the clοsest dοllar, Reh will pay abοut $3,944 in interest fοr the duratiοn οf his lοan.
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