Standing 8 feet from a puddle of water on the ground Gretchen whose eye height is 5 feet 2 inches can see reflection of the top of a flagpole the puddle is 20 feet from the flagpole how tall is the flagpole
The height of the flagpole in this problem is calculated as follows:
12.9 feet.
How to obtain the height of the flagpole?The height of the flagpole in this problem is obtained using similar triangles, as shown by the image given at the end of the answer.
Similar triangles are used because the equivalent sides have proportional side lengths.
From the image given at the end of the answer, the equivalent sides of each triangle are given as follows:
8 ft and 20 ft.5 and 2/12 ft and x ft. (2/12 is because one feet = 12 inches, x feet is the height of the pole).Then the proportional equation is given as follows:
8/20 = 5.1667/x
Applying cross multiplication, the height of the flagpole is calculated as follows:
8x = 20 x 5.1667
x = 20 x 5.1667/8
x = 12.9 feet.
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Can someone help me plz
Answer:
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The number of jelly beans placed in jars by a class of kindergarteners is normally distributed with an unknown population
mean and standard deviation. A random sample of 20 jars is taken and results in a sample mean of 43 jelly beans and
sample standard deviation of 6 jelly beans.
Using the t-distribution, the 80% confidence interval for the mean number of jelly beans is (41.22, 44.78).
What is a t-distribution confidence interval?The confidence interval is:
\(\overline{x} \pm t\frac{s}{\sqrt{n}}\)
In which:
\(\overline{x}\) is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.The critical value, using a t-distribution calculator, for a two-tailed 80% confidence interval, with 20 - 1 = 19 df, is t = 1.3277.
The other parameters are given as follows.
\(\overline{x} = 43, s = 6, n = 20\).
Hence, the bounds of the interval are given by:
\(\overline{x} - t\frac{s}{\sqrt{n}} = 43 - 1.3277\frac{6}{\sqrt{20}} = 41.22\)
\(\overline{x} - t\frac{s}{\sqrt{n}} = 43 + 1.3277\frac{6}{\sqrt{20}} = 44.78\)
The 80% confidence interval for the mean number of jelly beans is (41.22, 44.78).
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In triangle ABC, AB = 6, BC = 8, and angle ABC = 90 degrees. Find the area of triangle ABC.
Answer:
24
Step-by-step explanation:
The formula for area of any triangle is (length * width) * 1/2. This makes the angle of 90 degrees irrelevant.
6 x 8 = 48
48 / 2 = 24
What is the product?
(-202+5)(502-65)
O-1004+17025-652
-1004+170452-652
0-1004-7029-682
0-1004 +1702S+682
9514 1404 393
Answer:
(a) -10d^4 +17d^2s -6s^2
Step-by-step explanation:
Use the distributive property to eliminate parentheses, then collect terms.
\((-2d^2+s)(5d^2-6s)=-2d^2(5d^2-6s)+s(5d^2-6s)\\\\=(-2d^2)(5d^2) +(-2d^2)(-6s)+s(5d^2)+s(-6s)\\\\=-10d^4+12d^2s+5d^2s-6s^2\\\\=\boxed{-10d^4+17d^2s-6s^2}\)
Solving by fractions
Answer:
x = -8, 8
Step-by-step explanation:
Set y = 0 to find the x intercepts
0 = x^2 -64
Add 64 to each side
64 = x^2
Take the square root of each side
±sqrt(64) = sqrt(x^2)
±8 =x
Solve for x. Round to the nearest tenth.
Answer:
x = 4.55
Step-by-step explanation:
Tan(75) = 17/x
3.73 = 17/x
x3.73 =17
x = 4.55
Line 1 passes through the points (-20, -4) and (-11,-4).
Line 2 is perpendicular to Line 1 and passes through the
point (-17, -14).
What is the equation of Line 2?
something noteworthy is that, the y-coordinate for Line 1 is the same, well that simply means that Line 1 is a horizontal line, anything perpendicular to a horizontal line is simply a vertical line, Check the picture below.
Casey buys a bracelet. She pays for the bracelet and pays $0.72 sales tax. The sales tax rate is 6%, percent.
What is the original price of the bracelet, before tax?
Answer:
12$
Step-by-step explanation: 100/6 then multiply it by .72=12$
Answer
$12
Step-by-step explanation:
theres a picture on how I did it that I linked.
if a car travels at a constant speed of 45km/hr how long will a journey of 270km take?
Answer:
I think the answer is "6" but I could be wrong.
3.) Find the volume of a triangular prism with a length
of 5 units, a width of 6 units, and a height of 4 units.
Answer:
Volume V = 18.735 m3
Step-by-step explanation:
hope this helps
Divide. 24.64 ÷ 5.6 Enter your answer, as a decimal, in the box.
MAKES
Find the volume of the circular cylinder.
3. Circular Cylinder
5 mm
2 mm
The volume of the circular cylinder be,
⇒ 62.8 mm³
Given that,
For a circular cylinder,
Height = 5 mm
Radius = 2 mm
Then we have to find the volume of this circular cylinder
Since we know that,
The right circular cylinder is a cylinder with circular bases that are parallel to each other. It's a three-dimensional form. The axis of the cylinder connects the centers of the cylinder's two bases.
This is the most frequent sort of cylinder encountered in daily life. The oblique cylinder, on the other hand, does not have parallel bases and resembles a skewed construction.
volume of circular cylinder = πr²h
Here we have,
r = 2 mm
h = 5 mm
Now put the values into the formula we get,
Volume = π x 2² x 5
= 62.8 mm³
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Sean's father decided that the number of hours Sean should study daily is equal to the equation y + 4 16. where y is the
number of study hours and z is the number of relaxation hours. Sesn's mother believes that the number of hours Sean should study
dally should be equal to the equation 2y + 5z = 32. Sean's parents have decided to use both equations to determine the number
of hours Sean should study and relax What is an equivalent equation to the addition of Sean's mother's equation and Sean's father's
equation? Select all that apply.
Answer and explanation:
We add both equations to get a simultaneous equation
y+4z=16
2y+5z=32
We solve the equations using elimination method:
Multiply equation 1 by 5 and equation 2 by 4 to cancel out z
5y+20z=80
8y+20z=160
-3y=-80
Y=26.7
Substitute y=26.7 in equation 1
26.7+4z=16
4z=16-26.7
z= -2.67
y+z=26.7+(-2.67)= 24.03
Lisa is making a quilt that uses a pattern of triangles like the one shown. Write an equation that represents the missing side length if the perimeter is 19 centimeters, 3 cm pls help .
The length of the missing side of the triangle is 6 cm.
Triangle
A triangle is a polygon with three sides and three angles. Types of triangles are isosceles, equilateral, obtuse and scalene triangle.
The perimeter of a triangle is the sum of all the sides of the triangle. Let x represent the missing length. Also, let the other sides be 3 cm and 10 m.
Hence:
Perimeter = x + 3 + 10
19 = x + 13
x = 6 cm
The length of the missing side of the triangle is 6 cm.
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he volume of a rectangular prism is cubic units, and the base area of the prism is square units. The height of the rectangular prism is
what is the length of AB? A(-1,5), B(2,-4)
Answer:
3 sqrt(10)
Step-by-step explanation:
To find the distance, we use the formula
d = sqrt( ( x2-x1)^2 + (y2-y1)^2)
= sqrt( ( 2- -1)^2 + ( -4-5)^2)
= sqrt( (2+1)^2 +(-4-5)^2)
= sqrt( 3^2 +(-9)^2)
= sqrt( 9+81)
= sqrt(90)
= sqrt ( 9*10)
3 sqrt(10)
How many grams is 6 ounces?
Answer:
170.097
Step-by-step explanation:
1 ounce = 28.3495 grams.
28.3495 x 6 = 170.097
Answer:
170.097 grams Mark me as brainliest!!!!
Step-by-step explanation:
If a polynomial function has integer coefficients, then every rational zero of the function has the form p/q, where p is a factor of the ? and q is a factor of the ?
If a polynomial function has integer coefficients, the every rational zero of the function has the form p/q, where p is a factor of the constant term and q is a factor of the leading coefficient.
The rational zero theorem says that if a polynomial has integer coefficients then any rational zeros must be of the form p/q where p is the factor of the constant term and q is the factor pf the leading coefficients.
The rational zero theorem is used to determine the rational roots of a polynomial function.
Rational Zero Theorem statement:-
The rational zero theorem states that each rational zero(s) of a polynomial wit integer coefficients
f(x) = anxⁿ + an-1xⁿ⁻¹ + ... + a₂x² + a₁x + a₀ is of the form p/q where,
p is a factor of the constant a₀,
q is a factor of the leading coefficient an,
and p and q are relatively prime.
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ASSIGNMENT Question
A steel tape of nominal length \( 30 m \) was use d to measure a line AB by suspending it between supports. The following measurements were recorded Line. AB length measured 29.872 Slope angle 3.67° Mean temperature 5° Tension applied 120N The standardized length of the tape against reference tape was known to be 30.14m at 20°and 50.. if the tape weight 0.17Nm–¹ and has a cross sectional area of 2mm¹.. calculate the horizontal length of AB..young's modulus(E) for the tape 200knmm–² and the coefficient of thermal expansion (a) is 0.0000112 per °C
Step-by-step explanation:
That depends on the tension on the tape.
As defined, the tape, due to gravity would form a catenary, a curve, so the measurement would be less than 30 m. The tension on the tape would affect the degree to which the measurement would be less. A tension well within the limits of the steel used to make the tape would be would be well within the accuracy of the tape. Over 30 m, the tape is likely +/- 2 mm, the recorded value could be 30m, +1mm/-3mm. If you need more than that degree of accuracy, you don’t use a tape.
What is the union of the union of two sets and the intersection of these two sets?
The union of the sets is the union of these two sets
Ex.
Set 1: {1, 2, 3}
Set 2: {2, 3, 4}
Intersection: {2, 3}
Union: {1, 2, 3, 4}
So, the union of the (intersection and union) is:
{1, 2, 3, 4} which is simply the initial union of these two sets.
The required union of the union of two sets (A ∪ B) and the intersection of these two sets (A ∩ B) is simply A ∪ B.
What is set?Sets are an orderly collection of items in mathematics that can be expressed in set-builder or roster form.
Let A and B be two sets. Then, the union of A and B is the set of all elements that are in A or in B or in both. We denote this by A ∪ B.
The intersection of A and B is the set of all elements that are in both A and B. We denote this by A ∩ B.
Now, to find the union of the union of two sets (A ∪ B) and the intersection of these two sets (A ∩ B), we can use the following formula:
(A ∪ B) ∪ (A ∩ B) = A ∪ B
The reason for this is that the intersection of A and B is a subset of both A and B, so it is also a subset of their union (A ∪ B). Therefore, taking the union of (A ∪ B) and (A ∩ B) just gives us A ∪ B again.
So, the union of the union of two sets (A ∪ B) and the intersection of these two sets (A ∩ B) is simply A ∪ B.
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The scale of a map is 1:100. what area does 1 cm² on the map represent? what area does 6 cm² represent?
Which of the following expressions are equal to -58?
Answer:
-78-(-34)+(-14)
Step-by-step explanation:
-78+(+34)+(-14)
-78-14
-92+34
-58
And thats the answer needed there for it would be the last expression.
Find the equation of the line that contains the given point and is perpendicular to the given line. Write the equation in slope-intercept form, if possible. (6,2); 3x−2y=7 please help me with this, it’s due tomorrow!!?
The equation of the line is passing through a point (6, 2) and is perpendicular to the line 3x-2y = 7 is y = -2x/3 + 8
What is slope-intercept form?The slope intercept formula y = mx + b is used when you know the slope of the line to be examined and the point given is also the y intercept (0, b). In the formula, b represents the y value of the y intercept point
Given that, a line is passing through a point (6, 2) and is perpendicular to the line 3x-2y = 7, we need to find the equation of the line,
The line is
3x-2y = 7
Converting into slope-intercept form,
3x-2y = 7
2y = 3x - 7
y = 3x/2 - 7/2
We know that, the slopes of two perpendicular lines are negative reciprocal of each other,
Therefore, the slope of the asked line = -2/3
Therefore, the equation of the asked line is, y = -2x/3 + c....(I)
Put x = 6 and y = 2 in equation to find c,
2 = -4 + c
c = 8
Therefore, put c = 8 in equation (i)
y = -2x/3 + 8
Hence, the equation of the line is passing through a point (6, 2) and is perpendicular to the line 3x-2y = 7 is y = -2x/3 + 8
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thank you for helping
Answer: TRS is congruent to CSE
Step-by-step explanation:
You can find congruent angles by locating the ones with the same number of lines. You want to start with the angles in the order of TRS.
Angle T has 1 line, so is congruent to C, which also has 1 line.
Angle R has 2 lines, so is congruent to S, which also has 2 lines.
Angle S has 3 lines, so is congruent to E, which also has 3 lines.
You want to keep these in the same order, so TRS, in the order of 1-2-3 lines, is congruent to CSE, also in the order of 1-2-3 lines (aka congruency markings).
Estimate the amount of time it takes to swim 16 laps.
Answer:
I said it 2 million times and I will say it again. LACK OF INFORMATION.
what is -15+n=-9 plz help
Answer:
n = 6
General Formulas and Concepts:
Pre-Alg
Order of Operations: BPEMDASEquality PropertiesStep-by-step explanation:
Step 1: Define equation
-15 + n = -9
Step 2: Solve for n
Add 15 to both sides: n = 6Step 3: Check
Plug in n to verify it's a solution.
Substitute: -15 + 6 = -9Add: -9 = -9For each graphically defined function below, state the domain, the range, and the intervals over which the function is increasing, decreasing, or constant.
The domain of the function above is [-2, 3].
The range of the function above is [-2.5, 2].
The intervals over which the function is increasing is [-2, 1.5] U [-2.5, 2].
The intervals over which the function is decreasing is [1.5, -2.5].
What is a domain?In Mathematics and Geometry, a domain refers to the set of all real numbers for which a particular function is defined.
Furthermore, the vertical extent of any graph of a function represents all range values and they are always read and written from smaller to larger numerical values, and from the bottom of the graph to the top.
By critically observing the graph of this rational expression (function) shown in the image attached below, we can reasonably and logically deduce the following domain and range:
Domain = [-2, 3] or -2 ≤ x ≤ 3.
Range = [-2.5, 2] or -2.5 ≤ y ≤ 2.
Additionally, the intervals over which the function is increases over the interval [-2, 1.5] and [-2.5, 2], while it decreases over the interval [1.5, -2.5].
In conclusion, the given function is not constant over any interval.
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giving brainliest !! *easy*
Answer:
This is not collage level, its middle school level lol
Step-by-step explanation:
please help me please really need help please
Answer:
x=0
Step-by-step explanation: