An airplane pilot over the Pacific sights an atoll at the angle of depressionof 5º. At this time, the horizontal distance from the airplane to the atoll is4,535 meters. What is the height of the plane to the nearest meter?
Answers
Answer:
397 meters
Explanation:
Let us draw a diagram to understand the situation better.
Where H is the height of the plane.
Now the tan ratio for 5° gives
[tex]\tan 5^o=\frac{opposite}{\text{adjacent}}[/tex]Since opposite = H and adjacent = 4535 meters, the above gives
[tex]\tan (5^o)=\frac{H}{4535}[/tex]Multiplying both sides by 4535 gives
[tex]\tan (5^o)\times4535=H[/tex]Since tan(5°) =0.0875.., ( just used a calculator to find out) the above becomes
[tex]0.0875\times4535=H[/tex][tex]H=396.8125[/tex]rounding to the nearest meter gives
[tex]\boxed{H=397.}[/tex]
Related Questions
I don’t really know if the lines are parallel an explanation would be helpful thanks
Answers
ANSWER
Line K is not parallel to line L.
EXPLANATION
The two angles given are alternate exterior angles. When a line crosses two parallel lines, the alternate exterior angles always sum up to 180 degrees.
So, to confirm if line L is parallel to line K, we check to see if the two given angles sum up to 180 degrees:
[tex]\begin{gathered} 122+68 \\ \Rightarrow190\degree \end{gathered}[/tex]Since they don't sum up to 180 degrees, Line K is not parallel to line L.
Which option shows a DISCRETE data set? >>> CORRECT ANSWER: The NUMBER OF CARS that I pass through an intersection EVERY HOUR. >> Why is this discrete? Your answer
Answers
Discrete measure:
Assumes countable values. For example, 0, 1, 2, 3,...
It does not assume decimal numbers, for example 2.5. There is not half a car, so the number of cars will always be a discrete measure.
Convert the following: 253 mm to m. ANS. _______ m
Answers
253mm is read 253 Millimeter.
'Milli" is a sub-multiple that has a value of:
[tex]10^{-3}[/tex]Thus, 253mm is
[tex]253\times10^{-3}m[/tex]Expressing this in standard form, it becomes:
[tex]2.53\times10^{-1}m[/tex]To Decimal places, it is;
[tex]0.253[/tex]14. Sarah draws the following array to solve 49 X 56. What values can be 50 6 determined by this array? 40 9 A 2,000; 240; 450; 54 T B. 2,000; 240; 45; 54 c. 200; 240; 450; 54 ; D. 200; 240; 45; 54
Answers
From the given figure we have 4 different tills
First till has dimensions 50 x 40, then
First till = 50 x 40 = 2000
Second, till has dimensions 6 x 40, then
Second till = 6 x 40 = 240
Third, till has dimensions 9 x 50, then
Third till = 9 x 50 = 450
Fourth till has dimensions 6 x 9, then
Fourth ti;; = 6 x 9 = 54
Then the values that can be determined by the array are
2000, 240, 450, 54
The answer is A
12. Given that a || b, what is the value of x? (The fiş290ToI41°5
Answers
Ok, so
Here we have the following figure:
We know that both segments are parallel and we want to find the value of x.
For this, remember that the value of x will be the sum of the other two angles:
[tex]\begin{gathered} x=29+41 \\ x=70 \end{gathered}[/tex]This is:
Given the following figure:
The value of x can be find using the following equation:
[tex]x=a+b[/tex]Given K is the midpoint of line segment CR, line segment MA bisects angle CMR. conclusion?
Answers
From the given image, on which you have that MA bisect angle CMR, you can conclude:
- Inside the parallelogram ACMR you have four congruent triangles.
- Angles MKR and CKA are congruent, that is, these angles have the same measure.
- Angles CKM and AKR are congruent.
I have to find the length of x but I need guidance
Answers
Since we are dealing with a right triangle, we can use trigonometric identity below
[tex]\begin{gathered} sin\theta=\frac{O}{H} \\ \theta\rightarrow\text{ interior angle} \\ O\rightarrow\text{ opposite side to}\theta \\ H\rightarrow\text{ hypotenuse} \end{gathered}[/tex]Therefore, in our case,
[tex]\begin{gathered} sin(45\degree)=\frac{5}{x} \\ \Rightarrow x=\frac{5}{sin(45\degree)}=\frac{5}{\frac{1}{\sqrt{2}}}=5\sqrt{2} \end{gathered}[/tex]Thus, the answer is x=5sqrt(2), the second optionHi, im in college and I need help with this here please. Thanks
Answers
The solution of given equations are -4 and 1. The solution of an equation is plotted on the graph.
The given equations are M(d)=2x²+8x-4 and R(d)=2x+4.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Given, the revenue of each item is same.
That is, M(d)=R(d)
⇒ 2x²+8x-4=2x+4
⇒ 2x²+8x-4-2x-4=0
⇒ 2x²+6x-8=0
⇒ 2x²+8x-2x-8=0
⇒ 2x(x+4)-2(x+4)=0
⇒ (x+4)(2x-2)=0
⇒ x=-4 and x=1
Therefore, the solution of given equations are -4 and 1. The solution of an equation is plotted on the graph.
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I need 5 points. the vertex, 2 to the left, and 2 to the right
Answers
Graph the parabola
[tex]\begin{gathered} y=x^2-10x+27 \\ f(x)=ax^2+bx+c \end{gathered}[/tex]In order to find the vertex (h,k), we can use this formula
[tex]\begin{gathered} h=\frac{-b}{2a} \\ k=f(h) \end{gathered}[/tex]where,
a = 1
b = -10
c = 27
then, the vertex (h,k) is
[tex]\begin{gathered} h=-\frac{-10}{2\cdot1}=\frac{10}{2}=5 \\ k=f(5)=5^2-10\cdot5+27=25-50+27=2 \end{gathered}[/tex]Therefore, vertex is the point (h,k) = (5,2)
Now, we just need two points to the left and two points to the right of this point
for example, when x = 3, then y = 6
[tex]f(3)=3^2-10\cdot\: 3+27=6[/tex]when x = 4, then y = 3
[tex]f(4)=4^2-10\cdot\: 4+27=3[/tex]when x = 6, then y = 3
[tex]f(6)=6^2-10\cdot\: 6+27=3[/tex]when x = 7, then y = 6
[tex]f(7)=7^2-10\cdot\: 7+27=6[/tex]Thus, the set of 5 points is the following:
[tex](3,6),(4,3),(5,2),(6,3),(7,6)[/tex]For the given functions f and g, find theindicated value.F(x) = x2+ 3x, g(x) =× + 2(f . g) (4)
Answers
Given:
[tex]\begin{gathered} f(x)=\text{ x}^2\text{ + 3x} \\ g(x)\text{ = x + 2} \end{gathered}[/tex]Required:
[tex](f\text{ .g\rparen\lparen4\rparen}[/tex]Recall that:
[tex](f.g)(x)\text{ = f\lparen x\rparen. g\lparen x\rparen}[/tex]Substituting we have:
[tex]\begin{gathered} (f.g)(x)=\text{ \lparen x}^2\text{ + 3x\rparen\lparen x+2\rparen} \\ (f.g)(4)\text{ = \lparen4}^2\text{ + 3\lparen4\rparen\rparen\lparen4 + 2\rparen} \\ =\text{ 28 }\times6\text{ } \\ =\text{ 168} \end{gathered}[/tex]Answer: 168
Based on the graph, what are the solutions of theequationx^3 - 6x^2 + 9x = 0?x = 3x= -3,0 x = 0,3 x = -3, 0,3
Answers
SOLUTION
The image of the graph is giving below
Based on the graph above, the solutions of the equation is at the point where the curve touches the x-axis
Hence the solution to the equation
[tex]x^3-6x^2+9x=0[/tex]is
[tex]undefined[/tex]Therefore the third option is correct
Every 3 months, homeowners in boice pay $46.00 for service provided by the city. how much do homeworkers pay in one year? (1 year = 12 months)
Answers
We were told that in every 3 months, homeowners in boice pay $46.00 for service provided by the city.
Given that there are 12 months in a year, the number of 3 months in a year would be
12/3 = 4
This means that $46 would be paid 4 times in a year.
Thus, the amount that the homeworkers would pay in a year is
4 * 46 = $184
The Census Bureau reports that 82% of Americans over the age of 25 are high school graduates. A survey of randomly selected residents of certain county included 1400 who were over the age of 25, and 1120 of them were high school graduates.(a) Find the mean and standard deviation for the number of high school graduates in groups of 1400 Americans over the age of 25. Mean = Standard deviation =(b) Is that county result of 1120 unusually high, or low, or neither?
Answers
Is that county result of 1120 unusually high, low, or neither?
1148 - 2(14.37) = 1119.26
It is neither as it is within 2 standard deviation from the mean 1148.
Determine the slope (m) and y-intercept (b) of the line:y = 2x - 3A) m = 3, b = 2B) m = 2, b = -3C) m = -3, b = 2D) m = 2, b = 3
Answers
slope of line(m) = 2 and intercept on y axis is -2 that is 2 unit in negative y axis.
Equation of line in slope intercept form:
Slope:
Slope is known as tangent of an angle made by positive X-axis.
We know equation of line in slope and intercept form is,
y = mx + b
where,
m is slope of line
b is intercept on y axis
hence for the given equation,
y =2x - 3
slope (m) will be = 2
intercept on y axis (b) = -3
thus,
option (B) will be correct.
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A circular garden with a radius of 4 ft is planted in the center of a 10 ft square. The part of the square that is NOT the garden is covered with small white rocks. what is the area of the region covered with white rocks?
Answers
First, draw a diagram to visualize the situation:
The area of the region covered with small rocks can be found by subtracting the area of the circle from the area of the square.
The area A_s of a square with side L is given by:
[tex]A_s=L^2[/tex]And the area A_c of a circle with radius r is given by:
[tex]A_c=\pi r^2[/tex]Replace r=4ft and L=10ft into the equations to find the area of the circle and the square:
[tex]\begin{gathered} A_s=(10ft)^2=100ft^2 \\ A_c=\pi(4ft)^2=16\pi ft^2\approx50.265ft^2 \end{gathered}[/tex]Finally, subtract the area of the circle from the area of the square to find the area of the region covered with rocks:
[tex]A=A_s-A_c=100ft^2-16\pi ft^2\approx49.7ft^2[/tex]Therefore, the area of the region covered with rocks is exactly 100-16π square feet, which is approximately equal to 49.7 square feet.
20. A fast food restaurant estimates the cost of making hamburgers to be $2.05 per hamburger plus an additional cost of $2,000 for facility expenses. If $13,025 represents the total cost of making x hamburgers, which equation can be used to find the number of hamburgers produced?A. 13,025=2.05+2,000 xB. 13,025=2.05 x+2,000C. 13,025 x=2.05+2,000D. 13,025=2.05+2000 x
Answers
Answer:
(B)13,025=2.05x+2,000
Explanation:
The cost of making one hamburger = $2.05
The cost of making two hamburgers = $2.05 x 2
Therefore:
The cost of making x hamburgers = $2.05x
Since there is an additional cost of $2,000 for facility expenses.
The total cost will be:
[tex]2.05x+2000[/tex]If $13,025 represents the total cost of making x hamburgers, then:
[tex]13,025=2.05x+2000[/tex]This is the equation that can be used to find the number of hamburgers produced.
The correct choice is B.
please help! i’ll give points.
Answers
Answer:
87
Step-by-step explanation:
112+74=186
360-186=174
174/2=87
A section of a quilt is shaped like a parallelogram.What is the minimum amount of fabric that is needed to cover this section completely? A 13 Square InchesB 17 Square InchesC 21 Square InchesD 26 Square Inches
Answers
The area of a parallelogram is computed as follows:
A = b*h
where b is the base and h is the height.
From the picture, the base is: 2 + 4.5 = 6.5 inches, and the height is 4 inches. Then its area is:
A = 6.5*4 = 26 square inches
Given this super-sized board (16x16), what integer lengths are possible for slanted segments? Use the line tool to sketch them (using a different color for each one). Label each length. Then describe how you found them.
Answers
A way to find integer line segments is using Pythagorean triples, that is, positive integers that are consistent with the Pythagorean theorem, for example, (3,4,5) because we have
[tex]3^{2^{}}+4^2=5^{2^{}}[/tex]therefore, they can be put in a triangle like this
Therefore, the slanted segment would have a length of 5. That can be done with other Pythagorian triples like (5,12,13) or (8,15,17).
Please answer correctly! Giving brainliest!
Describe in words where cube root of 30 would be plotted on a number line.
Between 3 and 4, but closer to 3
Between 3 and 4, but closer to 4
Between 2 and 3, but closer to 2
Between 2 and 3, but closer to 3
Answers
Answer:
A) Between 3 and 4, but closer to 3======================
First, find the cubes of 2, 3 and 4 and then compare them with 30.
2³ = 8,3³ = 27,4³ = 64We see that 30 is between 27 and 64 and is closer to 27:
27 < 30 < 64Therefore cube root of these numbers are:
∛27 < ∛30 < ∛643 < ∛30 < 4So the ∛30 is between 3 and 4 and closer to 3.
Correct answer choice is A.
Answer:
A) Between 3 and 4, but closer to 3.
Step-by-step explanation:
A perfect cube is the result of multiplying the same integer three times.
First few perfect cubes: 1, 8, 27, 64, 125, etc.To estimate the value of the cube root of a number, find the perfect cubes above and below the number:
The perfect cubes either side of 30 are:
27 < 30 < 64Therefore, the cube roots are:
[tex]\implies \sf \sqrt[3]{27} < \sqrt[3]{30} < \sqrt[3]{64}[/tex]
[tex]\implies \sf 3 < \sqrt[3]{30} < 4[/tex]
As 30 is closer to 27 than 64, the cube root of 30 is closer to the cube root of 27 than the cube root of 64.
Therefore, the cube root of 30 would be plotted on a number line:
between 3 and 4, but closer to 3.Evaluate the expression, writing the result as a simplified complex number.My answer 3iI know is wrong but I don’t know why.
Answers
The first thing we can do is solve the i cubed:
[tex]undefined[/tex]Determine the length of the longest side of the triangle ABC. Showyour work and round answers to the nearest tenth. *15 in.CB78°10 in.A
Answers
We would make use of the cosine rule,
[tex]\begin{gathered} C^2=A^2+B^2-2AB\cos C \\ C^2=15^2+10^2-2\times10\times15\times\cos 78 \end{gathered}[/tex][tex]\begin{gathered} C^2=325-62.374\text{ =262.626} \\ C=\text{ 16.206 }\approx\text{ 16.2 in} \end{gathered}[/tex]For Monday morning's staff meeting, Jim bought 3 bags of bagels and 3 packages of cream cheese and paid $16.50 (excluding sales tax).For Friday's meeting, he bought 5 bags of bagels and 2 packages of cream cheese and paid $22.25 (again, excluding sales tax). How much dobags of bagels and packages of cream cheese cost?
Answers
Answer:
Explanation:
Let the price of one bag of bagel = b
Let the price of one package of cream cheese = c
3 bags of bagels and 3 packages of cream cheese costs $16.50.
[tex]3b+3c=16.50\cdots(1)[/tex]5 bags of bagels and 2 packages of cream cheese costs $22.25.
[tex]5b+2c=22.25\cdots(2)[/tex]Thus, we derive a system of two linear equations which we then solve for b and c.
[tex]\begin{gathered} 3b+3c=16.50\operatorname{\cdots}(1) \\ 5b+2c=22.25\operatorname{\cdots}(2) \end{gathered}[/tex]Multiply equation 1 by 5 and equation 2 by 3.
[tex]\begin{gathered} 15b+15c=82.5 \\ 15b+6c=66.75 \end{gathered}[/tex]Subtract to eliminate b.
[tex]9c=15.75[/tex]Divide both sides by 9:
[tex]\begin{gathered} \frac{9c}{9}=\frac{15.75}{9} \\ c=1.75 \end{gathered}[/tex]Next, substitute c=1.75 into equation 1.
[tex]\begin{gathered} 3b+3c=16.50 \\ 3b+3(1.75)=16.50 \\ 3b=16.50-3(1.75)=11.25 \\ b=\frac{11.25}{3}=3.75 \end{gathered}[/tex]The price per bag of bagel is $3.75 and the price per package of cream cheese is $1.75.
Last year, Lisa opened an investment account with $8400. At the end of the year, the amount in the account had decreased by 24.5%. How much is this decrease in dollars? How much money was in her account at the end of last year?
Answers
Answer:
The dec
Explanation:
Given that Lisa opened an investment account with $8400, at the end of the year, the amount in the account had decreased by 24.5%. We want to know how much the decrease is, and how much was in her account at the end of last year.
All we are required to find is what value is 24.5% of $8400
24.5% is the same as:
[tex]\frac{24.5}{100}[/tex]24.5% of $8400 is now:
[tex]\begin{gathered} \frac{24.5}{100}\times8400 \\ \\ =24.5\times84 \\ =2058 \end{gathered}[/tex]Therefore 24.5% of $8400 is $2058
This amount is the decrease.
Finally, at the end of last year, the amount in her account is:
$8400 - $2058 = $6342
Answer: If you do 8400 - 24.5% you get 6342. Then if you do 8400 - 6342 you get 2058. So her account decreased by $2,058 and she had $6342 left in her account at the end of the year.
Savannah invested $5,300 in an account paying an interest rate of 3 5/8 % compounded daily.
Answers
The amount that will be in Savannah's account after 3 years is $6042.
What is compound interest?Compound interest is the interest on savings calculated on both the initial principal and the accumulated interest from previous periods.
To calculate the amount that will be in Savannah's account after 3 years, we use the formula below.
Fromula:
A = P(1+R/365)³⁶⁵ⁿ........... Equation 1Where:
A = Amount P = PrincipleR = Raten = time/yearsFrom the question,
Given:
P = %5300R = 35/8% = 4.375% = 0.04375n = 3 yearsSubstitute these values into equation 1
A = 5300(1+0.04375/365)³ˣ³⁶⁵A = 5300(1.00012)¹⁰⁹⁵A = 5300×1.14A = $6042Hence, there would be $6042 in the account.
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Compelete question: Savannah invested $5,300 in an account paying an interest rate of 3 5/8 % compounded daily, Assuming no deposits or withdrawals are made, how much money, to the nearest cent, would be in the account after 3 years?
Which of the equations will be a true statement if p = 10 3 ? Select the two choices that apply. A.
3
.
4
÷
p
=
0
.
034
B.
437
÷
p
=
0
.
437
C.
53
.
45
÷
p
=
53
.
45
D.
6
,
340
÷
p
=
6
.
34
E.
2
,
458
.
2
÷
p
=
24
.
582
Answers
The linear equation in one variable is used to know on e unknown quantity. The correct answer is option a.
What is a Linear equation?A linear equation is a equation that has degree as one.
To find the solution of n unknown quantities n number of equations with n number of variables are required.
Given that,
The value of p = 10.3
Substitute p = 10.3 in all the given option as,
(a)
3.4 ÷ p = 0.34
Substitute p = 10.3 in the above equation to get,
LHS = 0.33
Since LHS = RHS
The given option is true.
(b)
437 ÷ p = 0.437
Substitute p = 10.3 in the above equation to get,
LHS = 42.427
Since LHS ≠ RHS
The given option is not true.
(c)
53.45 ÷ p = 53.45
Substitute p = 10.3 in the above equation to get,
LHS = 5.18
Since LHS ≠ RHS
The given option is not true.
(d)
340 ÷ p = 6.34
Substitute p = 10.3 in the above equation to get,
LHS =33
Since LHS ≠ RHS
The given option is not true.
(e)
2458 ÷ p = 24.582
Substitute p = 10.3 in the above equation to get,
LHS =238.64
Since LHS ≠ RHS
The given option is not true
Hence, the value of p satisfies only for option a.
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simplify the expression so there is only one positive power for the base -5
Answers
When we are dividing, exponents are subtracted!
The rule is shown below:
[tex]a^b\div a^c=a^{b-c}[/tex]We can apply this rule to this problem as shown:
[tex]\begin{gathered} -5^7\div-5^2 \\ =-5^{7-2} \\ =-5^5 \end{gathered}[/tex]PLEASE HELP!!!!! (31 POINTS!) Fill in the arithmetic table
Answers
The table for this arithmetic sequence should be completed as follows:
Position 1 6 8 11 19 25
Term 0 -10 -14 -20 -36 -48
How to calculate an arithmetic sequence?Mathematically, the nth term of an arithmetic sequence can be calculated by using this expression:
aₙ = a₁ + (n - 1)d
Where:
d represents the common difference.a₁ represents the first term of an arithmetic sequence.n represents the total number of terms.Next, we would determine the common difference by using the 25th term of this arithmetic sequence:
-48 = 0 + (25 - 1)d
-48 = 24d
d = -48/2
d = -2.
For the nth term of this arithmetic sequence with -10, we have:
aₙ = a₁ + (n - 1)d
-10 = 0 + (n - 1)-2
-10 = -2n + 2
2n = 12
n = 6.
For the 8th term of this arithmetic sequence, we have:
a₈ = a₁ + (n - 1)d
a₈ = 0 + (8 - 1)-2
a₈ = -14.
For the nth term of this arithmetic sequence with -20, we have:
aₙ = a₁ + (n - 1)d
-20 = 0 + (n - 1)-2
-20 = -2n + 2
2n = 22
n = 11.
For the 19th term of this arithmetic sequence, we have:
a₁₉ = a₁ + (n - 1)d
a₁₉ = 0 + (19 - 1)-2
a₁₉ = -36.
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Which expression is equivalent to 20 — 3(x + 2)?A 3X+ 14B —3x + 14 C -9x + 21 D 17x— 34
Answers
We have to simplify the expression:
[tex]20-3(x+2)[/tex]and see which expression is equivalent.
We can do it like this:
[tex]\begin{gathered} 20-3(x+2) \\ 20-3\cdot x-3\cdot2 \\ 20-3x-6 \\ 20-6-3x \\ 14-3x \\ -3x+14 \end{gathered}[/tex]This expression is equivalent to -3x+14.
Answer: -3x+14 [Option B]
Answer:
first option
Step-by-step explanation:
[tex]\frac{\frac{-2}{x}+\frac{5}{y} }{\frac{3}{y}-\frac{2}{x} }[/tex] ← combine fractions on numerator and denominator
= [tex]\frac{\frac{-2y+5x}{xy} }{\frac{3x-2y}{xy} }[/tex]
leave numerator, change division to multiplication and turn denominator 'upside down'
= [tex]\frac{-2y+5x}{xy}[/tex] × [tex]\frac{xy}{3x-2y}[/tex] ← cancel xy on numerator/ denominator
= [tex]\frac{-2y+5x}{1}[/tex] × [tex]\frac{1}{3x-2y}[/tex]
= [tex]\frac{-2y+5x}{3x-2y}[/tex]
2. At the gas station, three small drinks and two large drinks contain 108 ounces ofcola. A small drink contains a third as much cola as a large drink. How much coladoes each size drink contain?
Answers
Let x = small drinks
Let y = large drinks
3 small drinks and 2 large drinks contain 108 ounces of cola, this is:
3x + 2y = 108
A small drink contains a third as much cola as a large drink, this is:
x = 1/3y
Then, we solve the system of equations:
[tex]\begin{gathered} 3x+2y=108 \\ x=\frac{1}{3}y \end{gathered}[/tex]First, substitute x in equation 1:
[tex]3(\frac{1}{3}y)+2y=108[/tex]And solve for y:
[tex]\begin{gathered} y+2y=108 \\ 3y=108 \\ \frac{3y}{3}=\frac{108}{3} \\ y=36 \end{gathered}[/tex]Next, substitute y = 36 in x:
[tex]x=\frac{1}{3}y=\frac{1}{3}(36)=12[/tex]Answer:
Small drinks: 12 ounces of cola
Large drinks: 36 ounces of cola