A rectangular garden measures 40 yards by 35 yards. a lawn of uniform width surrounds the garden and has an area of 316 square yards. find the width of the lawn that surrounds the garden.

Answers

Answer 1
The lawn area of uniform width can be written as follows:
 A = (40 + 2x) * (35 + 2x) - (40) * (35)
 Where,
 x: width of the lawn
 Substituting the value of the area we have:
 316 = (40 + 2x) * (35 + 2x) - (40) * (35)
 Rewriting:
 316 = 1400 + 80x + 70x + 4x ^ 2 - 1400
 Rewriting we have:
 4x ^ 2 + 150x - 316 = 0
 Solving the polynomial we have:
 x1 = - 79/2
 x2 = 2
 Taking the positive root we have that the grass width des:
 x = 2 yards
 Answer:
 
The width of the lawn that surrounds the garden is:
 
x = 2 yards
Answer 2

The width of the lawn surrounding the garden is 2 yards.

Let's denote the width of the lawn as "w" yards.

The dimensions of the garden are 40 yards by 35 yards. Including the lawn, the dimensions become:

Length: 40 + 2w yards

Width: 35 + 2w yards

The area of the rectangle including the garden and the lawn is:

(40 + 2w) × (35 + 2w) square yards

The area of the garden itself is:

40 × 35 = 1400 square yards

The area of the lawn alone is:

Total area - Area of the garden = 316 square yards

Therefore:

(40 + 2w) × (35 + 2w) - 1400 = 316

Expand the left side of the equation:

= (40 + 2w)(35 + 2w)

= 40 × 35 + 40 × 2w + 35 × 2w + 2w × 2w

= 1400 + 80w + 70w + 4w²

= 1400 + 150w + 4w²

Set up the equation:

= 1400 + 150w + 4w² - 1400 = 316

= 150w + 4w² = 316

Rearranging the equation:

4w² + 150w - 316 = 0

Solve this quadratic equation using the quadratic formula:

w = (-b ± √(b² - 4ac)) / 2a

Here, a = 4, b = 150, and c = -316

Calculate the discriminant:

= b² - 4ac

= 150² - 4 × 4 × (-316)

= 22500 + 5056

= 27556

√27556 ≈ 166

Therefore:

w = (-150 ± 166) / 8

This gives two potential solutions:

w = (16 / 8) = 2

w = (-316 / 8) (not valid as width cannot be negative)


Related Questions

do 5, 4, 3 represent the side lengths of a triangle

Answers

3^3 + 4^2 = 5^2
9 + 16 = 25
They are the side lengths of a triangle and they are the sides of a RIGHT triangle.


Lin is 7 years younger than Adrian,
Adrian is 4 years older than half of Maya's age,
The sum of the 3 ages is 61,
How old is Lin?

Answers

Answer: Age of Lin is 12

Solution:

Let X= age of Maya

(X/2)+4= age of Adrian

((X/2)+4)-7= age of Lin

X+(X/2)+4+((X/2)+4-7)=61

X+.5X+4+.5X+4-7=61

2X+4+4-7=61

2x=61-8+7

2X=60

X=30 age of Maya

19= age of Adrian

Age of Lin is

=((X/2)+4)-7

=15+4-7

=12

To check if this is correct

30+19+12=61

By setting up an algebraic equation to represent the relationship between the ages of Lin, Adrian, and Maya, and using the sum of their ages, we determined that Lin is 17 years old.

To solve this problem, let's use algebra to define the ages of Lin, Adrian, and Maya. Let's assume that Maya's age is X. Based on the information provided, Adrian is 4 years older than half of Maya's age, so Adrian's age is represented as (X/2) + 4. Lin is 7 years younger than Adrian, so Lin's age is (X/2) + 4 - 7, which simplifies to (X/2) - 3. The sum of the three ages is 61, so we can now set up an equation to find Maya's age and, subsequently, Lin's age.

The equation based on the su of their ages is:

X + (X/2) + 4 + (X/2) - 3 = 61

Combining like terms and solving for X:

2X + X + 8 - 6 = 122

3X + 2 = 122

3X = 120

X = 40

Now that we know Maya's age (X), we can find Lin's age:

(40/2) - 3 = 20 - 3 = 17

Therefore, Lin is 17 years old.

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- Angle LOM and angle MON are complementary angles. If m∠LOM = (x + 15)° and m∠MON = 48°, which equation could be used to solve forx?

A. (x + 15)° + 48° = 180°
B. (x + 15)° = 90°
C. (x + 15)° + 90° = 48°
D. (x + 15)° + 48° = 90°

Answers

Hi there!

Angles that are complementary add up to 90. We know that in order to find the value of x, we'll need to create an equation. This equation would be (x + 15) + 48 = 90. This is because, together, the two angles must add up to 90.

ANSWER:
D - (x + 15) + 48 = 90

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
Final answer:

The correct equation to solve for x, given that angle LOM (measured as (x + 15)°) and angle MON (measured as 48°) are complementary, is (x + 15)° + 48° = 90°. Thus, the answer is option D.

Explanation:

The subject of this question is Mathematics, specifically it refers to geometry, solving for a variable, and understanding the concept of complementary angles. Let's analyze the options provided.

Two angles are said to be complementary if the sum of their measure is 90 degrees. So, if angle LOM and angle MON are complementary, the sum of m∠LOM and m∠MON should be 90°. Since the measure of m∠LOM is given as (x + 15)° and the measure of m∠MON is given as 48°, the equation that represents this relationship is (x + 15)° + 48° = 90°.

Therefore, option D is the correct choice to solve for x.

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How would I find a? What formula would I use?

Answers

Answer:

  You can use either of the following to find "a":

Pythagorean theoremLaw of Cosines

Step-by-step explanation:

It looks like you have an isosceles trapezoid with one base 12.6 ft and a height of 15 ft.

I find it reasonably convenient to find the length of x using the sine of the 70° angle:

  x = (15 ft)/sin(70°)

  x ≈ 15.96 ft

That is not what you asked, but this value is sufficiently different from what is marked on your diagram, that I thought it might be helpful.

__

Consider the diagram below. The relation between DE and AE can be written as ...

  DE/AE = tan(70°)

  AE = DE/tan(70°) = DE·tan(20°)

  AE = 15·tan(20°) ≈ 5.459554

Then the length EC is ...

  EC = AC - AE

  EC = 6.3 - DE·tan(20°) ≈ 0.840446

Now, we can find DC using the Pythagorean theorem:

  DC² = DE² + EC²

  DC = √(15² +0.840446²) ≈ 15.023527

  a ≈ 15.02 ft

_____

You can also make use of the Law of Cosines and the lengths x=AD and AC to find "a". (Do not round intermediate values from calculations.)

  DC² = AD² + AC² - 2·AD·AC·cos(A)

  a² = x² +6.3² -2·6.3x·cos(70°) ≈ 225.70635

  a = √225.70635 ≈ 15.0235 . . . feet

bananas are on sale at 8 for .96. find the cost of 7 banana

Answers

Each banana would cost $0.12 and 0.12 x 7 is $0.84

Write the equation of the parabola that has the vertex at point (2,7) and passes through the point (−1,3).

Answers

Final answer:

The equation of the parabola with the vertex at (2,7) and passing through (-1,3) is y = -(4/9)(x - 2)^2 + 7, found by substituting the given points into the vertex form of a parabola's equation.

Explanation:

To find the equation of a parabola given its vertex and a point it passes through, we use the vertex form of a parabola's equation, which is y = a(x - h)^2 + k, where (h, k) is the vertex of the parabola.

Given the vertex at (2,7) and a point (-1,3) through which the parabola passes, we substitute these values into the vertex form to find the value of 'a'.

Substituting the vertex, we have:

y = a(x - 2)^2 + 7

Then, substituting the point (-1,3) into the equation, we get:

3 = a(-1 - 2)^2 + 7

Solving for 'a', we get:

3 = a(3)^2 + 7 \n3 = 9a + 7 \n-4 = 9a \na = -4/9

Therefore, the equation of the parabola is:

y = -(4/9)(x - 2)^2 + 7

The equation of the parabola with the vertex at (2,7) and passing through (-1,3) is y = -(4/9)(x - 2)2 + 7, found by substituting the given points into the vertex form of a parabola's equation.

To find the equation of a parabola given its vertex and a point it passes through, we use the vertex form of a parabola's equation, which is y = a(x - h)2 + k, where (h, k) is the vertex of the parabola.

Given the vertex at (2,7) and a point (-1,3) through which the parabola passes, we substitute these values into the vertex form to find the value of 'a'.

Substituting the vertex, we have:

y = a(x - 2)2 + 7Then, substituting the point (-1,3) into the equation, we get:

3 = a(-1 - 2)2 + 7

Solving for 'a', we get:

3 = a(3)2 + 7n3 = 9a + 7n-4 = 9ana = -4/9

Therefore, the equation of the parabolais: y=-(4/9)(x-2)2+7

HELP ME PLEASE THIS IS IMPORTANT

Answers

when multiplying numbers with exponents you add the numbers
 since the answer has 9 as the exponent c = 9-7 = 2
c=2

the answer is positive 36 so d would be 36 / -9 = -4

d = -4

In the triangle below, what is csc E?


Answers

check the picture below.

!!!WILL MARK BRAINLIEST IF CORRECT AND ALL PARTS OF THE QUESTION ANSWERED!!!!

1. A box without a top is to be made from a rectangular piece of cardboard, with dimensions 8 in. by 10 in., by cutting out square corners with side length x and folding up the sides.

(a) Write an equation for the volume V of the box in terms of x.
(b) Use technology to estimate the value of x, to the nearest tenth, that gives the greatest volume. Explain your process.

Answers

(a) The dimensions of the base of the box are (8 -2x) and (10 -2x). The depth of the box is x. The volume is the product of these dimensions.
  V = x(8 -2x)(10 -2x)

(b) A graphing calculator is suitable "technology". The process is ...
• write the equation in the calculator
• adjust the scaling so the curve fills the display area
• select the maximum point to reveal its coordinates

The value of x that maximizes box volume is about 1.5 inches.

Please help me with a simple math problem.

What is M DFE?

A. 19
B. 42
C. 78
D. 119

Answers

42 is the correct answer

2 more questions thanks

Answers

These are two questions and two answers.

1) Problem 17.

(i) Determine whether T is continuous at 6061.

For that  you have to compute the value of T at 6061 and the lateral limits of T when x approaches 6061.

a) T(x) = 0.10x if 0 < x ≤ 6061

T (6061) = 0.10(6061) = 606.1

b) limit of Tx when x → 6061.

By the left the limit is the same value of T(x) calculated above.

By the right the limit is calculated using the definition of the function for the next stage: T(x) = 606.10 + 0.18 (x - 6061)

⇒ Limit of T(x) when x → 6061 from the right = 606.10 + 0.18 (6061 - 6061) = 606.10

Since both limits and the value of the function are the same, T is continuous at 6061.

(ii) Determine whether T is continuous at 32,473.

Same procedure.

a) Value at 32,473

T(32,473) = 606.10 + 0.18 (32,473 - 6061) = 5,360.26

b) Limit of T(x) when x → 32,473 from the right

Limit = 5360.26 + 0.26(x - 32,473) = 5360.26

Again, since the two limits and the value of the function have the same value the function is continuos at the x = 32,473.

(iii) If  T had discontinuities, a tax payer that earns an amount very close to the discontinuity can easily approach its incomes to take andvantage of the part that results in lower tax.

2) Problem 18.

a) Statement Sk

You just need to replace n for k:

Sk = 1 + 4 + 7 + ... (3k - 2) = k(3k - 1) / 2

b) Statement S (k+1)

Replace

S(k+1) = 1 + 4 + 7 + ... (3k - 2) + [ 3 (k + 1) - 2 ] = (k+1) [ 3(k+1) - 1] / 2

Simplification:

1 + 4 + 7 + ... + 3k - 2+ 3k + 3 - 2] = (k + 1) (3k + 3 - 1)/2

                 k(3k - 1)/ 2 + (3k + 1) = (k + 1)(3k+2) / 2

Do the operations on the left side and  you will find it can be simplified to k ( 3k +1) (3 k + 2) / 2.

With that you find that the left side equals the right side which is a proof of the validity of the statement by induction.

Hello,
Please, see the detailed solution in the attached files.
Thanks.

angle j and angle k are vertical angles as shown in the figure below . the measure of j is 46 what is the measure of angle k


a. 44
b. 46
c. 134
d. 136

Answers

The lines are vertical and are the same , so the angles are the same

answer  : b) 46


In a class experiment, Sean finds that the probability that a student plays soccer is . If the school population is 300, how many students would we expect to play soccer, based on Sean's experiment?

Answers

It's 144

well I just got out of a test  and the answer was 144.

I don't really understand how to put anything into standard form. If anyone could help that would be great...thanks.

Answers

I believe you would first distribute within the parentheses and then make it so A and B are the only things on the left side and I and the other random characters are on the right.

If a cube with side length 6 inches has its dimensions divided in half, what will be the volume of the new cube?

Answers

What will be the volume of the cube? A 27 cubic inch

Given is the side length of a cube = 6 inches.

It says that the dimensions of this cube are divided into half, so the side length of new cube would be 3 inches.

We know the formula for volume of cube is given as follows :-

Volume of new cube  = Side x Side x Side.

Volume of new cube  = 3 inches x 3 inches x 3 inches.

Volume of new cube  = 27 cubic inches.

Hence, 27 cubic inches is the answer.

−32c+12≤−66c−16

Can someone solve please?

Answers

i hope this helps!!!

Answer:

c  ≤  c  ≤  [tex]\frac{-14}{17}[/tex].

Step-by-step explanation:

Given : −32c + 12 ≤ −66c − 16.

To find : Solve

Solution ": We have given

−32c + 12 ≤ −66c − 16.

On subtracting both sides by 12

- 32 c  ≤ −66c − 16 - 12

- 32 c  ≤ −66c − 28

On adding both sides by 66 c

-32c +66c  ≤  − 28.

34 c ≤  − 28.

On dividing both sides by 34

c  ≤  [tex]\frac{-28}{34}[/tex].

On dividing both number by 2

c≤  [tex]\frac{-14}{17}[/tex].

Therefore, c  ≤  [tex]\frac{-14}{17}[/tex].

Anyone know the answer?

Answers

AB = CB
Because they are congruent
Therefore CB = 5.9
Given perimeter = 17
CB+BE+ED+DC = 17
5.9 + BE + 2.8 + 5.6 = 17
BE + 14.3 = 17
BE = 17 - 14.3
= 2.7
Hope I helped
If I did please give brainlest answer
Thanks

PLEASE HELP!!! IM GIVING 30 POINTS AND BRAINLIEST!!!!

If Y = 17 inches, Z = 22 inches, H = 7 inches, and W = 4 inches, what is the area of the object?

A.
352 square inches
B.
242 square inches
C.
175 square inches
D.
165 square inches

Answers

its d 
reason is that area of a traingle is base times hight divided by 2 so H times Z divided by two =(22x7)/2==77
then you add the area of the rectangle on the bottom (W times Z )= 88
77+88=165
Hope this makes sense and I get brainiest!!

Find the recursive formula for the geometric sequence 5, 10, 20, 40, . . .

Answers

Hello!

I believe that the repeated formula that is continuing the geometric sequence is "multiply by 2". The rule of the sequence is to multiply by 2 because the first number of the sequence is 5 and when you multiply 5 w/ 2, you get 10. After multiplying 10 w/ 2 as well, you'll get 20, which is the next number in the geometric sequence. Same goes for when you multiply 20 w/ 2. Your result would be 40. So, the recursive formula is to multiply by 2.

I hope this helps!


16q^2+20q+6
A. (8q+3)(2q+1)
B. (8q+1)(2q+3)
C. 2(4q+3)(2q+1)
D. 2(4q+1)(2q+3)

Answers

good day ^-^ ///////////////

the solutions to a linear equation are the points in the plane that make the inequality true .
true or false ?

Answers

Final answer:

The statement is false. An equation's solutions are points on a line; an inequality's solutions encompass a region on the plane.

Explanation:

The statement is false. The solutions to a linear equation are the points (x, y) in the plane that make the equation true, not an inequality. An equation represents a line on the coordinate plane, and every point on that line is a solution to the equation. In contrast, an inequality describes a range or region of the coordinate plane, not just a single line, and the solutions are the coordinates within that range.

For instance, the solutions to the equation y = 2x + 3 are all the points on the line where this is true. On the other hand, solutions to the inequality y > 2x + 3 would be all the points in the region above the line y = 2x + 3.

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Final answer:

The assertion that solutions to a linear equation are the points that make an inequality true is incorrect. It is the solutions to a linear inequality that would make the inequality true.

Explanation:

The statement provided in the question is false. Solutions to a linear equation are the points on the line that make the equation true, not an inequality. If we are dealing with a linear inequality, then its solutions are the points in the plane that satisfy the inequality, often forming a region, instead of just the points on a line.

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A company is manufacturing a new ice cube with a hole in the center, which they claim will cool a drink twice as fast as a cube of the same size. The cube has a length, width, and height of 4 cm. The hole has a diameter of 2 cm. To the nearest tenth, find the surface area of a single cube (including the inside of the hole).

Answers

The new cube will have 7 surfaces: 4 equal square sides, 2 square surface with a hole, and one hole surface.

Area (A1) of 4 square surfaces = 4*L*W = 4*4*4 = 64 cm^2
Area (A2) of the two surfaces wit a hole = 2(L*W - 2πd^2/4) = 2(4*4-π*2^2/4) = 25.72 cm^2
Area (A3) of  the hole = πD*W = π*2*4 = 25.13 cm^2

Total surface area, A = A1+A2+A3 = 64+25.72+25.13 = 114.85 cm^2

point E is the midpoint of ab and point f is the midpoint of CD

Answers

AB is bisected by CD (TRUE). This is True because E is the midpoint between A and B and CD passes through E

CD is bisected by AB (FALSE) CD is bisected by point F and not AB

AE = 1/2 * AB (TRUE) since E is the midpoint of AB , E divides AB into two equal halves

EF = 1/2 * ED (FALSE) The true statement would have been CF = 1/2* CD

FD = EB (FALSE) sinc we do not know if CD and AB are of the same lengths

CE + EF = ED (TRUE) since F is the midpoint the sum of CE and EF is equal to ED



The statements for the line AB and CD for this condition that are true are given as:

Option A: [tex]\overline{AB}[/tex] is bisected by [tex]\overline{CD}[/tex]

Option C: [tex]AE = \dfrac{1}{2} \times AB[/tex]

Option F: CE + EF = FD

What is a bisector?

A bisector of a line bisects that considered line. Bisect means to split in two equal parts.

For this case, we see that CD passes through mid point of AB, so CD is bisector of line AB or we say that line segment AB is bisected by line segment CD.

But AB does not passes through the center of AB, thus, AB is not a bisector of CD, or we say that line segment CD is not bisected by line segment AB

AE = EB

And AE + EB = AB

Thus, AE + AE + AB

or 2AE = AB

or AE = (AB)/2 = (1/2)AB

E is not necessary to be fixed on CD, it can move between C and F. Thus any statement about length of E to any point on CD is not necessary to be true.

FD is half of CD and EB is half of AB. It is not necessary that AB and CD are of same length, thus, it is not necessary that FD and EB are going to be of same length, thus, not congruent(two line segments are called congruent (denoted by ≅) if they are of same lengths).

CE + EF = CF, and CF = FD since F is midpoint.

Thus, CE + EF = FD

Thus, the statements for the line AB and CD for this condition that are true are given as:

Option A: [tex]\overline{AB}[/tex] is bisected by [tex]\overline{CD}[/tex]

Option C: [tex]AE = \dfrac{1}{2} \times AB[/tex]

Option F: CE + EF = FD

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Find the Perimeter of the triangle. Round 2 decimal places.

Answers

The formula for calculating length of a side of triangle is:
[tex]d= \sqrt{( x_{2}- x_{1}) ^{2}+(y_{2}-y_{1})^{2} } [/tex]
And as perimeter is just the sum of length of all side, we will calculate the length of each side and then sum them up.

1. Side AB:
[tex]d_{1}= \sqrt{( 3- (-2)) ^{2}+(0-3)^{2} }[/tex]
d₁= √34

2.Side AC
[tex]d_{2}= \sqrt{( (-4)- (-2)) ^{2}+((-3)-3)^{2} }[/tex]
d₂=2√10

3.Side BC
[tex]d_{3}= \sqrt{( (-4)- 3) ^{2}+((-3)-0)^{2} [/tex]
d₃=√58

Perimeter
[tex]P= \sqrt{34}+ 2\sqrt{10} + \sqrt{58} [/tex]
P=19.77

A pie takes 2/3 of an hour to bake if a pie is put into the oven at 7:30 at what time does it need to be taken out.

Answers

You would have to take the pie out at 8:10, because 2/3 of an hour is 40 minutes. To make the addition of time easier break it up into bits, like for here you could say, 7:30 plus 30 minutes out of the 40 is 8:00 then you could just add the extra ten minutes afterwords!
Hope this helps, have a good day!

Convert hour to minutes:
2/3 hours = 2/3 x 60 = 40 mins

                   30 mins                    10 mins
   |-----------------------------|--------------------------------|
7.30                             8.00                               8.10

Answer: 8:10

Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. If the perimeter is 49 ft, how long is each side

Answers

A triangle perimeter = side1+side2+side3=49ft

Where side1=side2 because 2 of the sides equal

And side3=side1+4ft because side3 is 4ft more than the length of an equal side

Plug them in
49ft=side1+side1+(side1+4ft)

simplify
Subtract 4 from both sides
45ft = side1+side1+side1
45ft = 3*side1
Divide both sides by 3
15ft = side1

Side1 =side2=15ft
Side3=side1+4ft= 15+4=19ft


the function of y=log(x) is translated 1 unit right and 2 units down. which is the graph of the translated function

Answers

the answer is B. because its B.

The graph of the translated function is attached

To find the graph of the function, we apply the translations

Parent function: y = log(x)

1 unit right: y = log(x - 1)

2 units down: y = log(x - 1) - 2

The graph of the function: y = log(x - 1) - 2 is attached

Two numbers N and 16 have LCM = 48 and GCF = 8. Find N.

Answers

The missing number to the letter N is 8

Final answer:

To find the number N with LCM of 48 and GCF of 8 with 16, we use the formula LCM × GCF = N × 16 which gives N = 24.

Explanation:

To find the number N when given that it has a Least Common Multiple (LCM) of 48 with the number 16 and a Greatest Common Factor (GCF), also known as the Greatest Common Divisor (GCD), of 8, we can use the relationship between LCM, GCF, and the product of the two numbers:

LCM(N, 16) × GCF(N, 16) = N × 16

Given that LCM(N, 16) = 48 and GCF(N, 16) = 8, we can substitute these values into the equation:

48 × 8 = N × 16

Solving for N:

N = × 48 × 8 / 16

N = × 24

Hence, the number N is 24.

Tan α = - 4/3 lies in quad 2, and cos β = 2/3 lies in quad 1 find
a. cos(α + β)
b. sin( α+β)
c. t...

Answers

Recall some identities:


[tex]\cos^2x+\sin^2x=1[/tex]

[tex]\tan^2x+1=\sec^2x=\dfrac1{\cos^2x}[/tex]


[tex]\cos(\alpha+\beta)=\cos\alpha\cos\beta-\sin\alpha\sin\beta[/tex]


[tex]\sin(\alpha+\beta)=\sin\alpha\cos\beta+\cos\alpha\sin\beta[/tex]

Not sure what part (c) is asking for, but I assume it's [tex]\tan(\alpha+\beta)[/tex], in which case


[tex]\tan(\alpha+\beta)=\dfrac{\sin(\alpha+\beta)}{\cos(\alpha+\beta)}[/tex]


If [tex]\tan\alpha=-\dfrac43[/tex], then

[tex]\dfrac1{\cos^2\alpha}=1+\left(-\dfrac43\right)^2=\dfrac{25}9[/tex]
[tex]\implies\cos\alpha=\pm\dfrac35[/tex]

We know that [tex]\alpha[/tex] lies in quadrant 2, i.e. [tex]\dfrac\pi2<\alpha<\pi[/tex], so we expect [tex]\cos\alpha<0[/tex]. So we take the negative root. We also find that

[tex]\tan\alpha=\dfrac{\sin\alpha}{\cos\alpha}\iff-\dfrac43=\dfrac{\sin\alpha}{-\frac35}\implies\sin\alpha=\dfrac45[/tex]

If [tex]\cos\beta=\dfrac23[/tex], then


[tex]\sin^2\beta=1-\left(\dfrac23\right)^2=\dfrac59\implies\sin\beta=\pm\dfrac{\sqrt5}3[/tex]


Since [tex]\beta[/tex] lies in quadrant 1, i.e. [tex]0<\beta<\dfrac\pi2[/tex], we know that [tex]\sin\beta>0[/tex], so we take the positive root.


Now,

[tex]\cos(\alpha+\beta)=-\dfrac35\cdot\dfrac23-\dfrac45\cdot\dfrac{\sqrt5}3=-\dfrac52-\dfrac4{3\sqrt5}[/tex]


[tex]\sin(\alpha+\beta)=\dfrac45\cdot\dfrac23+\left(-\dfrac35\right)\cdot\dfrac{\sqrt5}3=\dfrac8{15}-\dfrac1{\sqrt5}[/tex]

Then it follows that


[tex]\tan(\alpha+\beta)=\dfrac{\frac8{15}-\frac1{\sqrt5}}{-\frac52-\frac4{3\sqrt5}}=\dfrac{54-25\sqrt5}{22}[/tex]

The length of a train is about 1,700 meters. If there are approximately 3.28 feet in one meter, what is the length of the train in feet?



0.002 feet


557,600 feet


5,576 feet


518 feet

Answers

it should be 5,576 feet
Final answer:

To convert 1,700 meters to feet, we multiply by the conversion factor of 3.28 feet per meter, resulting in a length of 5,576 feet for the train.

Explanation:

To find the length of the train in feet, we need to convert meters to feet using the conversion factor provided. Given that 1 meter is approximately 3.28 feet, we can calculate the length of the train in feet by multiplying the length of the train in meters (1,700 meters) by the conversion factor (3.28 feet per meter).

The calculation would be as follows:

1,700 meters × 3.28 feet/meter = 5,576 feet

Therefore, the length of the train is 5,576 feet.

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