A tree is 4 1/2 feet tall. It is expected to grow 1 3/4 feet per year. At this growth rate, how many years will it take for the tree to have a height greater then 40 feet?

Answer:

1. sinα = +2√5/5 2.  cosα = +√5/5 3. cotα = +1/2 4. secα = +√5 5. cosecα = +√5/2.

Step-by-step explanation:

1. Since tan(α) = 2 and 1 + cot²α = cosec²α

1 + 1/tan²α = 1/sin²α

1 + 1/2² = 1/sin²α

1 + 1/4 = 1/sin²α

5/4 = 1/sin²α

sinα = ±√(4/5)

sinα = ±2/√5

sinα = ±2√5/5

Since 0<α<π/2, sinα = +2√5/5

2. sin²α + cos²α = 1

(2/√5)² + cos²α = 1

4/5 + cos²α = 1

cos²α = 1 - 4/5

cos²α = 1/5

cosα = ±1/√5

cosα = ±√5/5

Since 0<α<π/2, cosα = +√5/5

3. cotα = 1/tanα = 1/2

Since 0<α<π/2, cotα = +1/2

4. secα = 1/cosα = 1/±1/√5 = ±√5

Since 0<α<π/2, secα = +√5

5. cosecα = 1/sinα = 1/±2/√5 = ±√5/2

Since 0<α<π/2, cosecα = +√5/2

Answer:

three tenths of the original amount

Let's start.

There are 10 horses.

(Buying the set is not important, since it does not affect this scenario.)

You sell three horses to Kate, and you expect her to give you the exact price.

Let's say that 10 horses cost the total (unknown).

10 horses equal the total amount, or 1

10 to 1

Now, you sell 3 of these horses. You must multiply 10 and n to make 3.

10 x n = 3

10x 3/10 = 3

Do the same to the other side.

1 x 3/10 = 3/10

3 to 3/10

Answer:

The formula says that the sum of the first n terms of our arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.

Answer:

the magnitude of a real number without regard to its sign.

Step-by-step explanation:

Solving Absolute Value is just asking you how far away -4 is from zero. Since distance is always a positive number (you can't travel "negative" steps, just steps in a different direction), the result of absolute value is always positive. Make the number in the absolute value sign positive.

Answer:

44 cm^2

Step-by-step explanation:

You can separate this figure into three rectangles. The area of the first rectangle is 20. The area of the second rectangle is 6. And the area of the third is 18. If you add those all together you get 44 cm^2

Answer:

Perimeter = 588ft (given), Width of yard = 73ft

Step-by-step explanation:

The distance around a yard is the perimeter of the yard, so we know that the perimeter of the yard is 588ft. In order to find the length and width, we need to make an equation so we can solve for one of them. Since the length is 2 more than 3 times the width, we can represent it as 3w+2, where w is the width. This ensures we only have one unknown to solve for as we only have one equation. Since perimeter is the distance around the yard, it is calculated by adding the length of the 2 widths to the length of the 2 lengths, hence 588ft = 2w + 2l, the l we replace though as we can only solve for one unknown, so now we have:

2w + 2(3w+2) = 588

Now we can start solving for the width!

Firstly we need to expand the bracket which we do by multiplying the 2 by all the contents inside the bracket, so:

2w + 2*3w + 2*2 = 588

which equals:

2w +6w +4 = 588

Now we combine terms and move the 4 to the other side so we can solve for w:

8w + 4 -4 = 588 - 4

8w = 584

Now we just divide both sides by 8 to get:

w=73

The width of the yard is 73ft.

Hope this helped!

Answer:

≈ 8000

Step-by-step explanation:

Step 1: Round 198

198 ≈ 200

Step 2: Round 42

42 ≈ 40

Step 3: Multiply

200(40) = 8000

Real answer is 8316.

Answer:

[tex]k(2) = 3[/tex]

[tex]t = 4[/tex]

Step-by-step explanation:

Given

[tex]k(t) = 2t - 1[/tex]

Solving (1): k(2)

Take t as 2 such that t = 2

This gives

[tex]k(2) = 2 * 2 - 1[/tex]

[tex]k(2) = 4 - 1[/tex]

[tex]k(2) = 3[/tex]

Solving (2): k(t) = 7

Substitute 7 for k(t)

[tex]7 = 2t - 1[/tex]

Add 1 to both sides

[tex]7 + 1 = 2t - 1 + 1[/tex]

[tex]2t = 8[/tex]

Divide both sides by 2

[tex]t = \frac{8}{2}[/tex]

[tex]t = 4[/tex]

There is no solution. The output of this equation is equal to -10 = 0 which is obviously not true.

Isolate the variable Y by multiplying 1.5 on both sides.

[tex]Y=1.6*1.5[/tex]

[tex]Y=2.4[/tex]

Hope this helps.

頑張って!

Answer:

y=2.4

Step-by-step explanation:

You need to get Y alone so just multiply it with the reciprocal: 1.5/1 on both sides. This cancells out the denominator and just multiplies 1.6 with 1.5 to get 2.4

Answer: 9

do the 3 times table

Step-by-step explanation: if 3 in 1 than 9 in 3

hoped this helped let me know if it did

Answer: 5 calories

Step-by-step explanation:

Given the data:

Minute ____calorie burned

40__________200

80__________400

120_________ 600

160_________ 800

We need to find the rate at which calorie is burned :

Rate of burn = (Number of calorie burned/ time taken)

Take any of the points :

Time = 80 ; calorie burned = 400

Rate of burn = (400 calorie / 80 minute )

Rate of burn = 5calorie/minute

If time = 1 minute ; rate = 5

Calorie burned in 1 minute :

Amount of calorie = rate of burn × time taken

Amount burned in 1 minute = 5 × 1 = 5 calories

Hence, amount of calorie burned in one minute is 5 calories.

Answer:

5

Step-by-step explanation:

Maps Testing I have done it.

Answer:

All Real Numbers

Step-by-step explanation:

[tex]f(x)=6x^2+2[/tex]

To find the domain of a  quadratic function, we can make a table.

x     y     f(x)=6x^2+2

-1     8    6(-1)^2+2

0     2        6(0)^2+2

1       8  6(1)^2+2

You can keep going and identity that all the x values/ domains are real numbers.

Answer:

x=1

Step-by-step explanation:

Answer:

6=6x (x=1)

Step-by-step explanation:

7x-3+3x=4 (4x-1)-5

7x-3+3x=16x-4-2

So I have just multiplied out the brackets on the right side 4×4x and 4×1.

7x+3x=16x-4-2

Here I have just added the -3 from the left onto the right changing it to a positive and onto the -5 therefore getting -2.

10x=16x-3

Now I just added the numbers together on each side like 7x+3x and -4-2.

10x+6=16x

This is just moving the -6 onto the left side so we get a positive 6.

6=6x

I have simply done 16-10.

Answer:

En caso de un tamaño de producción de 19,200 toneladas anuales, el costo de inversión total ascenderá a $3,999,936.

Step-by-step explanation:

Dado que la inversión inicial será de $ 2,500,000 para un tamaño de planta de 12,000 toneladas anuales, se estima que cada tonelada requiere una inversión de $208.33 (2,500,000 / 12,000).

Por lo tanto, en caso de una producción anual de 19,200 toneladas, el costo de inversión aumentará según lo establecido en la siguiente multiplicación:

208.33 x 19,200 = X

3,999,936 = X

Por lo tanto, en caso de un tamaño de producción de 19,200 toneladas anuales, el costo de inversión total ascenderá a $3,999,936.

7(n+7)^2

seven times the number and seven squared

(-2,2)

Just took the quiz, this is 100% correct.

Please mark brainliest! :)

The constant function is - f(x) = -2 in the interval  x ∈ [-2, 4].

We have a graph of a function f(x).

We have to determine the interval on which this function is constant.

A constant function is a function having the same value of range for different values of the domain. Mathematically -

y = f(x) = k     [ k is constant ]

According to the question, we can see from the graph that -

The value of f(x) is constant, and is equal to f(x) = -2 between the points -2 and 4 on the x - axis.

The function in this interval can be given by -

f(x) = -2          where  x ∈ [-2, 4].

Hence, the constant function is - f(x) = -2 in the interval  x ∈ [-2, 4].

To learn more about constant functions, visit the link below-

https://brainly.com/question/19595873

#SPJ2

Answer:

x=10

Step-by-step explanation:

I believe if you're trying to solve for x and the two lines are the same length, you just have to set the values equal to each other and solve.

Step-by-step explanation:

12 =x+3

x=9

3x -11

3(9) - 11

27-11

=16

Answer:

0.1

Step-by-step explanation:

hope this helps

Answer:

X=5

Step-by-step explanation:

Answer:

This image will help!

Thanks and have a good day.

Answer:

77 would be the right answer

Answer:

2 + 8 -7 = 3

Hope it helps.......

Answer:

1:2

Step-by-step explanation:

Answer:

3 + 6m

Step-by-step explanation:

If you are just trying to get a simplified term, then follow these steps.

10 - (6m + 7)

10 - 7 + 6m

3 + 6m

Answer:

310

Step-by-step explanation:

least money 19.95

Most money = 39.95

Mean = (least+most)/2 = 29.95

money for half people = 5 × (mean) 29.95

Amount of money for half people = 149.75

Lower limit for amount of the other half = 19.95 × 5 = 99.75

The Upper limit for the amount of the other half = 39.95 × 5 = 199.75

Mean = (99.75 + 199.75)/2 = 149.75

Total money spent (Mean) = 149.75 + 149.75 = 299.5

The Best estimate is B) 310 because it is closest to 295.5

A mean is an arithmetic average of a set of observations. The correct option is D.

A mean is an arithmetic average of a set of observations. It is given by the formula,

Mean = (Sum of observations)/Number of observations

To make the calculations easy let's round off the given numbers. Therefore, we can write the values as,

Now, the mean and the money for half the people can be written as,

Mean = (least + most)/2 = 60

money for half people = 5 × 60

Therefore, the amount of money for half people will be,

Amount of money for half people = 300

Lower limit for amount of the other half = 29.95 × 5 = 149.5

The Upper limit for the amount of the other half = 89.95 × 5 = 449.75

Mean = (149.75 + 449.75)/2 = 299.6

Total money spent (Mean) = 299.6 + 299.6 = 599.25

Hence, The Best estimate is $660. This is because it is closest to 599.25.

Learn more about Mean here:

https://brainly.com/question/15397049

#SPJ2

Step-by-step explanation:

1. 7 (-6)=42

after 7 weeks the price will be reduced by 7 time

the price will be reduced $42

Step-by-step explanation:

4.5 * 4 = 18.

3 + 4 + x + y = 18, x + y = 11.

5 * 4 = 20

2x + y + 4 + 3 = 20, 2x + y = 13

Hence, x = 2 and y = 9.

Answer: D

Step-by-step explanation:

Answer:

Step-by-step explanation:

2.38 km x 10^4 = 23,800 decimeters