an observer 12 m away from the foot of tree observes that the angle of elevation is 30° find the height of tree


anyone send me photo plz​

Step-by-step explanation:

x = ky, where k is a real constant.

When y = 36, x = 24.

=> (24) = k(36), k = 2/3.

Hence x = (2/3)y.

When y = 132, x = (2/3)(132) = 88.

Answer:

see explanation

Step-by-step explanation:

Given x varies directly with y then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition x = 24 when y = 36, then

36 = 24k ( divide both sides by 24 )

1.5 = k

y = 1.5x ← equation of variation

When y = 132, then

132 = 1.5x ( divide both sides by 1.5 )

x = 88

Answer:

Step-by-step explanation:

1)  phone

38.95 = 0.03 * mins + 29.95

9.00 = 0.03 * mins

9.00 /0.03 = mins

300 = mins

so he used 300 minutes  :)

2) books

8.70 =14 * bookPrice + 2.40

6.30 = 14 * bookPrice

6.30 / 14 = bookPrice

0.45 = bookPrice

each book cost 45 cents  :)

Answer:

[tex]a2 + 5a + 4 \: \: when \: a = 3 \\ = (3)2 + 5(3) + 4 \\ \\ = 6 + 15 + 4 \\ = 25[/tex]

[tex]a2 - 5a \: \: when \: a = 3 \\ = (3)2 - 5(3) \\ = 6 - 15 \\ = - 9[/tex]

Answer:

6.3cm

Step-by-step explanation:

10mm=1cm

63mm=?cm

(cross multiply)

?=(63mm×1cm)/10mm

?=6.3cm

Answer:

1.28 gallons

Step-by-step explanation:

Multiply 14 and 8 then multiply that by 4 for each wall. Divide that number by 350 to get the number of gallons

brainliest please

Answer:

Step-by-step explanation:

Given the equation

For the equation to have infinitely many solutions, both sides of the equation should be same.

Correct option is D

Answer:

Monthly deposit= $262.062

Step-by-step explanation:

Giving the following information:

Future value= $10,000

Number of periods= 12*3= 36 months

Interest rate= 0.04/12= 0.0033

To calculate the monthly deposit, we need to use the following formula:

FV= {A*[(1+i)^n-1]}/i

A= monthly deposit

Isolating A:

A= (FV*i)/{[(1+i)^n]-1}

A= (10,000*0.0033) / [(1.0033^36) - 1]

A= $262.062

Answer:

B

Step-by-step explanation:

30 + 10 (x - 20) = 5

you cant add the numbers in the parenthesis so you add the first two numbers and distribute.

40 (x - 20) = 5

40x - 800 = 5

Answer:

The mass of the Afghan Hound is exactly what is predicted by the line of best fit.

Answer:

no clue i came to recieve answers

Step-by-step explanation:

Answer:

49

Step-by-step explanation:

Formula for the area of a square is S^2

Plug 7 into the formula

7^2 = 49

Answer:

the question is cut in half

Answer:

y = x + 2

Step-by-step explanation:

slope = Δy / Δx = (1-2) / (-1 - 0) = 1

pass (0,2): y intercept = 2    b=2

y = mx + b

equation: y = x + 2

Answer:

Joe's rate = 7 mph

Ralph's rate = 8 mph

Step-by-step explanation:

Give. That:

Joe's rate = x

Ralph rate = x + 1 kmph

Travel time = 2 hours

Hence, distance traveled = Speed * time

Joe's distance : 2 * x

Ralph's distance = 2 * (x + 1)

2x + 2(x + 1) = 30

2x + 2x + 2 = 30

4x + 2 = 30

4x = 30 - 2

4x = 28

x = 28/4

x = 7

Joe's rate = 7

Ralph's rate = 7 + 1 = 8

Answer:

the estimation of the quotient is  7

Step-by-step explanation:

The computation of estimating the quotient is shown below:

It is given that the number is 27

After that the two-third would be divided by 3

And, then the nine-tenth

Based on the above information, the estimation of the quotient is  

= 27 + 2 ÷ 3 ÷ 3 + 9 ÷ 10

= 27 + 0.67 ÷ 3 + 0.9

= 27.67 ÷ 3.9

= 28 ÷ 4

= 7

hence, the estimation of the quotient is  7

Answer:

The ratio of apples to oranges in the basket is 2:5.

Step-by-step explanation:

the answer is D

Step-by-step explanation:

Total fruit (apples + oranges ) = 125

only oranges = 7/25 of total fruit = (7/25)× 125

7×5= 35 (orange)

then only apples = 125 - 35 = 90

2:5

Answer:

[tex]\textsf{C.} \quad C = \$10 + \$5h[/tex]

Step-by-step explanation:

Given information:

Given variables:

The Park admission fee of $10 is independent of the fee charged per hour per sport.  Therefore, it is represented by a constant in the equation.

The fee per hour of sledding is dependent on the number of hours spent.  Therefore, it is represented by the cost of the specific sport multiplied by the given variable for time (h).

Therefore the equation that represents the cost of sledding per hour is:

C = $10 + $5h

[tex]\huge \boxed{\sf C}[/tex]

Each hour costs 5 dollars for sledding and an extra fee of 10 dollars.

[tex]\sf C = 5h + 10[/tex]

An equation contains variables and integers.

C and h are variables which means the value changes.

5 and 10 are integers.

Answer:

24 pictures for $5

Step-by-step explanation:

To find out the better value, we have to find the price of a singular picture. To do this, we will divide each number by the amount of pictures.

For the first deal, 36 pictures cost $8, so 1 picture costs about $0.22.

For the second deal, 24 pictures cost $5, so 1 picture costs about $0.21.

Since the second deal costs less, it is a better deal.

Answer:

The best deal is 24 pictures for $5.

Step-by-step explanation:

In order to find out which price is better, we need to find the amount of pictures per dollar. This is also known as the unit rate.

36 ÷ 8 = 4.5 or 5 when rounded to the nearest whole number.

24 ÷ 5 = 4.8 or 5 when rounded to the nearest whole number.

However, since 4.8 is in fact higher than 4.5, the best deal is 24 pictures for $5.

Hope this helps! :D

Answer:

Step-by-step explanation:

3

Answer:

‍♂️ but if you know please answer

Answer:

12344567891011121314151617181920

Step-by-step explanation:

12344567891011121314151617181920

Answer:

45 or 1/45

Step-by-step explanation:

not sure

Answer:

To find the slope of a line, we need to know the slope formula. The slope formula is:

m = , with m being the slope and (x₁, y₁) being the coordinates of one point and (x, y) being the coordinates of the other. Now we can substitute the values of the points in our problem ( (-1,-1) and (1, -4) ) into the slope formula. Substituting, we get:

=

==

=-1.5

That means the slope of our line is -1.5

Step-by-step explanation:

Answer:

The value of x is 4.

Step-by-step explanation:

From the image uploaded, line BC is parallel to line AD and 15 is the mid-segment.

The mid-segment of a trapezoid is calculated as;

[tex]15 = \frac{|BC| \ + \ |AD|}{2} \\\\15 = \frac{2x \ + \ (3x\ +\ 10)}{2} \\\\15 = \frac{2x \ + \ 3x \ + \ 10}{2} \\\\15 = \frac{5x \ + \ 10}{2} \\\\5x \ + \ 10 = 2(15)\\\\5x \ + \ 10 = 30\\\\5x = 30 -10\\\\5x = 20\\\\x = \frac{20}{5} \\\\x = 4[/tex]

Thus, the value of x is 4.

Answer:

√3/2

Step-by-step explanation:

We are to find the exact value of the expression below

Cos(Tan^- 1 - (sqrt(3))/3)

Evaluate the one in bracket first

Tan^-1√3/3 = 30°

Cos(Tan^- 1 (sqrt(3))/3) = Cos30°

Now find cos30°

cos30° = √3/2

Hence the value for the trigonometric expression is √3/2

Answer:

80

Step-by-step explanation:

80 is the main score I think.....

Answer:

85

Step-by-step explanation:

Add all of the numbers to get 595

Divide it by the amount of numbers

595/7

Which equals 85

Answer:

0.273 (Approx)

Step-by-step explanation:

Given:

3/11

Find:

Converted to decimal (rounded 3 decimal)

Computation:

⇒ 3/11

⇒ 0.272727

0.273 (Approx)

The value of 3/11 rounded 3 decimal places will be 0.273.

Given that:

Fraction number = 3/11

The decimal number is the combination of an integer number and part of a rational number. The rational number is greater than zero but less than one.

Convert the fraction number into a decimal number. Then we have

⇒ 3/11

⇒ 0.2727

⇒ 0.273

More about the decimal number link is given below.

https://brainly.com/question/4708407

#SPJ6

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Explanation:

If you graphed the equation 2x-5y = 14, you'll find it has a positive slope. It turns out the slope in this equation is 2/5, which is positive. A positive slope means the line goes uphill as you move from left to right. This means we can rule out choice because of this (since we want the line to slope downward).

Now let's turn to choice D. If we multiply both sides of the first inequality by -1, then we go from [tex]-2x-5y \le 14[/tex] to [tex]2x+5y \ge -14[/tex]. Note the inequality sign flips. This always happens when we multiply both sides by any negative number. The inequality [tex]2x+5y \ge -14[/tex] implies that the shaded region will be above the boundary line, but this contradicts the drawing which shows the shaded region is below the diagonal boundary line. We can rule out choice D because of this. Choice A can be ruled out for similar reasoning.

You should find that only choice B is left. The diagonal line is 2x+5y = 14, and we shade below this boundary line, as well as shading to the right of the y axis (to indicate all values have positive x coordinates). Values on the boundary count as solution points as well.

Answer:

a

2

−

b

2

=

(

a

+

b

)

(

a

−

b

)

where

a

=

2

and

b

=

x

.

2

(

2

+

x

)

(

2

−

x

)

Step-by-step explanation:

Answer:

6 gallons   54 fish

Step-by-step explanation:

is she has 12 gallons and in 2 minutes its gone at a steady rate then just divide 12 by 2 so 6 every minute

just 3 multiplied by 18 since hes adding 3 fish every day for 18 days so you could just do 3+3+3+3 for 18 or simpler 3x18

hope this helped

Answer: 6

Step-by-step explanation: