5 points

An airplane approaches an airport. At a certain time, the plane is 1020m

high. Its angle of elevation measured from the airport is 20.5 degrees.

How far is the plane from the airport to the nearest meter? *

A-2728

B-2913

C-1089

D-3

Answer:

Step-by-step explanation:

2. y interecept --> y = 1

3. pi

4. 1, 0

Answer:63

Step-by-step explanation:

 multiply 72 by 7 then divide i by 8

(72×7)/8

=63

It's 63.

simplify the equation 7/8×72 multiple 7×9 solution is 63

Answer:

Leila has 10$

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

List all the factors for 15 ( 1and 15) (3 and 5) use a number thats is bigger than Leila's but not bigger than Jo's the only one is 3, multiply 2 and 3, and 3 and 3 your numbers should be 6 (2x3) and 9 (3x3) add them together to make 15 then you got it.

Answer:

Let's start by using variables to represent the ages of the three people:

Let L be Liz's age.

Let D be Debbie's age.

Let F be Freya's age.

From the problem, we know that Liz's age is two-thirds of Debbie's age, so we can write:

L = (2/3)D

We also know that Debbie's age is half of Freya's age, so we can write:

D = (1/2)F

To find the ratio of Liz's age to Freya's age, we need to express Liz's age and Freya's age in terms of a common variable. Since we have an equation relating Debbie's age to Freya's age, we can use that as the common variable. From the equation D = (1/2)F, we can solve for F in terms of D:

F = 2D

Now we can substitute this expression for F into the equation for Liz's age:

L = (2/3)D = (2/3)(1/2)F = (1/3)F

So Liz's age is one-third of Freya's age. The ratio of Liz's age to Freya's age is therefore 1:3.

Answer:

The answer would be 480

Step-by-step explanation:

The first step is to find out 20% of 600 and that would equal 120, the next step is to subtract 120 from 600 and the answer is 480.

Answer:

480

Step-by-step explanation:

If the number increased by 20% we can decrease it by 20% to get our number before it was increased.

20% of 600 is 120

600-120=480

Answer: The Pyramid has 2 pairs of congruent faces

Step-by-step explanation:

The explanation of congruent is the face has the same shape and same size. On rectangle pyramid, the height triangle are 2 same faces and 2 same faces, so it has 2 pairs of congruent faces

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

For the first equation,

h-3=9, we need to put all the knowns (numbers) on one side and all the variables on the other side. because equations are like a scale, if we do the same thing to both sides of the equation, the equation will still be true. for this equation, if we add 3 to both sides, we will get:

h-3+3=9+3

this can be simplified to:

h=12

this is your answer.

For the second equation,

we can apply the same principle for the first equation to the second equation.

1/2 x h = 10

can also be written as:

1/2 of h = 10

we can multiply both sides by 2 to get:

1h=20

or

h=20

Answer: Tiana can build 12 swings in 20 days

Step-by-step explanation:

We know the equation:

y=0.6x

We can replace the variables.

y=0.6 x 20     (here, im using the x as a multiplication sign)

Now we calculate...

y=12

Answer: Tiana can build 12 swings in 20 days

Answer:7,065

Step-by-step explanation: 50x75x3.14 then subtract 20x75x3.14

Answer:

y = 70x + 35

Step-by-step explanation:

$75 - $5 = $70 (this is the amount charged minus the amount needed to get the job done per car wash)

the +35 is the tips extra/ constant that will be added after the jobs are done.

x is the amount of car washes done

y would be the profit received.

thus y = 70x + 35 (profit = value of car wash * number of cars washed + tips)

Answer:

Step-by-step explanation:

Profit = Income less outgo

         = (car wash income + tips) - (supplies)

$250 = ($75n + $35) - ($5n), or

$215  = $70n     (where n represents the number of cars washed)

This comes out to n = $215/$70, or approximately 3 car washes.

Answer:

10 3/4

Step-by-step explanation:

\(x + \frac{7}{4} = - \frac{5}{2} \times - \frac{5}{1} \\ x = \frac{25}{2} - \frac{7}{4} \\ x = \frac{43}{4} \\ x = 10 + \frac{3}{4} \)

Answer:

-7-(-4)= -3

Step-by-step explanation:

Subtracting a negative number from a negative number – a minus sign followed by a negative sign, turns the two signs into a plus sign. So, instead of subtracting a negative, you are adding a positive.

Answer:

y= 1/2x + 1

Step-by-step explanation:

Refer to y=mx+b, m=slope and b= y-intercept

First, you find the slope: you can find the slope by finding the rise over run between two points. Rise= 1, Run=2. The slope is rise/run (rise over run), so the slope would be 1/2 (one half).

Next, find the y-intercept. It is where the line touches the y-axis. Here, it would be 1.

Finally, put these in y=mx+b form:

y=(slope)x+(y-intercept) ---> y= 1/2x + 1

I tried my best to explain everything, I hope you found this helpful!

Answer:

jazz

Step-by-step explanation:

ok so just multiply all of the numbers together then divide by 2 use a calculater if neccesary

Answer:

5016

Step-by-step explanation:

5500 - 324(area of pool)=5176

5176-160(area of walkway)=5016

Answer:

One-fifth times one-fifth times one-fifth times one-fifth = StartFraction 1 Over 625 EndFraction

Step-by-step explanation:

1/5^4 = 1/5 * 1/5 * 1/5 *1/5 = 1/625

The expanded form of (One-fifth)⁴ is "StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction," and its value is "StartFraction 1 Over 625 EndFraction."

              The expanded form of (One-fifth)⁴ can be derived by multiplying (1/5) four times. Each multiplication represents multiplying by one-fifth, resulting in "StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction." This can be further simplified as "StartFraction 1 Over 625 EndFraction" by multiplying the numerators and the denominators separately.

              In mathematical terms, when we raise one-fifth to the power of 4, we are essentially multiplying one-fifth by itself four times. Thus, (One-fifth)⁴ is equal to "StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction."

            Evaluating this expression yields the value "StartFraction 1 Over 625 EndFraction" since multiplying the numerators (1 * 1 * 1 * 1) and the denominators (5 * 5 * 5 * 5) results in 1 and 625, respectively.

           Mathematical representation:  \(\frac{1}{5}^4= \frac{1}{5} * \frac{1}{5} * \frac{1}{5} * \frac{1}{5}\)

To learn more about expanded form,

https://brainly.com/question/102887

Answer:

D

Step-by-step explanation:

Answer:The lever operates by applying forces at different distances

Step-by-step explanation:

Answer:

I think it's 77 I'm not sure get back to me on it

Answer:

d= 105t

Step-by-step explanation:

What is linear function?

Linear function is the function in which the highest power of the unknown variable is one. Linear functions are used to model the real life problem in the mathematical expressions.

The linear function with dependent variable y and independent variable x can be written as,

Here, (m) is the slope of the function and (b) is the y intercept.

As the car is moving at a constant speed passes a timing device at t=0.

After 8 seconds the car has traveled 840 feet.

To construct the equation of linear function, we have to find the point of it.

One point of the line is (0, 0) as the car move 0 distance at 0 time.

Another point of the line is (8, 840) as after 8 seconds the car has traveled 840 feet.

From the equation of linear line,

Here, the s the distance in the feet, d, the car has traveled any number of seconds, t, after passing the timing device. Thus the function can be written as,

Thus the linear function in the form y=mx+b represents the distance in the feet, d, the car has traveled any number of seconds, t is,

Answer:

|-5| ≠ -5

Step-by-step explanation:

Lets check each one:

-|-5| = -(5) = -5      Correct

-|5| = -(5) = -5       Correct

-(-5) = 5                Correct

|-5| = 5                 Incorrect

Any negative number inside of the absolute value brackets turns positive.

Any positive number inside of the absolute value brackets stays positive.

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

The amount of sales tax is $2.97.

The tax for the shoes: 26.50*0.0825=2.18625

The tax for the shirt: 9.5*0.0825=0.78375

2.18625+0.78375=2.97

pls mark brainliest:))

Answer:

B. 2.97

Step-by-step explanation:

First, add 26.5 plus 9.5 to get the total of the purchase without tax. Then, create a proportion (8.25/100= x/36). multiply 8.25 by 36, and divide the product by 100 to get 2.97. Hope this helps!

Answer:

Mean: 6.5

Median: 6

Mode: 6

Range: 6

Minimum: 4

Maximum: 10

Step-by-step explanation:

The mean is the same as the average value of a data set and is found using a calculation. Add up all of the numbers and divide by the number of numbers in the data set.

The median is the central number of a data set. Arrange data points from smallest to largest and locate the central number. This is the median. If there are 2 numbers in the middle, the median is the average of those 2 numbers.

The mode is the number in a data set that occurs most frequently. Count how many times each number occurs in the data set. The mode is the number with the highest tally. It's ok if there is more than one mode. And if all numbers occur the same number of times there is no mode.

Answer: A

Step-by-step explanation:

im pretty sure its A

Answer:

15 sides

Step-by-step explanation:

As we know the full angles of a polygon is 360°

And

Each side has angle 24°

So,

n = 360/24

n = 15 sides

I hope my answer helps you.

Answer:

By writing an equation 0.50x + 900 = 0.38x + 1500 and solving (you can also write a system of equations)

Step-by-step explanation:

The equation for company A's price is y = 0.50x + 900 ($0.50 per brochure plus flat fee of $900)

The equation for company B's price is y = 0.38x + 900 ($0.38 per brochure plus flat fee of $1500)

The goal is for the cost (y) to be the same so these equations would both have to be equal to each other. Once solving for x you will get 5000 brochures.

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