A section of roller coaster track forms of parallelogram a b c and d if a B and C equals 72 degrees what is d a b

What number can be written as 9 tens and 1 one

irinina [24]

91 is the answer because you put the 9 and the 1 together and it makes 91

5 0

2 years ago

Aiko stands 5 m from a tree. At that distance, the angle of elevation from the ground to the top of the tree is 80°.

denis23 [38]

Answer:

$\boxed {\boxed {\sf About \ 28.36 \ meters }}$

Step-by-step explanation:

Assuming the tree is perpendicular to the ground, we can use the right triangle trigonometric ratios to find the tree's height.

sin(θ)= opposite/hypotenuse
cos(θ)= adjacent/hypotenuse
tan(θ)= opposite/adjacent

Now, let's draw a diagram. We know Aiko is 5 meters from the base of the tree. From there, the angle to the top of the tree is 80 degrees. We are looking for x, the tree's height. The diagram attached is not to scale.

We base the sides off of the angle. x is opposite of 80 degrees and 5 is adjacent. Therefore we must use tangent.

$tan(\Theta)=\frac{opposite}{adjacent}$

opposite=x
adjacent=5 m
θ=80

Substitute in the known variables.

$tan(80)=\frac{x}{5 \ m }$

We want to find x, the height of the tree. Therefore we need to isolate that variable.

x is being divided and the inverse operation is multiplication. Multiply both sides of the equation by 5 meters.

$5 \ m* tan(80)=\frac{x}{5 \ m }* 5 \ m$

$5 \ m* tan(80)=x$

$5 \ m *5.67128182=x$

$28.3564091 \ m = x$

The question asks for an approximation, so let's round to the nearest hundredth.

The 6 in the thousandth place tells us to round the 5 to a 6.

$28.36 \ m \approx x$

The tree is about 28.36 meters tall.

3 0

2 years ago

Help please due today No links

GarryVolchara [31]

See the answer in the image

4 0

1 year ago

6x-y=8 7x-y=9 Solve linear systems by Multiplying first

Sindrei [870]

The answer is (1,-2). Here’s the work

4 0

2 years ago

Six friends create a website. The website earns money by selling banner ads. The site has 5 banner ads. It costs $120 a month to

Naddik [55]

Answer:

A.) y = 0.005x - 120

B.) You need more than 24,000 clicks to make a profit, or at least 24001 clicks.

Step-by-step explanation:

A.)

1. We know that the amount of money for each click is $0.005, which means that that's the amount of money you need to multiply by the number of clicks (or x) to find the amount of money you're making from the ads.

2. We also know that the cost to keep the website up is 120$, which is a loss of 120 dollars. To find the total profit in a month, you have to subtract whatever the profit from ads was by 120.

3. Since the amount from ads is 0.005 * x minus the cost of the website to be up, 120, the equation for the profit (or y) would be y = 0.005x-120

B.)

Next up is graphing it:

Geometry Way:

1. You can use any online graphing program, or hand graph it (I'll link one that I use in the comments--- Desmos).

2. Graph the equation.

3. Find the value in which that the profit would be 0. Anything more than that would be all of the values in which y is not 0 or negative.

Algebra Way:

1. Plug in 0 for y, or the profit.

2. Simplify. You'll find that when the profit is 0, the amount of clicks would be 24,000. Anything more than that would be positive.

Hope this helped!

7 0

2 years ago