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3 years ago

Solve x.WILL GIVE BRAINLIEST

Mathematics

1 answer:

Gnesinka [82]3 years ago

6 0

Answer:

What’s this called again? And do u possibly know the formula for this? I just need these elements to solve it... plz reply

Step-by-step explanation:

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Help on this one please

kvv77 [185]

Answer:

d ≈ 1732 ft

Step-by-step explanation:

Angle of elevation = Angle of depression

Following this truth,

m∠PAQ (Angle of depression) = m∠APB (Angle of elevation) = 30°

By applying tangent rule in the given triangle ABP,

tan(30°) = $\frac{AB}{PB}$

$\frac{1}{\sqrt{3}}=\frac{1000}{d}$

d = 1000√3

d = 1732.05

d ≈ 1732 ft

6 0

3 years ago

Turn this recurring decimal, 0.545545545, to a fraction in its lowest form.

professor190 [17]

54554/99999. I think I am right but sorry if I am wrong.

8 0

3 years ago

An orange has about 1/4 cup of juice. How many oranges are needed to make 2 1/2 cups of juice? Select all equations that represe

san4es73 [151]

A and D are correct. To understand this, you need to know that this scenario gives us a total (2 1/2 cups) and a part (1/4). When you have these 2 pieces of information you have either a division problem with a total divided into parts (choice D) or you have one part and a totol shown as a multiplication problem (choice A).

7 0

3 years ago

Read 2 more answers

at a maximum speed, an airolane travels 1680 miles against the windin 5 hours. Flying with the wind, the plane can travel the sa

Licemer1 [7]

Answer:

Plane Speed (x) = 378 mph

Step-by-step explanation:

Equation

d = r * t

Givens

With the wind

d = 1680 miles
t = 4 hours
r = x + y

Against the wind

d = 1680
t = 5 hours
r = x - y

Equation

The distances are the same, so you can solve for x in terms of y and then deal with the actual distance.

(x + y)*4 = (x - y)*5 Remove the brackets on both sides

Solution

4x + 4y = 5x - 5y Subtract 4x from both sides
4y = -4x + 5x - 5y Combine
4y = x - 5y Add 5y to both sides
5y + 4y = x
x = 9y

Solution part 2

Now take one of the distance formulas and solve for x first then y.

(x - y)*5 = 1680 Substitute 9y for x
(9y - y)*5 = 1680 Subtract on the left
8y * 5 = 1680 Multiply on the left
40y = 1680 Divide by 40
y = 1680/40
y = 42 That's the speed of the wind.

(x - y)*5 = 1680 Substitute the wind speed for y
(x - 42)*5 = 1680 Divide both sides by 5
(x - 42) = 1680 / 5 Do the division on the right
(x - 42) = 336 Add 42 to both sides.
x = 336 + 42
x = 378 mph Plane's speed

7 0

4 years ago

A government bureau publishes annual price figures for new mobile homes. A simple random sample of 36 new mobile homes yielded t

Oliga [24]

Answer:

The 99.7% confidence interval for the mean price of all new mobile homes is ($60,672, $65,622).

Step-by-step explanation:

The question is incomplete:

The prices in thousands of dollar are:

66.6, 69.8, 58.4, 57.3, 63.1, 61.8, 56, 72.7, 61.8,

66.9, 72.6, 63.1, 58.7, 65.9, 61.1, 56.1, 49.9, 72.6,

49, 56.4, 72.6, 60.1, 65, 64.8, 56.5, 52, 53.2,

56.4, 75.4, 76.3, 60.5, 74.6, 57, 69.2, 62.7, 77.2.

We have a sample of n=36 new mobile homes.

The mean of this sample is:

$M=(1/36)\sum_{i=1}^{36}x_i=\dfrac{2273.3}{36}=63.147$

The population standard deviation is σ=7.5 (in thousands of dollars).

The critical value of z for a 99.7% CI is z=2.97.

Then, we can calculate the margin of error as:

$E=z\cdot \sigma/\sqrt{n}=2.97*7.5/\sqrt{36}=22.275/9=2.475$

Now we can calculate the lower and upper bound of the confidence interval as:

$LL=\bar X-E=63.147-2.475=60.672\\\\UL=\bar X+E=63.147+2.475=65.622$

The 99.7% confidence interval for the mean price of all new mobile homes is ($60,672, $65,622).

8 0

3 years ago

Solve x.WILL GIVE BRAINLIEST​

Solve x.WILL GIVE BRAINLIEST