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3 years ago

How many square inches are in 60 square feet?

Mathematics

2 answers:

asambeis [7]3 years ago

9 0

There are 8640 sq in. Hope I helped!

ASHA 777 [7]3 years ago

5 0

Question:
How many square inches are in 60 square feet?

Answer:
8640 square inches

-Brainly Answere

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In traveling across flat land, you notice a mountain directly in front of you. Its angle of elevation (to the peak) is . After y

Alla [95]

Answer:

In traveling across flat land, you notice a mountain directly in front of you. Its angle of elevation (to the peak) is 3.5°. After you drive x = 13 km closer to the mountain, the angle of elevation is 9°. Find the height of the mountain (round to one decimal place). Just enter the height value with one decimal. Do not enter the unit.

The height of the mountain is 1.2 km without unit it is only 1.2

Step-by-step explanation:

Given:

Two angle of elevation.

We have to find the height of the mountain.

Let the height be "h" .

Note:

Angle of elevation will increase as we move closer to the object.

Considering the distance from 3.5 ° as (13+x) km

Using trigonometric ratios:

For adjacent side "x".

⇒ $tan(\theta) = \frac{opposite}{adjacent}$

⇒ $tan(9) = \frac{h}{x}$ ...equation (i)

⇒ $x\times tan(9) = h$ ...equation (ii)

For adjacent side "(13+x)"

⇒ $tan(\theta) = \frac{opposite}{adjacent}$

⇒ $tan(3.5) = \frac{h}{13+x}$ ...equation (iii)

Dividing equation (i) and (iii).

⇒ $\frac{tan(9)}{tan(3.5)} =\frac{h}{x}\times \frac{13+x}{h}$

⇒ $2.58 =\frac{13+x}{x}$ ...cross multiplication

⇒ $2.58x=13+x$

⇒ $2.58x-x=13+x-x$ ...subtract x both side

⇒ $1.58x=13$

⇒ $x=\frac{13}{1.58}$

⇒ $x=8.22$ km

Plugging x=8.22 km in equation (ii) we can find h that is the height of the mountain.

So,

⇒ $x\times tan(9) = h$

⇒ $8.22\times 0.15 =h$

⇒ $1.23 = h$

The height of the mountain is 1.23 km with one decimal it is 1.2 km only.

4 0

3 years ago

48% of US adults have very little confidence in newspapers you randomly selected 10 US adults. Find the probability that the num

aivan3 [116]

Answer:

$P(x = 5) = 0.2441$

Step-by-step explanation:

Given

$p = 0.48$ --- proportion that have very little confidence

$n = 10$ --- sample

Required

Determine the probability that exactly 5 have very little confidence

This question will be solved using binomial probability:

$P(x) = ^nC_xp^x(1-p)^{n-x}$

In this case: x = 5.

So, we have:

$P(x = 5) = ^{10}C_5*0.48^5(1-0.48)^{10-5}$

$P(x = 5) = ^{10}C_5*0.48^5*0.52^5$

$P(x = 5) = 252*0.48^5*0.52^5$

$P(x = 5) = 0.2441$

7 0

2 years ago

Find the value of x.

bekas [8.4K]

Answer:

$x=7$

Step-by-step explanation:

The sum of exterior angles of a polygon is equal to 360 degrees
$(12x+37)+(12x-2)+(20x-29)+46=360\\12x+12x+20x+46+37-29-2=360\\44x+52=360\\44x+52-(52)=360-(52)\\44x=308\\x=7$