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2 years ago

What is the area in square feet of a triangle with a height of 4.5 and base of 6.6

Mathematics

2 answers:

Andrew [12]2 years ago

4 0

Answer:

14.85

Step-by-step explanation:

The area of a triangle is given by

A = 1/2 bh where b is the base and h is the height

A =1/2 ( 6.6)(4.5)

A = 14.85

N76 [4]2 years ago

4 0

Answer:

( 1/2 × base × height )feet^2

( 1/2 × 6.6×4.5 )feet^2

( 3.3×4.5 )feet^2

14.85 feet^2

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Suppose you have a light bulb that emits 50 watts of visible light. (Note: This is not the case for a standard 50-watt light bul

natali 33 [55]

Answer:

0.049168726 light-years

Step-by-step explanation:

The apparent brightness of a star is

$\bf B=\displaystyle\frac{L}{4\pi d^2}$

where

<em>L = luminosity of the star (related to the Sun) </em>

<em>d = distance in ly (light-years) </em>

The luminosity of Alpha Centauri A is 1.519 and its distance is 4.37 ly.

Hence the apparent brightness of Alpha Centauri A is

$\bf B=\displaystyle\frac{1.519}{4\pi (4.37)^2}=0.006329728$

According to the inverse square law for light intensity

$\bf \displaystyle\frac{I_1}{I_2}=\displaystyle\frac{d_2^2}{d_1^2}$

where

$\bf I_1=$ light intensity at distance $\bf d_1$

$\bf I_2=$ light intensity at distance $\bf d_2$

Let $\bf d_2$ be the distance we would have to place the 50-watt bulb, then replacing in the formula

$\bf \displaystyle\frac{0.006329728}{50}=\displaystyle\frac{d_2^2}{(4.37)^2}\Rightarrow\\\\\Rightarrow d_2^2=\displaystyle\frac{0.006329728*(4.37)^2}{50}\Rightarrow d_2^2=0.002417564\Rightarrow\\\\\Rightarrow d_2=\sqrt{0.002417564}=\boxed{0.049168726\;ly}$

Remark: It is worth noticing that Alpha Centauri A, though is the nearest star to the Sun, is not visible to the naked eye.

7 0

3 years ago

Evaluate the series 2 + 8 + 32 + 128 + 512 + 2048.

Sauron [17]

The answer is C) 2730

7 0

3 years ago

Share 747 pound in the ratio 2:7 betwen tom and ben

Yuliya22 [10]

2p + 7p = 747
9p = 747 divded by 9 = 83
2 * 83 = 166 7 * 83 = 581

Hope it helps

7 0

2 years ago

15 acres decreased by 80%

lawyer [7]

First, you have to find what 80% of 15 is. In order to do that you have to change 80% percent to decimal, which would be .80. Then, multiply .80 and 15 to get 12. Subtract 12 from 15 and your answer is 3.

4 0

2 years ago

Please Answer This, the question is on the picture. it needs to be a fraction

marshall27 [118]

Answer:

x = 33

Step-by-step explanation:

sin 29° = 16/x

x = 33

3 0

2 years ago