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zalisa [80]
3 years ago
15

Mona wants to buy carpet for a floor in her house.

Mathematics
1 answer:
Gnesinka [82]3 years ago
7 0
What are the prices?
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The question is.......
Hunter-Best [27]

multiply the 2 numbers together than divide by 2

7 1/2 = 15/2

12 2/3 = 38/3

15/2 * 38/3 = 570/6 =95

95/2=47.5 square feet

5 0
3 years ago
Read 2 more answers
Find x.______________a0
velikii [3]

Answer:

x=4

Step-by-step explanation:

Before we find x, we need to set up this triangle a little more. We need to find the triangle's altitude before we can solve for x. We will use the heartbeat method to find the altitude.

Let altitude = y; solve for y:

\frac{2}{y}=\frac{y}{6}

y^2=12

y=\sqrt{12}

y=2\sqrt{3}

Now that we know the altitude, we can use the Pythagorean Theorem to find the hypotenuse (x).

a^2+b^2=c^2

2^2+(2\sqrt{3})^2=c^2

4+12=c^2

c^2=16

c=4

Since c and x are the same; c is just the hypotenuse in the Pythagorean Theorem.

x=4

4 0
3 years ago
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
What is it s vertex? nn
Fynjy0 [20]

It’s 23 because i did the calculation and i also did a little bit of this alit tule bi tof that and done

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What is half of 55? I need it now
mario62 [17]
To find the half of any number you just have to divide that number by 2. Lets do it, and then check our work:-

55 ÷ 2 = 27.5
The half of 55 is, 27.5.

CHECK OUR WORK:-

27.5 × 2 = 55
We were RIGHT!!!

So, the half of 55 is 27.5.

Hope I helped ya!! xD
3 0
3 years ago
Read 2 more answers
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