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zheka24 [161]
3 years ago
14

Hellllllllllllllllllllllllllp

Mathematics
1 answer:
Evgen [1.6K]3 years ago
5 0

Answer:

f. I and IV only

Step-by-step explanation:

i hope this helps :)

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Plzzz help???????????
uysha [10]

Answer:

Its either C. or D.  

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Jacob mixes ⅓ cup of yellow paint for every ⅕ cup of blue paint to make green paint. How many cups of yellow paint are needed fo
Nana76 [90]

Answer:

\frac{5}{3} cups

Step-by-step explanation:

Jacob mixes \frac{1}{3} cup of yellow paint for every \frac{1}{5} cup of blue paint to make green paint.

The ratio of yellow paint to blue paint =  \frac{1}{3} : \frac{1}{5}

                                                              = 5:3

 \frac{1}{5} cup of blue paint =  \frac{1}{3} cup of yellow paint

 1 cup of blue paint =  \frac{1}{3} ÷ \frac{1}{5} cup of yellow paint

⇒ \frac{1}{3} ÷ \frac{1}{5}

⇒ \frac{5}{3}

Hence, For 1 cup of blue paint needed \frac{5}{3} cups of yellow paint.

8 0
3 years ago
WILL MAKE BRAINLIEST!!! A Ferris wheel has a diameter of 220 feet and the center of the wheel is 125 feet above the ground. The
daser333 [38]
Since the radius of a circle is half its diameter, the radius of our Ferris wheel is r= \frac{220}{2} =110ft

Next, we are going to convert from revolutions per minute to degrees per second.
We know that t<span>he wheel makes a complete turn every 2 minutes, so it makes a complete turn in 120 seconds. Since there are 360° in a complete turn, we can set up our conversion factor:
</span>\frac{1*360}{120}=3 degrees per second 
<span>
Now, lets find the height:
</span>We know that <span>the passenger is at the lowest point on the wheel when t=0; since the wheel is 125 feet above the ground, at t=0 h=125. To find t at the top, we are going to take advantage of the fact that the wheel will turn 180° from the lowest point to the top and that it turns 3° every second:
</span>t= \frac{180}{3}
t=60
Notice that the height at the top is the diameter of the wheel plus the height above the ground, so h=220+125=345.

To model the situation we are going to use the cosine function, but notice that cos (\alpha) is 1 when \alpha =0 and -1 wen \alpha =180. Since we want the opposite, we are going to use negative cosine.
Notice that we want \alpha =180 when t=60, so we are going to use -cos(3t). Next, we are going to multiply our cosine by the radius of our wheel: -110cos(3t), and last but not least we are going to add the sum of the radius of the wheel plus the height above the ground:
h=110+125-110cos(3t)
h=225-110cos(3t)

Now that we have our height function lets check if everything is working:
<span>the passenger is at the lowest point at t=0; we also know that the lowest point is 125 feet above the ground, so lets evaluate our function at t=0:
</span>h=225-110cos(3t)
h=225-110cos(3*0)
h=125 feet 
So far so good. 
We also know that at t=60, our passenger is 345 feet above the ground, so lets evaluate our function at t=60 and check if coincides:
h=225-110cos(3t)
h=225-110cos(3*60)
h=225-110cos(180)
h=345feet 

We can conclude that cosine function that express the height h (in feet) of a passenger on the wheel as a function of time t (in minutes) ) is: h=225-110cos(3t)
8 0
3 years ago
Calculate the sum. 1.075 + 27.105 *
Molodets [167]
I believe the answer is 28.18
5 0
3 years ago
Simplify 5sqrt 12xm^3 <br> Assume x and m are nonnegative
fredd [130]

Answer:

The right answer to your question is the third option

Step-by-step explanation:

            5 √12xm³

             First find the prime factors of 12

   12   2

     6   2

    3    3

     1             Then 12 = 2² 3

   and m³ = m m²

So    5 √ 2² 3 x m m²

and   5 (2)(m) √ 3xm

         10 m √ 3xm

5 0
3 years ago
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