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Lubov Fominskaja [6]
3 years ago
9

Help me fast please!?!!?!?!

Mathematics
2 answers:
sladkih [1.3K]3 years ago
5 0
The answer for the question is 31
Amiraneli [1.4K]3 years ago
3 0
It would be 31. After each term, you are adding the next even number. Ex. 1 + 2 = 3. 3 + 4 = 7. 7 + 6 = 13. 13 + 8 = 21. 21 + 10 = 31.
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in mrs. wallace class's science class, 1/2 of the students are boys. Of the boys , 1/8 are left- handed. what fraction of the st
o-na [289]

Answer:

1/16 of the class are left handed boys but we do not know the amount of left handed girls so we cannot be sure.

Step-by-step explanation:

1/2 * 1/8 = 1/16

there is still no way to be sure of how many girls are left handed so you should probably make a note by the problem so the mistake on the test will be realized

4 0
3 years ago
A Ferris wheel has a radius of 10 m, and the bottom of the wheel passes 1 m above the ground. If the Ferris wheel makes one comp
Morgarella [4.7K]

Answer:

y = 11 - 10cos(0.1\pi t)

Step-by-step explanation:

Suppose at t = 0 the person is 1m above the ground and going up

Knowing that the wheel completes 1 revolution every 20s and 1 revolution = 2π rad in angle, we can calculate the angular speed

2π / 20 = 0.1π rad/s

The height above ground would be the sum of the vertical distance from the ground to the bottom of the wheel and the vertical distance from the bottom of the wheel to the person, which is the wheel radius subtracted by the vertical distance of the person to the center of the wheel.

y = h_g + d_b = h_g + R - d_c (1)

where h_g = 1 is vertical distance from the ground to the bottom of the wheel, d_b is the vertical distance from the bottom of the wheel to the person, R = 10 is the wheel radius, d_c is the vertical distance of the person to the center of the wheel.

So solve for d_c in term of t, we just need to find the cosine of angle θ it has swept after time t and multiply it with R

d_c = Rcos(\theta(t)) = Rcos(\omega t) = 10cos(0.1\pi t)

Note that d_c is negative when angle θ gets between π/2 (90 degrees) and 3π/2 (270 degrees) but that is expected since it would mean adding the vertical distance to the wheel radius.

Therefore, if we plug this into equation (1) then

y = h_g + R - d_c = 1 + 10 - 10cos(0.1\pi t) = 11 - 10cos(0.1\pi t)

7 0
3 years ago
Work out m and c for the line:2y+6x=4<br><br><br>​
Ray Of Light [21]

Answer:

m = 1/3, c = 2

Step-by-step explanation:

Explained in the paper

8 0
3 years ago
Write a real world problem in which the probability of a compound event occuring is 0.25.
liberstina [14]
You have 4 colored balls, one is red, another blue, green, and yellow. What is the probability of drawing out a red ball?
4 0
4 years ago
There are 48 calories of energy in 40g of rice. How many calories are in 160 g of rice?
Rashid [163]
160 grams of rice is four times larger than the given 40 g. 
<span>So the number of Calories must be 4 times larger too. </span>

<span>48 x 4 = 192 Calories in 160 g of rice</span>
5 0
3 years ago
Read 2 more answers
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