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Furkat [3]
4 years ago
9

3. picking a red marble from 4 white marbles and 7 green marbles

Mathematics
1 answer:
Anuta_ua [19.1K]4 years ago
6 0

Answer:

the probability of picking the red marble = 8.33%

Step-by-step explanation:

picking a red marble from 4 white marbles and 7 green marbles

total marbles = 1 red + 4 white + 7 green

total = 12 marbles

<u>the ratio of picking 1 red marble over 12 marbles </u>

is 1 / 12 = 0.083 x 100%

= 8.33 %

therefore,

the probability of picking 1 red marble = 8.33%

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A bacteria colony is quickly growing in a petri dish. The number of bacteria, y , is modeled by the function y=2(10)^2 where x i
koban [17]

Answer:

C = 159600

Step-by-step explanation:

Because its Y=2 (10) square so times by its self.

7 0
4 years ago
I'm offering 10 points, only answer if you're smart
Vera_Pavlovna [14]
Challenge accepted!!
This is more simple than you think, it's actually quite similar to that of diameter and radius, except this is triangles instead of circles. 

The "centroid" of a triangle is known as the center of mass, everything around it is perfectly evenly balanced from that point, and for triangles, it's the point of intersection for all medians. Now, when dealing with the centroid of triangles, there is a rule that always applies to every median: the distance from a vertex of the triangle to the centroid is ALWAYS twice that of the distance to the midpoint, which would be on the side opposite of the chosen vertex. 

Let's call the identified side "B", the Centroid "A" and the Vertex "C"

Point B to point A is half the distance of point A to point C, as point B occurs on the opposite side of point C. 

This is the same for EVERY median. You could choose any line, and any vertex, and the answer would be the same. The side, if it's opposite of the vertex, is always half the distance to the centroid as the Vertex to the centroid is. 

Your answer A "Twice"

~Hope you better understand, and that this helped!
7 0
3 years ago
Which of the following pairs could be reasonable approximations for the diameter and circumference of a circle? 18 inches and 57
chubhunter [2.5K]

Answer:

18 inches and 57 inches

Step-by-step explanation:

The diameter and the circumference of a circle are proportionate to each other.

The circumference of a circle will always be the diameter times \pi. We know this because the circumference of a circle is represented as

2 \pi r

Since the diameter is twice the radius, we multiply the radius by 2 - there's already a \cdot 2 in this equation, so c = \pi d.

1st option: 18\cdot3.14 = 56.52, this is close to 57 so it's reasonable.

2nd option: 3\cdot 3.14 = 9.42, this isn't close to 28 at all.

3rd option: 33 \cdot 3.14 = 103.62, this isn't close to 80 at all.

So the 1st option is reasonable.

Hope this helped!

5 0
3 years ago
Read 2 more answers
Compute the standard deviation of the following set of data to the nearest whole number: 8, 12, 15, 17, 18
attashe74 [19]
We have that

set of data [<span>8, 12, 15, 17, 18]

step 1
Find the mean
</span>[8+ 12 + 15 + 17 + 18]/5-------> 70/5------> 14

step 2
 for each number: subtract the Mean and square the result
(8-14)²----->36
(12-14)²----> 4
(15-14)²----> 1
(17-14)²----> 9
(18-14)²----> 16

step 3
<span> work out the mean of those squared differences
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step 4
</span><span>Take the square root of that
</span>standard desviation=√13.2-----> 3.63-------> 4

the answer is
4
7 0
3 years ago
Ax- bx &gt; 2a-2b<br><br>solve for x​
Dima020 [189]

Answer:

If a<b, x<2

If a>b, x>2

Step-by-step explanation:

ax-bx>2a-2b, (a-b)x>2(a-b)

If a>b, x>2(a-b)/(a-b)=2

If a<b, x<2(a-b)/(a-b)=2

3 0
3 years ago
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