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butalik [34]
3 years ago
7

A bag contains 100 marbles: 30 are red, 25 are green, 15 are blue, 7 are yellow, and the rest are orange.

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
3 0

Answer:

a.25 out of 100 chances

b. 0 out  of 100 chances

c. 30 out of 100 chances

d. 7 out of 100 chances

Step-by-step explanation:

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Can there be more than one mean or mode in a math problem??
astraxan [27]

Math. When no number occurs more than once in a data set, there is no mode. If each of two numbers occurs twice, we say the set is bimodal.
5 0
3 years ago
Finda + b, 8a + 9b, |a|, and |a − b|.(Simplify your answer completely.)a =leftangle0.gif−3, 4rightangle0.gifb =leftangle0.gif9,
alekssr [168]

Answer:

Step-by-step explanation:

Given the following vectors a = (-3,4) and b = (9, -1)

|a| and |b| are the modulus of a and b respectively.

|a| = √(-3)²+4²

|a| = √9+16

|a| = √25

|a| = 5

Similarly;

|b| = √(9)²+1²

|b| = √81+1

|b| = √82

We are to find the following;

a) a + b

a+b =  (-3,4)  +  (9, -1)

a+b = (-3+9, 4+(-1))

a+b = (6, 4-1)

a+b = (6,3)

b) 8a + 9b

8a + 9b = 8(-3,4)  + 9(9, -1)

8a + 9b = (-24,32)  + (81, -9)

8a + 9b = (-24+81, 32+(-9))

8a + 9b = (57, 32-9)

8a + 9b = (57, 23)

c) |a| = √(-3)²+4²

|a| = √9+16

|a| = √25

|a| = 5

d)  |a − b|

To get  |a − b|, we need to get a-b first

Solve for a -b

a-b =  (-3,4)  -  (9, -1)

a-b = (-3-9, 4-(-1))

a-b = (-12, 4+1)

a-b = (-12,5)

Find modulus of a-b i.e   |a − b|,

|a − b| = √(-12)²+5²

|a − b| = √144+25

|a − b| =√169

|a − b| = 13

6 0
3 years ago
I really need help with this ?
quester [9]

Answer:

Answer=44

Step-by-step explanation:

Rectangle: 6x4=24.

Triangle: 4x4=16, and 16/2=8.

Semicircle: Pi x radius squared, so pi x 2 squared is 16.something, and since it's a semicircle, we divide by 2, so it's 8 again.

Overall: 24+8+8=44 cm squared.

3 0
3 years ago
Last year 40 people adopted a manatee through fia's foundation. This year 30% more people adopted a manatee. How many people ado
Natali [406]

____________________________________________________

Answer:

Your answer would be 52 people.

____________________________________________________

Step-by-step explanation:

To solve a problem like this, we would want to find out the TOTAL amount of people after figuring out how much increased.

In the question, it is saying that there was a 30% increase from the 40 people that adopted a manatee last year.

There are two ways to solve this:

First way to solve this, we would need to figure out how much is 30% of 40.

To do that, we would multiply 40 by 0.30

40 × 0.30 = 12

Now we found how much 30% of 40 is. What we have to do now is add 40 and 12 to get the total amount of people that adopted a manatee this year.

40 + 12 = 52

Second way to solve it:

This is probably the more faster way to solve the question like this. We know that the increase was 30%, and that last years number was 40. So we would multiply 40 by 1.3

40 × 1.3 = 52

The second way is probably more quicker than the first, but it's your choice on which way you want to use. They both will give you the same answer at the end.

Your FINAL answer would be 52 people.

____________________________________________________

4 0
4 years ago
Need help with this question
Leto [7]
I'm pretty sure it's 3,000,000, "Basically, if the power is positive, you move the decimal point in the integer that many places to the right ex: 

3.14 x 10 ^ 3 would be 3140. 

If the power is negative, you move the decimal point to the left ex: 

3.14 x 10 ^ -3 would be 0.000314" according to Yahoo
4 0
4 years ago
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