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adelina 88 [10]
3 years ago
10

Can someone please help 3x+3(x+y)

Mathematics
2 answers:
GrogVix [38]3 years ago
8 0

Hope you understand :)

arsen [322]3 years ago
5 0

Answer:

6x +3y

Step-by-step explanation:

3x + 3(x+y)

3x + 3x +3y

6x +3y

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0.18 repeating fraction in the simplest form.
Triss [41]

Answer:

2/11

Step-by-step explanation:

Let's say our fraction is x = 0.1818181818...

The trick is to multiply x by 10²=100 in this case, since there are two repeating digits, and then subtract the original x.

So, in fact you are subtracting 0.181818 from 18.181818 which effectively cancels the entire bit after the decimal point.

You get:

100x - x = 18

Which you can solve:

99x = 18

x = 18/99 = 2/11

6 0
3 years ago
How to I solve problem 1?
Verdich [7]
#1

The uniforms are numbered 0, 1, 2, ..., 99. That's 100 numbers. Half of them are odd and half of them are even. So the probability that any one of the uniforms is odd is 1/2 just like the probability that any one uniform is even is 1/2.

(a) The numbers on the uniforms are independent of one another. That is, the number of her cross-country uniform does not in any way determine the number on her basketball uniform and vice versa. This means that we can find the probability that each is odd and multiply these together using what is called the counting principle. The probability that all are odd is:
(1/2)(1/2)(1/2)=1/8

(b) This is done the same way we did part (a). Since the probability of any one uniform being odd is the same as it being even (1/2), the answer here is the same: (1/2)(1/2)(1/2)=1/8

(c) This problem differs from that in (a) and (b). There is only one way for all three uniforms to be odd numbers: (odd, odd, odd) or all even (even, even, even). However, there are multiple ways for the uniforms to be two odd and one even. If the uniforms are listed in order: cross-country, basketball, softball we can get exactly one even in any of three ways:
even, odd, odd
odd, even, odd
odd, odd, even
The probability for any one of these possibilities is (1/2)(1/2)(1/2)=1/8 but since there are three way the probability that we get even exactly once is equal to (3)(1/8) = 3/8
7 0
3 years ago
What is the answers to <br>8x-2-5x+7= ​
Ludmilka [50]

Answer: 3x +5

Step-by-step explanation:

Group the variables first 8x-5x is 3x. Then look at the numbers -2+7 is 5.

You can't combine letters and numbers so it's as far as you can go.

3 0
3 years ago
The average commute time to work (one way) is 25 minutes according to the 2005 american community survey. if we assume that comm
xz_007 [3.2K]
We have

Mean, μ = 25 minutes
Standard Deviation, σ = 6.1
X = 30 minutes

The probability we are looking for is shown in the first diagram; it's the area on the right of X=30

We need to standardized the value X=30 using the formula \frac{X-mean}{standard deviation}
\frac{30-25}{6.1}=0.82 rounded to two dp

The z-table is shown on the second diagram only gives the probability when P(Z<z), so to work out the probability when P(Z>z), we do 1-P(Z<z)

P(Z>0.82) = 1 - P(Z<z) = 1 - 0.7939 = 0.2061

6 0
3 years ago
Explain how to write 50,000 using exponents
Zinaida [17]
5 x 10 = 5x10¹ = 50
5 x 100 = 5x10² = 500
5 x 1000 = 5x10³ = 5000

5 x 10,000 = 5x10⁴ = 50,000

4 0
3 years ago
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