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lukranit [14]
3 years ago
5

Alica wrote these numbers:2 9 15 21 which of alicas numbers is not a composite number

Mathematics
2 answers:
professor190 [17]3 years ago
6 0

Answer:

2 is not a composite number

natka813 [3]3 years ago
3 0

Answer:

2, because 2 can only be divided by 1 and itself, and thats what a prime number is

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A window washer uses the proportional relationship y = kx to determine how long (y) it will take him to wash any number of windo
Kobotan [32]
C.

By plugging in the numbers into the equation, 8 = 250(k), we can determine that 8 ÷ 250 = 0.032.
4 0
3 years ago
<img src="https://tex.z-dn.net/?f=9X%5E2-12X%2B4%3D0" id="TexFormula1" title="9X^2-12X+4=0" alt="9X^2-12X+4=0" align="absmiddle"
balu736 [363]
9x^2-12x+4=0 

(3x)^2-2\cdot 2\cdot3x+2^2=0

(3x-2)^2=0, but...(3x-2)^2 \geq 0 , ∨ x∈R

So, (3x-2)^2=0

3x-2=0 ⇒ 3x=2 ⇒ \boxed { x= \frac{2}{3}  }
8 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!!
horsena [70]
The correct answer is B
6 0
3 years ago
<img src="https://tex.z-dn.net/?f=y%20%3D%203x%20-%202%20%5C%5C%20y%20-%202%20%3D%20x" id="TexFormula1" title="y = 3x - 2 \\ y -
aleksley [76]

Answer:

The solution to the system of equations be:

x = 2, y = 4

Step-by-step explanation:

Given the system of equation

y - 2 = x

y = 3x - 2

substitute y = 3x - 2 in the equation y - 2 = x

y - 2 = x

(3x - 2) - 2 = x

3x -2 -2 = x

3x - 4 = x

add 4 from both sides

3x - 4 + 4 = x + 4

3x = x + 4

subtract x from both sides

3x - x = x + 4 - x

3x - x = 4

2x = 4

divide both sides by 2

2x/2 = 4/2

x = 2

For y = 3x - 2, plug in x = 2

y = 3x - 2

y = 3(2) - 2

y = 6 - 2

y = 4

Therefore, the solution to the system of equations be:

x = 2, y = 4

7 0
3 years ago
Based on pretrial speculation, the prob that a jury will return a guilty verdict in a certain high-profile murder case is though
IgorLugansk [536]

Answer:

34.5% probability that the jury returns a guilty verdict

Step-by-step explanation:

We have these following probabilities:

The defense attorneys have a 70% chance of convincing the jury that the police either contaminated or planted some of the key evidence.

In this case, there is a 15% probability that the jury will return a guilty verdict.

There is also a 100 - 70 = 30% of not convincing the jury that the police either contaminated or planted some of the key evidence.

In this case, 80% probability of the jury returning a guilty verdict.

What is the probability that the jury returns a guilty verdict?

15% of 70% and 80% of 30%. So

p = 0.15*0.7 + 0.8*0.3 = 0.345

34.5% probability that the jury returns a guilty verdict

5 0
3 years ago
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