What is the product of 3a2b and -2ab3?(1) a 2b3 (3) -6a2b3
(2) a3b4 (4) -6a3b4

Answers

Answer 1

Answer:

$3a^2b*(-2ab^3)=-6a^2*a*b*b^3=-6a^3b^4$

Answer 4

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Simplify expression:
3^{−(4a+1)} −3^{−(4a−1)} + 3^{−4a}

Answers

$3^(-(4a+1))-3^(-(4a-1)) + 3^(-4a) =3^(-4a-1 )-3^(- 4a+1 ) + 3^(-4a)=\n \n=3^( -4a )*3^(-1)-3^( - 4a )*3^1 + 3^(-4a) =3^(-4a)(3^(-1)-3+1)=3^( -4a )*((1)/(3)-2)=\n \n=3^( -4a )*(-1(2)/(3))=3^( -4a )*(-(5)/(3))=3^( -4a )*(-5)*(1)/(3) =-5 *3^( -4a )*3^(-1)=\n \n =-5 *3^( -4a +(-1))=-5 *3^( -4a -1)$

7y-2y+4+3y=-20
please show your work

Answers

7y-2y+4+3y=-20

First, you want to combine your 'y' Values.

7y-2y+3y
So subtract 7-2 then add 3. It equals 8
So your final 'y' value Is 8y.

So your new problem is...8y+4=-20

Now you get the 'y' alone and the first step to that is to subtract the 4 on BOTH sides.

8y+4=-20
-4 -4

Now your problem is 8y=-24

Step two to getting the 'y' alone is to divide by 8. So...

8y=-24
/8 /8

y=-3

So there you go. Hope I helped.

P(A)=0.4 and P(B)=0.6. What is the probability of observing event B three times in a row? Question 10 options:

0.240

0.360

0.064

0.216

Answers

Answer:

0.216

Step-by-step explanation:

Probability is the ratio of the number of possible outcome to the number of total outcome.

The probability that an event will happen added to the probability that the event will not happen gives 1. In other words, the outcome of a probability cannot exceed 1.

The probability that an event a will happen or that another independent event b will happen is the sum of the probability that a will happen to the probability that b will happen.

The probability that the event B will occur 3 times in a row may be interpreted as BBB and in probability, "and" is interpreted as multiplication while "or" is addition.

Pr(BBB)

= 0.6 * 0.6 * 0.6

= 0.216

PLEASE PLEASE HELP ME IM ALMOST DONE WITH IT DONT BE SHY IM DYING

Answers

0.79 is the probability answer. Please vote my answer brainliest! Thanks.

Answer:

Umm what did you say anyway. I did not understand.

How many solutions does the following system of equations have?y=5/2x+2
2y=5x+4

One

Two

Zero

Infinitely many

Answers

We will use a method of substitution.
y = 5/2 x + 2
2 y = 5 x + 4 ⇒ 2 ( 5/2 x + 2 )= 5 x + 4
5 x + 4 = 5 x + 4
0 x = 0 ⇒ x, y ∈ R
Answer: D)
This system has infinitely many solutions.

Suppose U=(-1,-2,-3,4,5,6,7,8) is the universal set and X=(-2,4,6,8) what is x?