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Pani-rosa [81]
4 years ago
11

A bag has five red marbles, six blue marbles, and four black marbles. What is the probability of picking a blue marble, replacin

g it, and then picking a black marble?
Mathematics
1 answer:
WITCHER [35]3 years ago
5 0
The answer is 8/75 (: 
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Find the sale price to the nearest cent<br> $53 pair of jeans with a 20% discount
Artist 52 [7]

Answer: It is $42.4

Step-by-step explanation: Multiply (0.20)(53), you get 10.6, now that's the price that is discounted, so subtract that from the total, to get $42.4. If you want to check your answer, do 42.4/53 and you would get 0.80, or 80%. That is what you should get since you have a 20% discount from 100% of a product.

8 0
3 years ago
I have tried this like 10 diffrent ways<br> -3(r+9)=-32
KonstantinChe [14]
Distribute -3 to parenthasees
-3(r+9)=-3r-27

now we have
-3r-27=-32
add 27 to both sides
-3r+27-27=27-32
-3r+0=-5
-3r=-5
divide both sides by -3
r=-5/-3
r=5/3
5 0
3 years ago
Read 2 more answers
75
Vinvika [58]

Answer:

B. 210°

hope it helps

have a nice day

8 0
3 years ago
If x+1 and x-1 are the factors of the polynomial ax^3 + x^2 - 2x +b,find the values of a and b
Nadusha1986 [10]

The polynomial remainder theorem says that dividing a polynomial p(x) by x-c leaves a remainder of p(c)=0 if x-c is a factor of p(x). In this case, check c=-1 and c=1.

a(-1)^3+(-1)^2-2(-1)+b=-a+b+3=0

a(1)^3+(1)^2-2(1)+b=a+b-1=0

From the first equation,

-a+b+3=0\implies a=b+3

and substituting into the second gives

(b+3)+b-1=0\implies2b+2=0\implies b=-1\implies a=2

3 0
3 years ago
What is the square root of 2x equals 8
Fiesta28 [93]
2x = 8 ... therefore x = 4
4^2 = 16
8 0
3 years ago
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