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malfutka [58]
3 years ago
7

john has 16 red balls and 12 black balls. what is the ratio ( in simplest form) of red balls to black balls

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
7 0
4 to 3 because both 16 and 12 can be divided by 4 which is the lowest number they have in common and that brings us to 4 to 3
Nat2105 [25]3 years ago
3 0

Answer:4 to 3

Step-by-step explanation:

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There are exactly triangles when two sides measure 6 inches and the angles included by these two sides measure 90 degrees
Alla [95]

Answer:

Ok

Step-by-step explanation:

3 0
3 years ago
The height, in inches, of a randomly chosen American woman is a normal random variable with mean μ = 64 and variance 2 = 7.84. (
Schach [20]

Answer:

Step-by-step explanation:

Given that the height in  inches, of a randomly chosen American woman is a normal random variable with mean μ = 64 and variance 2 = 7.84.

X is N(64, 2.8)

Or Z = \frac{x-64}{2.8}

a)  the probability that the height of a randomly chosen woman is between 59.8 and 68.2 inches.

=P(59.8

b) P(X\geq 59)\\= P(X\geq -1.78)\\ \\=0.9625

c) For 4 women to be height 260 inches is equivalent to

4x will be normal with mean (64*4) and std dev (2.8*4)

4x is N(266, 11.2)

P(4x>260)= \\P(Z\geq -0.53571)\\=0.7054

d) Z is N(0,1)

E(Z19) = P(Z>19)\\= 0.000

since normal distribution is maximum only between 3 std deviations form the mean on either side.

3 0
3 years ago
What is the answer to 2× -2
Wittaler [7]

Answer:

-4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Factor 15z^2+17z-18 please show work
siniylev [52]

There is no common factor between 15, 17 and 18 because 17 is prime.  

15z² +17z - 18 =  

d = 17² - 4.15.-18  

d = 289 + 1080  

d = 1369  

z = (-17 +/- \/1369) : 2 * 15  

z = (-17 + 37) : 30  

z' = 20 : 30 = 2/3  

z" = (-17 - 37) : 30  

z" = -54 : 30 = -1.8  

<><

7 0
3 years ago
Find the greates common factor of the following monomials:2r^4s^2 and 36r^4s^3
ki77a [65]

The greatest common factor is 2r^{4} s^{2}


This is because we start by taking the largest factor that goes into both coefficients. Since the first coefficient is 2, we have to try 2 and 1. Since 2 is larger and goes into 36 evenly, we use that.


Then we use the smallest number of each variable. There are 4 r's in both equations. So, that is the number that we take. There are 2 s's in the first term, so we take that number.

6 0
3 years ago
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