-4(2x - 9) is the same as which of the following?

Brums [2.3K]

Answer: 276

Step-by-step explanation:

multiply 1/3 by 4/4 to make it similar to 5/12 that way you can add them. because the denominator is different from each other you can’t add them. once you do that you get 4/12, you then add 5/12 and that equals 9/12. in order to get to 12/12 you need 3/12 more. this 3/12 represents the 69 guest that chose vegetarian. the 5/12 represents the the guest who chose chicken and the 4/12 represents the ones who chose beef. now that you know 69 people is the same as 3/12 of all the guest. you then realize that 9 is divisible by 3. so you multiply 69 by 3 because 3 goes into 9 3 times. which gives you 207. 207 represents 9/12. and we already know 69 represents 3/12. so you add them together and get 276. sorry if that was confusing but that’s the best way i can explain it.

3 0

3 years ago

In a factory, 2 identical solid metal right circular cones of base radius h cm are melted and recast into 8 area base smaller id

PIT_PIT [208]

C is the answeer hope i could help

6 0

4 years ago

R/5=9/21 solve for r

Hunter-Best [27]

R is r right?

at least for me.

4 0

4 years ago

Pat's soccer team has 15 players. 2/3

Leona [35]

Answer:

10

Step-by-step explanation:

6 0

3 years ago

Suppose that the age that children learn to walk is normally distributed with mean 12 months and standard deviation 1 month. 19

Gnesinka [82]

Answer with explanation:

Given : The age that children learn to walk is normally distributed with $\mu=12\text{ months}$ and $\sigma=1\text{ month}$ .

Let x be the age that children learn to walk .

B) Using formula $z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

n= 19

For x= 11.5

$z=\dfrac{11.5-12}{\dfrac{1}{\sqrt{19}}}=-2.18$

For x= 12.5

$z=\dfrac{12.5-12}{\dfrac{1}{\sqrt{19}}}=2.18$

Then, by using the z-value table , for the 19 people, the probability that the average age that they learned to walk is between 11.5 and 12.5 months old will be :-

$P(-2.18$