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2 years ago

Write the phrase as an expression. the difference of 12 and a number x

Mathematics

2 answers:

Brums [2.3K]2 years ago

6 0

Answer:

12-x=y

Step-by-step explanation:

shutvik [7]2 years ago

6 0

Answer:

x-12

Step-by-step explanation:

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If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

3 0

3 years ago

identify the coordinates of four points on the line with each given slope and y-intercept. slope=-1 and that y-intercept=8

VladimirAG [237]

Answer:

[-1, 9], [-2, 10], [-3, 11], [1, 7]

Step-by-step explanation:

Starting from the y-intercept of [0, 8], I did rise\run by moving one block north over one block west for the first three coordinates, but retracing back to the y-intercept, I moved one block south over one block east for the last coordinate. It does not matter where you go, as long as you follow the pattern within this rate of change [slope].

I am joyous to assist you anytime.

5 0

2 years ago

I POSTED THIS 3 TIMES AND NOBODY HELPED ME STILL?? :((( PLS HELP

Ipatiy [6.2K]

Answer:

the first one

Step-by-step explanation:

angle L congruent to angle P

4 0

2 years ago

HELPPPPP MEEEEE :((((

lutik1710 [3]

Answer:

B) 75, 3

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIEST I REALLY WANT TO LEVEL UP

8 0

2 years ago

Read 2 more answers

Kaitlin buys 9/10 of a pound of orange slices. She eats 1/3 of them and divides the rest equally into 3 bags. How much is in eac

frozen [14]

I found how to solve this by pretending the /10 wasn't there and divided 9/3= 3. Next, I subtracted 9-3=6, and because she is splitting 6 into 3 bags she will have to divide 6/3= 2. So in each bag there will be 2/10 pound of orange slices.

6 0

3 years ago