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zheka24 [161]
4 years ago
12

The Square of the quantity 18 less than x

Mathematics
1 answer:
VashaNatasha [74]4 years ago
5 0

Answer:

x-18

Step-by-step explanation:

keywork: less that and also square

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Large Sample Proportion Problem. A survey was conducted in Ohio on high school marijuana use. Of the 2266 high school students s
Airida [17]

Answer: 0.0328

Step-by-step explanation:

Standard error is the standard deviation of the sampling distribution.

The formula to find the standard error is given by :-

SE=\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

,where n= sample size.

\hat{p}= Sample proportion.

Given : Of the 2266 high school students surveyed, 952 admitted to smoking marijuana at least once.

A study done 10 years earlier estimated that 45% of the students had tried marijuana.

i.e. Population proportion : p= 0.45

Sample size : n= 226

Sample proportion : \hat{p}=\dfrac{952}{2256}\approx0.42

Then , the standard error for this test will be :-

SE=\sqrt{\dfrac{0.42(1-0.42)}{226}}\\\\ SE=\sqrt{0.0010779}=0.0328310\approx0.0328

Hence, the  standard error for this test= 0.0328

5 0
4 years ago
At the craft store, Mateo bought a bag of green and orange marbles. He received 27 green marbles and 63 orange marbles. What per
evablogger [386]

Answer:

30%

Step-by-step explanation:

7 0
3 years ago
PLEASE SOLVE!! DUE RIGHT NOW!!! WILL MARK BRAINLIEST IF ANSWERED AND CORRECT!!!!!
Agata [3.3K]

Step-by-step explanation:

a) The measure of angle 7 is also 47 degrees. We know this because angle 5 and angle 7 are vertical angles and vertical angles are always equal.

b and c) Since we know that a straight line has an angle of 180 degrees and that the sum of angle 5 and angle 6 will add to this, we can use that to find the value of x like this:

47+2x-5=180\\47-5+2x=180\\42+2x=180\\42-42+2x=180-42\\2x=138\\\frac{2x}{2} =\frac{138}{2} \\x=69

5 0
3 years ago
Evaluate f(9) given the function f(x)=3x2 – 11x - 21*
Blizzard [7]

Answer:

123

Step-by-step explanation:

The given function is :

f(x)=3x^2 - 11x - 21

We need to find the value of f(9). It can be done by putting x = 9 in the above function as follows :

f(9)=3(9)^2 - 11(9) - 21\\\\=243-99-21\\\\=123

So, the value of f(9) is 123.

3 0
3 years ago
What is x?<br><br> 3x + 2 = 17
Vikentia [17]
X=5 i need more characters to answer this
5 0
3 years ago
Read 2 more answers
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