Answer:
y=-.5x-7
Step-by-step explanation:
Find the equations and x use Pythagorean theorem
Help!!!!!!!!!!!!!!!!!!!!!
Answer:
10x + 20
Step-by-step explanation:
ok 1st you know whatever you do the sides you gotta do to the side across from it so 1st easy thing is add the 2x values from the sides then your 3x+10 multiply it by 2 thats your answer then add the value up
Does anyone know how to do these types of problems?
Answer:
me, what's the question so I can see how to figure out the answer
A pollster believes that 20% of the voters in a certain area favor a bond issue. If 81 voters are randomly sampled from the large number of voters in this area, approximate the probability that the sampled fraction of voters favoring the bond issue will not differ from the true fraction by more than 0.02. (Round your answer to four decimal places.)
Answer:
0.3472 = 34.72% probability that the sampled fraction of voters favoring the bond issue will not differ from the true fraction by more than 0.02.
Step-by-step explanation:
To solve this question, we use the normal probability distribution and the central limit theorem.
Normal probability distribution:
When the distribution is normal, we use the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
In this question:
Proportion [tex]p = 0.2[/tex], sample of [tex]n = 81[/tex]. So
[tex]\mu = p = 0.2[/tex]
[tex]s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.2*0.8}{81}} = 0.0444[/tex]
Approximate the probability that the sampled fraction of voters favoring the bond issue will not differ from the true fraction by more than 0.02.
Probability of the sampled proportion being between 0.2 - 0.02 = 0.18 and 0.2 + 0.02 = 0.22, which is the pvalue of Z when X = 0.22 subtracted by the pvalue of Z when X = 0.18. So
X = 0.22
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0.22 - 0.2}{0.044}[/tex]
[tex]Z = 0.45[/tex]
[tex]Z = 0.45[/tex] has a pvalue of 0.6736
X = 0.18
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0.18 - 0.2}{0.044}[/tex]
[tex]Z = -0.45[/tex]
[tex]Z = -0.45[/tex] has a pvalue of 0.3264
0.6736 - 0.3264 = 0.3472 = 34.72% probability that the sampled fraction of voters favoring the bond issue will not differ from the true fraction by more than 0.02.
What is the equation for the following graph?
Answer:
-2x + 4
Step-by-step explanation:
The y intercept is 4. When x increases by 1, y decreases by 2.
Answer:
Y
Step-by-step explanation:
The rise is -2/1 and that is simplified to -2 because the line is going down
1(x-2)= -5.5 solving for x. What's the answer
Answer:
x = -3.5
Step-by-step explanation:
1(x-2) = -5.5
x-2 = -5.5
+2 +2
x = -3.5
Need help asap
Do they represent a function or not a function
Answer:
Number 1 does not represent a function because it does not pass the Vertical Line Test.
Number 2 does not represent a function because it does not pass the Vertical Line Test.
Which equation shows the zero property of multiplication
A. 4×0=0
B. 9+9+9=3×9
C. 3×6=6×3
D. 5×1=1
Answer:
A. 4×0= 0
Step-by-step explanation:
since it shows that any number you multiply by 0 still gives you 0
Micheal can eat 21 cookies in 3 minutes. She wants to know how many minutes it would take her to eat 35 cookies if she can keep up the pace.
15 points <3
Answer:
It will take her 5 minutes
Step-by-step explanation:
solve each proportion.
2/4=4/p-3
pls help
Answer:
[tex]p=\frac{8}{7}[/tex]
Step-by-step explanation:
[tex]\frac{2}{4} = \frac{4}{p} - 3[/tex]
[tex]\frac{1}{2} = \frac{4}{p} - 3[/tex] (simplify)
[tex]\frac{1}{2}+3 = \frac{4}{p} - 3+3[/tex]
[tex]\frac{1}{2}+3 = \frac{4}{p}[/tex] (Add 3 to both sides)
[tex]\frac{7}{2}= \frac{4}{p}[/tex] (simplify)
[tex]\frac{7}{2}p= \frac{4}{p}*p[/tex]
[tex]\frac{7p}{2}=4[/tex] (Multiply both sides by p)
[tex]\frac{7p}{2}*2=4*2[/tex]
[tex]7p=8[/tex] (Multiply both sides by 2)
[tex]\frac{7p}{7}=\frac{8}{7}[/tex]
[tex]p=\frac{8}{7}[/tex] (Divide both sides by 7)
What is the midpoint of the segment shown below? (-1,5) (-6,-2)
Answer:
(-7/2, 3/2)
Step-by-step explanation:
picture below ;)
A line became by joining two coordinates, the midpoint of the given line segment is (-3.5,1.5).
What is a line segment?
A line segment is become by joining two points which has specific coordinates.
To find the midpoint coordinate between any two points then we have to add the x's coordinates and divide by two and similarly y's coordinates and divide by two.
For example, if you have two points as (a,b) and (c,d) then the coordinate of the midpoint joining this line will be ( [tex]\frac{a+c}{2}[/tex], [tex]\frac{b+d}{2}[/tex] ).
Since the points are (-1,5) (-6,-2) so the midpoint joining this line segment will be
( [tex]\frac{-6-1}{2}[/tex], [tex]\frac{5-2}{2}[/tex] ) so (-3.5,1.5) will be the midpoint of the line segment.
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Shana is forming kickball teams out of all of the students that signed up from two schools. Each team must have the same number of players and be from the same school. What is the largest number of players that Shana can put on each team?
The answer is 45 → 3 × 3 × 5 36 → 2 × 2 × 3 × 3 GCF = 3 × 3 Team Size = 9
i think you answered it already?? "45 → 3 × 3 × 5 36 → 2 × 2 × 3 × 3 GCF = 3 × 3 Team Size = 9"
The largest number of players that Shana can put on each team will be equal to 9.
What is an arithmetic operation?
The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers.
Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.
As per the given values in the question,
45 → 3 × 3 × 5
36 → 2 × 2 × 3 × 3
GCF(Greatest common factor) = 3 × 3
Team Size = 9
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Determine a rational number that is located between -2 1/4 and -2.8
justify that the point is located between these two numbers and then graph the point on a number line relative to -2 1/4 and -2.8
Answer:
7
Step-by-step explanation:
Help me answer this!!!
Answer/Step-by-step explanation:
Year = x
Weight (kg) = y
Rate of change between 2010 and 2011 = [tex] \frac{y_2 - y_1}{x_2 - x_1} [/tex]
Where,
[tex] (2010, 35) = (x_1, y_1) [/tex]
[tex] (2011, 30) = (x_2, y_2) [/tex]
Plug in the values
[tex] = \frac{30 - 35}{2011 - 2010} [/tex]
[tex] = \frac{-5}{1} = -5 [/tex]
Rate of change = -5kg per year
This means that there was a decrease in the weight of the winning dog form 2010 to 2011 by 5 kilograms
Order the values from least to greatest.
Answer:
D
Step-by-step explanation:
A diver is on a springboard that is 3 meters above the surface of the pool. Another diver is 2 meters below the surface of the pool. Who is closer to the surface of the pool?
Answer:
i think its b
Find the output, y, when the input, x, is 6.
Answer:
2
Step-by-step explanation:
Answer:it. Actually 0
Step-by-step explanation:
What is the solution to the equation 9(x − 1) = 27? (1 point) x = 2.5 x = 0.5 x = −0.5 x = −3.5
Step-by-step explanation:
Are you sure you wrote the answers correctly?
answer: x=2.5
because i solved it on canvas
Ten cards are numbered 10, 11, 12, ..., 19, one number per card. Brian removes three cards whose numbers are primes, and puts the remaining cards in a hat. If one card is then drawn at random from the hat, what is the probability that its number is a prime?
A) 1/10
B) 1/9
C) 1/5
D) 2/5
E) None of The Above
Answer:
None of the Above
Step-by-step explanation:
10 - Not Prime
11 - Prime
12 - Not Prime
13 - Prime
14 - Not Prime
15 - Not Prime
16 - Not Prime
17 - Prime
18 - Not Prime
19 - Prime
6 numbers NOT PRIME
4 numbers PRIME
4 - 3 = 1
1 + 6 = 7
1/7
I NEED GOOD GRADES PLEASE HELP
If y = 3, which of the following expressions will
produce a value of 15?
A.5y
B.25-10y
C.4y+3
D.8y divide by 2
Answer:
A.5y
Step-by-step explanation:
5y = 5 x y
y= 3
5 x 3 = 15
=A.5y
If you know the answer help ASAP
How many 1 1/2 -pound loaves of bread can be made from 9 pounds of dough?
Answer:
6
Step-by-step explanation:
You divide 9 by 1 1/2.
Can someone help plz im giving brain
Answer:
for 20 the answer is B
Step-by-step explanation:
A hospital wants to survey religious participants in their city about what they seek from a hospital Chaplin, so they randomly select 5 religious meeting in the city and survey
Answer:
c. Cluster random sample
Step-by-step explanation:
Missing word "every participant in those meetings. What type of sample is this? a. Simple random sample, b. Stratified random sample, c. Cluster random sample, d. None of the above"
In the cluster sampling, researchers will divide a certain population into smaller groups which is known as clusters, then, they randomly select among these clusters to form a sample. In cluster sample, the clusters to be included are selected at random and all members of the cluster are included.
Select all angles adjacent to 24. You must select all
correct answers.
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Answer:
E,F,C
Step-by-step explanation:
Select the interval where g(x) < 0
Answer:
4
Step-by-step explanation:
4 us the rifht answer just put 4
The value of the function in the interval (-4, -1) and (1, ∞) will be positive. Then the correct option is C.
What is a function?A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.
The first number mentioned is the least because it is the smallest, and the final number listed is the greatest because it is the biggest.
From the graph, the value of the function in the interval (-4, -1) will be positive. And the value of the function in the interval (1, ∞) will be positive. Then the correct option is C.
More about the function link is given below.
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The graph is attached below. And the missing options are given below.
a. x < - 4
b. x > 1
c. -4 < x < 1 and x > 1
d. - 4 > x
A small petting zoo has Llama’s and Kangaroo’s. There are 120 legs and 47 heads on this farm. How many Llama’s and how many Kangaroo’s does the farm have?
PLEASE HELP ASAP
Answer:
idc
Step-by-step explanation:
wah
wah
There will be 13 Liamas and 34 Kangaroos in the zoo.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that a small petting zoo has Llamas and Kangaroos. There are 120 legs and 47 heads on this farm.
The equations will be formed as,
4L + 2K = 120
L + K = 47
Solve the above equations by elimination method,
4L + 2K = 120
-4L -4k = -188
____________
0 - 2K = -68
K = 34
The number of the Lamas will be,
L + K = 47
L = 47 - K
L = 47 - 34
L = 13
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PLEASE HELP I HAVE 26 MINUTES TO COMPLETE THIS
Answer:
2y +12
Step-by-step explanation:
5y - 3y =2y and then plus 12
Answer:
C
Step-by-step explanation:
At a store, notebooks are on sale for 78% off the regular price. The cost of a notebook is represented by n. Which of the
following expressions does NOT represent the sale price of the notebooks?
O A n +0.22
OB. 0.22n
OC. n - 0.78n
OD. (1 -0.78)
Answer:
C
Step-by-step explanation:
If the cost is represented by n, why would you subtract the cost of the notebook by 0.78 while multiping it witht the cost?
Answer:
C
Step-by-step explanation:
