Ken builds a porch in the shape of an isosceles trapezoid.
What is the area, in square feet, of Ken’s porch?
Answer:
In square feet, Ken's porch is 180² ft.
Answer: 120
Step-by-step explanation:
Base x height / 2 (I think)
I have 2 Apples that way at least 0.33 pounds, I gained 2 from my mom and dad and I gave 2 to my friends, how much do my remaining apples weight
Answer:
0.33
Step-by-step explanation:
Because you have 2 apples that weigh 0.33 pounds you gain 2 from your parents then give 2 to your friends so you have 2 left or....0.33 pound left.
Hope this helps☺️
​(a) The shape of the sampling distribution of the sample mean is approximately normal. Is this true or​ false?
Answer:
Shape of sampling distribution of sample mean being approx normal or not depends upon sample size.
Step-by-step explanation:
'The shape of the sampling distribution of the sample mean is approximately normal' might be true or false, depending on sample size.
If the sample size satisfies the condition of being sufficiently large, the shape of sampling distribution of sample mean becomes more bell shaped normally distributed (even more normally distributed than actual population).
Central Limit theorem also states this - Larger the sample size, shape of sampling distribution of sample mean becomes more normally distributed around population mean.
the residents of a city voted on whether to raise property taxes. the ratio of yes votes to no votes was 3 to 5 . if there were 1992 yes votes what wss the total
Write the equation of the line:
(-5,-3); slope = -3/5
Answer:
that is correct
Step-by-step explanation:
your welcome
Answer:
-3/5x+6
Step-by-step explanation:
I'm assuming they want it in slope-intercept form, because that's more common. If it's not then I will be wrong. See screenshot for proof.
What’s the intercepts
Answer:
X-
(7/6,0)
y-
(0,-7/3)
Step-by-step explanation:
To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.
x-intercept(s):
(7/6,0)
y-intercept(s):
(0,−7/3)
What 2 numbers that are the same make 2025?
Answer:
45
Step-by-step explanation:
Square root 2025 and you will get 45
45 times 45= 2025
Answer:
Step-by-step explanation:
If you are multiplying then 45 * 45 = 2025
If you are adding then 1012.5 + 1012.5 = 2025
A(n) ________ hypothesis is a statistical hypothesis that is tested for possible rejection under the assumption that it is true. g
Answer: A null hypothesis is a statistical hypothesis that is tested for possible rejection under the assumption that it is true.
Step-by-step explanation:
The null hypothesis[tex](H_0)[/tex] and alternative hypothesis[tex](H_a)[/tex] both are statements as per the researcher's claim that involves population parameter .
Null hypothesis has ≤,≥ ,= signs
Alternative hypotheses has < , > , ≠ signs.
A null hypothesis is a statistical hypothesis that is tested for possible rejection under the assumption that it is true.
The two parallelograms below are similar.
Answer:
C, 34 inches
Step-by-step explanation:
1. We can see that 30 is the length of one of the sides on the larger parallelogram. The same side has a length of 12 inches on the smaller one. So, we need the difference of these 2 to figure out PQ.
30 - 12 = 18 inches (the difference)
2. Add 18 to 16 (the bottom side on the small parallelogram) to figure out what the bottom side of the large parallelogram would be.
16 + 18 = 34 inches (answer C)
What is 10^6 ÷ 10^4.
Answer:
[tex]10^{2}[/tex]
Step-by-step explanation:
[tex]10^{6} /10^{4}[/tex]
=> [tex]10^{2}[/tex]
Proof,
10 * 10 * 10 * 10 * 10 * 10 / 10 * 10 * 10 * 10
4 ten's cancel each other, leaving behind 2 ten's, and,
10 * 10 is the same thing as [tex]10^{2}[/tex]
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
g 5 points It is known that a certain lacrosse goalie will successfully make a save 80% of the time. (Assume that all save attempts are independent.) Suppose that the lacrosse goalie attempts to make 12 saves. (Round answers to three decimal places.) (a) What is the probability that the lacrosse goalie will make at least 10 saves
Answer:
The probability that the lacrosse goalie will make at least 10 saves is 0.558.
Step-by-step explanation:
Let X denote the number of saves the lacrosse goalie will successfully make.
It is provided that the probability of the lacrosse goalie making a successfully save is, p = 0.80.
It is assumed that all save attempts are independent.
Suppose that the lacrosse goalie attempts to make n = 12 saves.
The random variable X follows a binomial distribution with parameters n = 12 and p = 0.80.
Compute the probability that the lacrosse goalie will make at least 10 saves as follows:
[tex]P(X\geq10 )=P(X=10)+P(X=11)+P(X=12)[/tex]
[tex]={12\choose 10}(0.80)^{10}(0.20)^{2}+{12\choose 11}(0.80)^{11}(0.20)^{1}+{12\choose 12}(0.80)^{12}(0.20)^{0}\\\\=0.2835+0.2062+0.0687\\\\=0.5584\\\\\approx 0.558[/tex]
Thus, the probability that the lacrosse goalie will make at least 10 saves is 0.558.
Please help I am taking a test! I will reward brainiest if you are correct (the picture is attached) for number 11!!
Answer:
I confirm that the person above me is right.
Step-by-step explanation:
Enjoy your brainliest ;)
Select the equation for the line parallel to y = -4x + 10 that
contains P(4,1).
Answer:
the third answer
Step-by-step explanation:
parallel lines will have the same slope (in this case -4) and you plug in the points
I triangle ABC is dilated by a scale factor of 3 with a center of (2.1). what is the location of A?
pls say if it is, i need to know fast
What is the quotient of 3/5 divided by 2/7
Answer:
21/10
Step-by-step explanation:
Answer:
It is 1/2
Step-by-step explanation:
Please mark me brainiest and like and rate 5 stars ;)
8 - 9(9n + 2) = 2(-5 + 11n)
Answer:
-103n = 0
Step-by-step explanation:
Watch my following steps:
8 - 81n - 18 = -10 + 22n
8 - 81n - 22n = -10 + 18
-81n - 22n = 8 - 8
-103n = 0
Pls consider marking my answer as Brainliest! It would mean a lot!
Scores on a common final exam are normally distributed with mean 71 and standard deviation 9. Department policy is that the top 10% of students receive an A. The minimum exam score to be awarded an A is about:
Answer:
The minimum exam score to be awarded an A is about 8.52.
Step-by-step explanation:
Let X represent the scores on a common final exam.
It is provided that X follows a normal distribution with mean, μ = 71 and standard deviation, σ = 9.
It is provided that according to the department policy is that the top 10% of students receive an A.
That is, P (X > x) = 0.10.
⇒ P (X < x) = 0.90
⇒ P (Z < z) = 0.90
The corresponding z-score is:
z = 1.28
Compute the value of x as follows:
[tex]z=\frac{x-\mu}{\sigma}\\\\1.28=\frac{x-71}{9}\\\\x=71+(1.28\times 9)\\\\x=82.52[/tex]
Thus, the minimum exam score to be awarded an A is about 8.52.
what is the solution to 5/6x - 1/3 > 1 1/3?
A. x > 25/18
B. x < 25/18
C. x > 2
D. x < 2
Step-by-step explanation:
we are looking for the inequality of X
i can tell from this question that the first 2 are wrong, which leaves the last 2
first step, we add 1/3
5/6x> 1 2/3
now we divide 1 2/3 by 5/6 which gives us 2
taking a look at the sign posted in the question, i can confirm that C is correct
PLEASE SAVE MY LIFE!
Answer:
13r/4
Step-by-step explanation:
aha i looked it up xD
The explanation is you have to put the whole number over its self.Then they have to have common denominator.Then add
If the probability (p-value) is smaller than 05 (alpha level) then we can conclude that the means are
different and our study is significant.
True
False
The right triangle on the right is a scaled copy of the right triangle on the left. Identify the scale factor. Express your answer as a whole number or fraction in simplest form.
Please help me 22 points and a THANK YOU WITH 5 STAR RATING:))))
Answer:
Scale factor = [tex] \frac{5}{4} = 1\frac{1}{4} [/tex]
Step-by-step explanation:
The scale factor is how much the right triangle on the right was increased in size or enlarged, since the right triangle is a scaled copy of the one on the left.
The scale factor used = the ratio of any of their corresponding sides
Scale factor = side length of the ∆ on the right ÷ corresponding side length of the ∆ on the left
Scale factor = [tex] \frac{15}{12} [/tex]
Scale factor = [tex] \frac{5}{4} = 1\frac{1}{4} [/tex]
The scale factor expressed as a fraction is 4/5
Since the right triangle on the right is a scaled copy of the right triangle on the left, then the ratio of their similar sides is equal to the scale factor.
This is expressed as:
Taking the ratio of the fractions
[tex]\frac{20}{25} = \frac{4}{5}[/tex]
Similarly for [tex]\frac{12}{15}[/tex]
[tex]\frac{12}{15} =\frac{4}{5}[/tex]
This shows that [tex]\frac{20}{25} = \frac{12}{15} = \frac{4}{5}[/tex]
Hence the scale factor expressed as a fraction is 4/5
Learn more here: https://brainly.com/question/9386516
An open box is to be made from a ft by ft rectangular piece of sheet metal by cutting out squares of equal size from the four corners and bending up the sides. Find the maximum volume that the box can have.
Answer:
432 cm[tex]^{3}[/tex]
Step-by-step explanation:
The volume of the box can be determine by using derivative function:
V = (18 - 2x) (18 - 2x) x
dV/dx = 4x^3 + 324 + 144x
equating to zero;
(x - 9) (x - 3) = 0
x = 9 , 3
putting the values in the equation;
V = (18 - 2 [3]) (18 - 2[3]) 3
volume = 432.
What is 6.804 rounded to the nearest hundreth
Answer:
6.8
Step-by-step explanation:
Evelyn wants to estimate the proportion of people who own a tablet computer. A random survey of individuals finds a 95% confidence interval to be (0.62,0.78). What is the correct interpretation of the 95% confidence interval
Answer:
The correct interpretation of the 95% confidence interval is that there is 95% confidence that the true proportion of people who own a tablet computer is within the upper limit (0.78) and the lower limit (0.62) of the confidence interval
Step-by-step explanation:
From the question we are told that
The 95% confidence interval is (0.62,0.78)
Generally the correct interpretation of the 95% confidence interval is that there is 95% confidence that the true proportion of people who own a tablet computer is within the upper limit (0.78) and the lower limit (0.62) of the confidence interval
1. The weights of 20 year old vegetarian women are normally distributed with a standard deviation σ = 15 pounds. How large of a sample would be need to estimate the mean weight μ of 20 year old vegetarian women with a margin of error of 5 pounds with 95% confidence?
Answer:
34.5744 ≈ 35
Step-by-step explanation:
The formula for Margin of Error
= z × σ/√n
Where
z = z score of the confidence interval = z score of 95% = 1.96
σ = 15 pounds
n = number of samples = ??
Margin of Error = 5
Hence,
5 = 1.96 × 15/√n
Cross Multiply
5 × √n = 1.96 × 15
Divide both sides 5
√n = 1.96 × 15/5
√n = 1.96 × 3
√ n = 5.88
Square both sides
n = 5.88²
n= 34.5744
Approximately the size = 35
factor this expression completey -3x - 12
Answer:
-3(x+4)
Step-by-step explanation:
you just factor out -3
Answer: -3(x+4)
Step-by-step explanation:
Hii, do you need to factor -3x-12? No problem!
Note that -3x and -12 have a -3 in common, so we can factor it out by dividing both -3x and -12 by -3.
x+4 (A negative number divided by a negative number gives us a positive result)
Next, we put parentheses around x+4
(x+4)
Now we put -3 outside these parentheses
-3(x+4)
Voila! There's our solution, cheers!
--
Hope that this helped! Best wishes.
--
g a box has a square base of side x and height h find the dimensions x, h for which the volume is 14 and the surface area is as small as possible
Answer:
Step-by-step explanation:
Base area =[tex]x^2[/tex]
side area=[tex]h*x[/tex]
Volume=[tex]x^2*h[/tex]=14
Surface area =[tex]4hx+2x^2[/tex]
upon substituting [tex]h=14/x^2[/tex]
surface area = [tex]4*\frac{14}{x^2}*x+2x^2[/tex]
upon differentiating and solving we get f"([tex]\sqrt[3]{14\\}[/tex]) >0 proves that this point is of minima
hence, dimensions are
[tex]x=\sqrt[3]{14}[/tex] ,h=[tex]\sqrt[3]{14}[/tex]
I need help, I don’t get this math question. 2. Using exponents, what is the simplified form of 15x6/3x2
F. 5x4
G. 5x3
H. 5x
I. 5
Answer:
F. [tex] 5x^{4} [/tex]
Step-by-step explanation:
[tex] \dfrac{15x^6}{3x^2} = [/tex]
[tex] = \dfrac{3 \times 5}{3} \times \dfrac{x^6}{x^2} [/tex]
[tex] = 5 \times x^{6 - 2} [/tex]
[tex] = 5x^4 [/tex]
Based on this poll, find a 95% confidence interval to estimate the percentage of U.S. adults who feel that access to healthcare is the most urgent health problem facing this country. Interpret your interval in context.
Answer:
Confidence Interval Meaning, Implication, Formula
Step-by-step explanation:
95% confidence interval is the range around the stable estimate, which has 95% certainty (or probability) of containing true population parameter.
Formula : x' + z (s/ √n)
Where : x' = sample mean, confidence level value, s = standard deviation, sample size
By using sample size, sample mean, sample standard deviation of US people 'considering health care access most important' - & using above formula - range containing actual population proportion (with 95% sure probability) thinking the same.