Answer:
Step-by-step explanation:
Lillian used 201.24 square centimeters of wrapping paper.
When the following fraction is reduced, what will be the exponent on the m?
27mn³
_____
51m⁸n
Answer:
a
Step-by -step explanation:
i took the test and got it right :)
What is the slope of this table ?
Answer:
Slope can be found using rise/run
so y2-y1/x2-x1
anybody know the answer to this??
Answer:
B. 2/3 because the probability of selecting a quarter is 1/3
Step-by-step explanation:
Find the total coins in the purse: 10 + 6 + 5 + 9 = 30. Now find out how many are not quarters: 10 are quarters, 30 - 10 = 20. The probability is 20/30, or 2/3,
Please help I think I picked the wrong answer !!
Answer:
one solution
Step-by-step explanation:
it has one solution because the slopes of the two equations(1x & 2x) are different, which means the lines of the two equations are not parallel, they have an intersection point(also means one solution).
Find the volume of this triangular prism shark tank.
Choices:
480,000ft3
300ft3
320,000ft3
960ft3
Find the missing length.
c=[?]
6
C
9
Pythagorean Theorem: a2 + b2 = c2
Enter
Answer:
yep
Step-by-step explanation:
mhm
Answer:
c = 10.81
Step-by-step explanation:
if it's a² + b² = c²
6² + 9² = c²
36 + 81 = c²
117 = c²
(square root both)
10.81 = c
(I think this is right)
Which statement correctly describes the effect of the parabola y=x^2+2x when it is changed to y=x^2+4x?
A: The parabola is translated to the right by two units.
B:The parabola is translated two units to the left and 4 units down.
C:The parabola is translated 1 unit to the left and 3 units down.
D: The parabola is vertically stretched by a factor of 2.
E: The parabola is vertically compressed by a factor of 2.
Answer:
D
Step-by-step explanation:
I said it was d.
15 years from now Ravi's age will be four his present age what is Ravi is present age
3. Penny's family decided to go to the Splash Park.
They purchased two adult tickets and two child
tickets. The adult tickets were 1į times the price
of the child tickets and the total cost for all four
tickets was $85. What was the cost of each type
of ticket?
Answer:
21.25
Step-by-step explanation:
because 85$ divided by the 4 tickets is 21.25
What is the surface area of the rectangular prism?
Helpppp I need this done
Answer: 348in^2
Step-by-step explanation:
8 x 9 = 72
72 x 2 = 144in^2 (front and back)
8 x 6 = 48
48 x 2 = 96in^2 (sides)
9 x 6 = 54
54 x 2 = 108in^2 (top and bottom)
Total Surface area = 144 + 96 + 108 = 348in^2 (second option on picture)
Answer:
Step-by-step explanation:
Please answer the question correctly with factual information for brainliest.
Answer:
3. 1/2
Step-by-step explanation:
[tex]\sqrt{36} = 6\\\sqrt{144} = 12\\Simplified = \frac{1}{2}[/tex]
Geraldo has 3 fewer marbles than Yan Together, they have 21 marbles which equation
represents this situation?
21, where is the number of marbles Yan has
*+ * - $) = 21, where is the number of marbles Geraldo has
*+ (8-2) = 21, where is the number of marbles Geraldo has
*+ * -3) = 21, where a is the number of marbles Yan has
4. Triangle Relationships- Interior and Exterior Angles
Find the measure of angle 1 and angle 2. Be sure to show all work related to each answer.
S
a. m21
42°
1/2
30°
M
b. M22
A
Answer:
Value of ∠1 = 102°
Value of ∠1 = 72°
Step-by-step explanation:
Given:
∠ S = 42°
∠ A = 30°
Find:
Value of ∠1
Value of ∠2
Computation:
Using angle sum property;
Sum of all interior angle of a triangle = 180°
∠ S + ∠ A + ∠ 1 = 180
42 + 30 + ∠ 1 = 180
72 + ∠ 1 = 180
∠ 1 = 180 - 72
∠ 1 = 102
Value of ∠1 = 102°
∠ 1 and ∠ 2 makes a straight line
So,
∠ 1 + ∠ 2 = 180
102 + ∠ 2 = 180
∠ 2 = 180 - 102
∠ 2 = 72
Value of ∠1 = 72°
A journal article reports that a sample of size was used as a basis for calculating a CI for the true average natural frequency (Hz) of delaminated beams of a certain type. The resulting interval was . You decide that a confidence level of is more appropriate than the level used. What are the limits of the interval
Answer:
The limit of the (228.533, 234.735)
Step-by-step explanation:
The values are missing in the given question. Therefore, in order to attempt this question, we will make assumptions.
So, let's assume that:
sample size of the journal article that was reported = 5
which is applied for determining a 95% CI
Also, assuming that the resulting interval = (229.764, 233.504)
However, if we are to use a 99% CI which we deemed to be more appropriate;
Then, our objective is to find the limits of this particular interval in question.
To do that:
We need to first find the sample mean at 95% CI by using the formula:
[tex]\Big ( \bar {x} - t_{\alpha/2, df} \ \dfrac{s}{\sqrt{n}}}, \bar x + t_{\alpha/2, df} \ \dfrac{s}{\sqrt{n}}} \Big) = (229.764,233.504)[/tex]
Since; df = n - 1
df = 5 - 1
df = 4
Then;
[tex]\Big ( \bar {x} - t_{\alpha/2, 4} \ \dfrac{s}{\sqrt{n}}}, \bar x + t_{\alpha/2, 4} \ \dfrac{s}{\sqrt{n}}} \Big) = (233.504+229.764)[/tex]
[tex]2 \bar {x} = (463.268)[/tex]
[tex]\bar {x} =\dfrac{463.268}{2 }[/tex]
[tex]\bar {x} =231.634[/tex]
Sample mean = 231.634
Using the same formula to determine the standard deviation, we have:
[tex]\Big ( \bar {x} - t_{\alpha/2, df} \ \dfrac{s}{\sqrt{n}}}, \bar x + t_{\alpha/2, df} \ \dfrac{s}{\sqrt{n}}} \Big) = (229.764,233.504)[/tex]
[tex]\Big ( \bar {x} - t_{\alpha/2, 4} \ \dfrac{s}{\sqrt{n}}}, \bar x + t_{\alpha/2, 4} \ \dfrac{s}{\sqrt{n}}} \Big) = (233.504-229.764)[/tex]
[tex]\Big ( (\bar x + t_{\alpha/2, 4} \ \dfrac{s}{\sqrt{n}}} )- (\bar {x} - t_{\alpha/2, 4} \ \dfrac{s}{\sqrt{n}}}) \Big) = (233.504-229.764)[/tex]
[tex]\Big ( (\bar x + t_{0.05/2, 4} \ \dfrac{s}{\sqrt{4}}} )- (\bar {x} - t_{0.05/2, 4} \ \dfrac{s}{\sqrt{5}}}) \Big) = (233.504-229.764)[/tex]
At t = 0.025 and df = 4; = 2.776
[tex]2\times 2.776 \dfrac{s}{\sqrt{5}}= 3.74[/tex]
[tex]5.552 \dfrac{s}{\sqrt{5}}= 3.74[/tex]
[tex]\dfrac{s}{\sqrt{5}}= \dfrac{ 3.74}{5.552}[/tex]
[tex]\dfrac{s}{\sqrt{5}}= 0.6736[/tex]
[tex]s = 0.6736 \times \sqrt{5}[/tex]
s = 1.5063
The 99% CI is:
[tex]\implies \Big(\bar x \pm t_{\alpha/2,4} \dfrac{s}{\sqrt{n}} \Big)[/tex]
At t =0.005 and df =4; = 4.604
[tex]\implies \Big(231.634 \pm 4.604 \dfrac{1.5063}{\sqrt{5}} \Big)[/tex]
[tex]\implies \Big(231.634 \pm 4.604 (0.67364) \Big)[/tex]
[tex]\implies \Big(231.634 \pm 3.1014 \Big)[/tex]
[tex]\implies \Big((231.634 - 3.1014), (231.634 + 3.1014) \Big)[/tex]
[tex]\implies \Big( 228.533, 234.735 \Big)[/tex]
In Texas, state law requires that for regular classroom settings in elementary grades K-4, the student-to-teacher ratio can be no more than 22:1. Schools may request a waiver to exceed this ratio. A hypothesis test is performed to determine if the proportion of schools needing such a waiver is above 25% using a random sample of 85 schools and a significance level of 5%. What conclusion should be drawn if 32 of the schools surveyed need a waiver to exceed the required student-to-teacher ratio
Answer:
Step-by-step explanation:
A hypothesis test is performed to determine if the proportion of schools needing such a waiver is above 25%
At the null hypothesis, we test that the proportion is of 25%, that is:
[tex]H_0: p = 0.25[/tex]
At the alternate hypothesis, we test that the proportion is above 25%, that is:
[tex]H_a: p > 0.25[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
0.25 is tested at the null hypothesis:
This means that [tex]\mu = 0.25, \sigma = \sqrt{0.25*0.75}[/tex]
Sample of 85 schools, 32 need a waiver:
This means that [tex]n = 85, p = \frac{32}{85} = 0.3765[/tex]
Value of the test statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{0.3765 - 0.25}{\frac{\sqrt{0.25*0.75}}{\sqrt{85}}}[/tex]
[tex]z = 2.69[/tex]
P-value of the test and decision:
The p-value of the test is the probability of finding a sample proportion above 0.3765, which is 1 subtracted by the p-value of z = 2.69.
Looking at the z-table, z = 2.69 has a p-value of 0.9964
1 - 0.9964 = 0.0036
The p-value of the test is 0.0036 < 0.05, thus we reject the null hypothesis that the proportion is 25%, and accept the alternate hypothesis that the proportion of schools needing such a waiver is above 25%.
HELP FAST (FINAL EXAM) One card is selected at random from a deck of cards. Determine the probability that the card selected is a 2.
Answer:
Decimal: 0.07692307692, fraction: 4/52, percent: 7%
Please answer the question question correctly with factual information for brainliest.
Answer:
A
Step-by-step explanation:
The rule is “Left, Right, Left, Down.” Which way does the 19th arrow point?
An atom of gold has a mass of approximately 3.25 x 10-22 grams. What is the mass of 1000 atoms of gold? Express your answer in scientific notation.
Answer:
The mass of 1000 atoms of gold is, in grams, of [tex]3.25 \times 10^{-19}[/tex]
Step-by-step explanation:
This question is solved by proportions, using a rule of three.
We have that:
One atom of gold has a mass, in grams, of [tex]3.25 \times 10^{-22}[/tex]. What is the mass of 1000 atoms of gold?
1000 atoms is [tex]10^3[/tex]. So
1 atom - [tex]3.25 \times 10^{-22}[/tex] grams
[tex]10^3[/tex] atoms - x
Applying cross multiplication:
[tex]x = 3.25 \times 10^{-22} \times 10^3 = 3.25 \times 10^{-22+3} = 3.25 \times 10^{-19}[/tex]
The mass of 1000 atoms of gold is, in grams, of [tex]3.25 \times 10^{-19}[/tex]
WILL GET BRAINLIEST TO WHOEVER GIVE THE CORRECT AND QUICK ANSWER, NO FAKE ANSWERS TO GET POINTS
The lengths of two sides of a triangle are 10 inches and 4 inches. Which of the following dimensions is the third side of this triangle?
A.
4 inches
B.
5 inches
C.
6 inches
D.
7 inches
Answer:
The answer would be A.) 4 inches
Step-by-step explanation:
It is A. because if the base of the triangle is 10 inches and one side is 4 then the two sides of the trianlge would be the same they are congruent so if one side of the triangle is 4 then the other side of the triangle is 4.
Hope this helps
The sum of ages of two brothers is 38.Four years ago the age of the elder brother was the square of the younger brother.Find their ages.
Answer:
Older: 29 Younger:9
Step-by-step explanation:
First from 38, you subtract 8, 4 years for each brother and you get 30 years together. Then you find out that 25+5=30, and 5^2=25. Then you add 4 to each age to find their present day ages. Pls award brainliest for this
A new, simple test has been developed to detect a particular type of cancer. The test must be evaluated before it is used. A medical researcher selects a random sample of 1,000 adults and finds (by other means) that 2% have this type of cancer. Each of the 1,000 adults is given the test, and it is found that the test indicates cancer in 98% of those who have it and in 1% of those who do not. Based on these results, what is the probability of a randomly chosen person not having cancer given that the test indicates cancer
Answer:
0.3333 = 33.33% probability of a randomly chosen person not having cancer given that the test indicates cancer
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Test indicates cancer.
Event B: Person does not have cancer.
Probability of a test indicating cancer.
98% of 2%(those who have).
1% of 100 - 2 = 98%(those who do not have). So
[tex]P(A) = 0.98*0.02 + 0.01*0.98 = 0.0294[/tex]
Probability of a test indicating cancer and person not having.
1% of 98%. So
[tex]P(A \cap B) = 0.01*0.98 = 0.0098[/tex]
What is the probability of a randomly chosen person not having cancer given that the test indicates cancer?
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0098}{0.0294} = 0.3333[/tex]
0.3333 = 33.33% probability of a randomly chosen person not having cancer given that the test indicates cancer
Plsss help me, ASAP, Thank you
Answer:
[tex]\frac{1}{16}[/tex] [tex]\frac{10}{9}[/tex]
Step-by-step explanation:
a reciprocal is a number that when multiplied by a given number gives 1 as product.
16 * x = 1
x = 1/16
9/10 * x = 1
x = 10/9
add
3×+8y-12zand5x-7y+15z
help meee
3x+5x+12z+15z+8y+7y
8x+17z+15y
Answer:
[tex]3x + 8y - 12 z + 5x - 7y + 15z \\ 8x + y + 3z[/tex]
Step-by-step explanation:
I hope this helps you
HELP ME OUT
Ali bought 2 pounds of ground turkey at $2.50 per pound and 3 pounds of ground beef at $3.20 per pound What was her total cost?
Enter your answer in the box.
$
Answer:
$14.60
Step-by-step explanation:
you do 2×2.50= 5
3×3.20= 9.6
A website offers mp3 downloads for a fee of $5 plus $0.15 for each song. Which choice gives an expression that shows the cost in dollars for purchasing "s" songs? 5 +0.15s 0 0.15 + 5s 0.45s 05.15 + 5 Next > Previous NA data to save last checked at 6:41 pm Submit Quiz
Answer:
i think 5 + 0.15
Step-by-step explanation:
Ashley owns a house with a market value of $135,000 and an assessed value of $110,000. If Cobb County's tax rate is $21.40 per $1,000 of assessed value, what is her annual tax bill?
Answer:
Annual tax bill of Ashley = $2,354
Step-by-step explanation:
Given:
Market value of house = $135,000
Assessed value of house = $110,000
County's tax rate = $21.40 per $1,000
Find:
Annual tax bill of Ashley
Computation:
Annual tax bill of Ashley = [Assessed value of house / 1,000 ]21.40
Annual tax bill of Ashley = [110,000 / 1,000 ]21.40
Annual tax bill of Ashley = [110]21.40
Annual tax bill of Ashley = $2,354
Bert measured a swimming pool and made a scale drawing. The scale of the drawing was
1 centimeter = 1 meter. What scale factor does the drawing use?
Simplify your answer and write it as a fraction.
Submit
Please help fast........
Answer:
b
Step-by-step explanation:
42 32 30 32 一 44 36 45 43 What is the median of this set of data?
Answer:
the first one=0
the second one=1
