Answer:
355.94 cm squared
Step-by-step explanation:
Area of rectangle = 4 cm * 6 cm = 24 square cm
Radius (r) of circle = 11 cm
[tex]Area \: of \: circle = \pi {r}^{2} \\ \\ = 3.14 \times (11)^{2} \\ \\ = 3.14 \times 121 \\ \\ = 379.94 \: {cm}^{2} \\ \\ area \: of \: shaded \: region \\ \\ = 379.94 - 24 \\ \\ = 355.94 \: {cm}^{2} \\ [/tex]
Answer: 355.94 cm squared
Step-by-step explanation:
= 3.14 x (11)²
= 3.14 x 121
= 379.94 - 24
= 355.94 centimeters squared
is y=7x-3 proportional
2 1/3 ÷y=1 2/5 ÷(−1.1)
Answer:
1.2x - 10.8 - 2.3x - 9.2 = -1.1x - 20; Rewrite as follows. (x 2y)(xy 2) = (x 2 x)(y y 2) ... x + 2.3; - x / 5 = 2; (x - 4) / (- 6) = 3; (-3x + 1) / (x - 2) = -3; x / 5 + (x - 1) / 3 = 1/5 ... 2 x 2 - 8 = 0; x 2 = -5; 2x 2 + 5x - 7 = 0; (x - 2)(x + 3) = 0; (x + 7)(x - 1) = 9; x(x - 6) = -9 ... For what value of the constant k does the quadratic equation x 2 +2x = - 2k .
Step-by-step explanation:
How many legs do 8 ants have??
Answer:
8 ants have 48 legs.
Step-by-step explanation:
An ant has 6 legs so all we would have to do is 6*8 = 48.
Which compound inequality has no solution? x ≤ –2 and 2x ≥ 6 x ≤ –1 and 5x ≤ 5 x ≤ –1 and 3x ≥ –3 x ≤ –2 and 4x ≤ –8 ANSWER ASAP!!!
0.7 is 10 times as great as?
Answer: 0.7 is 10 times larger than 0.07
Step-by-step explanation:
ABC ~ AYZ , what's the value of x?
Answer:
Step-by-step explanation:
6cm
Pls help I forgot how this works
Suppose you are an expert on the fashion industry and wish to gather information to compare the amount earned per month by models featuring Liz Claiborne attire with those of Calvin Klein. The following is the amount ($000) earned per month by a sample of 15 Claiborne models:_______.
$3.5 $5.1 $5.2 $3.6 $5.0 $3.4 $5.3 $6.5 $4.8 $6.3 5.8 4.5 6.3 4.9 4.2
The following is the amount ($000) earned by a sample of 12 Klein models.
$4.1 $2.5 $1.2 $3.5 $5.1 $2.3 $6.1 $1.2 $1.5 $1.3 1.8 2.1
1. Find the degrees of freedom for unequal variance test.
2. State the decision rule for 0.01 significance level:
H0:μLC≤μCK; H1:μLC>μCK.
3. Compute the value of the test statistic.
Answer:
(1) The degrees of freedom for unequal variance test is (14, 11).
(2) The decision rule for the 0.01 significance level is;
If the value of our test statistics is less than the critical values of F at 0.01 level of significance, then we have insufficient evidence to reject our null hypothesis. If the value of our test statistics is more than the critical values of F at 0.01 level of significance, then we have sufficient evidence to reject our null hypothesis.(3) The value of the test statistic is 0.3796.
Step-by-step explanation:
We are given that you are an expert on the fashion industry and wish to gather information to compare the amount earned per month by models featuring Liz Claiborne's attire with those of Calvin Klein.
The following is the amount ($000) earned per month by a sample of 15 Claiborne models;
$3.5, $5.1, $5.2, $3.6, $5.0, $3.4, $5.3, $6.5, $4.8, $6.3, $5.8, $4.5, $6.3, $4.9, $4.2 .
The following is the amount ($000) earned by a sample of 12 Klein models;
$4.1, $2.5, $1.2, $3.5, $5.1, $2.3, $6.1, $1.2, $1.5, $1.3, $1.8, $2.1.
(1) As we know that for the unequal variance test, we use F-test. The degrees of freedom for the F-test is given by;
[tex]\text{F}_(_n__1-1, n_2-1_)[/tex]
Here, [tex]n_1[/tex] = sample of 15 Claiborne models
[tex]n_2[/tex] = sample of 12 Klein models
So, the degrees of freedom = ([tex]n_1-1, n_2-1[/tex]) = (15 - 1, 12 - 1) = (14, 11)
(2) The decision rule for 0.01 significance level is given by;
If the value of our test statistics is less than the critical values of F at 0.01 level of significance, then we have insufficient evidence to reject our null hypothesis. If the value of our test statistics is more than the critical values of F at 0.01 level of significance, then we have sufficient evidence to reject our null hypothesis.(3) The test statistics that will be used here is F-test which is given by;
T.S. = [tex]\frac{s_1^{2} }{s_2^{2} } \times \frac{\sigma_2^{2} }{\sigma_1^{2} }[/tex] ~ [tex]\text{F}_(_n__1-1, n_2-1_)[/tex]
where, [tex]s_1^{2}[/tex] = sample variance of the Claiborne models data = [tex]\frac{\sum (X_i-\bar X)^{2} }{n_1-1}[/tex] = 1.007
[tex]s_2^{2}[/tex] = sample variance of the Klein models data = [tex]\frac{\sum (X_i-\bar X)^{2} }{n_2-1}[/tex] = 2.653
So, the test statistics = [tex]\frac{1.007}{2.653 } \times 1[/tex] ~ [tex]\text{F}_(_1_4,_1_1_)[/tex]
= 0.3796
Hence, the value of the test statistic is 0.3796.
— 7x — бу = — 15 Determine the intercepts of the line.
Answer:
see below
Step-by-step explanation:
— 7x — бу = — 15
To find the x intercept set y = 0 and solve for x
-7x - 0 = -15
-7x= -15
Divide by -7
-7x/-7 = -15/-7
x = 15/7
The x intercept is (15/7,0)
To find the y intercept set x = 0 and solve for y
o— бу = — 15
— бу= -15
Divide by -6
— бу/-6= -15/-6
у= 5/2
The y intercept is (0,5/2)
50 - (7 + (14² : 7))
Answer:
43 − ( 196 : 7 )
Step-by-step explanation:
Answer:
39
Step-by-step explanation:
14 x 2 = 28
28 / 7 = 4
7 + 4 = 11
50 - 11 = 39
С
3х +6
2х + 4
D
B
E
О 24
32
Оооо
34
Answer:
34
Step-by-step explanation:
Since AD is a straight line the sum of ABC and DBC would be equal to 180°
2x + 4 + 3x + 6 = 180 add like terms
5x + 10 = 180 subtract 10 from both sides
5x = 170 divide both sides by 5
x = 34
Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76 cm^2. Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not round your answer to two significant figures, your answer will fall outside of the grading tolerance and be graded as incorrect.) Write your answer to two significant figures and include the appropriate units
Answer:
The area of the rectangle is 12 cm² (to two significant figures)
Step-by-step explanation:
To determine the area of a rectangle that is 2.1-cm wide by 5.6-cm long,
The area of a rectangle is given by
Area = l × w
where l is the length
and w is the width
From the question,
l = 5.6 cm
and w = 2.1 cm
Hence, Area of the given rectangle will be
Area = 5.6 cm × 2.1 cm
Area = 11.76 cm²
Now, we will convert the answer to two significant figures
Then,
Area = 12 cm²
Hence, the area of the rectangle is 12 cm² (to two significant figures)
11, 13, 17, 25, 32, 37,
A) 58. B) 67
C) 47
D) 65
E) 59
Answer:
C 47
omae wa mou
please answer I'll give 5 stars
Answer: The answer is 31 Miles
Your welcome!
6. Jesse has 25 coins in his pocket, some are quarters, and some are dimes. If he has a
total of $5.05 in his pocket, how many of each type of coin are there?
Answer:
17 Quarters, 8 Dimes.
Step-by-step explanation:
17 x .25 = 4.25
8 x .10 = .80
4.25 + .80 = 5.05
help asap due in 10 mins
Answer:
x=[tex]\frac{5}{2}[/tex]
Step-by-step explanation:
cross multiply
8x=20
divide both sides by 8
x=[tex]\frac{5}{2}[/tex]
Answer:
Step-by-step explanation:
Multiply both sides by 20
x = 20 * 1/8
x = 2 4/8
x = 2.5
What is 2+2?
a.) 5
b.) 9
c.) k
d.) 4
Answer:
D.) 4
Step-by-step explanation:
Deena drove 585 miles in 9 hours . Kristen drove 605 miles in 11 hours who drove faster?
Answer:
deena
Step-by-step explanation:
585/9=65mph
605/11=55mph
brainliest plz
Answer:
Deena
Step-by-step explanation:
Deena drove 585 miles in 9 hours divide 585 by 9=65
Kristen drove 605 miles in 11 hours divide 605 by 11=55
Question 1
Move the slider to rotate △ABC. at which angles does △A’ B’ C’ coincide with △ABC △DEF △GHI △JKL
Answer:
Step-by-step explanation:
△JKL
1.
Sub: Maths
Classify the following angles as acute, Right, obtuse, straight and reflex angles.
30°,40°,120°,90°,180°,650,225°,1650,300°,170°,2150,315°,75°,
340º,170°
Answer:
any angle under 90 degrees is acute. A right angle is 90 degrees always, and obtuse angles are always above 90 degrees. Straight angles are always 180 degrees. A reflex angle is more than 180 degrees but less than 360 degrees. Hope this helps.
Find the volume. *
10 in
11 in
Graph the function on your own paper. Answer the qustions in the box below.
What is the y-intercept?
Explain how the graph is related to the monomials from which it is built.
Answer:
Step-by-step explanation:
your answer is 0
35,621 rounded to the hundreds place
Answer:35,621.00
Step-by-step explanation:
Answer:
35,600
Step-by-step explanation:
Your ound to the nearest hundred place
1/7+2/3= plz help ive been stuck on the question
Answer:
1/7+2/3
3+14/21
17/21
Answer:
17/21
Step-by-step explanation:
1/7 + 2/3
1/7 = 3/21
2/3 = 14/21
then:
1/7 + 2/3 = 3/21 + 14/21
= (3+14)/21
= 17/21
What is the solution to -4 (2x +6)=-24
Answer:
x=0
Step-by-step explanation:
Distribute -4
-8x - 24 = -24
Add 24 to both sides
-8x = 0
x=0
Answer:
x=0
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−4(2x+6)=−24
(−4)(2x)+(−4)(6)=−24(Distribute)
−8x+−24=−24
−8x−24=−24
Step 2: Add 24 to both sides.
−8x−24+24=−24+24
−8x=0
Step 3: Divide both sides by -8.
−8x
−8
=
0
−8
x=0
Answer:
x=0
You earn $12.50 an hour at your job. How many hours do you need to work to
make more than $425?
Is there statistically significant evidence that the districts with smaller classes have higher average test scores? The t-statistic for testing the null hypothesis is nothing. (Round your response to two decimal places.) The p-value for the test is nothing. (Round your response to six decimal places.) Hint: Use the Excel function Norm.S.Dist to help answer this question. Is there statistically significant evidence that the districts with smaller classes have higher average test scores? The ▼ small p-value large p-value suggests that the null hypothesis ▼ cannot be rejected can be rejected with a high degree of confidence. Hence, ▼ there is there is no statistically significant evidence that the districts with smaller classes have higher average test scores.
Complete Question
The complete question is shown on the first uploaded image
Answer:
The 95% confidence interval is [tex] [670.03 , 673.97 ] [/tex]
The test statistics is [tex]t = 7.7 [/tex]
The p-value is [tex]p-value = 0[/tex]
The p-value suggests that the null hypothesis is rejected with a high degree of confidence. Hence there is statistically significant evidence that the districts with smaller classes have higher average test score
Step-by-step explanation:
From the question we are told that
The sample size is n = 408
The sample mean is [tex]\= y = 672.0[/tex]
The standard deviation is [tex]s = 20.3[/tex]
Given that the confidence level is 95% then the level of significance is
[tex]\alpha = (100 -95 )\% = 0.05[/tex]
From the normal distribution table the critical value of [tex]\frac{\alpha }{2} = \frac{0.05 }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } = 1.96[/tex]
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{s}{\sqrt{n} }[/tex]
=> [tex]E = 1.96 * \frac{20.3}{\sqrt{408} }[/tex]
=> [tex]E = 1.970[/tex]
Generally the 95% confidence interval is mathematically represented as
[tex]\= y -E < \mu < \= y + E[/tex]
=> [tex] 672.0 -1.970 < \mu < 672.0 +1.970[/tex]
=> [tex] 670.03 < \mu < 673.97[/tex]
=> [tex] [670.03 , 673.97 ] [/tex]
From the question we are told that
Class size small large
[tex]Avg.score(\= y)[/tex] [tex]\= y_1 = 683.7[/tex] [tex]\= y_2 = 676.0[/tex]
[tex]S_y[/tex] [tex]S_{y_1} =20.2[/tex] [tex]S_{y_2} = 18.6[/tex]
sample size [tex]n_1 = 229[/tex] [tex]n_2 = 184[/tex]
The null hypothesis is [tex]H_o : \mu_1 - \mu_2 = 0[/tex]
The alternative hypothesis is [tex]H_a : \mu_1 - \mu_2 > 0[/tex]
Generally the standard error for the difference in mean is mathematically represented as
[tex]SE = \sqrt{\frac{S_{y_1}^2 }{n_1} +\frac{S_{y_2}^2 }{n_2} }[/tex]
=> [tex]SE = \sqrt{20.2^2 }{229} +\frac{18.6^2 }{184_2} }[/tex]
=> [tex]SE = 1.913[/tex]
Generally the test statistics is mathematically represented as
[tex]t = \frac{\= y _1 - \= y_2 }{SE}[/tex]
=> [tex]t = \frac{683.7 - 676.0 }{1.913}[/tex]
=> [tex]t = 7.7 [/tex]
Generally the p-value is mathematically represented as
[tex]p-value = P(t > 7.7 )[/tex]
From the z-table
[tex]P(t > 7.7 ) = 0[/tex]
So
[tex]p-value = 0[/tex]
From the values we obtained and calculated we can see that [tex]p-value < \alpha[/tex]
This mean that
The p-value suggests that the null hypothesis is rejected with a high degree of confidence. Hence there is statistically significant evidence that the districts with smaller classes have higher average test score
Which pair of these numbers has 20 as a common factor?
2 and 3
2 and 6
20 and 40
Answer:
20 and 40
Step-by-step explanation:
3x7 is 21 but thats only one too much it has to be 3 too much to go down one and be a factor
6x4 is 24 it has to be 6 too much to go down one to be a factor
20x1 and 40x1/2 are both factors unless your teacher doesn't include fractions, so just choose this for now and if you get it wrong ask your teacher because three and six arent
negative -4.6 times 5 equals
Answer:
-23
Step-by-step explanation:
Which of the following decimals is equivalent to
(
8
×
3
)
(
1
10
×
1
10
)
?
A.
0.024
B.
0.24
C.
2.4
D.
24.0
The decimal that is equivalent to (8 × 3)(1/10 × 1/10) is 0.24
How to determine which of the following decimals is equivalent?The expression is given as
(8×3)(110×110)
Rewrite the expression properly as follows
So, we have
(8 × 3)(1/10 × 1/10)
Evaluate the product of 8 and 3
So, we have
(8 × 3)(1/10 × 1/10) = (24)(1/10 × 1/10)
Evaluate the product of 1/10 and 1/10
So, we have
(8 × 3)(1/10 × 1/10) = (24)(1/100)
Express 1/100 as a decimal
So, we have
(8 × 3)(1/10 × 1/10) = (24)(0.01)
Remove the brackets
So, we have
(8 × 3)(1/10 × 1/10) = 24 x 0.01
This implies that
Evaluate the product of 24 and 0.01
So, we have
(8 × 3)(1/10 × 1/10) = 0.24
Hence, the decimal that is equivalent to (8 × 3)(1/10 × 1/10) is 0.24
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