Determine the value of x

Answer:

It will take 8 men 5 days

Answer:

The answere is -8 i think

Step-by-step explanation:

Answer: The answer is c

Step-by-step explanation:

Answer:

(1/0) infinite slope if it is going wrong sorry

Answer:

The calculated value of t= -1.118860 does not lie in the critical region t= -1.714 or t= -2.5. Therefore we accept our null hypothesis that the mean score for Group 1 is significantly lower than the mean score for Group 2 for both significance level of 0.05 and 0.01

Step-by-step explanation:

Groups               Sample Size      Mean        Standard Deviation

1                              11                      65                   4.7

2                            16                      74                    2.5

Formulate null and alternate hypotheses as

H0 : u1 < u2 against Ha: u1 ≥ u 2

That is the mean of the group 1 is lower than the mean of the group 2

Degrees of freedom is calculated df = υ= n1+n2- 2= 11+16-2= 23

The significance level alpha is chosen to be ∝ = 0.05

The critical region t ≤ -t (0.05, 23) = -1.714

And if we choose alpha = 0.01 the critical region would be  

t ≤ -t (0.05, 23) = -2.5

Here the difference between the sample means is x`1- x`2= 65-74= -9

The pooled estimate for the common variance σ² is

Sp² = 1/n1+n2 -2 [ ∑ (x1i - x1`)² + ∑ (x2j - x`2)²]

= 1/11+16-2 [ (65)²+(74)²]

= 1/23[ 4225+5476]

= 1/23[9701]

=421.782

Sp =√ 421.782=20.5373

The test statistic is

t = (x`1- x` ) /. Sp √1/n1 + 1/n2

t= -9/ 20.5373√1/11+ 1/16

t= -9/8.0439

t= -1.118860

The calculated value of t= -1.118860 does not lie in the critical region t= -1.714 or t= -2.5. Therefore we accept our null hypothesis that the mean score for Group 1 is significantly lower than the mean score for Group 2 for both significance level of 0.05 and 0.01

Answer:

-9.6 feet - 12.3f

Step-by-step explanation:

Answer:

1/16 D

Step-by-step explanation:

Answer:

1/16

Step-by-step explanation:

Multiply top with top and bottom with bottom

1/8 * 3/6 = (1*3)/(8*6) = 3/48

3 goes into 48

16 times

The answer is 1/16

The correct answer is 1/16 even though 3/48 is also correct. The question directions you to simplify.

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

3x - 4 = 8

3x - 4 + 4 = 8 +4

3x = 12

x = 4

Answer:

5/8

Step-by-step explanation:

Answer:

$59.5

Step-by-step explanation:

170% means 170/100

To get 170% multiply 170/100 by 85.

14450/100 will be the fraction.

Simplified it is 144.5.

That is how much Elsie has to pay.

Subtract to find the profit.

144.5-85 is 59.5.

The value of the store's profit will be $35.

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

Elsie bought a video game for $85.00.

And, the store Charges 170% of what it paid for the game.

Now,

Since, Elsie bought a video game for $85.00.

And, the store Charges 170% of what it paid for the game.

So, We can formulate;

Let C be the cost of the game.

⇒ 170% of C = 85

⇒ 170/100 × C = 85

⇒ C = 85 × 100 / 170

⇒ C = $50

Thus, The store's profit = $85 - $50

                                    = $35

Learn more about the percent visit:

https://brainly.com/question/24877689

#SPJ2

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

9÷6=1.5 3÷1.5=2

I hope this helps, and have a nice day! :)

Answer:

20pi

Step-by-step explanation:

C =2pi(r)

Ca = 2 (pi) (25) = 50 pi

Cb = 2 (pi) (35) = 70 pi

70pi - 50pi = 20pi

Answer:

211 ways

Step-by-step explanation:

Given :

Number of questions = 20

Number of correct correct questions to be answered in other to qualify should be atleast 18

Hence,

Correct questions could be either 18, 19 or 20 ;

Using combination :

nCr = n! ÷ (n-r)!r!

20C18 = 20! / (20 - 18)!18!

20C18 = (20* 19) / (2 * 1) = 190 ways

20C19 = 20! / (20-19)!19!

20C19 = 20 / 1 = 20 ways

20C20 = 20! / 0! 20! = 1 ways

Hence, total number of possible ways = (190 + 20 + 1) = 211 ways

Answer: Choice A)  Angle-Angle-Side

This abbreviates to AAS.

==========================================================

Explanation:

AC bisects angle DAB, which tells us that angle DAC and angle CAB are the same measure (in this case, each is 106/2 = 53 degrees).

Because angle DAC = angle CAB, this forms the second "A" of "AAS". The first "A" is due to angle ABC = angle ADC.

The "S" refers to AC = AC by the reflexive property.

"Angle-Angle-Side" shortens to "AAS". Be sure not to mix it up with ASA which is a similar theorem. In the case of AAS, the side is not between the angles mentioned. If we knew that AB = AD, then we could use ASA.

Answer:

[tex]\mathrm{Best\:course\:grade\:possible:\:}87.25\%,\\\mathrm{Minimum\:score\:on\:final\:to\:earn\:at\:least\:a\:75\%\:for\:the\:course:\:}51\%[/tex]

Step-by-step explanation:

Assuming the maximum score for the final is [tex]100\%[/tex], we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of [tex]100\%[/tex], their overall grade for the course would be:

[tex]83(1-0.25)+100(0.25)=\fbox{$87.25\%$}[/tex].

To find the minimum score they need to earn a 75% for the course, we set up the following equation:

[tex]83(1-0.25)+x(0.25)=75[/tex], where [tex]x[/tex] is the minimum score she needs.

Solving, we get:

[tex]62.25+x(0.25)=75,\\x(0.25)=12.75,\\x=\fbox{$51\%$}[/tex].

Answer:

puedes decirme l indicación para poder resolverlo

Answer:

y=2x+ 4

Step-by-step explanation:

Same slopes and different y-intercept are parallel lines

Answer: B, D

Step-by-step explanation:

You Can just count the blocks

B: has 24 and D has 24 which both of them are between 30 and 20

Answer:

Step-by-step explanation:

D and b

Answer: 13

Step-by-step explanation: 13 because if u multiple u get 13 I hope this helped :)

On a coordinate plane, a line goes through points (0, 0), (5, 3), (10, 6) is

y = 3/5x

and, x y = 3/5

The property of having suitable proportions in terms of size, number, degree, harshness, etc.: If a defensive action against an unfair attack results in the destruction that contravenes the proportionality criterion, it may even go far beyond a justifiable defense.

A mathematical comparison of two numbers is called a proportion. According to proportion, two sets of provided numbers are said to be directly proportional to one another if they increase or decrease in the same ratio. "::" or "=" are symbols used to indicate proportions.

Here the given three points are (0, 0), (5, 3), (10, 6).

So, the equation of the line passing through the points (0, 0), (5, 3) is

y- 0/ (x-0)= (3-0)/(5-0)

y/ x = 3/5

y= 3/5x

Learn more about proportionalities here:

https://brainly.com/question/3254974

#SPJ7

Answer:

The given statement is false

Step-by-step explanation:

Given that:

mean = 30 hours

median = 26.2 hours

In the given sample, 24 of the families turned on the television for less than 15  hours for the week.

The 53rd percentile is less than 25 hours.

The Median represents the value that equally divides the whole data into two parts. This signifies that the median is the 50th percentile of the data.

Provided that the median is 26.2 hours. So, the 54th percentile should be greater than 26.2 hours.

Thus, the given statement is false.

Answer:

169pi in. squared

Step-by-step explanation: 13x13xpi

Answer:

have a good day too

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Let us rule out the first one. c+11 is not equivalent.

The second one does not work either because it is adding the two terms instead of multiplying.

The last one does not work either because again, it is adding.

C, the third one works. This is because using multiplaction, you can rearrange the order of the terms and still get the same answer.

Therefore, the third one

Hope this helps! :)

Answer:

I think it is C and D

Step-by-step explanation:

!!!!

Answer:b

Step-by-step explanation:that person above is so wrong

Answer:

https://brainly.com/question/20948244

Step-by-step explanation me     :

Answer: 8 2/3

13/2 ÷ 3/4

keep change flip

13/2 × 4/3

13×4= 52

2×3= 6

52/6= 8 2/3

I hope this helps:

Answer: It is a trick question 78 kids did or how many total Sixth Graders is there that would help is there 100 in total or what?

Step-by-step explanation:

The right angle is 90 degrees.

The 3 inside angles are a total of 180 degrees.

The two acute angles would need to equal 180-90 = 90 degrees.

Using the ratio you have 3x + 7x = 90

Simplify to get 10x = 90

Divide both sides by 10 to get x = 9

Now you have the two angles:

Angle 1 = 3 x 9 = 27

Angle 2 = 7 x 9 = 63

Answer:

510, 810.2, 98, 602.06, 650

Step-by-step explanation:

its in the order as you put hope I got them right sorry if I messed up :)

Answer:

1.) 510

2.) 810.2

3.) 98

4.) 555.556

5.) 650