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3 years ago

15

For each set of angles name the angle pair and find the missing measurement Type of angle pair 2) These angles are to 1340 SO...

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1 answer:

AfilCa [17]3 years ago

3 0

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WHAT IS THE ANSWER??

Nookie1986 [14]

Steps to solve:

3/x+2 - √x-3 when x = 19

~Substitute

3/19+2 - √19-3

~Simplify

3/21 - √16

~Simplify

1/7 - 4

~Subtract

-3 6/7

Best of Luck!

5 0

4 years ago

Braxton joins a gym.The gym charges him a $20 joining fee and will charge him $2 each month

balu736 [363]

For how many months does he go to the gym?

8 0

3 years ago

Read 2 more answers

Sara is cutting circles out of pieces of cardboard. If she uses a rectangular piece of cardboard that is 8 in. 10 in., what is t

Vinvika [58]

Answer:

50.29 square inches.

Step-by-step explanation:

Given:

Sara is cutting circles out of pieces of cardboard.

She uses a rectangular piece of cardboard that is 8 inches by 10 inches.

Question asked:

What is the area of the largest circle she could make?

Solution:

Here given length of piece of cardboard is 10 inches and breadth is 8 inches, to draw the largest circle, we have to draw the circle touching the boundary of the breadth of the rectangular cardboard and hence breadth will be considered as diameter and it will be the maximum diameter of the circle.

Now, we will find the area of the largest circle by taking breadth as the maximum possible diameter:

Breadth = Diameter = 8 inches ( given )

Radius = half of diameter , $r =\frac{d}{2} =\frac{8}{2} = 4\ inches$

$Area \ of\ circle =\pi r^{2}$

$=\frac{22}{7} \times4\times4\\=\frac{352}{7} =50.285\ square\ inches$

Therefore, area of the largest circle she could make is 50.29 square inches.

4 0

4 years ago

After a large fund drive to help the Boston City Library, the following information was obtained from a random sample of contrib

Archy [21]

Answer:

α = 0.01 ; 2 - tailed

χ² = 16.998

Pvalue = 0.1497

Fail to reject H0

Step-by-step explanation:

Given the data above :

Number of People Making Contribution

Ethnic Group $1-50 $51-100 $101-150 $151-200 Over $200 Row Total

A 77 63 54 39 18 251

B 90 48 76 26 24 264

C 73 67 59 37 30 266

D 108 82 70 50 30 340

Column Total 348 260 259 152 102 1121

1.) The level of significance, α/2 = 0.01/2

2.)

The hypothesis :

H0 : Contribution and Ethnic group are independent

H1 : Contribution and Ethnic group are not independent

The Chisquare statistic :

χ² = (Observed - Expected)²/ Expected

The expected value for each cell is calculated thus :

(Row total * column total) / sum total

The expected values :

77.9197 58.2159 57.992 34.0339 22.8385

81.9554 61.231 60.9955 35.7966 24.0214

82.5763 61.6949 61.4576 36.0678 24.2034

105.549 78.8582 78.5549 46.1017 30.9367

Using the χ² formula above ;

χ² values for each cell are :

0.010855 0.393154 0.274794 0.724635 1.02509

0.789645 2.85902 3.69099 2.68108 0.0000191

1.11055 0.456179 0.098278 0.0240936 1.38826

0.056933 0.125176 0.93165 0.32963 0.028359

Taking the sum :

0.010855+0.393154+0.274794+0.724635+1.02509+0.789645+2.85902+3.69099+2.68108+0.0000191+1.11055+0.456179+0.098278+0.0240936+1.38826+0.056933+0.125176+0.93165+0.3293+0.028359

χ² = 16.998

To obtain the Pvalue :

df = (Row - 1)(column - 1) = (5-1)*(4-1) = 4 * 3 = 12

Pvalue(16.998 ; 12) = 0.1497

If Pvalue < α ; Reject H0 ;

Since Pvalue > α ; WE fail to reject H0

4 0

3 years ago

Log10(x^2+1)=1 <br> .......

sesenic [268]

$2^{x} = 4 ----\ \textgreater \ x = log_{2}4

 x^{2} = 4 ----\ \textgreater \ x = \sqrt{4}$

5 0

4 years ago