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MA_775_DIABLO [31]
3 years ago
6

100 POINTS PLUS BRAINLIEST QUESTION ATTACHED

Mathematics
2 answers:
labwork [276]3 years ago
7 0

Answer:

Step-by-step explanation:

Southville is due south of Portland and Westfield is due west of Portland.  So the three cities form a right-angled triangle on a map.

The distance between Southville and Westfield = sqrt( 57^2 + 76^2)

= 95 miles

jonny [76]3 years ago
3 0

A squared + B squared = C squared  

57 squared + 76 squared =  

(Distance between Southville and Westfield) squared  

square root of (3249 + 5776) = Distance between Southville and Westfield  

square root of 9025 = Distance between Southville and Westfield  

Distance between Southville and Westfield = 95 miles


Hope this helps! God bless :-)

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kolezko [41]
First, find the decreased price by multiplying 100 by 8% and subtracting:

100 x 0.08 = 8

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now multiply reduced price by 8% and add:

92 x 0.08 = 7.36

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Sine is also known as Opposite over hypotenuse. 
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Graph a right triangle with the two points forming the hypotenuse. Using the sides, find the distance between the two points in
pshichka [43]

Answer:

d=\sqrt{53}

Step-by-step explanation:

We need to find the distance between two points i.e. (−5,−1) and (−3,−8).

It can be calculated using distance formula as follows :

d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}

We have, x₁ = -5, x₂ = -3, y₁ = -1 and y₂ = -8

Put all the values,

d=\sqrt{(-8-(-1))^2+(-3-(-5))^2}\\\\d=\sqrt{49+4}\\\\d=\sqrt{53}

So, the distance between the points is equal to \sqrt{53}

5 0
3 years ago
The distance y in miles traveled by a striped marlin in x hours is shown in the graph. Each ocean creature’s distance in miles i
julsineya [31]

9514 1404 393

Answer:

  swordfish

Step-by-step explanation:

The graph shows the marlin travels 50 miles in 1 hour, and 150 miles in 3 hours. These numbers can be compared directly to those given for the tuna (43.5 miles in 1 hour) and the wahoo fish (144 miles in 3 hours).

The speeds of the swordfish and shark are the coefficients of x in their respective equations. The swordfish travels 60 mph, so is faster than the marlin. The shark travels 31 mph, so is slower.

7 0
2 years ago
The authors of a paper concluded that more boys than girls listen to music at high volumes. This conclusion was based on data fr
schepotkina [342]

Answer:

Since the calculated value of z= 2.82  does not lie in the critical region  the null hypothesis is accepted and it is concluded that the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls.

The value of p is 0 .00233. The result is significant at p < 0.10.

Step-by-step explanation:

1) Let the null and alternate hypothesis be

H0:  μboys − μgirls > 0

against the claim

Ha: μboys − μgirls ≤ 0

2) The significance level is set at 0.01

3) The critical region is z  ≤  ± 1.28

4) The test statistic

Z= p1-p2/ sqrt [pcqc( 1/n1+ 1/n2)]

Here p1= 397/768= 0.5169  and p2= 331/745=0.4429

pc = 397+331/768+745

pc= 0.4811

qc= 1-pc= 1-0.4811=0.5188

5) Calculations

Z= p1-p2/ sqrt [pcqc( 1/n1+ 1/n2)]

z= 0.5169-0.4429/√ 0.4811*0.5188( 1/768+  1/745)

z= 2.82

6) Conclusion

Since the calculated value of z= 2.82  does not lie in the critical region  the null hypothesis is accepted and it is concluded that the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls.

7)

The value of p is 0 .00233. The result is significant at p < 0.10.

8 0
2 years ago
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