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Degger [83]
3 years ago
14

X^2+16x=3 what number must i add to make this a perfect square?

Mathematics
2 answers:
Arada [10]3 years ago
5 0

Answer:

x = ± √ 67 − 8

Step-by-step explanation

I think this is the answer.

svetlana [45]3 years ago
3 0

Answer:64 apex

Step-by-step explanation:

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Help please with number 11
Jobisdone [24]

Answer:

No

Step-by-step explanation:

The triangles are not similar since triangle B has an angle (18 cm) that does not correspond to 10, unlike the other angles which you can get by multiplying 3/2.

3 0
3 years ago
Read 2 more answers
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
Find the slope of the line that passes through the two given points of (-3, 4) and (-3, -8)
Lynna [10]

Answer:

it is not express because the line is parallel at y axis

Step-by-step explanation:

8 0
3 years ago
SHannon is going on a 12-mile hike. She hiked 4 7/8 miles before lunch and 3 3/4 miles after lunch. how many miles does she have
Ne4ueva [31]
She has 3.878 miles left to hike. (439/500 in fraction form)
4 0
3 years ago
The area of a rectangle is 12x^2 - 29x + 15. The width is 4x-3. What is the length of the rectangle.
allochka39001 [22]

Answer:

Step by step explanation :

Given:

it is given that in a rectangle the area is is 12x^2 -29x + 15

and the width is 4x- 3

Solution :

The rest is given in pic.

Thank u, please please mark it is Brainliest!

Hope u submit on time!

5 0
3 years ago
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