All categories

3 years ago

I really need help, please

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

6 0

here, base(b)=7, perpendicular(p)=8 and hypotenuse(h)=?(c)

by using pythagoras theorem.

h^2=p^2+b^2

or,h^2=8^2+7^2

or,h^2=113

or,h=

$\sqrt{113}$

You might be interested in

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

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

8 0

2 years ago

Your favorite baseball player is doing much better this year than he did last year. last year he got 5656 hits. this year he has

muminat

186,648 hits (which in baseball is pretty much impossible lol)

5 0

3 years ago

Given that g(x)=3x²-5x+7 find the following: g(-x)

AURORKA [14]

G(x) = 3x² - 5x + 7
g(-x) = -(3x² - 5x + 7)
g(-x) = -3x² + 5x - 7

This equation cannot be solved because of a few reasons,

1. This equation didn't show that it equals to 0.
2. Even if it equals to zero, square root of a negative number cannot be solved.
(I will show you what I mean)

-3x² + 5x - 7
is the same as
3x² - 5x + 7
by shifting the equation,

for example,
1 - 3 = -2
shifting other side
2 = -1 + 3

using 3x² - 5x + 7 to solve,

$Solve\ using\ the\ formular\ \ \boxed{ x= { \frac{-b \pm \sqrt{b^2-4ac} }{2a} } }$
a = 3
b = -5
c = 7
$x= { \frac {-(-5) \pm \sqrt{ (-5)^2-4(3)(7) } }{2(3)} }$
$x= { \frac {5 \pm \sqrt{-59} }{6} }$

∴This equation cannot be solved.

5 0

3 years ago

Find a solution to the following system of equations. -2x + y = -3 -x + 2y = 3

GalinKa [24]

Answer:

Step-by-step explanation: 3+2=5

5 0

3 years ago

Read 2 more answers

Find the Value of X 1. Solve for X algebraically. 2. Using complete sentences, describe your method for finding X.

kogti [31]

Answer:

x=125

Step-by-step explanation:

7 0

2 years ago

I really need help, please​

I really need help, please