3 years ago

Please help, i’ll mark brainliest

1 answer:

6 0

He is incorrect because leg A and B makes a slanted L shape and since it’s slanted the angle has to be less then a 90 degree

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cestrela7 [59]

Answer:no

Step-by-step explanation: because it is an acute triangle

6 0

3 years ago

Shtirlitz [24]

Answer:

900 sample size

Step-by-step explanation:

To determine the sample size for a proportion, the margin of error formula is used to determine this:

$E=Z_{\frac{\alpha}{2} }*\sqrt{\frac{\hat p \hat q}{{n} }$

$n=\hat p \hat q*(\frac{Z_{\frac{\alpha}{2} }}{E} )^2$

Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, $Z_\frac{\alpha }{2}$ is the z score.

Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5

E = 5% = 0.05, $Z_\frac{\alpha }{2}$ = 3. Hence:

$n=0.5*0.5*(\frac{3}{0.05} )^2\\\\n = 900$

6 0

3 years ago

uysha [10]

Answer:

The only fraction i can think of is 2/9

Step-by-step explanation:

6 0

3 years ago

kirill115 [55]

Answer:

82 revolutions Step-by-step explanation:

One revolution will be the circumference of the tire, so multiply pi (3.1416) times the diameter (26 in.) to get 81.68 in. then round it up to 82.

7 0

3 years ago

Ivahew [28]

$hypotensuse \: = \sqrt{ {6}^{2} + {9}^{2} } = \sqrt{36 +81 } = \sqrt{117} = 10.82$

6 0

3 years ago