3 years ago

Lines that are perpendicular have ___________________ slopes.A. opposite reciprocalb. same

Mathematics

1 answer:

shtirl [24]3 years ago

6 0

A)). opposite reciprocal

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Step-by-step explanation:

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3 years ago

In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older

earnstyle [38]

Answer:

Step-by-step explanation:

In the past, mean of age of employees

i.e. $\mu = 40$

Recently sample was taken

n = sample size = 60

Mean of sample = 45

Std dev of sample s = 16

$H_0: \bar x = 40\\H_a: \bar x >40$

(Right tailed test)

Since only population std deviation is known we can use t test only

Std error = $\frac{s}{\sqrt{n} } \\=\frac{16}{\sqrt{61} } \\=2.049$

Mean difference = 45-40 =5

Test statistic t= $\frac{5}{2.049} \\=2.441$

df = 60

p value =0.008739

Since p < 0.05 we reject null hypothesis

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3 years ago

Estimate 864/54 by first rounding each number so that it has only 1 nonzero digit.

KiRa [710]

Answer:

Step-by-step explanation:

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2 years ago

P+6/6+m*n; use m = 4, n = - 1, and p = -6 help plz i dont want to fail

Gemiola [76]

Answer:

The answer is Zero

Step-by-step explanation:

P+6/6+m*n

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The answer is Zero

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3 years ago

Evaluate if m = 16 and p = 2. 1 2 m + 3p A) 10 B) 14 C) 18 D) 48

Ivenika [448]

Put the values of m and p to the expression:

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3 years ago