K, 8х5 and LM - бх 3

Mathematics

1 answer:

ladessa [460]3 years ago

7 0

Answer:

k=40 and -6x3=-12

hope this helps

Step-by-step explanation:

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Which one of the following formulas defines the area, A A , of a square in terms of its perimeter, p ?

pav-90 [236]

A square has 4 sides of equa length

the perimiter is 4 times the side, or P=4s where s=length of 1 side

the area is length times witdth, but since the length=width, area=s² where s is the length of one side

so express A=s² in terms of P when P=4s

solve for s first in P=4s
P=4s
divide both sides by 4
$\frac{P}{4}=s$

subsitute $\frac{P}{4}$ for s in the other eqaution
$A=s^2$
$A=(\frac{P}{4})^2$
$A=\frac{P^2}{16}$

in terms of the perimiter, the area is $A=\frac{P^2}{16}$

6 0

3 years ago

Given that 10% of the nails made using a certain manufacturing process have a length less than 2.48 inches, while 5% have a leng

zvonat [6]

Answer:

The mean, μ is 2.5063 and

The standard deviation, σ = 2.0499 × 10⁻²

Step-by-step explanation:

Here we have

$z = \frac{x- \mu}{\sigma}$