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3 years ago

7

The proper natation for a normal distribution with a mean of 250 and a standard deviation of 25 is?

1 answer:

Zolol [24]3 years ago

5 0

N(250,25)
That's all it is

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Mice21 [21]

Answer:

y= -2/1x -4

Step-by-step explanation:

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3 years ago

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The big room measured 19 ft 10 in. by 22 ft 1 in. About how many square feet of carpet are needed to re-carpet the big room?

Katyanochek1 [597]

Answer:=/

Step-by-step explanation:

6 0

3 years ago

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Which equation represents y = −x2 + 6x + 7 in vertex form? y = −(x + 3)2 + 4 y = −(x − 3)2 + 10 y = −(x + 3)2 + 2 y = −(x − 3)2

Colt1911 [192]

$\text{The vertex form:}\ y=a(x-h)^2+k\\\\f(x)=ax^2+bx+c\to h=\dfrac{-b}{2a},\ k=f(h)\\\\\text{We have}\ y=-x^2+6x+7\to f(x)=-x^2+6x+7\\\\a=-1,\ b=6,\ c=7\\\\h=\dfrac{-6}{2(-1)}=\dfrac{-6}{-2}=3\\\\k=f(3)=-3^2+6(3)+7=-9+18+7=16\\\\Answer:\ \boxed{y=-(x-3)^2+16}$

8 0

3 years ago

Work out the surface area of this cylinder.<br> Radius= 12 cm<br> Height= 35 cm

Ad libitum [116K]

3543.72 cm^2.

Hopefully it helped ya

7 0

3 years ago

likoan [24]

Answer:

1) -
2) +

3) -
4) +

Step-by-step explanation:

сумма внутренних углов треугольника не должна превышать 180 градусов

6 0

2 years ago