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Alenkasestr [34]
2 years ago
14

The heights of the peach trees in an orchard are normally distributed with a mean of 12.5 feet and a standard deviation of 1.8 f

eet.
what is the height of a peach tree with a z-score of -0.5?

Enter your answer rounded to the nearest tenth, in the box.
Mathematics
1 answer:
Zina [86]2 years ago
8 0

Answer:

i think 1.8 not sure tho

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(10×2+99×-2)÷(×+10)=
hammer [34]

the answer is: -178/x+10

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At a basketball game, a team made 56 successful shots. They were
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A reflecting pool is shaped like a right triangle, with one leg along the wall of a building. The hypotenuse is
maria [59]

Answer:

8 ft, 15 ft, 17 ft

Step-by-step explanation:

Let x feet be the length of the side along the building. If the hypotenuse is 9 feet longer than the side along the building, then the length of the hypotenuse is x+9 feet. If the third side is 7 feet longer than the side along the building, then the length of the third side is x+7 feet.

This triangle is right triangle. By the Pythagorean theorem,

x^2+(x+7)^2=(x+9)^2,\\ \\x^2+x^2 +14x+49=x^2+18x+81,\\ \\x^2-4x-32=0,\\ \\D=(-4)^2-4\cdot 1\cdot (-32)=16+128=144,\\ \\x_{1,2}=\dfrac{-(-4)\pm\sqrt{144}}{2\cdot 1}=\dfrac{4\pm12}{2}=-4,\ 8.

The length of the side cannot be negative, thus x=8 ft. Then x+7=15 ft, x+9=17 ft.

8 0
2 years ago
PLEASE HELP HELPPPPPPPPP
professor190 [17]

Answer:

x+2y=- 7

x-2y =9

Step-by-step explanation:

Solving Steps

2x+4y=-14

x-2y=9

Divide both sides

(2x+4y) ÷2=-14=2

{x-2y=9

Remove the parentheses

Divide

2x÷2+4y÷2=-7

x-2y =9

Divide

Solution

x+2y=- 7

x-2y =9

5 0
2 years ago
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Quadratic formula 4x^2-16=
m_a_m_a [10]
Look 4x^2-16 is 0 because 4x^2 is 16 so 16 -16 is 0
3 0
3 years ago
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