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elena55 [62]
3 years ago
13

What is the probability that a data value in a normal distribution is between a

Mathematics
2 answers:
Llana [10]3 years ago
7 0

Answer:

answer b.....plz follow me

lorasvet [3.4K]3 years ago
5 0
B is the answer!!!!!!
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I need help I don’t understand this
Hatshy [7]

Answer:

Step-by-step explanation:

lets say "a" for the empty line,

for small triangle; y^2 = 2^2 + x^2

right triangle; we say a for empty line, a^2= 6^2 + x^2

and big triangle covering both triangles, 8^2 = y^2 + a^2

lets add left sides and right sides in each;

x^2 + 4 + x^2 + 36 + y^2 + a^2 = y^2 + a^2 + 64 and we can delete same things for both sides

y^2 and a^2 can be deleted and 4+36 - 64

2(x^2)=24

x^2= 12

and x will be √12

so, y^2 = x^2 + 2^2 which means y^2 = 12+4 y=16

4 0
2 years ago
Asphere has a diameter of 20 ft What is its surface area?<br> The surface area of the sphere is?
Snowcat [4.5K]

Answer:

1256 ft²

Step-by-step explanation:

20 ÷ 2 = 10

4πr²

4 × 3.14 × 10²

4 × 3.14 × 100

4 × 314

1256

8 0
3 years ago
Rachel hikes at a steady rate from a ranger station to a campground that is 20 mi away. After 2 h, she is 13 mi from the campgro
Angelina_Jolie [31]

Answer:

-3.5

The distance Rachel covers per hour is 3.5 miles

Step-by-step explanation:

After 2 hours, she is 13 miles from the campground.

After 4 hours, she is 6 miles from the campground.

Let x be the number of hours, y be the number of miles from the campground, then we have two points (2,13) and (4,6).

The equation of the line passing through the points (x_1,y_1) and (x_2,y_2) is

y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

Substitute:

x_1=2\\ \\y_1=13\\ \\x_2=4\\ \\y_2=6

Hence,

y-13=\dfrac{6-13}{4-2}(x-2)\\ \\y-13=-3.5(x-2)\\ \\y=-3.5x+7+13\\ \\y=-3.5x+20

The slope of the line is -3.5 and it represents that  the distance Rachel covers per hour is 3.5 miles.

8 0
3 years ago
Can I have some help with this, I need to figure out the answer and the reasoning for it.​
dangina [55]

Answer:

B.

Step-by-step explanation:

In statement (1), we are given that m∠BAC=m∠BCA

If the two angles are congruent, this means that the sides opposite the angles are also congruent. These sides are AB and BC. Therefore:

AB=BC    |    B. sides opposite equal angles are equal

:Done

*The side opposite a given angle is the side towards which the angle opens up to. For example, ∠BAC opens up towards the side BC, and ∠BCA opens up towards side BA.

8 0
3 years ago
Write the difference of the expressions 17x−13y+8 and 20x+6y and simplify it.
Nostrana [21]

Answer:

50x

Step-by-step explanation:

The 17 is the loop product or 6. Do reverse division and add the 78 on step three. Good Luck!

5 0
3 years ago
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