Answer:
a) 68%
b) 99.7%
c) 95%
Step-by-step explanation:
The mean height for an 8th grader in the State of Florida is 146 cm with a standard deviation of 8 cm. Given a normal distribution, use the Empirical Rule to interpret the data.
Empirical rule states that:
68% of data falls within 2 standard deviations from the mean - between μ – σ and μ + σ .
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .
Mean = 146
Standard deviation = 8cm
a) What percent of 8th graders heights are between 138 cm and 162 cm?
146 - sx = 138cm
146 - 138 cm = 8cm
146 - 162 cm = 8cm
Hence,68% of data falls within 2 standard deviations from the mean - between μ – σ and μ + σ .
b) What percent of 8th graders heights are between 122 cm and 170 cm?
Standard deviation = 8
146 - 122 = 24 cm
146 - 170 = -24cm
24cm/8 cm = 3
Hence,99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .
c) What percent of 8th graders heights are between 130 cm and 162 cm?
146 cm - 130cm = 16cm
162 cm - 146 cm = 16 cm
16cm/8cm
= 2
Hence, 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
Y=|x+2|-3 find the axis of symmetry
Find the slope of the line that passes through (95, -18) and (89, 56).
Answer:
m=−37/3
Step-by-step explanation:
On a map 4.5 inches is equal to 99 miles. How many miles would represent 1 inch?
Answer:
22 inches is the answer
12 + -4 - 2/5 + J - 4/5 J + 5
Answer:
1/5J + 63/5
Step-by-step explanation:
3 + 27y + 15z
x + 9y + 5z
Answer: sum
Step-by-step explanation:
Answer:
sum
Hope this helped!
Have an amazing day!
What the solution to -8+x=3
Answer:
x=11
Step-by-step explanation:
We would add 8 to both sides of the equation, leaving us with x=11
DOES ANYONE KNOW WEDNESDAYS QUESTION PLS HELP I HAVE 5 minutes
Answer:
-1/2Step-by-step explanation:
Hope this helps!! Please consider marking brainliest! Have a good one!!
True or false please help due in a couple of minutes!!!!
Answer:
false
the shape is different
I’m really bad at geometry pls help! Thanks
The right hexagonal pyramid
has a hexagon base with equal-length sides. The lateral
faces of the pyramid are all triangles (that are exact copies of one another) with
heights of 18 ft. Find the surface area of the pyramid.
Answer:
Lateral area of the pyramid = 72 unit²
Step-by-step explanation:
Lateral surface means side part of pyramid. So we nee need to find area of 6 triangles with base 4 and height 6.
Lateral area of the pyramid = 6 x Area of 6 triangles with base 4 and height 6
Hope this helped...
the number of employees went from 7623 to 6824 what percent did this increase or decrease
Answer:
9.5% decrease
Step-by-step explanation:
GIVING BRANLIEST!! Write the following in standard form -8.041x10^-6 PLEASE HELPP!!.
Answer: -8.041x10-6= -86.41
Step-by-step explanation:
Answer:
-0.000008041
Step-by-step explanation:
-8.041 * 10^-6
First, convert the negative exponent.
-8.041 * 1/10^6
Then, multiply. (Using a calculator, preferably.)
THe answer is: -0.000008041
Martin works at Bluebell Ice Cream Parlor. He earns $87.50 for every 7 hours of work. Based on this information how much money would Martin earn for 28 hours of work?
Answer:
$350
Step-by-step explanation:
7x4=28 so you multiply 87.50x4 to get 350
What is the area of a triangle whose base is 10 centimeters and whose height is 20 centimeters? 15 cm2 30 cm2 100 cm2 200 cm2
write in slop intercept form
Create an expression that would represent the area of a triangle.
Answer:
a = 1/2 (15 *5)
Step-by-step explanation:
a = 1/2 (b * h)
1/2 (15 *5)
Answer:
1/2 (15x5)
Step-by-step explanation:
Area = 1/2bh
Which postulate proves the two
triangles are congruent?
A. HL
B. SSA
C. ASA
D. none
Answer:
the answer is b and i need atleast twenty words so it is asa because the middle and side and the right angle
Answer: The answer A: HL
Hope this helps
HELPPPPPPP BRAINLIESTTT
Answer:
7n+5 would get u the perimeter because you can add like terms together so I added all the ns to get that- hope that helps you ❣️
Step-by-step explanation:
what is 7.0893 as a decimal but in word form.
Answer:
seven and eight hundred ninety-three ten-thousandths
Step-by-step explanation:
Which of the following is not equal to -5/6?
2p
O a) -(5/6)
b) 5/-6
C) -5/6
d) -(-5/6)
im board !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
same
Step-by-step explanation:
Answer:
same
Step-by-step explanation: same free coins ;)
What is the domain of the function shown in this graph?
Domain is the set of x. Therefore, the domain starts from least x-value or from left side to the right side.
In the graph, it shows that the domain is from x = 1 to positive infinity.
Therefore the answer is x >= 1
or [1,+infinity) as interval.
This one also thx PLZZ be right
Answer:
D. x = 2
Step-by-step explanation:
[tex]\frac{1}{2} x+3=\frac{5}{2} x-1[/tex][tex]\frac{1}{2} x-\frac{5}{2 }x=-1-3[/tex][tex]-\frac{4}{2} x=-4[/tex][tex]-\frac{4}{2} x (-\frac{2}{4} )=-4(-\frac{2}{4} )[/tex][tex]x = -4(-\frac{2}{4} )[/tex][tex]x=2[/tex]Answer:
x=2
Step-by-step explanation:
1/2x+3=5/2x-1
-1/2x -1/2x
3=4/2x-1
+1 +1
4=2x
/2 /2
2=x
i suck at word problems i don’t understand both of these
Answer:
c and a
Step-by-step explanation:
The highest score on an algebra test was 42 points more than the lowest. When added together, the lowest and the highest score was 154. Find both the lowest and the highest score.
Answer:
lowest: 56 Highest: 98
Step-by-step explanation:
I need help its Khan 2q+2+9
Answer:
2q+11
Step-by-step explanation:
Variables are the same. Only the constants add.
Can someone really help me :(
Area of triangle:
A= 1/2*b*h
= 1/2 *(29)* (19)
= 1/2 *(551)
= 275.5 in^2
Area of rectangle:
A= l * w
= (29) * (10)
= 290 in^2
Total Area:
275.5 + 290 = 565.5 in^2
Hope this helps! Have a great day :)
Answer:
565.5 in
Step-by-step explanation:
The area for a rectangle is A = lw
So A = (29)(10)
A = 290
The area for a triangle is A = 1/2bh
So A = 1/2(29)(19)
A = 1/2(551)
A = 275.5
You combine the two numbers to get a total area of 565.5 in
which one is greater: 5.098 or 5.4
Answer:
5.4
Step-by-step explanation:
The number after the decimal is bigger in 5.4 than 5.098 which is the only number that matters in this question however if both numbers were the same you would move to the next number and whichever one has the bigger number.
answer and ill give brainliest
Answer:
x = 5 22/24 OR x = 5 11/12
Step-by-step explanation:
x - 3/4 = 5 1/6
To solve this we mush use inverse operations
x - 3/4 + 3/4 = 5 1/6 + 3/4
x = 5 22/24
x = 5 11/12
To add the fractions there has to be a common denominator.
1/6 x 4/4 = 4/24
3/4 x 6/6 = 18/24
Keep denominators the same and add the numerators.
If your teacher wants the answer not simplified the answer is
x = 5 22/24
If your teacher wants it simplified the answer is
x = 5 11/12
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
What is the solution to this subtraction sentence?
-5/6 – (-1/2) = ________
A. -4/3
B. -5/6
C. -1/2
D. -1/3
Answer:
D: -1/3
Step-by-step explanation
Answer:
The answer is D.-1/3
Step-by-step explanation:
I took the quiz
student in jakes class were numbered in order from 1 to 24. Jake was asked to choose classmates numbered with multiples of 5 to be in his group. which number could be the number of class mates in his group.
Answer:
number 5 , 10, 15, and 20 could be in his group which is a total of 4 classmates. If Jake's number wasn't a multiple of 5 then there would be 5 classmates.
Answer is most likely 4 classmates!
Step-by-step explanation:
Well we just need to know all the multiples of 5 in between 1 and 24 so we can start counting
5
10
15
20
25 - Bigger than the range
This means that the number 5 , 10, 15, and 20 could be in his group which is a total of 4 classmates. If Jake's number wasn't a multiple of 5 then there would be 5 classmates
Hope this Helps!!! :)
Let me know if I should change anything or if the answer was perfect!!!