The scale of scores for an IQ test are approximately normal with mean 100 and standard deviation 15. The organization MENSA, which calls itself the “high IQ society”, requires a score of 130 or higher. What percent of adults are between IQ of 100 and 130 ?
A)68%
B)47.5%
C)95%
D)81.5%
Answers
Answer:
B) 47.5%
Step-by-step explanation:
Refer to the normal distribution chart attached. If 130 is 2 standard deviations higher than the mean (ignore the numbers beneath the percentages), then by the empirical rule, this means that 34%+13.5%=47.5% of adults are between IQs of 100 and 130. Therefore, option B is correct.
Related Questions
y=2x+3 y=4x+7 solve by elimination
Answers
Answer:
[tex]\displaystyle [-2, -1][/tex]
Step-by-step explanation:
To use the Elimination method, you must get rid of one pair of variables, so that one side is set to zero. So, in this case, we must get rid of [tex]\displaystyle x,[/tex]therefore we will split the second equation in negative half :
[tex]\displaystyle \left \{ {{y = 2x + 3} \atop {-\frac{1}{2}[y = 4x + 7]}} \right. \\ \\ \\ \left \{ {{y = 2x + 3} \atop {-\frac{1}{2}y = -2x - 3\frac{1}{2}}} \right. \\ \\ \frac{1}{2}y = -\frac{1}{2}; -1 = y, -2 = x \\ \\ \\ \boxed{[-2, -1]}[/tex]
I am joyous to assist you at any time.
what is the next step in solving this equation
a. -5x-8=9
b. -13x=9
c. 11x-24=9
d. -21x-24=9
Answers
Hope this helps
David buys 3 movie tickets for $6 each and 2 bags of popcorn
for $2 each. Simplify the expression 3.6 +2.2 to find out how
much money David spent in all
Answers
Answer:
5.8 thats the answer you get when it is simplified and 1 movie ticket=$2 and 1 bag of popcorn= $1
Step-by-step explanation:
what is the highest fractions 2/4 5/6 3/2 1/9 4/5 8/2
Answers
Answer:
8/2
eight halves
Step-by-step explanation:
please mark this answer as brainliest
Which of the following is equivalent to 16 ^3/4
Answers
Answer:
83/5
Step-by-step explanation:
83/5 would be equivalent to 16 3/4.
Answer:
8, or B on Edge.
Just took the quiz. Have a great day
You choose two different movies on a list at random. Out of 10 movies on the list, 6 are action movies. The first movie you choose is an action movie. What is the probability that the second movie is also an action movie? Write your answer as a fraction in simplest form.
Answers
Answer:
5/9
Step-by-step explanation:
You have 10 movies in total. You take 1 out of 6 action movies. Now you have 5 action movies left, so that means the probability is 5/9. It's 5/9 because you chose 1 action movie out of 10 movies in total, so that means there are 9 movies in total left.
Hopes this helps and makes sense!
A conical paper cup has dimensions as shown in the diagram. How much water can the cup hold when full?
Answers
94.2 cm divided by pi which is 3.14 equals to 30 evenly hoped this helped yall out
A six sided die is rolled and a spinner with 5 equal spaces labeled A-E is spun. Find the P(rolling
a 1 and spinning A). Answer as simplified fraction.
Answers
Answer:
1 / 30
Step-by-step explanation:
For a six - sided die :
Sample space = (1, 2, 3, 4, 5, 6)
P(rolling a 1) = required outcome / sample space = 1/6
Sample space for spinner = (A, B, C, D, E)
P(spinning A ) = required outcome / sample space = 1/5
P(spinning A) = 1 / 5
P(rolling a 1 and spinning A) = P(rolling a 1) * P(spinning A) = 1/6 * 1/5 = 1 / 30
what two numbers multiply to 16 and add to -10?
Answers
Answer:
-2 and -8
Step-by-step explanation:
-2 x -8 = 16
-2 + -8 = -10
Answer:
1 and -16
Step by step:
1 x -16 = -16
1 + (-16) = -15
Write the translation T‹1, -3› (x,y) as a composition of a horizontal translation and a vertical translation.
Answers
The translation T‹1, -3› (x, y) can be expressed as a composition of a horizontal translation and a vertical translation as (x + 1, y - 3).
To express the translation T‹1, -3› (x, y) as a composition of a horizontal translation and a vertical translation, we can break it down into two separate translations:
Horizontal translation: T‹1, 0› (x, y)
This translation shifts the coordinates of a point horizontally by 1 unit without affecting the vertical position. It can be expressed as (x + 1, y).
Vertical translation: T‹0, -3› (x + 1, y)
This translation shifts the coordinates of a point vertically by -3 units without affecting the horizontal position. It can be expressed as (x + 1, y - 3).
Combining these two translations, we get the composition:
T‹1, -3› (x, y) = T‹0, -3› (x + 1, y) = (x + 1, y - 3)
To learn more about translation;
https://brainly.com/question/2373420
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What is the area of this figure? Write your answer using decimals, if necessary.
Answers
Answer:
19 x 11 = 209
4 x 3 = 12
7 x 5 = 35
35 + 12 + 209 = 256
PLEASE HELP ILL GIVE BRAINLIEST, DIFFICULT ALGEBRA
Answers
Write an equation in slope-intercept form of the line that passes through the given points.
Answers
HELP PLEASE I HAVE BEEN STUCK FOR HOURS THIS IS DUE- I'll mark brainliest. In parallelogram WXYZ, diagonal WY is drawn, M and N are points on WX and YZ respectively, and WY intersects MN at E. If m<Z= 60°, m<WYX= 84°, and m<NEY= 102°, find m<ZNM. l'll mark brainliest, I'm not sure how to do this problem and I'm stressed-
Answers
Answer:
m<ZNM = 138 degrees
Step-by-step explanation:
Answer:
138°Step-by-step explanation:
We can observe that:
∠ZWY ≅ ∠XYW as alternate interior anglesm∠ZWY = m∠XYW = 84°m∠WEN = 180° - m∠NEY = 180° - 102° = 78°, as straight angle is 180°m∠WZN = 60° - givenConsider sum of interior angles in quadrilateral WENZ:
m∠ZWY + m∠WEN + m∠WZN + m∠ZNM = 360°Substitute values and find the missing angle:
m∠ZNM = 360° - (84° + 78° + 60°) = 138°
On a scale drawing with a scale of 1 in to 25 feet, the height of a building is 8 inches on a
drawing. How tall is the actual building?
Answers
Answer:
200 feet
Step-by-step explanation:
Jamya is making a rectangular blanket. The length of the blanket is 10inches greater than it's worth, W, in inches. Write the function, f(w), that describes the area, in square inches, of Jamya's blanket as a function of the width, w.
Answers
Answer: (w² + 10)inches²
Step-by-step explanation:
Since the width of the rectangular blanket is given as w and the length of the blanket is 10inches greater than it's width, therefore the length will be:
= 10 + w.
Therefore,
length = 10 + w
width = w
Area = length × width
Area = (10 + w) × w
Area = 10w + w²
Therefore, the area of the blanket will be (w² + 10)inches².
3(g + 4) = 9
Need help
Answers
Answer:
g=-1
Step-by-step explanation:
3(g+4)=9
Divide both sides by 3.
g+4= 9/3
Divide 9 by 3 to get 3.
g+4=3
Subtract 4 from both sides.
g=3−4
Subtract 4 from 3 to get −1.
g=−1
Answer:
3(g+4)=9
or, 3(g+4)/3=9/3 [Dividing both sides by 3.]
or, g+4=3
or, g+4-4=3-4 [Subtracting 4 from both sides.]
So, g=-1
Find the volume of the rectangular prism that has a width of 3 cm, a length of 8cm, and a hight of 7cm
Answers
Answer:
V = 168 cm^3
Step-by-step explanation:
L length - 8cm
W width - 3 cm
H height - 7 cm
V = w h l (Right rectangular prism)
Please Please Pleaaaase help me with this.
Answers
Answer:
multiple 2 with everything
Step-by-step explanation:
two by 3=6 6X2=12 and like this
Identify the measures of exterior angle below. Let x = 15
Answers
PLEASE HELP ILL MAKE BRAINLIEST
Answers
Answer:
56°
Step-by-step explanation:
180 = 40 + (2x) + (3x)
180 - 40 = 40 + 5x - 40
140/5 = 5x/5
x = 28
2(28)
= 56
Answer:
m∠A = 56°
Step-by-step explanation:
A triangle contains 180°. So
180 - 40 = 140
2x + 3x = 140
5x = 140
x = 28
Now, plug in the value for x.
2(28) = 56
Check your work.
40 + 56 + 84 = 180
Which is equivalent to 437
O A 7
B. 12
OC 16
OD. 64
E. 81
Answers
MATH DON'T GIVE ME A LINK ANSWER ASSP
Answers
Answer:
The Answers are D and E
Step-by-step explanation:
all have 1 pair of parallel sides
like the 2 Ls in the word Parallel
Answer:
D and E
Step-by-step explanation:
A. Wrong: is a quadrilateral but has TWO pairs if parallel sides.
B. Wrong: is also a quadrilateral but also has TWO pairs if parallel sides.
C. Wrong: has only ONE pair of parallel sides, but is not a quadrilateral.
D. Right: is a quadrilateral with only ONE pair of parallel sides.
E. Right: is a quadrilateral with only ONE pair of parallel sides.
construct the linear equation for the table
Answers
Why do we randomly select our samples?
Answers
Answer:
The purpose is to increase the generalizability of the results. By drawing a random sample from a larger population the goal is that the sample will be representative of the larger group and less likely to be subject to bias
Step-by-step explanation:
Answer:
Step-by-step explanation:
The purpose is to increase the generalizability of the results. By drawing a random sample from a larger population the goal is that the sample will be representative of the larger group and less likely to be subject to bias
Fill in the table using this function rule.
y = 2x + 5
Answers
First one x = 1
y = 2(1) + 5
y= 7
I’ll tell u all the answers here in order:
7
9
15
19
Answer:
The answer is
[ X ][ Y ]
[ 1 ][ 7 ]
[ 2 ][ 9 ]
[ 5 ][ 15 ]
[ 7 ][ 19 ]
Brainiest please and lot of likes:)
Two angles are vertical angles. If one of the angles measures 35º and the other measures (4x+3)º, which algebraic equation can be used to solve for the value of x?
35 + 4x + 3 = 180
35 + 4x + 3 = 90
35 = 4x + 3
None of these are correct
4x + 3 = 90
Answers
35 = 4x+3
If they're vertical then they're worth the same or equal. So 4x+3 is equal to 35 and then you solve for x from there.
Solve the equation!bhurrypls
Answers
multiply sides by 4
k = 24
Answer:
k = 24
Step-by-step explanation:
k/4 = 6
k is being divided by 4, so multiply both sides by 4.
k/4 * 4 = 6 * 4
k = 24
WILL MARK BRAINLIEST!! FOR RIGHT ANSWERS
Answers
Answer:
1. -3
2. 0/4 or 0
3. -2/3
4. -4/-3
Step-by-step explanation:
Answer:
1. The slope is -3
2. The slope is -1
3. The slope is -1/2
4. The slope is 4/3
Car A went 60km in 5/6hours while car B when 54km in 2/3hours which car was faster? How many times Faster?
Answers
Answer:
Car B is 1.125 times faster than Car A.
Step-by-step explanation:
Speed = Distance / Time
Car A speed = Car A distance / Car A time
= 60 / (5/6) = 72km / hr
Car B speed = Car B distance / Car B time
= 54 / (2/3) = 81 km /hr
Car B is 81 / 72 ie = 1.125 times faster than Car A.