An IQ test is known to have an approximate normal distribution with mean 100 and standard deviation 15. Using the Empirical Rule, about what percentage of test takers will have an IQ score between 85 and 115?
Answers
Answer: 68%
Step-by-step explanation:
Empirical rule is basically using a bell curve along with mean and SD to find the center percentage. So take the mean right. 100 if you add 15 which is the SD you get 115 or 34.1% from 100 to 115. If you do the same thing but subtract this time 100-15=85 34.1% again from 85 to 100. So 85 to 115 is 34.1%+34.1%=68%
Related Questions
Question 1: Find the area of each triangle
(a)
(b)
10cm
8cm
7
6cm
Answers
Answer:
a)=80cm^2 b)=42cm^2
Step-by-step explanation:
10x8=80
7x6=42
add cm^2 at the end
Once you find the total area of a composite figure, are you done with the problem?
Answers
Answer:
Yes, if the area is all you are asked to calculate.
Step-by-step explanation:
Angle K measures 67º and angle L measures 119°.
Circle O is inscribed by quadrilateral L M N K.
What are the measures of angles M and N?
m Angle M = 61o and m Angle N = 113o
m Angle M = 67o and m Angle N = 119o
m Angle M = 113o and m Angle N = 61o
m Angle M = 119o and m Angle N = 67o
Answers
Answer:
C. m Angle M = 113o and m Angle N = 61o
Step-by-step explanation:
It's the only answer that makes all the angles added together equal 360 degrees.
67 + 119 + 113 + 61 = 360
Answer:
C
Step-by-step explanation:
7th grade math again Imao sorry
but ik its a lot but plss
17: -15x +0
18: -17x= -204
19: 21= -7n
20: m/4 = -13
22: -143= 11x
23: -16 + x = --15
26: n-8=-10
27: v/7 =8
28: a+11=20
30: 18+m=8
Answers
Answer:
Down below
Step-by-step explanation:
17: -15x
18: 12
19: -3
20: -52
22: -13
23: 31
26: -2
27: 56
28: 9
30: -10
During a game, a basketball team scored 38 points worth of two-pointers, 33
points worth of three-pointers, and 8 points worth of free throws. How many
shots did the basketball team make during the game?
shots
(Hint: A free throw is worth one point).
Answers
Answer:
I think the answer would be :
19 + 11 + 8 = 38 .
Answer:
19 + 11 + 8 = 38 .
Step-by-step explanation:
The perimeter of a rectangle is 158 cm. If the length is 7 more than 3 times the width:
i)
Write an equation for the length (l) in terms of the width (w).
Use your understanding of simultaneous equations to determine the unknown
dimensions.
Find the area of the rectangle.
Answers
Length =3x+7
Perimeter of rectangle = 158cm
2(l+w)=158
2(3x+7+x)=158
2(4x+7)=158
8x+14=158
8x=158-14
x=144/8
x=18
Therefore the width of the rectangle is 18cm
Length=3x+18+7
54+7=61cm
Area=lxw
=61x18
=1098^2
PLEASE HELP I NEED TO GET THIS DONE ASAP !!!!!
Answers
Answer:
50.27 cm²Step-by-step explanation:
Shaded area is the difference in the areas of big and small circles.
Circle area formula: A = πr²A = π(5²) - π(3²) = π(25 - 9) = 16 π = 50.2654824574 ≈ 50.27cm²Answer:
area of shaded region
=π5²-π3²=50.2857142857cm²
Step-by-step explanation:
to find shaded region first find area of big circle and of small
subtract area of small circle from big circle.
SOLVE FOR X
plz this is like the 5th time i ask, plz don’t respond with links
Answers
Answer: I used the Pythagorean theorem and got 6.24, but if I was supposed to use another method, just let me know.
The formula is a^2+b^2=c^2
a=5
c=8
b=?
5^2+b^2=8^2
25+b^2=64
b^2=39
b=6.24,
(If it doesn't work, put x=6.24, x=-6.24. It can be both technically, but most teachers ask only for the first one. )
What is the volume of a cube with 1/2
inch sides?
Answers
Answer:
1/8 in.
Step-by-step explanation:
1/2*1/2*1/2=1/8
PLEASE HELP ASAPPPPPP!!!!!!!!!!!!
Answers
Answer:
324
Step-by-step explanation:
divide 752 by 2 to get 376
then subtract 52 from 376 to get 324
pls answer it now!!
argatogozaimasu!!
Answers
Answer:
850 and 23
Step-by-step explanation:
Here is an expression 3*2t.
Evaluate the expression when t is 1
Answers
A = 6x – 2
B = 4x + 48
Answers
Answer:
X=25
angle A=148
Step-by-step explanation:
since they are alternating angles
A=B
6x-2=4X+48
solve for X
6x-4x=48+2
2x=50
X=25
angle A= 148
Answer:
148
Step-by-step explanation:
I got it right on khan
78 is 65% of what number (can someone explain how to solve this?)
Answers
Answer:
120
Step-by-step explanation:
78 is 65% of what number.
Let's break down this expression.
In this case "is" means "equals" so we will use the equal sign (=)
65% can be written as 0.65 or 65/100
"of" indicates multiplication
"what number" will be represented by x.
Now, put this all together.
78 = 0.65 • x
To solve for x, divide both sides by 0.65
120 = x
This is your answer.
Check this by finding 65% of 120.
0.65 • 120 = 78
Your answer is correct.
Hope this helps!
if B is the midpoint of AC, and AB = 12 cm. How long is segment BC? A 12 cm B
Answers
Answer:
6
Step-by-step explanation:
because if B is the mid point of AC And ab is 12 cm If we divide 12 by 2 it'll be 6..but I'm not sure sorry
12 cm
Explanation:
A mid point is halfway between to points. If from A to B is 12 and B is the midpoint of AC, we know BC is 12 as well.
Here is a visual representation:
A___12___B___12___C
Have a wonderful day :)
1.
a.
A cookie recipe uses 3 cups of flour to make 15 cookies. How many cookies can you make
with this recipe with 4 cups of flour? (Assume you have enough of the other ingredients.)
b.
A teacher uses 36 centimeters of tape to hang up 9 student projects. At that rate, how
much tape would the teacher need to hang up 10 student projects?
Answers
Answer:20 cookies
Step-by-step explanation:
Help, please
A: 2
B: -2
C: 1/2
D:-1/2
Answers
Answer:
[tex]\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \int\limits^a_b {x} \, dx \geq \sqrt{x} \left \{ {{y=2} \atop {x=2}} \right. \frac{x}{y} \alpha \alpha \alpha =\beta[/tex]
Step-by-step explanation:
What is the measure of angle A?
Answers
Answer:
∠ A = 35°
Step-by-step explanation:
The measure of the tangent- tangent angle A is half the difference of the intercepted arcs.
minor arc = 145°
major arc = 360° - 145° = 215°
Then
∠ A = [tex]\frac{1}{2}[/tex] ( 215 - 145) = [tex]\frac{1}{2}[/tex] × 70° = 35°
An artist creates 8 identical ceramic bowls. The bowls contains some glass and 59.2
pounds of clay. The artist uses a total of 73.6 pounds of clay and glass to make the
bowls. Each bowl contains how many pounds of glass?
Answers
six times the sum of nine and a number
Answers
Answer:
6(9+x)
Step-by-step explanation:
Answer:
[tex]6(x + 9)[/tex]
mmm it's according to me
There are two similar packages. The ratio of the volumes is 8:125. Determine the dimensions of the bigger package. The dimensions of the smaller package are... Height= 45cm, Length= 80cm, and Width= 25cm.
Length of bigger package =
cm
______________
Width of bigger package =
cm
______________
Height of bigger package =
cm
PLS HELP ME PLS ASAP. I WILL GIVE U THE BRAINLIEST ANSWER PLS HELP NOWW!!!!!!
Answers
Step-by-step explanation:
since packages are similarsimilar packages. The ratio of the volumes is 8:125. Determine the dimensions of the bigger package. The dimensions of the smaller package are... Height= 45cm, Length= 80cm, and Width= 25cm.
Length of bigger package = 80×125/8=1250cm
Width of bigger package =25×125/8=390.625cm
Height of bigger package =45×125/8=703.125cm
hii please help i’ll give brainliest!!
Answers
Answer:
third one i think soo ( a push or pull acting on an object )
Meg and Theo each thought of five numbers. Meg's first number was 0, and so was Theo's. Meg added 2 each time to get her other numbers, and Theo added 4 each time. Which statement correctly compares Theo and Meg'snumbers? A Each of Theo's numbers is 2 more than Meg's corresponding number, because Theo adds 2 more than Meg to get the next number. B Each of Theo's numbers is half of Meg's corresponding number, because Theo adds half as much as Meg to get the next number. C Each of Theo's numbers is 4 more than Meg's corresponding number, because Theo adds 4 each time to get the next number. D Each of Theo's numbers is double Meg's corresponding number, because Theo adds twice as much as Meg to get the next number.
Answers
Answer:
D. Each of Theo's numbers is double Meg's corresponding number, because Theo adds twice as much as Meg to get the next number.
Step-by-step explanation:
Meg = 0, 2, 4, 6, 8
Theo = 0, 4, 8, 12, 16
Second number of Theo is 4 which is double of 2 (Meg second number)
This applies to the third, fourth and fifth number of Theo
Therefore,
Each of Theo's numbers is double Meg's corresponding number, because Theo adds twice as much as Meg to get the next number.
One of the legs of a right triangle measures 1 cm and its hypotenuse measures 4 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.
Answers
Answer:
3.9 cm
Step-by-step explanation:
One of the legs of a right triangle measures 1 cm and its hypotenuse measures 4 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.
We can solve the above question using Pythagoras Theorem
Hypotenuse ² = Opposite ² + Adjacent ²
From the above question
Hypotenuse = 4 cm
1 leg = Opposite = 1 cm
Other leg = Adjacent = x
Hence
4² = 1 ² + x²
x² = 4² - 1²
x = √ 16 - 1
x = √15
x = 3.8729833462 cm
Approximately to the nearest tenth = 3.9 cm
The measure of the other leg is 3.9 cm
I’ll give brainliest!!!!HELP ASAP
Answers
Answer:
Step-by-step explanation:
im not sure but i think that you can either say theat you can turn the freaction into a percentage or turn the percentage into a fraction and then you can start comapring them i hope it helps?
Answer:
first the fraction should be converted in percent.
later both the percent can compared..
the circumference of a circle is 6.908 kilometers. what is the circles diameter?
Answers
Answer:
2.19888km
Step-by-step explanation:
C=2πr
d=2r
d=C
π=6.91
π≈2.19888km
Answer: The diameter rounded to the nearest hundredth is 2.20 kilometer, if you need to round to a different place value, the work is shown below.
Good Luck!
Step-by-step explanation:
C = πd
6.908 = πd
π π
2.198884694...kilometers = d
HELP ME PLZ 20 POINTS AND BRAINLIEST
Answers
Answer:
35.9 units cubed
Step-by-step explanation:
Hello There!
The figure shown is a rectangular prism
The formula for volume of a rectangular prism is
Length times width times height
The dimensions for the shown figure are given
height = 4 1/2
length = 2 1/8
width = 3 3/4
given this information we just plug it in to the formula
so
[tex]V=3\frac{3}{4}*4\frac{1}{2} *2\frac{1}{8}[/tex]
then we plug it in to a calculator and get that the volume is equal to
35.859375
finally we round to the nearest tenth and get that the volume is equal to
35.9 units cubed
Ellie works in the produce section at a grocery store. The store receives a shipment of green and red apples that weighs 20.4 pounds in total. Ellie separates the green and red apples into bins by color. If red apples make up 1 4 of the shipment by weight, how many pounds of apples are green?
Answers
Answer:
15.3
Step-by-step explanation:
Answer:
15.3
Step-by-step explanation:
If triangle BNV ~ triangle BRG, BR=4x+7 and BG= 18 find the value of x
Answers
Answer:
x=5
Step-by-step explanation:
The value of [x] would be 4.17.
What is triangle?A triangle is a polygon with three edges and three vertices.
The sum of two sides of a triangle is greater then the third side. Mathematically -
a + b > c
There are different types of triangles such as -
equilateral triangle , scalene triangle , isosceles triangle etc.
Given is triangle BNV is similar triangle BRG,
Since triangle BNV is similar triangle BRG, we can write -
4x + 7 = 18
4x = 25
x = 4.17
Therefore, the value of [x] would be 4.17.
To solve more questions on triangles, visit the link below-
brainly.com/question/25950519
#SPJ5
plz help plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz 50 points
Answers
Answer:
d1 = 192
d2 = 192
Step-by-step explanation:
step 1
From the imformation given, the distance is the same
so from the table
d1 = 64t
d2 = 48(7-t)
the distance is the same, it means
d1 = d2
therefore we can get the time(t) from here
64t = 48(7-t)
64t = 336 - 48t
collect like terms
64t+48t = 336
112t = 336
t = 336/112
t = 3
substitute t into d1 to get the distance
d1 = 64t
d1 = 64 × 3
d1 = 192
Note, d1 = d2
d2 = 192 too