Answer:
C. 95%
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean of 1189 points, standard deviation of 397 points.
Percentage between 395 and 1983 points?
395 = 1189 - 2*397
1983 = 1189 + 2*397
So within 2 standard deviations of the mean, which by the Empirical Rule is approximately 95%, and the answer is option C.
Solve the system of equations by graphing
Answer:
Here's a graph to help you solve this answer:
Find the magnitude of vector v with initial point (7,5) and terminal point (-3,-5).
Answer:
10√2
Step-by-step explanation:
magnitude of vector v = √Δx² + Δy² = √(-3 - 7)² + (-5 - 5)² = √(-10)² + (-10)²
magnitude of vector v = √200 = 10√2
.....................................
Answer:
Step-by-step explanation:
The slope of the line is 4/3.
The value of y when x = 0 is -7.
Equation of line:
y = (4/3)x - 7
What is the perimeter of the trapezoid?
Answer:
we all know that perimeter is the total distance around us.so the perimeter of a trapezoid is the sum of the lengths of its four sides.if one side is missing use the pythagoras theory.
Step-by-step explanation:
if am wrong please tell me right away
three times one number minus a second is 8 and the sum of the number is 12
Answer:
one number is 2
second number if 3 1/3
Step-by-step explanation:
a = one number
b = second number
3a - b = 8
3a + b = 12
add together:
6a = 20
a = 20/6 or 10/3
find 'b':
3(10/3) - b = 8
10 - b = 8
-b = -2
b = 2
Write the log equation as an exponential equation. You do not need to solve for x. log(5x+2)=3
Answer:
So happy you are with brainly
Step-by-step explanation:
34
A theater has 36 seats in the first row, 39 seats in the second row, 42 seats in the third row, and so on. How many seats are in the 18th row?
There are
seats in row 18
Answer: you'll have 87 seats in the 18th row
Step-by-step explanation:
an = a1+(n-1)d
a18= 36+(18-1)3
a18= 36+51
a18= 87
The 18th row will have 87 seats.
What is arithmetic progression?
'An arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.'
According to the given problem,
Number of seats in row 1 = 36
Number of seats in row 2 = 39
Number of seats in 3rd row = 42
Difference between the numbers ( d ) = 39 -36
= 3
We know, according to the formula of Arithmetic Progression,
[tex]a_{n} = a_{1} + (n-1)d[/tex]
We need to find for the 18th row,
[tex]a_{1}[/tex] = 36
d = 3
n = 18
⇒ [tex]a_{18}[/tex] = 36 + ( 18 - 1 )×3
⇒ [tex]a_{18}[/tex] = 36 + 51
⇒ [tex]a_{18}[/tex] = 87
Hence, we can conclude, there will be 87 seats in the 18th row.
Learn more about arithmetic progression here: https://brainly.com/question/13989292
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A bag of marbles contains 4 red marbles, 5 yellow marbles, 2 green marbles, and
7 blue marbles. You draw one marble from the bag. Select ALL FALSE statements.
1.) The probability of drawing a red marble is 33%
2.) The probability of drawing a green marble is 1/9.
3.) The probability of drawing a blue marble is twice as much as the probability of
drawing a green marble.
4.) It is more likely to choose a red marble than a green marble.
Answer:2 and 3
Step-by-step explanation:
They just aren't correct im not sure how to explain
plz help will give brainiest what is x if it equals y*z*f*r*356 if y=18 z=5 f=7 and r=28 quick help
Answer:
Step-by-step explanation:
Please help i need a four letter code in ALL CAPS!
Answer:
LRIW
Step-by-step explanation:
I hope this is what you were looking for
3 points
Using this set of data: 5,7,7,6, 4, 8, 17,5,7,5, 6 and 5 find the following
items.
7
5
6.5
4
8
2
third quartile
interquartile
range
first quartile
O
Back
Next
Page 2 of 5
Answer:
Step-by-step explanation:
NEED ANSWER ASAP WILL GIVE BRAINLIEST FOR CORRECT ANSWER
Answer:
exponent
Step-by-step explanation:
Answer:
power or exponent it can be both, but being specific here, choose exponent
Step-by-step explanation:
i studied this concept trust me
what is the answer to this?
Portions of three rectangles are shaded as shown. What is the area of the shaded region?
8 ft
10 ft
5 ft
12 ft
4 ft
Area of the Shaded Region:
square feet
Answer:
4ft
Step-by-step explanation:
Answer: 77ft
Step-by-step explanation:
10.) A book that normally cost $5.50
is marked up by 40%. What is the
selling price of the book?
Answer:
the answer is seven point seven
32 1/2 meters to feet
Answer:
106.6273
Step-by-step explanation:
Answer:
106.6273 ft
Step-by-step explanation:
What is the distance between (−5,−6) and (−3,−8)?
Choose 1 answer:
(Choice A)
2
(Choice B)
4
(Choice C)
the square root of 4
(Choice D)
the square root of 8
Mr. Muñoz has a coupon for 15% off his entire purchase. He buys binoculars for $105 and hiking boots. He spends a total of $170 before tax.
solve an equation to find how much the hiking boots cost, X, before tax
Answer:
[tex]105(.15)+x=170[/tex]
Hope this helps, have an amazing day!
Answer:
144.50 so he got 25.50 Dollars off
1.) Write a quadratic rule that represents the table below in standard form.
- 7
x
у
-6
-5
0
-5
-8
4
-9
-3
-8
-2
-5
-1
0
0
7
1
16
2.
27
Step-by-step explanation:
1st quadrant is(+,+)
2nd quadrant is(+,-)
3rd quadrant is (-,-)
4th quadrant is (-,+)
Find X and Y, THIS IS DUE VERY SOON, PLEASE HELP!
Answer:
X is equal to 8, and Y is equal to 35
Step-by-step explanation:
You'll use the Pytagoras theorem to find the values of X and Y.
help pleaseeeeeee :(
Answer:
Do 16 times pi.
Step-by-step explanation:
The closest answer is D.
Answer:
8 (option 1)
Step-by-step explanation:
Mark it as option 1 => 8 is the crt answer
2pi r = 16
r = 8
what is meant by the present value of money?
Answer:
Present value (PV) is the current value of a future sum of money or stream of cash flows given a specified rate of return. Future cash flows are discounted at the discount rate, and the higher the discount rate, the lower the present value of the future cash flows.
How to find PV:Calculating present value is called discounting. Discounting cash flows, like our $25,000, simply means that we take inflation and the fact that money can earn interest into account.
...
Calculating Present Value Using the Formula
FV = the future value.
i = interest rate.
t = number of time periods.
Step-by-step explanation:
Answer: Present value, also known as discounted value, is a financial calculation that measures the worth of a future amount of money or stream of payments in today’s dollars adjusted for interest and inflation. In other words, it compares the buying power of one future dollar to purchasing power of one today
Step-by-step explanation:
you deposit $1,200 in a bank account. Find the balance after 4 years in the account pays 3.5% annual interest compounded monthly
Answer:
The balance after 4 years would be $1,380.05.
Step-by-step explanation:
Given that you deposit $ 1,200 in a bank account, to find the balance after 4 years in the account pays 3.5% annual interest compounded monthly, the following calculation must be performed:
1,200 x (1 + 0.035 / 12) ^ 4x12 = X
1,200 x 1.00291666 ^ 48 = X
1,380.05 = X
Therefore, the balance after 4 years would be $1,380.05.
Answer:
The balance after 4 years in account pays 3.5% annual interest compounded monthly is 1308.05$
if x =31 and z=27 then what is the value of y?
Answer: y = 89
Step-by-step explanation:
[tex]x=\frac{y-z}{2} \\\\31=\frac{y-27}{2}\\\\62=y-27\\\\89=y[/tex]
What is the value of z for the equation 2 -- +22?
O
-3
O-1
0 1
3
Answer:-1
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
pls help me find the missing dimension
Answer:
4
Step-by-step explanation:
2 times 3 times ?
=4
Triangle PQR with vertices P(-2, 3), Q(2, 4),
and R(1, -1) in the line x = -3.
9514 1404 393
Answer:
P'(-4, 3)Q'(-8, 4)R'(-7, -1)Step-by-step explanation:
Reflection over the line x=a is accomplished by the transformation ...
(x, y) ⇒ (2a -x, y)
For 'a' = -3, this becomes ...
(x, y) ⇒ (-6 -x, y)
P(-2, 3) ⇒ P'(-6-(-2), 3) = P'(-4, 3)
Q(2, 4) ⇒ Q'(-6-2, 4) = Q'(-8, 4)
R(1, -1) ⇒ R'(-6-1, -1) = R'(-7, -1)
"Petra is making donuts by stamping circles in dough using a pastry stamp with a radius of 1.5 inches. For the donut hole, she stamps out a circle of dough using a pastry stamp with a radius of 0.5 inches." What is the area of the donut hole? Use 3.14 for . *
Answer:
6.28
Step-by-step explanation:
[tex](3.14)(1.5) {}^{2} = 7.065 [/tex]
[tex](3.14)(0.5) {}^{2} = 0.785[/tex]
[tex]7.065 - 0.785 = 6.28[/tex]
In the triangle, ABC, the measure of ∠A is 30° and the measure of ∠C is 90°. What is the measure of ∠B?
Answer:
60°
Step-by-step explanation:
angle A +angle B +angle C = 180
30° +B+90°= 180
120°+B=180°
B=180°-120°
B=60°
Please help me ASAP please
Answer:
The total money you pay is dependentThe time is independentStep-by-step explanation:
First lets lay out our vocabulary
Dependent is the variable that relies on the other variable
Independent is the variable that can change however it can unlike the dependent
Since you HAVE to know the time to get the money, the time is independent.
The amount of time affects the total money as it goes up