Answer:
0.0228
Step-by-step explanation:
Let us assume that the mean (μ) = 2 and the standard deviation (σ) = 0.5
Z score is a standard score used to measure the number of standard deviations by which the raw score (x) is above or below the mean. It is given by the equation:
[tex]z=\frac{x-\mu}{\sigma}[/tex]
For x > 3
[tex]z=\frac{x-\mu}{\sigma} =\frac{3-2}{0.5}=2[/tex]
From the normal distribution table, P(x > 3) = P(z > 2) = 1 - P(z < 2) = 1 - 0.9772 = 0.0228
If you want to buy an item in a store that cost $43 and is on sale for 40% off, then how much would the item actually cost you after the discount ? round to the nearest cent
Answer:
$25.80
Step-by-step explanation:
40% = 40/ 100 = 4/10 = 0,4
There is a 40% discount, which means that the amount multiplied by more then 1 (for example 1,4) would increase the amount... That isn't right because it is a discount!
So you need to subtract the 40%, so (1 - 0.4 =) 0.6
The amount multiplied by 0.6 will be the correct amount, being $43 * 0.6 = $25.80 (rounded to the nearest cent).
The amount the item actually cost after the discount is $25.80
Lamar has been given a list of 6 bands and asked to place a vote. His vote must have the names of his favorite and second favorite bands from the list. How many different votes are possible?
Answer:
30
He has 6 options for 1st place and 5 for second place. Multiply the two and you get 30
Hope this helps :)
Is there anyone who can solve sequence tables.
Yes I can solve the sequence table
Give me any question you prefer
Question: 5 ( x +20)= 7x +30
Answer:35
Simplifying
5(x + 20) = 7x + 30
Reorder the terms:
5(20 + x) = 7x + 30
(20 * 5 + x * 5) = 7x + 30
(100 + 5x) = 7x + 30
Reorder the terms:
100 + 5x = 30 + 7x
Solving
100 + 5x = 30 + 7x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7x' to each side of the equation.
100 + 5x + -7x = 30 + 7x + -7x
Combine like terms: 5x + -7x = -2x
100 + -2x = 30 + 7x + -7x
Combine like terms: 7x + -7x = 0
100 + -2x = 30 + 0
100 + -2x = 30
Add '-100' to each side of the equation.
100 + -100 + -2x = 30 + -100
Combine like terms: 100 + -100 = 0
0 + -2x = 30 + -100
-2x = 30 + -100
Combine like terms: 30 + -100 = -70
-2x = -70
Divide each side by '-2'.
x = 35
Simplifying
x = 35
Hope it helps. Please tell me if im correct
Answer:
35
Step-by-step explanation:
5 * X= 5x
5* 20=100
these are for the ones inside the pararenthesis
so....
5x + 100= 7x+30
subtract 30 from both sides
5x+100-30= 7x-30-30
5x+70= 7x
now we need the variable on one side
so we subtract 5x on both sides
5x-5x+70= 7x-5x
70= 2x
now we divide by 2 on both to isolate the variable
70/2= 2/2
35=x
that's ur answer
hope this helped :D
At their family's pizzeria, Dave makes 6 pizzas in the first hour it is open and 3 pizzas each hour after that. Lauren makes 11 pizzas in the first hour and 3 pizzas each hour after that. If the pizzeria is open for 6 hours, how many pizzas will they make in all?
Answer:
47 pizzas
Step-by-step explanation:
Dave makes 6 pizzas in the first hour it is open and 3 pizzas each hour after that.
If the number of hours after the first hour is represented as x, then the number of pizzas he makes after x hours is:
6 + 3x
Lauren makes 11 pizzas in the first hour and 3 pizzas each hour after that. Then:
11 + 3x
The pizzeria is open for 6 hours in all, that is, 5 hours after the first hour.
This means that:
x = 5
The total amount of pizzas that Dave and Lauren make is:
6 + 3x + 11 + 3x
=> 17 + 6x
Therefore, the total amount of pizza they make 5 hours after the first hour is:
17 + 6(5) = 17 + 30 = 47 pizzas
explain how you found the equation that represents aunt andreas decorating plans from the table
Answer:
Answer: The number of balloons varies directly with the number of tables. The two variables are directly proportional. The relationship of balloons to tables is the ratio 5:1, where 5 is the constant of variation. Use the equation y = kx, where k is the constant of variation resulting in the equation y = 5x.!!!!!!!!!
licze jako najlepsza odpoiedz!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
Answer:
Sample Answer: The number of balloons varies directly with the number of tables. The two variables are directly proportional. The relationship of balloons to tables is the ratio 5:1, where 5 is the constant of variation. Use the equation y = kx, where k is the constant of variation resulting in the equation y = 5x.
Step-by-step explanation:
Grayson is a kickboxing instructor who will be teaching classes at a local gym. To get certified as an instructor, he spent a total of $130. Grayson will be earning a base salary of $58 per month from the gym, plus an additional $12 for every class he teaches. If Grayson teaches a certain number of classes during his first month as an instructor, he will earn back the amount he spent on certification. How much will Grayson's expenses and earnings be? How many classes will that take?
Answer:
If Jeffrey takes 50 classes in his first month as an instructor, he will earn back the amount he spent on certification.
Step-by-step explanation:
Solve for h.
–2 − 10h = –11h − 20
｡☆✼★ ━━━━━━━━━━━━━━ ☾
-2 - 10h = -11h - 20
+ 2
- 10h = -11h - 18
+ 11h
h = -18
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
｡☆✼★ ━━━━━━━━━━━━━━ ☾
Step-by-step explanation:
-2-10h=-11-20, take -10 to the other side.
-2= -1-20, take 20 to the other side.
-18=-1h
-ve and -ve is pos.
h=18
positive 18
1/16 x 6 then round to 2 decimal places.
Answer:
.38
Step-by-step explanation:
1/16 * 6 = 6/16
Divide the top and bottom by 2
3/8
.375
Round to 2 decimal places
.38
a ferris wheel rotates 9pi/8 radians prior to making a stop the total height of the ferris wheel is 246 ft how far around did the ferris wheel travel round to the nearest whole foot
Answer:
ferris wheel travel approx = 434.72 ft
Step-by-step explanation:
given data
wheel rotates = 9pi/8 radians
total height of the ferris wheel = 246 ft
solution
we can say here that height of the ferris wheel is same as the diameter of the wheel
and wheel is circular in shape
so we get here first radius of wheel that is
radius = half of diameter ..........................1
put here value and we get
radius = 0.5 × 246
radius = 123 ft
and
wheel travel distance = length of arc by a angle of wheel rotates
so here length of arc will be
arc length = radius × wheel rotates angle .....................2
put here value and we get
arc length = 123 × [tex]\frac{9\pi }{8}[/tex]
arc length = 434.7178 ft
so ferris wheel travel approx = 434.72 ft
On a map of a town, a school is located at (–6, 2) and a movie theater is located at (–6, –15). What is the distance from the school to the theater on the map?
Answer:
13 units
Step-by-step explanation:
Since the x-coordinates are the same, you can simply add the absolute value of the y-coordinates.
|2 + (-15)|
or
|2 - 15|
= 13
Therefore, the distance from the school to theater is 14 units.
Answer:
13 units
Step-by-step explanation:
on edge 2020
what is the difference in minutes of median collection times before and after the well was installed
Answer:
25
Step-by-step explanation:
I did this trust me :D
Answer:
25
this will help you
what is the change of base formula
This is the formula you are looking for Logb x = Loga x/Loga b
the graph shows the function f(x)=2^x what is the value of x when f(x)=4
Answer:
2
Step-by-step explanation:
A line has a slope of 5 and passes through (4,2). Write an equation to represent this.
A) y=18x-5
B) y=3x-15
C) y=5x-18
D) y=5 +2x
Answer:
C
Step-by-step explanation:
Area of triangles and trapezoids
Answer:
bh/2 and (top base+bottom base)/2
Step-by-step explanation:
first one for triangles and second one for trapezoids
I hope i'm right
What are the zeros of (fx) =x^2-10x+25
Answer:
Zero of the function f(x) is x = 5
Step-by-step explanation:
Given function is f(x) = x² - 10x + 25
For zeros or x-intercepts of this function,
Put f(x) = 0
x²- 10x + 25 = 0
x² - 2(5)x + 5² = 0
(x - 5)² = 0 [Since, a² - 2ab + b² = (a - b)²]
x = 5
Therefore, x = 5 will be the zero of the given function.
For all real numbers b and c such that the product of
c and 3 is b, which of the following expressions repre-
sents the sum of c and 3 in terms of b ?
B. 3h + 3
C. 3(b + 3)
3
E. -
3
Answer:
E: b/3+3
Step by step:
3 C= b
C + 3 = b/3 + 3 (Adding 3 to both sides)
Answer: E: b/3 + 3
Hope this helps
Which of the following represents 0.63 as a fraction in simplest form?
Answer:
63/100
Step-by-step explanation:
0.63 = 63/100
Fiona found 47 pens for $3.00 . Please help Fiona by figuring out the ratio. (round to 2 decimal places)
Answer:
0.06
Step-by-step explanation:
3/47
Answer
$15.67
trust me I think this is it with the info I have got.
info=information true fact
Aston left his house and ran 4 miles East and then 3 miles north. He then took the diagonal path back home. If he burned 105 calories every mile that he ran, how many total calories did burn on his run
Answer:
he do be running tho
Answer:
He burned a total of 735 calories.
Step-by-step explanation:
4 miles + 3 miles = 7 miles
105 calories/1 mile = 7 miles/ ? calories
105 calories times 7= 735 calories
You are exploring a career in nursing in the state of MA. The average hourly wage for RN is $33.37. You are planning to work 40 regular hours +8 hours overtime at time and a half every week. What were your weekly earnings be?
Answer:
$1,735.24
Step-by-step explanation:
"at time and a half" basically means 1.5
So, the overtime would be 1.5 times the normal hourly wage.
40 regular hours * $33.37 = $1334.8
8 overtime hours * (1.5 * $33.37) = $400.44
$1334.8 + $400.44 = $1735.24
So, the total weekly pay is $1735.24.
My sister asked me what -7+8x7 is but I have too much homework and don't have time to check my answer can you guys answer for me plz?!
Answer:
49
Step-by-step explanation:
-7 + 8 x 7
order of operations says to do 8 x 7 first
-7 + 56
simple addition gets you to
49
Answer:
49
Step-by-step explanation:
-7+8x7
Use PEMDAS
first multiply 8 and 7 =56
then add -7 and +56
56-7 =49
-2 1/2x + 3 1/6 = 5 2/3
PLEASE
Answer:
1/4
explanation:
i think not sure but i think its that
Answer:
x= −73/63
Step-by-step explanation:
try this
Only do question 8
50 points
Topic: Percentage
Answer:
see below
Step-by-step explanation:
Answer:
...
Step-by-step explanation:
The table below shows the lowest temperature, in degrees Fahrenheit, on each of 5 days for a city. What is the Mean temperature, in degrees Fahrenheit, in the city for those 5 days?
Answer:
ion know bu heyyyyyy
Step-by-step explanation:
Answer:
94
Step-by-step explanation:
always sometimes or never
The Capacity of a container will ALWAYS be less than the containers Volume
Explain too
Answer:
sometimes
Step-by-step explanation:
cant explain because i dont know if im right
the ratio of boys to girls in a class is 7:5 there are36
students in the class how many students are girls
Answer:
There are 15 girls
Step-by-step explanation:
Look at the picture
I need help with this asap please!!!
Answer:
54
Step-by-step explanation:
54x
Find the zeros of the function. Write the smaller solution first, and the larger solution second f(x)=(x+2)2-16 smaller x larger x
Answer:
The solutions are x = -6 or x = +2
Step-by-step explanation:
In this question, we are asked to get the series of the equation given. we can find this by equating what we have to zero
Mathematically, we proceed as follows;
(x +2)^2 -16 = 0
This can be rewritten as;
(x + 2)^2 - 4^2 = 0
we can then proceed to use the difference of two squares to finish this off
Thus, we have
(x + 2 + 4)(x + 2 - 4) = 0
(x + 6)(x-2) = 0
X + 6 = 0 or x-2 = 0
x = -6 or x = +2