Answer:
x=7
Step-by-step explanation:
Answer:
7
Steps:
7x − 9 = 40
7x = 40 + 9
x = 49/7
x = 7
Income East and West of the Mississippi
For a random sample of households in the US, we record annual household income, whether the location is east or west of the Mississippi River, and number of children. We are interested in determining whether there is a difference in average household income between those east of the Mississippi and those west of the Mississippi.
Incorrect answer iconYour answer is incorrect.
(a) State the null and alternative hypotheses. Your answer should be an expression composed of symbols:
Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.
(b) What statistic(s) from the sample would we use to estimate the difference?
Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.
Answer:
H0: μ1 = μ2
H1: μ1 ≠ μ2 ;
xbar1 - xbar2
Step-by-step explanation:
The Null hypothesis should state that there is no difference in average household income between those located east and west of the Mississippi
H0: μ1 = μ2
H1: μ1 ≠ μ2
Statistic from the sample that would be used to estimate difference
Statistic refers to the numerical characteristic derived from the sample.
To estimate the difference in the average household income between those located east and west of the Mississippi, we take the sample mean of the two groups
Group 1, East of Mississippi = xbar 1
Group 2, West of Mississippi River = xbar 2
xbar1 - xbar2
Sarah paid $0.75 for 3 limes. How much should she expect to pay for 5 limes at the same price?
O $0.50
O $1.00
O $1.25
O $2.25
Answer:
$1.25
Step-by-step explanation:
0.75 = 3/4
3/4 ÷ 3 = 1/4
1/4 = 0.25
0.25 x 5 = 1.25
Answer:
$1.25
Step-by-step explanation:
Dr. Rodriguez does an experiment with bacteria. She starts with 100 bacteria and records
the number of bacteria every hour after the experiment starts. Assume that the bacteria
growth continues in the pattern shown.
Bacteria Data
S
900
800
700
600
500
400
300
200
100
0
0
2
3
number of hours (x)
A. How many bacteria will there be 5 hr after the experiment starts? Show your
work algebraically, and explain how you found your answer.
B. Write an exponential equation of the form ya.b to represent this situation
Explain why you chose the values of a and b that you did.
C. Using your equation from Part B. find how many bacteria there will be 8 hr after
the experiment starts. Show your work algebraically, and explain how you found
your answer
number of bacteria ()
Answer:
500
Step-by-step explanation:
100x<5x=500
Find the value of x to the nearest tenth.
Answer:
The value of x is 3.5.
write the absolute value function as a piecewise function y=6|x-3|
a construction crew had just finished building a road the road is 6 and 3/5 km long if the crew work for 3 days how many kilometers of the road did they build each day as soon they built the same amount each day write your answer as a mixed number in simplest form
Answer:
2 1/5
Step-by-step explanation:
6 3/5 = 33/5
33/5 ÷ 3 = 11/5 = 2 1/5
Help me with this!!! Fake answers will get reported
Answer:
Step-by-step explanation:
there is an obscure rule that looks like this
DB/AB = AB/CB
AB=40 for this problem
DB = x
CB = 20
then
X/40 = 40/20
X = 40(40/20)
X = 40(2)
X=80
I find that hard to believe too, :D
but the rule says that's right
Erika opened a checking account with $150. She wrote checks for $23.76, $6.78, $7.26, and $6.16. She made one deposit of $45.79. She had a service charge (a deduction) of $2.25. What is her current balance ?
Answer: 154.08$
Step-by-step explanation:
pls help (again) due in 5 mins !!!!
Answer:
Step-by-step explanation:
For i figure
Radius=9×10^3
Diameter=18×10^3
For j figure
Radius=1m
Diameter=2m
For k
Radius=17×10^-2
Diameter=34×10^-2
For l
Radius=25×10^-3
Diameter=50×10^-3
It says a=lw not a=ew
Answer:
pls send the question well
Answer:
yea...........
Step-by-step explanation:
A=lw lol
I need to know what the answer is to this question
Answer:
Parallel.
Step-by-step explanation: All parallel lines have the same slope. (I don't know how to explane this) Sorry.
*Hope this helps*
Answer:
parelell
hope it helps
thank you....
PLEASE HELP ME !!! ASAP
since -3×4x=-12x
therefore 2x×1=2x
Indicate in standard form the equation of the line through the given points.
P(0, -4), Q(5, 1)
Can someone please help me with this?
Answer:
x-y=4
Step-by-step explanation:
(y+4)/(1+4) = x/5
(y+4)/5 = x/5
y+4 = x
-x+y= -4
x-y = 4
The ________________ is the horizontal number line on the coordinate grid.
Answer:
x-axis
Step-by-step explanation:
The horizontal number line is called the x-axis. The vertical number line is called the y-axis. The point where the x- and y-axes meet is the origin.
Hope this helps! <3
The x-axis is the horizontal number line on the coordinate grid.
It is one of the two axes that form the Cartesian coordinate system, used to locate points in a two-dimensional plane. The x-axis runs horizontally from left to right, intersecting with the vertical y-axis at the origin (0,0). It acts as a reference line, assigning numerical values to the horizontal position of points on the grid.
The x-axis allows us to specify the x-coordinate of a point, which represents its horizontal distance from the origin. Positive values are to the right of the origin, while negative values are to the left. By combining the x-axis with the y-axis, we can precisely define the position of any point in the coordinate plane.
To know more about coordinate:
https://brainly.com/question/32836021
#SPJ6
please help due pretty soon
Tara traces a circle from a roll of duct tape that has a diameter of 4 inches. What is the area of the circle she traced?
Answer:
to get the area of a circle, you do pie times radius squaared, so we divide 4 to get the radius. so 2*2 is the radius squared,so now we just times 4 by 3.14= 12.56
so the area= 12.56 inches!
Step-by-step explanation:
Answer:
12.56
Step-by-step explanation:
mary need 50 ft of fence to protect her rectangular garden from squirrels. How long and how wide is the 8 ft more than the width length is if the length is 8 ft more than the width
Answer:
Width of the fence = 8.5 ft
Length of the fence = 16.5 ft
Step-by-step explanation:
Mary need 50 feet of fence to protect her rectangular garden from squirrels. How long and wide is the garden if the length is 8 feet more than the width?
Perimeter of the fence = 2(length + width)
Perimeter of the fence = 50 ft
Width of the fence = x ft
Length of the fence = x + 8 ft
Perimeter of the fence = 2(length + width)
50 = 2{(x+8) + (x)}
50 = 2(x + 8 + x)
50 = 2(2x + 8)
50 = 4x + 16
50 - 16 = 4x
34 = 4x
x = 34/4
x = 8.5
Width of the fence = x ft
= 8.5 ft
Length of the fence = x + 8 ft
= 8.5 + 8
= 16.5 ft
Width of a rectangle is equal to [tex]\boldsymbol{8.5}[/tex] feet and length is equal to [tex]8.5+8=\boldsymbol{16.5}[/tex] feet
Perimeter of a rectangleA quadrilateral having four right angles is known as a rectangle. It can also be described as a square - shaped quadrilateral (equiangular meaning all angles are identical) or a parallelogram with a right angle.
Let [tex]x[/tex] denotes the width [tex](w)[/tex] of a rectangle.
So,
Length of a rectangle [tex](l)=x+8[/tex]
Perimeter of a rectangle [tex]=50[/tex] feet
[tex]2(l+w)=50\\l+w=25\\x+8+x=25\\2x=17[/tex]
[tex]x=8.5[/tex] feet
So,
width is equal to [tex]\boldsymbol{8.5}[/tex] feet and length is equal to [tex]8.5+8=\boldsymbol{16.5}[/tex] feet
Find out more information about rectangle here:
https://brainly.com/question/994316?referrer=searchResults
PLEASE HELP ME 20 POINTS
It would be A because on the other side it's always doubled.
What is the mapping rule for a 180° rotation?
(x, y) → (y, x)
(x, y) → (–y, x)
(x, y) → (y, –x)
(x, y) → (–x, –y)
Answer:
D
Step-by-step explanation:
Answer:
D. (x, y) → (–x, –y)
Step-by-step explanation:
I did the assignment it is correct :)
Which of the x values are solutions to the following inequality? x <21
What do you think deserves türkey
Write Your own thoughts
Answer:
Hey!
Türkey Server Is [tex]\small\tt{\blue{(eodev.com)}}[/tex]
Which equation is true?
O (8.4 x 103) = (3 x 102) = 2.8
O (8.4 x 10°) : (3 x 10) = 28
O (8.4 x 10) - (3 x 10') = 25, 200
O (8.4 x 10°) . (3 x 10') = 252,000
Answer:
(8.4 x 103) = (3 x 102) = 2.8
Step-by-step explanation:
HEL PLEASE!!!
Which is a value for a that makes the following true?
a/-3 −1 >4
-16
-9
9
16
Answer:
-16
Step-by-step explanation:
-a/3 >5,,,, a/3 < - 5,,,,,, a< - 15 hence a should be - 16
Which image is a reflection of the right triangle shown over the given line of reflection?
A blue triangle and a line are shown.The triangle has a horizontal side on the bottom, a vertical side on the right, and a diagonal side that goes up from the left end of the horizontal side to the top of the vertical side. The horizontal side is shorter than the vertical side. A right angle symbol is shown between the horizontal and vertical sides. A vertical line is shown to the right of the triangle.
A. A blue triangle is shown.The triangle has a horizontal side on the bottom, a vertical side on the left, and a diagonal side that goes up from the top of the vertical side to the right end of the horizontal side. The horizontal side is shorter than the vertical side. A right angle symbol is shown between the horizontal and vertical sides.
B. A blue triangle is shown.The triangle has a horizontal side on the top, a vertical side on the right, and a diagonal side that goes up from the left end of the horizontal side to the bottom of the vertical side. The horizontal side is shorter than the vertical side. A right angle symbol is shown between the horizontal and vertical sides.
C. A blue triangle is shown.The triangle has a horizontal side on the bottom, a vertical side on the right, and a diagonal side that goes up from the left end of the horizontal side to the top of the vertical side. The horizontal side is longer than the vertical side. A right angle symbol is shown between the horizontal and vertical sides.
D. A blue triangle is shown.The triangle has a horizontal side on the bottom, a vertical side on the right, and a diagonal side that goes up from the left end of the horizontal side to the top of the vertical side. The horizontal side is shorter than the vertical side. A right angle symbol is shown between the horizontal and vertical sides.
Answer:
i think
B. A blue triangle is shown.The triangle has a horizontal side on the top, a vertical side on the right, and a diagonal side that goes up from the left end of the horizontal side to the bottom of the vertical side. The horizontal side is shorter than the vertical side. A right angle symbol is shown between the horizontal and vertical sides.
His bank offers a simple interest account at 5%, how much interest will Han have earned after 2 years? Do not use symbols, like $, in your answer.
Answer:
Step-by-step explanation:
an account at the bank so where she earns a simple interest rate of 10/%. If she does not add any money to this account, How much money will Kyra have after 1 year? After 2 years ... Where I(t) is the interest earned/owed after t years, ... annually. How much money will Jack have after 1 year? 2 years? 5 years? 10 years?
The number of bus riders was recorded on one route. The data have these values: minimum = 18, lower quartile = 22, median = 26, upper quartile = 29, and maximum = 37.
Which box plot represents the data?
Answer:
b cause its b
Step-by-step explanation:
Answer:
Step-by-step explanation:
THe guy is correct its B
solution to 5y\9-y\9 is equal to 8\9?
Answer:
[tex]y = 2[/tex]
Step-by-step explanation:
1) Simplify 5y/9 - y/9 to 4y/9.
[tex] \frac{4y}{9} = \frac{8}{9} [/tex]
2) Multiply both sides by 9.
[tex]4y = \frac{8}{9} \times 9[/tex]
3) Cancle 9.
[tex]4y = 8[/tex]
4) Divide both sides by 4.
[tex]y = \frac{8}{4} [/tex]
4) Simplify 8/4 to 2.
[tex]y = 2[/tex]
Hence, the answer is y = 2.
Simplify:-12(5/6a-7/8)+1/4(3 1/2a-1 2/5)
Answer:
−49/8a+99/10
( I hope this was helpful ) >;D
Solve for a. Show your work plz.
Answer:
C
Step-by-step explanation:
[tex]\frac{10}{a} =sin 60\\a=\frac{10}{sin~60}\\=\frac{10}{\frac{\sqrt{3} }{2} } \\=\frac{20}{\sqrt{3}} \times\frac{\sqrt{3}}{\sqrt{3}} \\=\frac{20 \sqrt{3}}{3}[/tex]
How to find the height of a cone when only radius is given
Answer:
upload the actually picture of the math problem young lady