Answer:
x > 2
Step-by-step explanation:
-2x+1 < -3
-1 -1
-2x < -4
-2x/-2 < -4/-2
x>2
You reverse the sign when dividing by a negative number.
Step-by-step explanation:
x>2
−2x+1<−3
−2x<−3−1
−2x<−4
x>-4/-2
x>4/2
x>2
20pts. The table shows the results of rolling a number cube, with sides labeled 1 through 6, several times. What is the experimental probability of rolling a 3 or a 6?
Enter your answer as a fraction in the simplest form, in the box.
Outcome 1 2 3 4 5 6
Number of times outcome occurred 10 6 4 8 6 6
Answer:
[tex] \frac{3}{6} = \frac{1}{2} [/tex]
Step-by-step explanation:
Because the number 6 outcomes 3 times but 3 doesn't occur.
hope this helps you!
If a normal distribution has a mean of 44 and a standard deviation of 8, what
is the z-score for a value of 46?
O A. 1.25
O B. 1.75
O c. 0.75
O
D. 0.25
Answer:
The answer to this question is gotta be 0
Step-by-step explanation:
Because a normal distribution gives an area between 0 and z and the area for P(X=46) = 0
The correct answer is option D: 0.25. The z-score for a value of 46 is 0.25.
To calculate the z-score for a given value in a normal distribution, we use the formula:
z = [tex]\frac{{x - \mu}}{{\sigma}}[/tex]
where:
x - the value
[tex]\mu[/tex] - the mean
[tex]\sigma[/tex] - the standard deviation
Given:
x - 46
[tex]\mu[/tex] - 44
[tex]\sigma[/tex] - 8
We can plug these values into the formula:
z = [tex]\frac{{46 - 44}}{{8}}[/tex]
z = [tex]\frac{{2}}{{8}}[/tex]
z = 0.25
So, the z-score for a value of 46 is 0.25.
The question is:
If a normal distribution has a mean of 44 and a standard deviation of 8, what is the z-score for a value of 46?
A. 1.25
B. 1.75
C. 0.75
D. 0.25
how do you do question b?
Answer:
Step-by-step explanation:
Not sure
What is the equation of the line that passes through (-2, 2) and (1, -4)?
y=2x-2
y=-2x-4
y=-2x-2
y= 2x+4
Answer:
y = - 2x - 2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ = (- 2, 2) and (x₂, y₂ ) = (1, - 4)
m = [tex]\frac{-4-2}{1+2}[/tex] = [tex]\frac{-6}{3}[/tex] = - 2, thus
y = - 2x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (- 2, 2), then
2 = 4 + c ⇒ c = 2 - 4 = - 2
y = - 2x - 2 ← equation of line
If 300 people are surveyed, how many would be expected to prefer vanilla yogurt?
A circle graph titled Favorite Kind of Yogurt. 25 percent is vanilla, 35 percent is swirl, 40 percent is chocolate.
12
25
50
75
Answer:
The answer is 75%
Step-by-step explanation:
Answer:
75 people
Step-by-step explanation:
If Andy drove 84 miles in 1 hour and 45 minutes, how many miles can he drive in 5 hours?
Answer:
He would be able to drive 240 miles in 5 hours.
Step-by-step explanation:
45 minutes is 75% of an hour, so dividing 84 miles by 1.75 hours gets you 48 miles per hour. If you then multiply 48 mph by 5 hours you will get the correct answer of 240 miles.
Right triangle FHG is shown. The sine of angle F is 0.53. What is the cosine of Angle h ?
Given:
Given that FGH is a right triangle. The sine of angle F is 0.53.
We need to determine the cosine of angle H.
Cosine of angle H:
Given that the sine of angle F is 0.53
This can be written as,
[tex]sin F=0.53[/tex]
Applying the trigonometric ratio, we have;
[tex]\frac{HG}{FH}=0.53[/tex] ----- (1)
Now, we shall determine the value of cosine of angle H.
Let us apply the trigonometric ratio [tex]cos \ \theta=\frac{adj}{hyp}[/tex], we get;
[tex]cos \ H=\frac{HG}{FH}[/tex] ----- (2)
Substituting the value from equation (1) in equation (2), we get;
[tex]cos \ H=0.53[/tex]
Thus, the cosine of angle H is 0.53
What is the surface area of the cylinder
Answer: 468[tex]\pi[/tex] in^2
Step-by-step explanation:
In one month, Mr. Rich earns $9,278 in regular pay and $2,132 in overtime pay. A total of $673 is
deducted from his paycheck for taxes and a company loan. How much is his take-home pay?
$10,737
$10,747
$11,273
$10,727
Final answer:
To calculate Mr. Rich's take-home pay, add together the regular and overtime pay, then subtract the deductions. The result is a take-home pay of $10,737 that is option A is correct.
Explanation:
The student is asking how to calculate the take-home pay for Mr. Rich after deductions from his income. To find the take-home pay, we first add together Mr. Rich's regular pay and overtime pay to get his total earnings. Then, we subtract the deductions to find the amount he takes home.
Regular pay: $9,278
Overtime pay: $2,132
Total earnings before deductions: $9,278 + $2,132 = $11,410
Deductions (taxes and loan): $673
Take-home pay: $11,410 - $673 = $10,737
One December day, two spies decide that they must meet to exchange documents. One is in New York City and the other is in Indianapolis, 700 miles away by train. The spies want to be together for only a brief moment. They consult train schedules and find that there is a stop that will meet their needs.
The Midwest Flyer leaves Indianapolis at midnight and arrives in New York City at 2:00 PM, 14 hours later. The Silver Streak leaves New York City at 2:00 AM and arrives in Indianapolis at noon, 10 hours later. How far from each city do the spies plan to rendezvous, and at what time?
Answer:
6:00
Step-by-step explanation:
a. g(x)=3x^2
b. g(x)=(1/9x)^2
c. g(x)-1/3x^2
d. g(x)(1/3x)2
Answer:
the awnser would be a(g(x)=3x2
30 people visited Paris 13 visited the Eiffel Tower, 16 visited Notre dam and 7 visited neither.
What's the probability that a person chosen at random only visited one of these places
Answer:
total no of people = 30
number of people that visited notre dam = 16
number of people visited eiffel tower = 13
number of people that visited neither = 7
as per the question there the number of people that visited neither = 7/30
number of people that visited only one = ( 13 + 16)/30
= 29/30
this is the answer
plss mark me brainliest
Step-by-step explanation:
Which equation is a correctly written thermochemical equation?
C3H8 (g) + 5O2 (g)→3CO2 (g) + 4H2O (l) , ΔH= −2,220 kJ/mol
Fe (s) + O2 (g)→Fe2O3 (s) , ΔH= −3,926 kJ
NH4Cl→NH4 + + Cl−
2C8H18 + 25O2→16CO2 + 18H2O , ΔH= −5,471 kJ/mol
Correctly written thermochemical equations include gaseous, liquid, or solid state indications as well as the enthalpy change, ΔH. Out of the presented options, the equations for C3H8(g), Fe(s), and 2C8H18 correctly represent thermochemical equations, but NH4Cl does not due to lacking these features.
Explanation:The question is asking which equation is a correctly written thermochemical equation. A thermochemical equation is a balanced stoichiometric chemical equation that includes the enthalpy change, ΔH.
Looking at the given equations, the first is:
C3H8(g) + 5O2(g)→3CO2(g) + 4H2O(l) , ΔH= −2,220 kJ/mol. This is a correct thermochemical equation.
The second equation is:
Fe(s) + O2(g)→Fe2O3(s) , ΔH= −3,926 kJ. This is also a correct thermochemical equation.
The third equation lacks the gaseous, liquid, or solid state indications as well as the ΔH value, therefore it is not a thermochemical equation.
The fourth equation, 2C8H18 + 25O2→16CO2 + 18H2O , ΔH= −5,471 kJ/mol, is definitely an example of a correct thermochemical equation.
Learn more about Thermochemical Equations here:https://brainly.com/question/2874342
#SPJ12
Ms. van Vugt is making brownies. Her recipe calls for 1/2 cup of milk for 12 brownies. She is making 48 brownies. How much milk does she need? (HINT: How many cups are in a pint?) *
Answer: Ms. Van Vugt will need 2 cups of milk or 1 pint of milk to make 48 brownies.
Step-by-step explanation: For this situation, we know for every 12 brownies she will use 1/2 cup of milk. So we can count up for every 12 brownies.
12 brownies = 1/2 cup of milk
24 brownies = 1 cup of milk
36 brownies = 1 1/2 cup of milk
48 brownies = 2 cups of milk
So, Ms. Van Vugt will need 2 cups of milk or 1 pint of milk to make 48 brownies.
Can someone help me???
Answer:
ITS A
Step-by-step explanation:
SLOVE FOR X AND Y GIVEN THAT ABC =DEF
Explain what is important about the sign of the exponent and why it changes the solution.
Solve for y.
6(y+4)=-3(2y-2) +8y
Simplify your answer as much as possible.
y =
Answer:
6(y + 4) = -3(2y - 2) + 8y
6y + 24 = -6y + 6 + 8y
6y + 24 = 2y + 6
Subtract -2y on both sides
4y + 24 = 6
Subtract -24 on both sides
4y = -18
y = - 4.5
Answer:
-9/2 or -4.5
Step-by-step explanation:
Distribution; 6y+24 = -6y+6+8yCombine like terms; 6y+24 = 2y+6Put y on one side; 6y-2y = -24+6Simplify; 4y = -184y/4 = -18/4y= -9/2 or -4.5The exterior walls and roof of a barn are to be painted. The barn is in the shape of a rectangular prism, with an isosceles triangular prism for a roof. Calculate the total area to be painted. PLEASE HELP! I WILL MARK YOU BRAINLIEST!
Given:
The rectangular prism has a length of 25 feet, a width of 10 feet and a height 55 feet.
The triangular prism has a base length of 25 feet, a height of 8 feet, and a prism height of 55 feet.
To find:
The total area to be painted.
Solution:
There are 4 external surfaces for the rectangular prism and 4 external surfaces for the triangular prism.
The rectangular prism has 4 rectangles out which there are 2 sets of similar rectangles.
There are two rectangles with lengths of 25 feet and widths of 10 feet while the other two rectangles have lengths of 55 feet and widths of 10 feet.
The area of a rectangle with a length of 25 feet and a width of 10 feet [tex]= 25(10)= 250[/tex] square ft.
The area of two such rectangles [tex]= 2(250) = 500[/tex] square feet.
The area of a rectangle with a length of 55 feet and a width of 10 feet [tex]= 55(10)= 550[/tex] square feet.
The area of two such rectangles [tex]= 2(550) = 1100[/tex] square feet.
The triangular prism has 2 triangles and 2 rectangles.
The triangles have base lengths of 25 feet and heights of 8 feet while the rectangles have lengths of 55 feet and heights of 14.8 feet.
The area of a triangle with a base length of 25 feet and a height of 8 feet [tex]= \frac{1}{2}(25)(8)= 100[/tex] square feet.
The area of two such triangles [tex]=2(100)= 200[/tex] square feet.
The area of a rectangle with a length of 55 feet and a width of 14.8 feet [tex]= 55(14.8)= 814[/tex] square feet.
The area of two such rectangles [tex]= 2(814) = 1628[/tex] square feet.
The total area to be painted [tex]=500+1100+200+1628 = 3128[/tex] square feet.
So an area of 3128 square feet is to be painted.
An area of 3128 square feet is to be painted.
The rectangular prism has a length of 25 feet, a width of 10 feet and a height 55 feet.
The triangular prism has a base length of 25 feet, a height of 8 feet, and a prism height of 55 feet.
To find:
The total area to be painted.
There are 4 external surfaces for the rectangular prism and 4 external surfaces for the triangular prism.
The rectangular prism has 4 rectangles out which there are 2 sets of similar rectangles.
There are two rectangles with lengths of 25 feet and widths of 10 feet while the other two rectangles have lengths of 55 feet and widths of 10 feet.
The area of a rectangle with a length of 25 feet and a width of 10 feet = 25(10)= 250 square ft.
The area of two such rectangles = 2(250) = 500 square feet.
The area of a rectangle with a length of 55 feet and a width of 10 feet = 55(10)= 550 square feet.
The area of two such rectangles = 2(550) = 1100 square feet.
The triangular prism has 2 triangles and 2 rectangles.
The triangles have base lengths of 25 feet and heights of 8 feet while the rectangles have lengths of 55 feet and heights of 14.8 feet.
The area of a triangle with a base length of 25 feet and a height of 8 feet = (1)/(2)(25)(8)= 100 square feet.
The area of two such triangles =2(100)= 200 square feet.
The area of a rectangle with a length of 55 feet and a width of 14.8 feet = 55(14.8)= 814 square feet.
The area of two such rectangles = 2(814) = 1628 square feet.
The total area to be painted =500+1100+200+1628 = 3128 square feet.
So an area of 3128 square feet is to be painted.
What is the formula for the area A of a circle in terms of the radius r ?
The formula is A =
plzzzzz guys
Answer:
The formula for the area of a circle is:
[tex]\pi r^{2}[/tex]
[tex]\pi =3.14159265359[/tex]
1) Multiply pi by the radius squared
GIVING OUT 28 POINTS WHOEVER ANSWERS!!! A dot plot titled class size going from 10 to 50 in increments of 10. 10 has 1 dot, 20 has 5 dots, 30 has 7 dots, 40 has 0 dots, and 50 has 1 dot. How can Lakota describe the data on the dot plot? Choose all that apply.
A.)spread
B.)gap
C.)peak
D.)color
E.)size of dots
F.)cluster
Answer:
Spread, Gap, Peak, Cluster
Step-by-step explanation:
What solid will this lesson focus on?
triangular prism
regular square pyramid
cone
rectangular solid
Answer:
Regular Square Pyramid
Step-by-step explanation:
I’m doing this question on odyssey ware it’s the title
0.12m/s =_____km/h
0.3g/cm^3=____km/m^3
Answer:
a)0.12m/s=0.432km/h
b)0.3g/cm²=300
Step-by-step explanation:
a)multiply the speed value by 3.6
b)multiply the mass / volume value by 1000
Hope this helps :)
This Question: 1 pt
A baseball is hit so that its height in feet after t seconds is s(t) = - 4t"" + 20t+2.
(a) How high is the baseball after 1 second?
(b) Find the maximum height of the baseball.
Answer with Step-by-step explanation:
We are given that
Height of ball after t seconds is given by
[tex]s(t)=-4t^2+20t+2[/tex]
a.Substitute the value of t=1
[tex]s(1)=-4(1)+20(1)+2=-4+20+2=18 ft[/tex]
b.Differentiate w.r.t x
[tex]s'(t)=-8t+20[/tex]
[tex]s'(t)=0[/tex]
[tex]-8t+20=0[/tex]
[tex]8t=20[/tex]
[tex]t=\frac{20}{8}=2.5[/tex]
Again differentiate w.r.t t
[tex]s''(t)=-8<0[/tex]
Hence, the height is maximum at t=2.5 s
[tex]s(2.5)=-4(2.5)^2+20(2.5)+2=27[/tex]
Maximum height of the baseball=27 ft
Bruce weighs 12 pounds less than three times what Dylan weighs. Write an expression for Bruce's weight in terms of Dylan's weight.
Answer:
3d-12=b
Step-by-step explanation:
Answer:3d − 12.
Step-by-step explanation:
Dylan’s weight is d.
Three times Dylan’s weight is 3d.
Twelve less than three times Dylan’s weight is 3d − 12.
So, the expression for Bruce’s weight in terms of Dylan’s weight is 3d − 12.
Jim rode at average speed of 12 mph for 2 hours. Then, he
walked at average speed of 3 mph for 0.5 hour. What was the
total distance covered by Jim?
miles
Answer:
25.5 miles
Step-by-step explanation:
The distance is equal to speed multiplied by time. When Jim rode at 12 mph for 2 hours, that means her rode for 24 miles(12*2), then he walked at 3 mph for half an hour, that means he walked for 1.5 miles(3*1/2). Add them both together, you get 25.5 miles.
The total distance covered by Jim is 25.5 miles.
Calculating distancesTo find the total distance covered by Jim, we need to add the distances covered while riding and walking.
Distance covered while riding = Speed * Time = 12 mph * 2 hours = 24 milesDistance covered while walking = Speed * Time = 3 mph * 0.5 hours = 1.5 milesTotal distance covered = 24 miles + 1.5 miles = 25.5 miles
Therefore, the total distance covered by Jim is 25.5 miles.
Learn more on distance : https://brainly.com/question/24739297
#SPJ3
Cual es la mitad de 22
Answer:
11
Step-by-step explanation:
22/2=11
Enter the quadratic equation in standard form in the box below. Use the caret
(^) to enter exponents. For example, enter x2 as x^2.
x2 - 4x - 29 = -8
Answer:
So -3 and 7 are the answer
Step-by-step explanation:
nnnnnnbbn
What is the area of the SHADED sector of the circle?
a. 36 pi units2
b. 8 pi units2
c. 48 pi units2
d. 81 pi units2
PLEASE HURRY!! I HAVE LIMITED TIME!! :)
Given:
Given that the radius of the circle is 9 units.
The measure of the angle JHG is 160°
We need to determine the area of the shaded sector of the circle.
Area of the circle:
The area of the circle can be determined using the formula,
[tex]A=(\frac{\theta}{360}) \pi r^2[/tex]
where r is the radius
Substituting r = 9 and [tex]\theta=160[/tex], we get;
[tex]A=(\frac{160}{360}) \pi (9)^2[/tex]
Simplifying, we get;
[tex]A=(\frac{160}{360}) \pi (81)[/tex]
[tex]A=36 \pi[/tex]
Thus, the area of the shaded sector of the circle is 36π units²
Hence, Option a is the correct answer.
I’m not sure what the answer is
Answer:
The population is 300 the sample is the amount of people who responded.
= 300 ⇒300:138
this means sample unsatisfactory
as the sample was less than 50%
Step-by-step explanation:
The population is viewed as 300/570
There are a number of different ways to handle this. One is to target a 100% response rate, although in doing this care has to be taken in how it is achieved to avoid biasing the responses by changing them! By way of a silly example, if I offered everyone who responds to the survey a lifetime’s supply of ice-cream to boost the response rate, and the survey includes questions about future purchases of ice-cream, that may well impact on the answers. Similarly, cajoling employees into completing an engagement survey may have a negative effect on their answers.
Non-response does not always have a negative effect on survey result (there is a large body of research in this area: Curtin, Presser, and Singer 2000 ; Keeter et al. 2000; , and Earl, “The Practice of Social Research”). Anything over 50% is usually sufficient, and over 70% is viewed as a very good response rate. There are a number of reasons for survey non-response:
Awareness (people were not aware of the survey due to communication failure).
Capability (people do not have the knowledge/competence/tools to complete the survey).
Motivation (people are aware and able, but unmotivated/unwilling/refusing).
Today, Isaac needs to walk his dog, water the garden, and feed his fish. DDD is the number of minutes it takes to walk his dog, GGG is the number of minutes it takes to water the garden, and FFF is the number of minutes it takes to feed his fish.
The expression G+(D+F)G+(D+F)G, plus, left parenthesis, D, plus, F, right parenthesis describes the total number of minutes it takes Isaac to do all three tasks. We can also use the expression (G+D)+F(G+D)+Fleft parenthesis, G, plus, D, right parenthesis, plus, F to represent the same quantity.
Match each amount in the situation with the expression that represents it.
For reference:
The dog is an animal, and he needs to go outside to walk.
The garden is a bunch of plants (not an animal), and it is outside.
The fish is an animal, and she lives in a water tank inside.
Situation
Expression
THIS IS FOR KHAN ACADEMY
Answer:
The total Minutes of the Inside tasks.-F (Fish)The total Minutes of the Outside tasks.-G+D (Garden and Dog)The total Minutes of the tasks involving animals.-D+F (Dog and fish)The total Minutes of the tasks not involving animals.-G (GardenStep-by-step explanation:
D is the number of minutes it takes to walk his dog
G is the number of minutes it takes to water the garden
F is the number of minutes it takes to feed his fish.
We are required to match these situations to their respective expressions:
Situation
The total Minutes of the Inside tasks.The total Minutes of the Outside tasks.The total Minutes of the tasks involving animals.The total Minutes of the tasks not involving animals.Expression
D+FG+DGFMatch:
The total Minutes of the Inside tasks.-F (Fish)The total Minutes of the Outside tasks.-G+D (Garden and Dog)The total Minutes of the tasks involving animals.-D+F (Dog and fish)The total Minutes of the tasks not involving animals.-G (Garden)