Answer:
B
Step-by-step explanation:
2/5 + 2/5 +2/5 = 6/15 < 7/15
Annie needs $30 to buy a coat she has saved $12 and plans to work as a baby siter to earn $6 per hour which inequality shows the minimum number of hours, n, that annie should work as a babysitter to earn enough to buy a coat?
a 12 + 6n ≤ 30, so n ≤ 3
b 12 + 6n ≥ 30, so n ≤ 3
c 6n ≥30 + 12, so n ≥ 7
d 6n ≤30 + 12, so n ≤ 7
Answer:
The answer would be B. 12 + 6n is greater than or equal to 30, so n is less than or equal to 3.
explanation:
I'm bad with explaining things, but I'll try my best to explain why this is the right answer.
12 + 6n ≥ 30, so n ≤ 3
let's start with the 12 at the beginning of the inequality, Annie already has $12, so the 12 in the inequality shows the amount of money she already has being added to the $6 per hour of babysitting she needs to do (n).
Now for the + 6n, the plus is there to show that the $12 Annie already has is being added to the 6n. The 6n then represents the $6 Annie makes each hour and the n represents how many hours she needs to babysit in order to get $30. The 6 is being multiplied by the amount of hours she needs to babysit to show how much money Annie would make. Then you add on the $12 she already has.
Annie then needs at least $30, but if she makes more than $30 then she will simply have more money than needed, therefore you use the greater than or equal to sign to show that she can have more money than just $30 after working.
I hope this helps, and sorry if my explanation is hard to understand lol.
please help asap
is x= -3 what is the value of |x-4|-x^2
thank you
Answer:
16
check your math
|(-3)-4|=7
-3^2=-9
7-(-9)=16
welcome <3
Problem: Express the following numbers in standard form:
(i) 0.0000000000085 (ii) 0.00000000000942 (iii) 6020000000000000
(iv) 0.00000000837
(v) 31860000000
Answer:
(i) 8.5 × 10^-12
(ii) 9.42 × 10^-12
(iii) 602 × 10^15
(iv) 8.37 × 10^-9
(v) 3.186 × 10^10
Step-by-step explanation:
(i) 0.0000000000085
= 0.0000000000085 × 10^12/10^12
= 8.5/10^12
= 8.5 × 10^-12
(ii) 0.00000000000942
= 0.00000000000942 × 10^12/10^12
= 9.42/10^12
= 9.42 × 10^-12
(iii) 6020000000000000
= 602 × 10^15
(iv) 0.00000000837
= 0.00000000837 × 10^9/10^9
= 8.37/10^9
= 8.37 × 10^-9
(v) 31860000000
= 3.186 × 10^10
-TheUnknownScientist
Mr. Piper is driving Peter, Roddy, and Scott home from school.
How can he make a fair decision about who rides in the front seat?
Select all of the correct answers.
Answer:
A
Step-by-step explanation:
By using this method, each person has an equal chance of getting to sit in the front seat.
Put each person's name on a separate price of paper in a bag. Randomly draw the winning name.
Roll a number cube, If it lands on 1 or 2, Peter wins. If it lands on 3 or 4, Roddy wins, If it lands on 5 or 6, Scott wins.
What represents a fair decision?
A fair decision is one in which all three studnets have an equal chance of winnning. If each person's name is put in a bag, each person has a 1/3 chance of sitting in the front. If a number cube is rolled, the probability of each person sitting in the front is 1/3.
To learn more about probability, please check: https://brainly.com/question/13234031
PLEASE HELP!!!!!!!!!!!!!!!!! Write the equation of the line perpendicular to y=3/4x+9/4 that passes through the point (-5, 2)
Answer:
y = -4/3x - 6
Step-by-step explanation:
1. Find the slope. Since we know that a line perpendicular to another is it's opposite reciprocal, or the product of the two is equal to -1, we can find the slope. -4/3 times 3/4 is -1, so -4/3 would be the slope of this line.
2. Plug in the point and slope into the slope-point equation. The equation would be y - 2 = -4/3 * (x + 6).
3. Simplify. The simplified equation would be y = -4/3x - 6.
Answer: y = -4/3x - 6
At a farm, four employees harvest 48 pounds of food over a certain number of hours. Each employee works the number of hours shown. (the hours for the employees are)
Employee A: 6 hours
Employee B: 4 hours
Employee C: 6
Employee D: 8 hours
Answer:
A=288, b=192, c=288, d=384.
Step-by-step explanation:
Each hour an employee harvests 48 pounds of food. So I simply multiplyed the hours by the food harvested.
Suppose the size of the tank in question 5 is doubled. Will
the average rate of change in gallons per minute change?
Explain your answer.
Answer:
No, it will not change
Step-by-step explanation:
Because the size of the tank is not a factor that can be used to find the rate of change. The rate of change will continue to be 30 gallons per minute.
The average rate of change of gallons per minute is 30 gallons per minute.
No, the average rate of change of gallons per minute will not change even if the size of the tank is doubled because the size of the tank is not used to find the average rate of change.
What are coordinates in a graph?The coordinates in a graph indicate the location of a point with respect to the x-axis and y-axis.
The coordinates in a graph show the relationship between the information plotted on the given x-axis and y-axis.
We have,
From the graph,
Two coordinates to find the average rate of change in gallons per minute.
(1, 30) and (3, 90).
These coordinates represent a change in the amount of water in the given unit of time.
x-coordinates is the time.
y-coordinate is the amount of water.
Now,
The average rate of change of gallons per minute:
(1, 30) = (a, b) and (3, 90) = (c, d)
= d - b / c - a
= 90 - 30 / 3 - 1
= 60 / 2
= 30
Thus
The average rate of change of gallons per minute is 30 gallons per minute.
No, the average rate of change of gallons per minute will not change even if the size of the tank is doubled because the size of the tank is not used to find the average rate of change.
Learn more about coordinates here:
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Help please will give brainly
Answer:
Its A
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
The amount of money increases by 5 each hour
Solve. 2x(30+23) ≥ 86
Which graph shows the solution set for 2x+3>-9?
Look at the picture
Answer:
it's the last one
Step-by-step explanation:
2x+3>-9
2x>-12
x>-6
Answer:
D
2x+3>-9
Move the constant the the right
2x>-9-3
Calculate
2x> -12
Divide both side
x> -6
(-6,+ 00)Elle placed a bucket under a leaky roof. The bucket was 3/10 full after 2/5 of an hour. How much water is leaking per hour?
Answer:
The amount of water leaking per hour is 3/4 of the bucket volume
Step-by-step explanation:
The given parameters are;
The volume of water in the bucket = 3/10 of the bucket volume
The time duration of the leak = 2/5 hour
Therefore;
The leak rate = Volume/Time
The amount of water leaking per hour = (3/10 of the bucket volume)/(2/5 hour)
The leak rate = The amount of water leaking per hour = 3/4 of the bucket volume/hour.
The amount of water leaking per hour is [tex]\frac{3}{4}[/tex] of the bucket volume.
Given ;
The volume of water in the bucket = [tex]\frac{3}{10}[/tex] of the bucket volume
The time duration of the leak = [tex]\frac{2}{5}[/tex] hour
Therefore;
The leak rate = [tex]\frac{volume }{time}[/tex]
The amount of water leaking per hour = ( [tex]\frac{3}{10}[/tex] 0f the bucket volume)/([tex]\frac{2}{5}[/tex] hour)
= ( [tex]\frac{3}{10} . \frac{5}{2}[/tex] ) volume per hour
The leak rate = The amount of water leaking per hour = 3/4 of the bucket volume per hour.
For more details about volume and rate change click the link given below.
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Graph the inequality x>8
Answer:
Graph it as ○--->
The open circle because the answer is greater than 8 and we are going to the left because it is greater than.
Which relation is also a function?
Calculate 8/9-2/3 giving your answer in its simplest form.
Answer:
(8/9) - (2/3) = (8-6)/9 = 2/9 = 0.22
See attachment for math work and answer.
The ratio of students to adults on a field trip is 8 to 1. Which table correctly shows this ratio for each grade?
Explain why. help please thank you!
Evaluate fourth root of 9 multiplied by square root of 9 over the fourth root of 9 to the power of 5
Answer:
The answer = 1/3 = .3333333....
Step-by-step explanation:
Select all the correct answers.
Alan needs to drive 400 miles to reach Madison. He is driving at a constant speed of 55 miles per hour. The function y = 400 − 55x represents Alan’s distance in miles from Madison in terms of the number of hours he drives. Andrew is also driving at a constant speed to reach Madison. The table represents Andrew’s distance in miles from Madison in terms of the number of hours he drives.
x y
1 323
3 209
Which statements about this situation are true?
PICK MORE THAN ONE ANSWER!!!
I REPEAT PICK MORE THAN ONE ANSWER!!!
Alan is driving at a faster speed.
Andrew is driving at a faster speed.
Alan and Andrew are driving at the same speed.
Alan was farther away from Madison when he started driving.
Andrew was farther away from Madison when he started driving.
Alan and Andrew started the same distance from Madison.
Answer:
Andrew is driving at a faster speed and they both started at the same place.
PLZ PLZ PLZ PLZ PLZ PLZ PLZ HELP!!!!!
Answer:
equal
Step-by-step explanation:
just read
Answer:
i would say all equilateral traingles are acute triangles.
Step-by-step explanation:
Help ASAP please !!!
Answer:
Step-by-step explanation:
1).
What's the measurement of all the missing angles Sum of the angles inside a quadrilateral are 360 Isosceles triangles-ls opp congruent sides are congruent
Answer:
b
Step-by-step explanation:
j
Whats the equation of the line?
Answer: I believe it should be answer B
Step-by-step explanation: the x coordinate pairs with y and vice versa and if it’s positive you subtract is how I remember it.
I am so stuck! :( Pls help me!!! I don't get the problem and I don't know how to solve it
Answer:
[tex]\frac{n^{2}}{2a}[/tex]
Step-by-step explanation:
Just split it up first [tex]\frac{9an^{3}}{18a^{2}n}=\frac{9}{18}\times \frac{a}{a^2} \times\frac{n^3}{n}[/tex] Then 9 divided by 18 can be simplified into the fraction 1/2What can go into [tex]a[/tex] and [tex]a^2[/tex] ? a itself right, so if you divide a by a you get 1, if you divide [tex]a^2[/tex] by a you get aSame as the a fraction, if you divide [tex]n^3[/tex] by n you get [tex]n^2[/tex] [tex]\frac{9an^{3}}{18a^{2}n}=\frac{9}{18}\times \frac{a}{a^2} \times\frac{n^3}{n}=\frac{1}{2}\times \frac{1}{a} \times\frac{n^2}{1}=\frac{n^{2}}{2a}[/tex]Answer:
(n^2)/2a
Step-by-step explanation:
We'll take this in small steps. Don't worry and follow along if you wish :D
Where do we start? Well, first, we notice that all of the numbers/variables (on both the denominator and the numerator) are multiplied by each other. If this case had addition or subtraction in the fraction, the explanation would have differed.
Let's take on a simpler example to show you what I mean. Here's a relatively simpler equation with no pesky variables:
(1 + 3)/4
This equation has to be broken down like this:
1/4 + 3/4
And although we could just do (1 + 3) quickly and divide by 4, consider it if we replace them with numbers instead, or variables in other words:
(x + y)/x
Then, it would work the same way as the previous example:
x/x + y/x
And that would further simplify to (1 + y/x).
But, we're lucky! Because there is no addition or subtraction, we won't have to divide all the numbers that are in the numerator with the number(s) in the denominator. Consider this:
(3*4)/4
We only need to divide 4 by the denominator (which is also four, in this case) and not both 3 and 4 like how we would solve if it had addition or subtraction.
First step! Let's take all of the variables out of this nasty equation we have on our hands to make it simpler:
(9an^3)/(18a^2n)
We would be left with...
9/18
And then we would reduce to leave 1/2. Notice that if we add all the variables back, we would have:
(1an^3)/(2a^2n)
Or (an^3)/(2a^2n)
If we write it out, we'll find this equation a tad bit easier with the large numbers dealt with (although I will admit, it doesn't look that great on the screen—lol)!
Back to business. Here, we need to simplify the variables. Given, we have to remember that variables are just your every-day number (but unknown). Because of that, we get to divide them very much like how we would with regular numbers. Rope in some of our previous lesson about not having to divide all the numbers on the numerator from the denominator from the beginning, too!
(an^3)/(2a^2n)
You can cancel out the variable a^ in this equation. That would leave you with:
(n^3)/(2an)
Try to simplify the rest on your own and use my work to check your answers! if you can't, then no worries. Follow along with me :D
We can also reduce using n. That will leave:
(n^2)/2a
And then you're done! I would recommend more questions like these (if you aren't already doing them) because you'll be using simplifying techniques similar to this equation in the future.
Good luck and keep studying!
Mike wants to put 150 square feet of artificial turf in his front yard. This is the maximum area
of artificial turf allowed by his homeowners association. He wants to have a rectangular area
of turf with length one foot less than 3 times the width. Find the length and width. Round to
the nearest tenth of a foot.
Answer:
Step-by-step explanation:
Area of the rectangular area = Length * width
A = LW ...... 1
If he wants to have a rectangular area of turf with length one foot less than 3 times the width, then
L = 3W - 1 ...... 2
Substitute 2 into 1
A = (2W-1)W
A = 2W^2 - W
Since area = 150sq.ft
150 = 2W^2 - W
2W^2 - W - 150 = 0
Factorize
2W^2 - W - 150 = 0
W = 1±√1+4(300)/2(2)
W = 1±√1201/2(2)
W = 1±34.655/4
W = 35.655/4
W = 8.91375
W = 8.9 (to nearest tenth)
Get the length
L = A/W
L = 150/8.9
L = 16.85
L = 16.6ft
Hence the length is 16.6ft and the width is 8.9ft
15
Which one of the following numbers is not written in scientific notation?
A 0.1 x 103
B) 3.2 x 103
2.1 x 102
D 5 x 102
Answer:
A is the correct answer
Step-by-step explanation:
2a - 7 - 6a = 9
Pls help?
Step-by-step explanation:
2a - 7 - 6a = 9
- 4a - 7 = 9
- 4a = 16
a = -4
What is 4/4 divided by 20 divided by 60 equal
Answer:
The Product is 0.00083333333.
Step-by-step explanation:
Hope this helps! :)
The correct answer for the value of [tex](\dfrac{4}{4})[/tex] ÷ [tex]20[/tex] ÷ [tex]60[/tex] is 0.0008333.
Given expression:
[tex](\dfrac{4}{4})[/tex] ÷ [tex]20[/tex] ÷ [tex]60[/tex]
To solve the expression, follow the order of operations(BODMAS):
Parentheses/Brackets
Exponents/Orders
Multiplication and Division (from left to right)
Addition and Subtraction (from left to right)
In this case;
Divide and perform the operations from left to right:
[tex](\dfrac{4}{4})[/tex]
= 1 (because any number divided by itself is always 1)
[tex]\dfrac{1}{20}[/tex]
= 0.05
[tex]\dfrac{0.05}{60}[/tex]
= 0.0008333... (repeating decimal)
The final result is approximately 0.0008333.
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what is the five number summary for the data set 0,2,2,4,5,5,5,5,7,11
Answer:
The median/middle is 5 and the minimum is 0 and the maximum is 11. The first quartile is 7/5= 1.4 and the second is 4/2 = 2
Step-by-step explanation:
The five number summary for the data set 0,2,2,4,5,5,5,5,7,11 is as minimum value is 0, maximum value is 11, median is 5, first quartile is 2 and second quartile is 5.
What is the five number summary of data set?The five number summary for the data set provides the basic information of a data set. This consist of minimum value, maximum value, median, first quartile, and second quartile.
The provided data set is,
0,2,2,4,5,5,5,5,7,11
The data is arranged in the increasing order. The minimum value in this number is 0 while the maximum number is 11.
As the middle value of the data is 5. Thus, the median of this number is,
[tex]m=5[/tex]
The first quartile is the median in the lower half of the data. In this data lower half consist 0,2,2,4,5 which has the median or first quartile as,
[tex]Q_1=2[/tex]
Similarly, the second quartile is,
[tex]Q_1=5[/tex]
Thus, the five number summary for the data set 0,2,2,4,5,5,5,5,7,11 is as minimum value is 0, maximum value is 11, median is 5, first quartile is 2 and second quartile is 5.
Learn more about the five number summary of data set here:
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Please help it's four am and I really hate math
Answer:
A
Step-by-step explanation:
number books = n
2xn / 15
3. Roger runs 8 miles per hour. He ran for h
hours to run 6 miles.
Answer:
h=3/4
Step-by-step explanation:
6/8 can be simplified to 3/4.
Hope I helped! Please mark Brainliest!
Susan runs 22 km in 2 hours and 45 minutes. What is her average speed in km an hour? Explain your answer please!
Answer:
22km= 2 hours and 45 mins
To find speed: Distance/Time
22/2.75 = 8
Your answer 8km/h
Step-by-step explanation: When finding speed, the formula is always distance divided by time. 45 minutes of 60 minutes is 3/4 of an hour, and 3/4 is 0.75 is decimal. So you add the 2 + .75, and you'll get 2.75. After you convert the time, you begin dividing and you'll get your answer!
