Answer and explanation:
The data we get from counting how many people entering a building in one minute is the sample of the population size. We do this since it would be tedious or not feasible to stand and count one by one how many people enter the building and so we do a good estimate with our one minute sample
Let's assume in one minute, 15 people enter the building and it takes one hour for everyone to enter the building
Population size would be 15*60 minutes= 900 people
What is the value of x in the equation 5.5x = 17.6?
3.2
12.1
23.1
96.8
Answer:
3.2
Step-by-step explanation:
rephrase question to isolate the variable x
can do this is by dividing both sides by 5.5
5.5 ÷ 5.5 = 1 so:
x = 17.6 ÷ 5.5
i need to write the inequalities helpp!!!
Answer:
1. f > 40 miles/gallon
2. t < 35 degrees
Answer:
For part one the vehicle cannot have less than 40mpg so the equality would be
[tex]f\geq 40mpg[/tex] because the mpg must be greater than or equal to 40mpg.
For part two the temp must be LESS than 35 not including 35.
so we would show that with [tex]t<35F[/tex]
Please help and put it in a fraction
Answer:
1/2
Step-by-step explanation:
sorry it took so long.
Answer:
H25
Step-by-step explanation:
point slope form of y=10x-82
y + 82 = 10x is the answer.
Answer:
y+72 = 10(x-1)
Step-by-step explanation:
I don't really know why this would be useful for solving a problem; please tell me in the comments of my answer.
Anyway, I would pick a random point that would satisfy this equation. One example would be (1, -72)
Now just plug those 2 numbers into the equation:
y+72 = 10(x-1)
how is this pattern changing to get from one term to the next 55,49,43,37,31
Answer:
its changing by 6 if you look the get subtracted or added by six to mae those numbers
Step-by-step explanation:
31 + 6= 37
37 + 6= 43
43 + 6= 49
49 + 6= 55
Please help!!
Simplify. √4x/y^3
D.2y square root x/square root y
The temperature rose 2°C each hour for 6 h. Use integers to find the total change in
temperature
12·C
Step-by-step explanation:
2 * 6 = 12·C
In the table below, x represents miles traveled and y represents the cost to travel by train.
Miles, x
Cost, y
2
8.50
5
15.25
8
22.00
12
31.00
Which linear equation represents the situation?
Answer:
A: y= 2x+8.50
Step-by-step explanation:
Please tell me if I am wrong.
Answer:
It is B
Step-by-step explanation:
I was doing the test and reviewing it and it was right
The money used in Mexico is called the Peso. The exchange rate is $10 for 222 pesos. How many pesos will you receive if you exchange $25?
Answer:
555
Step-by-step explanation:
two ways.
25/10=2.5 so 222x2.5=555
or
(222/10)x25=555
Answer:
555 pesos
Explain:
222+222 (20$)
222:2= 111
444+111= 555 pesos
PLEASE HELP ASAP 15 POINTS
Eli wants to combine 0.5 gallons of a 10% acid solution with a 35% solution to make a 15% acetic acid solution. He needs to determine how many gallons of 35% solution are needed.
Eli decides to let v represent the volume of the 35% solution and makes a table to help solve the problem.
Help Eli by completing the table.
Answer:
Here you go :)
Step-by-step explanation:
0.0125 gallons of 35% solution is needed.
Given that,
Eli wants to combine 0.5 gallons of a 10% acid solution with a 35% solution to make a 15% acetic acid solution.
Eli decides to let v represent the volume of the 35% solution.
We have to find,
How many gallons of 35% solution is needed?
According to the question,
Eli decides to let v represent the volume of the 35% solution.
And 0.5 gallons of 10% acid solution,
the volume of the 15% acid solution is (v +0.5).
Therefore,
0.5 gallons of a 10% acid solution with a 35% solution to make a 15% acetic acid solution.
[tex]\rm = 0.5 \times \dfrac{10}{100} + v \times \dfrac{35}{100} = (v+0.5) \times \dfrac{15}{100}\\\\= 0.5 \times 0.01 + v \times 0.35 = (v+0.5) \times 0.15\\\\= 0.05 + 0.35v = 0.15v + 0.075\\\\= 0.35v - 0.15v = 0.075 -0.05\\\\= 0.20v = 0.025\\\\v = \dfrac{0.025}{0.20}\\\\v = 0.0125[/tex]
Hence, 0.0125 gallons of 35% solution is needed.
For more details refer to the link given below.
https://brainly.com/question/17177510
this is due soon helppp
Answer:
-38y-21z
Step-by-step explanation:
-2(3y+z)-7z-4(3z+8y) is the same as
-6y-2z-7z-12z-32y which is the same as
-38y-21z Which is in simplest form
Answer:
-21z-38y
Step-by-step explanation:
hope it helps :)
Edmundo is going shopping. He starts out with $36 and buys three items. He buys a
book for $3, a shirt for $12 and a sandwich for $5. He calculates the money he now has
using the formula: $36-($3+$12+$5) Which of the following expressions is also correct?
Answer:
my best guess is A but im not 100% sure
Step-by-step explanation:
anyone know what these two questions are? the subject is scientific notation
Answer:
1. The negative sign on an exponent means the reciprocal. A negative exponent tells how many times to divide a base number.
2. A positive tells how many times to multiply a base number.
could you also give me a brainliest if I am correct.
thanks!
You spend half of your money on a movie ticket. Then you spend half of what you
have left to buy a large popcom. Then you spend half of what remains to buy a small
drink.
Which expression equals the fraction of money you have left?
Answer:
1/2-1/2-1/2
Step-by-step explanation:
Thank me later
A fish is 3 feet below the surface of a lake. If its position can be recorded as −3 feet, what would the position of 0 represent
Answer:
On the surface of the lake
Step-by-step explanation:
A position of 0 represent that the object is on the surface of the lake. Negative 3 represents 3 feet below the surface of the lake.
Hope this helps.
Please mark me brainliest
Answer: you can mark the other guy as brainliest now
Step-by-step explanation:
three times the difference of a number and four is equal to 5
-132 = 11p
I need help please
Answer:
-12
Step-by-step explanation:
-132/11= -12
Answer: p = -12
Step-by-step explanation:
divide by 11 on both sides to isolate p, giving you -12
Ron is tilling a countertop. He needs to place 54 square tiles in each of 8 rows to cover the counter. He wants to randomly place 8 groups of 4 tiles each and have the rest of the tiles to be white. How many white tiles will Ron need?
Answer:
176
Step-by-step explanation:
54×8=432
8×4=32
32×8=256
432-256=176
Analyze the following equation.
m/16 = 19
Which math step will most efficiently solve the equation?
Multiply both sides of the equation by 16.
Divide both sides of the equation by 16.
Add 16 to both sides of the equation.
Subtract 16 from both sides of the equation.
Answer:
multiply by 16
Step-by-step explanation:
you have to single out the variable m so you would do the opposite
to dividing which is multiplying
How do you solve this?
Answer:
so for one, just put a line horizontal to line 1
part two I'm assuming you do the same as p since it's not asking you to make it perpendicular to line 1.
part three, create going through line 1 (vertical)
part four constructs the same triangle, but just move the points a little so that way it's not overlapping.
Step-by-step explanation:
parallel means not touching
perpendicular means crossing each other paths.
NEED HELP! ASAP! 50 POINTS!
(0,11) (3,50) x is measured in gallons and y is measured in miles. Find the rate of change in y relative to x for the ordered pairs. Include unit of measurement in your answer.
Answer:
[tex]y=13\text{ miles per gallon}[/tex]
Step-by-step explanation:
We have the two points: (0, 11) and (3, 50).
And we want to find the rate of change in y relative to x, where x is the gallons and y is the miles.
In simple terms, we want to find the slope between the two points.
So, let's use the slope formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Let (0, 11) be (x₁, y₁) and let (3, 50) be (x₂, y₂). Substitute. Let's also put "miles" in the numerator with the Ys and "gallons" in the denominator with the Xs. This yields:
[tex]y=\frac{50-11\text{ miles}}{3-0\text{ gallons}}[/tex]
Subtract and reduce:
[tex]y=39\text{ miles}/3\text{ gallons}=13\text{ miles per gallon}[/tex]
And we're done!
The ratio between the number of red, green and blue marbles in a box is 2:6:5. How many marbles are in the box if there are 20 fewer red marbles than green marbles?
Answer:
65 marbles
Step-by-step explanation:
2:6 = x-20:x using the information in the problem
2x = 6x-120, and therefore x = 30. 30 is the number of green marbles.
We can find that the multiplier is 30/6 = 5. So there will be 5*2 = 10 red marbles. 5*5 = 25 blue marbles.
30+10+25 = 65 marbles total.
can someone please help me with this question
Absolute value of -23/7
Answer:
3.28
Step-by-step explanation:
Which is used to determine if a relation is a function
1. 3D line test
2.diagonal line test
3.horizontal line test
4.vertical line test
Answer:
i picked d because
Step-by-step explanation:
The vertical line test can be used to determine whether a graph represents a function. If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function because a function has only one output value for each input value.
In 2015 there were 759 laptops at lightning high school starting a 2016 the school box 75 more laptops at the end of each year the function t(x) equals 75X +759 can be used to determine the total number of laptops at the school X years after 2015 what is the projected total number of laptops at lightning high school at the end of 2020
Answer:
Step-by-step explanation:
Given the following :
Number of laptops in 2015 = 759
t(x) = 75x + 759 ; model to determine number of laptops at the school. X years after 2015.
Number of laptops in the school in 2020:
Problem number 26 of the Rhind Papyrus says: Find a quantity such that when it is added to StartFraction 1 Over 4 EndFraction of itself the result is a 15. The modern day equation that models this problem is x plus StartFraction 1 over 4 EndFraction x equals 15.. What is the solution to the equation? x = 10 x = 12 x = 15 x = 30
Answer:
The quantity is 12
Step-by-step explanation:
Here, we want to find the solution to the equation.
Let the quantity we are looking for be x;
According to the question;
The quantity plus a quarter of the quantity = 15
x + 1/4(x) = 15
x + x/4 = 15
Multiply through by 4
4x + (x/4)*4 = 15 * 4
4x + x = 60
5x = 60
x = 60/5
x = 12
Answer:
top one is correct, it is 12!
Step-by-step explanation:
its b on edg. 2020
Help me! with all my questiion and i'll give yall 100 points for each one A shoe store marks up its merchandise by 8%. What was the selling price of a pair of shoes whose wholesale price is $24.00?
Answer:
$ 25.92
Step-by-step explanation:
Hi there !
100 % .............. $ 24
108 % ................$ x
x = 108×24/100
= 2592/100
= $ 25.92
Good luck !
Answer:
$25.92Step-by-step explanation:
given:
A shoe store marks up its merchandise by 8%.
find:
What was the selling price of a pair of shoes whose wholesale price is $24.00?
solution:
selling price = wholesale price x (1 + percentage)
= $24 x ( 1 + 0.08)
= $25.92
a function is a relation if and only if the x values do not repeat in a given set. true or false?
Answer:
true
Step-by-step explanation:
when the domain (x-values)is not repeated in the relation