Answer: This is approximately 3.14
how much water should be added to 5 gallons of 50% acid solution to get a 20% solution?
Answer:
7.5 gallons
Step-by-step explanation:
2.5/5+x=0.2
This question is based on the concept of solving an equation. Therefore, 7.5 gallons of water would be added to 5 gallons of 50% acid solution to get a 20% solution.
Given:
5 gallons of 50% acid solution to get a 20% solution.
According to question,
Let it be x gallons of water should be added to 5 gallons of 50% acid solution to get a 20% solution.
Now, forming the equation, we get,
0.50 ( 5 ) = 0.20 ( x + 5 )
Simplifying the equation.
We get,
2.5 = 0.2x + 1
1.5 = 0.2 x
x = 7.5
Therefore, 7.5 gallons of water would be added to 5 gallons of 50% acid solution to get a 20% solution.
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Which of the following is true? (1 point)
|−4| < 3
|−4| < |3|
|−3| < −4
|−3| < |−4|
whoever is smart enough gets brainliest >:))
Rafi had a board that was 15 1/2 feet long. He cut three pieces off the board that are each 3 7/8 feet long. How much of the board is left?
Answer:
Step-by-step explanation:
To answer this question, first we need to figure out how much of the board Rafi cut off.
To do this, we need to multiply the length of each piece by the number of pieces he cut off.
3 7/8 = 3.875
3.875 * 3 = 11.625
Now, because we knew Rafi cut off 11.625 feet off of the board, we just need to subtract this length from the length of the entire board to find the remaining length.
15 1/2 = 15.5
15.5 - 11.625 = 3.875
There is 3.875 feet or 3 7/8 of the board left.
HELPPPPPP ASAP PLSPLSPLSPLSPLSPLSPLS
Half of the sum of a number n and 14 equals 5. What is the number n ?
n = 24
n = 12
n=−2
n=−4
Answer:
n = -4
Step-by-step explanation:
n+14/2 = 5
x2 x2
n + 14 = 10
-14 -14
n = -4
PLEAS HELP ME I WILL GIVE 30 POINTS
Answer:
answer should be 0.166...
Step-by-step explanation:
i dont think this will help but i hope it does...
Given: x + 5 ≥ 10. Choose the graph of the solution set.
Answer:
We'll want to end this one with x ≥ another value.
Step-by-step explanation:
So, subtract 5 from both sides.
x+5≥10
-5 -5
x≥5
So, x must be greater than or equal to 5.
Solve two and one-third times two and three fourths (Will give brainliest)
A.four and three twelfths
B.six and five twelfths
C.seven and five twelfths
D. eight and three twelfths
2+1+1+1= 6 and 2+3= 5
3×4= 12
(B) six and five twelfths
What is the range of possible sizes for side x?
Answer:
dunno hahhhaha
Step-by-step explanation:
What is the range of possible sizes for side x
Answer:
...
Step-by-step explanation:
n is m% of what number?
Answer:
n
m
100
Step-by-step explanation:
n/m/100
n is divided by m%
m%=m/100
SImplify:
(2m)^5
Please help if possible :)
reread lines 9-18. underline the parts of a bats body that humans also have. Study the image of the bat. How does showing body parts similar to a humans help you better understand a bats body? Support your answer with explicit textual evidence.
Answer:1/2 of an answer is zero answer.
Step-by-step explanation:
When mom is doing cleaning on her own it takes 2 hours. When dad does cleaning, it takes 4 hours. How long will it take if both of them work together?
Select the expressions that are equivalent to 9d+4d.
Answer:
The first one, second one, and the last one. not the third one because 9d+3d=12d not 13d
Step-by-step explanation:
99 + 81 = 9(11 help eeeeeeeeeeeeeeee
Answer:
180?
Step-by-step explanation:
N'(-10,-15) is the image of N after a dilation with a scale factor of 5/4, centered at the origin. What are the coordinates of N?
When the point N is dilated, the coordinate of N changes to N'
The coordinate of point N is (8,12)
How to determine the coordinate of NThe given parameters are:
N' = (10,15)
k = 5/4
To calculate the coordinate of N, we make use of:
N * k = N'
So, we have:
N * 5/4 = (10,15)
Multiply both sides by 4
N * 5 = (40,60)
Divide both sides by 5
N = (8,12)
Hence, the coordinate of point N is (8,12)
Read more about dilation at:
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Which expression is equivalent to this expression? 3/4(4h – 6) A. 3h – 9/2 B. 4h + 9/2 C. 3h – 6 D. 4h + 6
Answer:
A. 3h – 9/2 B.
Step-by-step explanation:
Marissa is biking with friends. Their distance traveled can be determined by the equation D = 13h, where D is the distance, in miles, and h is the number of hours spent biking. Identify the constant of proportionality.
Answer:
The 13 would be the constant.
Step-by-step explanation:
HELP!!! This question has me stumped
Answer:
21/12
1.75
this is the answer
hope it helps
Answer:
1.75
Step-by-step explanation:
hope it helps
Who is in the game show?
Answer:
i Am bro
Step-by-step explanation:
A man is climbing down from 100 feet high descending 30 feet per minute. What equation is right?
1. y=100+30x
2. y=100x+30
3. y=100x-30
4. y=100-30x
Answer:
D. y=100-30x
Step-by-step explanation:
Every fpm (Feet Per Minute), the man is descending 30 feet
x = feet per minute
y = total amount
Amelia has 100$ in her savings account and plans on solving 20$ per week. Which equation is right?
1. y= 20x+100
2. y= 100x + 20
3. y=100x
4. y=20x
Answer: I think it is number 1. y=20x+100
The eighth-grade class is planning a trip to Washington, D.C. this spring. They need a minimum of 75 people to attend in order to reserve buses. If one-third of the 8th-grade class plus 17 parent chaperones have signed up and this is enough to satisfy the requirement, how many students must be in the 8th-grade class?
X - how many students must be in the 8th-grade class
Answer:
There needs to be 174 Students in the 8th grade class.
Step-by-step explanation:
173(1/3) is 58
58+17=75
1) Answer two questions from system A and B
System A=
8x-3y=0
2x+7y=3
System B=
8x-3y=0
8x+28y=12
A. Replace one equation with a multiple of itself
B. Replace one equation with a multiple of the other equation
C. Replace one equation with itself where the same quantity is added to both sides
D. Replace one equation with itself where a quantity is added to only one side
2) Based on the previous answer, are the systems equivalent? In other words, do they have the same solution?
A. Yes
B. NO
Answer:
ITS GONNAAAA BE A I DID THIS LAST YEAR
Step-by-step explanation:
What is the distance between the points? Round to the nearest tenth if necessary.
A. 6.7
B. 7.1
C. 3.0
D. 9.0
Answer:
Step-by-step explanation:
Write an equation in slope-intercept form for the line with slope -1/4 and -7 y-intercept. NO LINKS.
Answer: [tex]y = -\frac{1}{4}x - 7[/tex]
That equation is in slope intercept form y = mx+b
m = -1/4 is the slope
b = -7 is the y intercept
Does anyone know this cause I'm kinda confused
A speed skater completes a 500 meter race in 40 seconds. A cheetah runs 260 meters in 10 seconds.How do their speeds compare
Answer:
25:26
Step-by-step explanation:
You mean the ratio?
Let's simplify the speed skater first. 500 meter in 40 second to x meter in 1 second. 500/40=12.5 meters per seconds
Cheetah:260/10=26 meters per seconds
Let's make this into a integer
12.5*2=25
25:26
:)
Mallory puts $1.00 in a jar. The following week, she puts 2 times that original amount in the jar. For each of the next six weeks, Mallory continues to double the amout of money she places in her savings jar each week.
Determine if the relationship is linear or nonlinear. Explain your choice using examples with ordered pairs. (week, amount)
We want to see if the relationship between the number of weeks and the money put in the jar is linear or not, we will see that this is not a linear equation (it is exponential).
So a linear relation is something like:
y = a*x + b
Note that for any value of x, an increase of 1 unit gives:
y = a*(x+ 1) + b = (a*x + b) + a
So for increases of 1 unit in the x-value, we have increases of "a" units on the y-value.
In the given situation we have:
In week 1 she puts $1.00 in the jar.In week 2 she puts $2.00 in the jar (now the jar has $3.00 in it)In week 3 she puts $4.00 in the jar (now the jar has $7.00 on it)In week 4 she puts $8.00 in the jar (now the jar has $15.00 on it)and so on.
Writing that as points we have:
(1, $1)
(2, $3)
(3, $7)
(4, $15)
Notice that for equal increases in the x-value, (increases of 1 unit) we don't equal increases in the y-value (first increases by $2, then by $4, etc...) So this is not a linear equation, this is actually exponential.
If you want to learn more, you can read:
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The relationship of the ordered pair that represents Mallory savings is a nonlinear relationship.
Let x represents the number of weeks, and y represents the amount put in the jar, each week.
So, we have the following highlights for 6 weeks.
Week 1: (1, 1)Week 2: (2,2)Week 3: (3,4)Week 4: (4,8)Week 5: (5,16)Week 6: (6,32)The ordered pairs can then be represented as:
[tex](x,y) = (1,1)(2,2)(3,4)(4,8)(5,16)(6,32)[/tex]
As the x values increase, the y values increase too, but the y values do not increase at a constant rate.
This means that the relationship is not linear; it is an exponential relationship.
Hence, the relationship is a nonlinear relationship.
Read more about linear relationships at:
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HELP! PLEASE!
• At store A, 3 pounds of apples cost $12.
• At store B, the cost is given by y = 2x where y is the cost in dollars and x is the number of pounds of apples.
• The cost of apples at store C is shown in the graph.
(don't worry about the graph I know how to do this one)
Answer the questions to find out which store's apples are the least expensive.
2. What is the unit price of apples at store B? How did you use the equation to find the unit price? (2 points)
Answer:
The unit price is the cost per unit of an item or the cost/price for each item.
1) 4$ per pound. By simplifying the proportion (constant ratio) between the cost, and the pounds of apples. 3 pounds of apples cost 12$ → 3/3 pounds of apples cost 12/3$ → 4 dollars for every pound.
2) 2$ per pound. By evaluating the rate of change (change in the y over x or dependent variable over independent) in the equation: y = 2x. y is the cost in dollars, and x is the pounds of apples. So there are 2 pounds (weight) of apples for every dollar.
3) 3$ per pound. Given a graph with a y scaled by 3, and an x scaled by 1 with a graph y = x or 1 unit up for every unit right. This must be equivalent to y = 3x. Where y is labeled as the cost in dollars, and x as the weight in pounds. So there are 3 dollars for every pound of apples.
4) Store B. Because 2 is less than 3 which is less than 4.