Answer:
x=19/4
Step-by-step explanation:
The product of 5 and a number x is 1/4
How many gallons of pure water should be evaporated from 160 gallons of a solution containing 12% salt
so that the remaining solution contains 20% salt?
What are you being asked to find in this problem?
O gallons of pure water
gallons of 12% salt solution
gallons of 20% salt solution
what is the original amount of solution in gallons? a=
Answer:
66 gallons
Step-by-step explanation:
Given that initially 160 gallons of a solution containing 12% salt.
So, the initial amount of salt = 12% of 160 = 12/100 x 160 = 19.2 gallons.
Let x gallons of water get evaporated so that the remaining solution contains 20% salt.
The remaining amount of solution = 160-x gallons.
As the initial amount of salt is still in the solution which is equal to 20% of the remaining solution, so
19.2 = 20% of (160-x)
[tex]\Rightarrow 19.2 = \frac {20}{100}\times (160-x) \\\\\Rightarrow 19.2 = \frac {1}{5}\times (160-x) \\\\\Rightarrow 19.2 \times 5= 160-x \\\\\Rightarrow 96= 160-x \\\\\Rightarrow x= 160-96 \\\\[/tex]
[tex]\Rightarrow x= 66[/tex] gallons
Hence, 66 gallons of water must be evaporated to get a 20% salt solution.
Answer:
its A, "gallons of pure water"
Step-by-step explanation: just did it on edg and got it right
Boris is going for a walk. He takes 4 hours to walk 6.4 miles. What is his speed?
Answer:
1.6 mph
Step-by-step explanation:
I did the math
please helppppp will give you brainliest
Answer:9/4
Step-by-step explanation: you can write this in algebra format. It becomes -3x+10=5x-8. From there, if you know simple algebra, it is very easy, and therefore x=9/4
Simplify -2√-45 please
Answer:
l-4l+l-3l??
Step-by-step explanation:
Answer:
[tex]-6\sqrt{5i}[/tex]
Step-by-step explanation:
[tex]\sqrt{-45} =3\sqrt{5}i[/tex]
[tex]-2[/tex] * [tex]3\sqrt{5i}[/tex]
= [tex]-6\sqrt{5i}[/tex]
12 IF APOR is similar to AXYZ, which of the following statements must be true?
Answer:
F
Step-by-step explanation:
There's no Q in APOR or AXYZ
Never True
Sometimes True
Always True (Infinite)
3+x=x+3
Answer:
Always True (infinite)
Step-by-step explanation:
If you try and isolate the x variable... you will end up with the equation 0 = 0
Any time you end up with the equation 0 = 0, there are an infinite number of solutions.
A television is measured by its diagonal. If the height of a 70 inch television is 42 inches, what is the width?
Use the Pythagorean theorem:
70^2 = 42^2 + width^2
4900 = 1764 + width ^2
Subtract 1764 from both sides
3136 = width^2
Take the square root of both sides
Width = 56 inches
Describe a situation in which opposite quantities combine to make 0.
Hello!
Answer: A real life example would be if you would add 100 dollars in a bank account and then, subtract the 100 dollars from that account.
The equation used would be 100 + (-100) or in a simpler version 100 - 100 (They both mean the same thing!)
Hope this helps! :)))
A chorus teacher is arranging students on bleachers for a performance. The 1st row of the bleachers has 10 students, the 2nd row has 14 students, the 3rd row has 18
students, and the 4th row has 22 students.
Assuming the trend continues, how many students will be on the 6th row of the bleachers?
Assuming the trend continues, there will be 30 students on the 6th row of the bleachers.
According to the question,
We have the following details:
Number of students in 1st row = 10
Number of students in 2nd row = 14
Number of students in 3rd row = 18
Number of students in 4th row = 22
Now, if we carefully observe the arrangement made by the chorus teacher, we will observe that the arrangement has a pattern.
It is to be noted that with each row 4 students are increasing.
For example, in 2nd row the number of students is 14 (4 more than the previous row), in 3rd row the number of students is 18 (4 more than the previous row), etc.
Now, we have to find the number of students in 6th row. So, first we need to find the number of students in 5th row.
Number of students in 5th row = number of students in 4th row + 4
Number of students in 5th row = 22+4
Number of students in 5th row = 26
Now,
Number of students in 6th row = number of students in 5th row + 4
Number of students in 6th row = 26+4
Number of students in 6th row = 30
Hence, there are 30 students on the 6th row of the bleachers.
To know more about row here
https://brainly.com/question/27917476
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pls help jdjakdhdjks
Answer:
5
Step-by-step explanation:
The value of "b" is the y-intercept. The point is (3,5). 5 is the y intercept so bb is equal to 5.
Find the value of c that makes x^2+20x+c a perfect square trinomial. And then write expression as the square of a binomial.
The value of the variable 'c' is 10. Then the perfect square trinomial is (x + 10)².
What is a perfect square trinomial?A perfect square trinomial formulation can be created by taking the binomial equation's squared. If and then only if a trinomial satisfying the criterion b² = 4ac has the form ax² + bx + c, it is indeed a perfect square.
The trinomial is given below.
⇒ x² + 20x + c
The value of 'c' must be equal to half of the square of the coefficient of x. Then we have
c = [1/2 × (20)]²
c = (10)²
c = 100
Then the perfect square trinomial is written as,
x² + 20x + 100 = (x + 10)²
The value of the variable 'c' is 10. Then the perfect square trinomial is (x + 10)².
More about the perfect square trinomial link is given below.
https://brainly.com/question/16615974
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What is the equation of the line that best fits the given data? A graph has points (1, 7), (1, 6), (2, 5), (2.5, 5), (3, 3), (4, 1). a. y = negative 5 x + 11 c. y = 3 x + 10 b. y = negative one-third x + 10 d. y = negative 2 x +
Answer:
D
Step-by-step explanation:
this is correct on edge
Answer:
D on edge
Step-by-step explanation:
ur welcome
Write a paragraph with at least four reasons explaining why parental controls are bad for kids.
1.your child will become a nervous person and develop anxiety being over controlling will put their mind in a small cage in which they can barely move
2.the choice to use parental controls undermines the trust in your relationship with your child and it reduces your child's opportunity to make smart choices and to take responsibility for the actions they choose
3. your child will most likely reveal and still find ways to look at things you have blocked rebelling against the world isn't the same as rebelling against your parents rebelling against the system isn't the same as rebelling against household rules children need a certain level of Freedom if you try to control every aspect of their lives they'll reclaim their autonomy more and more forcefully and probably Less Reasonable
4.you'll discourage their creativity if you constantly control what your child doesn't turn them into your Shadow they'll probably be less created as a result
A golfer hit a ball 230 m from the tee to the
green. The ball traveled south and landed on the
green in 4 seconds. What was the ball's speed?
Answer:
The ball's speed is 57.5 m/s
Step-by-step explanation:
Given;
distance between the tee and the green, d = 230 m
time taken for the ball to travel from the tee to the green, t = 4 seconds
The speed of the ball is given as;
speed = total distance traveled / total time taken
speed = 230 m / 4 s
speed = 57.5 m/s
Therefore, the ball's speed is 57.5 m/s
I don’t know the answer to this can some one help
Answer:
A) x=8 and angle ABC=115 degrees
Step-by-step explanation:
the lines are parallel, meaning the angles are congruent.
you can set up the equation (15x-5)=(10x+35) and simplify.
1. separate variable by subtracting 10x on both sides to get (5x-5)=(35)
2. add 5 on both sides to get 5x=40
3. divide both sides by 5 to get x=8
4. plug x=8 into original function (10x+35) to get (10(8)+35) which equals 115 degrees
PLEASE HELP ASAP WILL GIVE BRAINLIEST
if y=12 when x=6/7, find x when y=16
Answer:
y = 12 when x = 6/7.
Unless you give a formula (function, or equation) that specifies their relationship, one cannot find x when y equals something else.
Step-by-step explanation:
Click on the measure of the angle.
Answer:
Wow that's hard to look at. But, when zooming in, we can see that the arrow is closer to 116 degrees, so that is the answer.
Step-by-step explanation:
Notice that the angle/arrows is opening up from right to left, so it will be greater than 90 degrees. The arrow is a little bit more than 115 degrees, so it has to be 116 degrees.
#teamtrees #WAP (Water And Plant)
PLEASE HELP HURRY
4+ 3x + 12 - 1/2x - 10
1. HOW MANY TERMS?
2. WHAT ARE THE LIKE TERMS?
Answer:
5 like terms
4, -10, and 12 are like terms
3x and -1/2x are like terms
In parallelogram LMNO, LM = 4.12, MN = 4, LN = 5, and OM = 6.4. Diagonals and intersect at point R. What is the length of ? A. 2 B. 2.06 C. 2.5 D. 3.2 E. 12.8
Answer:
the answer is 3.2
Step-by-step explanation:
Answer:
3.2
Step-by-step explanation:
HELP PLEASE ILL GIVE BRAINLIEST!!!!!!!!!
Answer:
the first questions answer is yes the seconds is no
HAVE A NICE DAY!!!
2 1/7 + 3/7 (3x−5 )=−4
Answer:
-28/9
Step-by-step explanation:
2 1/7= 15/7
3/7* 3= 9/7
3/7*5= 15/7
15/7 + 9/7x - 15/7=-4
9/7x=-4
x=-28/9
What value of x makes the horizontal parts of the letter Z parallel?
Answer:
20 degrees
Step-by-step explanation:
in order for them to be parallel, the alternate interior angles must be congruent
x+20=2x
therefore x=20
The sum of two numbers is 22, and their difference is 12. What are the numbers?
Answer:
17,5
Step-by-step explanation:
In 2003, the population of an African country was about 22.5 million people, which is 2 million more than 5 times the population 1950 Enter and solve an equation to find the approximate populationp millions) in 1950. An equation The approximate population in 1950 was people.
Answer:
Population in 1950 was 4,100,000
Step-by-step explanation:
Equation: 5x + 2,000,000 = 22,500,000
Subtract 2,000,000 from each side: 5x = 20,500,000
Divide each side by 5: x = 4,100,000
I hope this helps, please mark Brainliest, thank you!
what's 7 berries are 5 less than twice the number of berries into an equation
Answer:
2
Step-by-step explanation:
Im pretty sure its 2 bc 5-7=2
i hope im right
PLEASE HELP 30 points
Answer:
1) Infinitely many solutions.
2) No real solutions.
3) (-1, 2)
Step-by-step explanation:
The solutions of a system of linear equations is whenever the two lines intersect.
However, if the two lines never intersect (they are parallel), then there are no solutions.
And if the two lines are the same line, then there are infinitely many solutions.
First Graph:
The two lines are exactly the same.
Hence, there are infinitely many solutions.
Second Graph:
The two lines are parallel. They will never intersect each other.
Therefore, there are no real solutions.
Third Graph:
The two lines intersect at the point (-1, 2).
Hence, there is only one solution and it is (-1, 2).
Opposite sides are supplementary? True or False ?
Answer:
It's true!
Step-by-step explanation:
I hope I helped!
Answer:
False because they are congruent
Step-by-step explanation:
I WILL GIVE YOU A LOT OF POINTS 10 PLUS A BRAINLIEST.
USE THE ABSOLUTE VALUE TO FIND THE DISTANCE BETWEEN THE GIVEN PAIRS OF NUMBERS ON A NUMBER LINE NUMBERS A. 156 AND 235 B. -40 AND 83 C. -62 AND -145 D. 56 AND - 89
Answer:
A. 79
B. 123
C. 63
D. 145
Step-by-step explanation:
A. 156 & 235
235 - 156 = 79
Distance is 79
B. -40 & 83
|-40| = 40 + 83
= 123
Distance is 123
C. -62 & -145
|-125| - |-62|
= 125 - 62
= 63
Distance is 63
D. 56 & -89
|-89| = 89 + 56
= 145
Distance is 145
Answer:
A. 79
B. 123
C. 63
D. 145
Step-by-step explanation:
this is due today pls help
Answer: the answer is linear
Step-by-step explanation: (not sure what functions it’s talkin about but it is linear)
29 What are the solutions to 2(x - 5)2= 98?
Answer:
(x-5)²=98/2
x-5=√98/2
98/2=49
x-5=√49
= 7
x= 5 ± 7
= 12,-2
ans is C