Answer:
The technician can combine 10 liters of pure acid with 30 liters of 20% acid to get the desired concentration
Step-by-step explanation:
For pure acid, the concentration will be 100%
Let the liters of pure be a and the liters of 20% be b
Since we want 40 liters of total;
a + b = 40 ••••••••(i)
Also,
100% of a + 20% of b = 40% of 40
a + 0.2b = 16 •••••(ii)
From ii , a = 16-0.2b
Put this into i
16-0.2b + b = 40
0.8b = 40-16
0.8b = 24
b = 24/0.8
b = 30
Since a + b = 40
a = 40 - b
a = 40-30
a = 10
please help me with it due today
Answer:
-9x
Step-by-step explanation:
trust me it’s -9x
Answer:
13x - 22
Step-by-step explanation:
combine like terms 8x + 5x= 13x and 15-37= -22, so the simplified expression is 13x-22
The graphs of functions f(x) and g(x) = f(x) + k are shown below:
k=____
Answer:
[tex]\red{Centroid(G)= \big(2,\frac{2}{3}\big)}[/tex]
[tex]\green{\begin{gathered}The\: coordinates \: of \\ the \: mid\:point \:of \: the \: sides \\of\:a\:triangle\:are\\ (1,1),(2,-3)\:and\:(3,4)\end{gathered}}[/tex]
[tex]\orange{\begin{gathered}x_{1}=1,y_{1}=1;\\x_{2}=2,y_{2}=-3;\\x_{3}=3,y_{3}=4\end{gathered}}[/tex]
[tex]\blue{\begin{gathered}Now,\\Centroid (G)=\big(\frac{x_{1}+x_{2}+x_{3}}{3},\frac{y_{1}+y_{2}+y_{3}}{3}\big)\end{gathered}}[/tex]
[tex]\red{\begin{gathered}=\big(\frac{1+2+3}{3},\frac{1-3+4}{3}\big)\\=\big(\frac{6}{3},\frac{2}{3}\big)\\=\big(2,\frac{2}{3}\big)\end{gathered}}[/tex]
Therefore,
[tex]\pink{Centroid(G)= \big(2,\frac{2}{3}\big)}[/tex]
find the units digit of the square of the following numbers .
(a) 406
(b) 30,465
(c) 48,798
(d) 33
(e) 1,60,0001
What's is √13×√52 = ?
Answer:
[tex]26[/tex]
Step-by-step explanation:
We have:
[tex]\sqrt{13}\times\sqrt{52}[/tex]
Notice that 52 is the product of 13 and 4. So:
[tex]=\sqrt{13}\times \sqrt{13\times 4}[/tex]
We can separate the second one:
[tex]=\sqrt{13}\times\sqrt{13}\times\sqrt{4}[/tex]
We can combine the first two:
[tex]=\sqrt{13\times13}\times\sqrt4[/tex]
We can write [tex]13\times13[/tex] as [tex]13^2[/tex]. So:
[tex]=\sqrt{13^2} \times \sqrt4[/tex]
The square root and the square will cancel. The square root of 4 is 2. So:
[tex]=13\times2[/tex]
Multiply:
[tex]=26[/tex]
Therefore:
[tex]\sqrt{13}\times\sqrt{52}=26[/tex]
Five times a number p multiplied by three times another number q
Answer:
5p times 3q.
Step-by-step explanation:
5 times p is 5p multiplied by 3 times q, or 5p times 3q.
set of numbers which is continuos in number line
Answer:
Inteager and some other number can be present on number line continuously.. 1/2, 2/2 ,3/2 ,4/2 etc.
Does this graph represent a function? Why or why not?
A. Yes, because it has two straight lines.
ооо
OB. Yes, because it passes the vertical line test.
O C. No, because it fails the vertical line test.
O D. No, because it is not a straight line.
Answer:
C. No, because it fails the vertical line test.
Step-by-step explanation:
The vertical line test a method used to check if a graph represents a function.
if you move a vertical line along the graph the line always crosses one point at a time however if the line touches two points at the same time then it is not a function .
The graph fails the vertical line test, it does not represent a function
C. No, because it fails the vertical line test
What is vertical line test?The vertical line test is a graphical test used to determine if a graph represents a function.
According to the vertical line test, if any vertical line intersects the graph in more than one point, then the graph does not represent a function.
In the graph provided, we see that there a vertical line will intersect the graph in more than one point.
Since the graph fails the vertical line test, it does not represent a function. Therefore, option C is the correct answer: "No, because it fails the vertical line test."
Learn more about vertical line test
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40X - 20x = 20(
blank-blank)
Answer:
x=1
or
[tex]x=-\frac{1}{40}[/tex]
Step-by-step explanation:
if the question says 40 times negative 20x equals 20 the answer is [tex]x=-\frac{1}{40}[/tex]
if the question is 40x minus 20x equals 20 then the answer is x=1
What is the definition of a covalent bond?
A.a bond between a positive and a negative ion
B.a bond between two negative ions
C.a bond between two positive ions
D.a bond between two atoms
Answer:
D: A bond between two atoms
Step-by-step explanation:
HELPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Answer
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Answer:
Step-by-step explanation:
The number is represented through the letter x.
I think of a number, subtract four, then divide by three.
Subtract four will be - 4
Divide by three will be /3
Step-by-step explanation:
1. Find the area.
2.1 cm
3 cm
А
31.5 cm2
10.5 cm2
15 cm2
15.75 cm2
6.3 cm2
Answer:
See below.
Step-by-step explanation:
The answer would be either 15 or 15.75. I did the math and got 15.48.
-hope it helps
how much do you need to subtract from 77/10 to make 7
Answer: 7/10 or 0.7
Step-by-step explanation: 77/10 in decimal form is 7.7. To make 7, you would need to subtract that .7 which would translate to 70/10 after it's subtracted, which is 7.
Answer:
7
Step-by-step explanation:
you need to subtract 7 because 77/10 is 7.7
77-7 is 70. 70/10 is 7
There are 3 red, 2 yellow.
1 blue, and 5 green
deflated balloons in a
sack. What is the
probability of drawing out
a yellow balloon?
Answer:
The probability is like 0.18 or 18%
Step-by-step explanation:
Alex is adding baseball cards to sleeves in his binder. He filled 2 7 of his binder the first day. On the second day he filled 4 7 . How much of his binder did Alex fill in those two days
Answer:
Alex filled 6 7 of his binder.
Step-by-step explanation:
Find the total amount given the original price, tax rate and tip rate. Round to the nearest hundredth if necessary.
Original price: $101.33
Tax rate: 6.7%
Tip: 18%
Enter the correct answer in the box.
Answer:
126.360
Step-by-step explanation:
Can someone please help me out with this math problem please4895 divided by 8?
4,895 ÷ 8 should be 611 . 875
The graphs below have the same shape. What is the equation of the blue
graph?
Answer:
the correct answer is B for the blue graph
3. Boynton Beach recreation center has collected a total of 510 donated tickets for free ice
cones. Beginning on the second day of summer vacation, the recreation center randomly
selects 9 children to each receive one of the free ice cream tickets. Assuming the
recreation center continues this pattern of giving away tickets to 9 children each day,
which explicit formula shows the
number of ice cone tickets remaining at the end of the
day, after n number of days?
a.=510-9n
B.=510+9(n-1)
C.510-9(n-1)
D.9(n-1)-510
Answer:
Hence, in this case, it is concluded that the correct answer is "N = 618 - n x 7"
Step-by-step explanation:
Considering the situation described above, the explicit formula that shows the number of ice cream tickets remaining at the end of the day, after n number of days is "N = 618 - n x 7."
This is based on the idea that each day of the ice cream ticket is defined as 7 tickets taken.
Thus the ticket listing for each day is described as
Day 1. 618 - 7 OR 618 - 1 × 7;
Day 2. 618 - 14 OR. 618 - 2 × 7;
Day 3. 618 - 21 OR 618 - 3 × 7;
Therefore, from this illustration above, the formula needed is: "N = 618 - n x 7."
Which of the following is / are the solution(s) of the equation |x+3|= −10?
Answer:
(no solutions)
Step-by-step explanation:
Solve for x:
abs(x + 3) = -10
Hint: | Show the equation has no solution.
By definition, absolute value is positive. Therefore abs(x + 3) = -10 has no solution:
mateo bought a grand piano for $5 010.25. the piano increases in value by 1.99% each year. which equation can be used to find the number of years it will take for the piano to be worth twice the original purchase price?
Answer:[tex]5010.25(1.0199)^2[/tex]
Step-by-step explanation:
this is the equation that you would use to solve this problem.
please mark 5 stars and give brainlest!
7 (3) (-2)
PLEASE HELP ASAP!!!!
Answer: the pic is the answer and
Step-by-step explanation:I explaned on the pic HOPE THIS HELPS WITH UR QUESTION
I NEED HELP!!!!!!!! PLEASE HELP ME!!!!!!
Step-by-step explanation:
I solved it for you by steps...
I hope you understand...
What type of association does the graph show between x and y? (5 points)
Linear positive association
Nonlinear positive association
Linear negative association
Nonlinear negative association
Answer:
B. nonlinear positive
Step-by-step explanation:
in the graph it shows what would be a line that curves in the upward direction, and a linear line is a straight line without a curve, so you know the line is non-linear, it also shows it traveling to the upward facing position, this makes it a positive line/slope.
Somebody please help me
Renee, Susan, and Martha will share the cost to rent a vacation house for a week. • Renee will pay 40% of the cost. • Susan will pay 0.35 of the cost. • Martha will pay the remainder of the cost. Martha thinks that she will pay 13 of the cost. Is Martha correct?
Answer:
Martha is wrong.
Step-by-step explanation:
Let the cost of the house is C.
Payment by Ranee = 40% of the cost
=40% of C
=[tex]\frac{40}{100}\times C[/tex]
=0.40 C
Payment by Susan = 0.35 of the cost
=0.35 C
Combined payment by Ranee and Susan = 0.40C + 0.35C=0.75C
The remaining payment will be done by Martha.
So, the remaining payment = C- 0.75C=0.25 C
Hence, Martha will have to pay 0.25 of the cost or 25% of the cost.
So, Martha is wrong.
anyone good in math?
Answer:
no lol
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
HELP IN THE ENST % MINUTES AND ILL MARK YOU BRAINLY
Answer:
y=51 x=8
Step-by-step explanation:
if your in a rush I'll explain later
10x + 6y - 5x idk how to do this
5x+6y is the answer i jope this helps you
What is the sum of 34 + 19 is
53
4 + 9 = 13, the one carries over, so 3 + 1 + 1 = 5
Answer:
53
Step-by-step explanation:
9 add 4 gives you 13 10 plus 30 is 40 add 13 53
domnics video game has a perimeter of 18 inches the width is 4 inches what is the height of the video game