A scientist needs 10 liters of 20% acid solution for an experiment, but she has only a 5% solution and a 40% solution. To the nearest tenth of a liter, about how many liters of the 5% and the 40% solutions should she mix to get the solution she needs?

Answers

Answer 1

Answer:

4.3L of the 40% solution and 5.7L of the 5% solution

Step-by-step explanation:

hope this helps


Related Questions

The ascending arrangement of 2/3 , 6/7 , 13/21 is

Answers

Answer:

[tex] \frac{13}{21} , \: \frac{2}{3} , \: \frac{6}{7} [/tex]

The table and the graph show information about students enrolled in spanish and french classes at a high school. use the graph to determine after how many years there will be equal enrollment in spanish and french classes

Answers

Answer:

after 6 years

Step-by-step explanation:

thats when the lines intersect, (6,300)

There will be equal enrollment in Spanish and French classes after 6 years from now.

The red line shows the number of students enrolled in French class each year from now and blue line shows the number of students enrolled in Spanish class each year from now.

The point of intersection of the lines is the point which lies in both the line.

So, it represents the point or time when there are same number of students enrolled in both French and Spanish classes.

From the graph, we can see that the two lines at a point [tex](6,300)[/tex]. The value on the [tex]x[/tex]-coordinate shows the years from now. So, we can say that there will be equal number of students enrolled in two classes after 6 years.

Learn more about intersection of two lines here:

https://brainly.com/question/13373561?referrer=searchResults

Factorise 3x²+5x-12
Show working out

Answers

hi <3

i'm not sure of which method you will have been taught but i'll try to explain the method i was shown.

so, you need to multiply the coefficient of x^2 by the last value

3 x -12 = -36

now, you need to find two values that multiply to make -36 but add to make 5.

9 and 4 would work. it would have to be positive 9 and negative 4, as these would subtract to give the 5 that you need

now we have:

(x - 4)(x + 9)

however, we need to achieve the 3 from somewhere so it needs to be divided somewhere

9 is divisible by 3 so you can divide it there. as 4 cannot divide by 3, you would move the 3 up to be the coefficient.

thus, your final answer would be:

(3x - 4)(x + 3)

hope this helps :)

Answer:

it's gonna be 3(X*2 + 4X - 4)

Step-by-step explanation:

Just factor out 3 from the expression

please help me! will mark brainliest

Answers

k = -2

√-72k = √(-72 · (-2)) = √144 = √12² = 12

The sum of 48 and itself,it's half and half of the half is added to 18​

Answers

48+48+24+12+18= 150

PLEASE HELP ASAP Due in 1 day!!!
Question 1
Find(f+g)(x)

f(x)=4x−4 and g(x)=2x^2−3x

Question 2
Find(f−g)(x)

f(x)=2x^2−2 and g(x)=4x+1

Question 3
Find(h⋅g)(x)

h(x)=3x−3 and g(x)=x^2+3

Question 4
Find(f/g)(x)and state the domain restriction.

f(x)=x+4 and g(x)=x+6

Answers

Step-by-step explanation:

Q1 . (f+g)(x) = f(x) + g(x)

=4x-4 +2x^2 -3x

= 2x^2 + x -4

Q2. (f-g)(x) = f(x) - g(x)

= 2x^2−2 - (4x+1)

= 2x^2 -2 -4x -1

= 2x^2 - 4x -3

Q3. h(x)=3x−3 and g(x)=x^2+3

(h.g)(x) = h(x) × g(x)

= (3x-3) × (x^2 + 3)

=3x^3 -3x^2 + 9x -9

Q4.f(x)=x+4 and g(x)=x+6

(f/g)(x) = f(x) ÷ g(x)

= x+4 / x+6

the domain restriction is x>-6

x<-6

x doesn't equal (-6)

If the two function f(x) and g(x) are to be combined, use basic arithmetic rules,

(f + g)(x) = f(x) + g(x)

(f - g)(x) = f(x) - g(x)

[tex](\frac{f}{g})(x)=\frac{f(x)}{g(x)}[/tex]

(f . g)(x) = f(x) × g(x)

Question 1

f(x) = 4x - 4 and g(x) = 2x² - 3x

[tex](f+g)(x)=f(x)+g(x)[/tex]

Therefore, [tex](f+g)(x)=(4x-4)+(2x^2-3x)[/tex]

                                   [tex]=2x^2+x-4[/tex]

Question 2

f(x) = 2x² - 2 and g(x) = 4x + 1

Since, (f - g)(x) = f(x) - g(x)

Therefore, (f - g)(x) = (2x² - 2) - (4x + 1)

                               = 2x² - 2 - 4x - 1

                               = 2x² - 4x - 3

Question 3

h(x) = 3x - 3 and g(x) = x² + 3

Since, (h - g)(x) = h(x) - g(x)

Therefore, (h - g)(x) = (3x - 3) - (x² + 3)

                                = 3x - 3 - x² - 3

                                = -x² + 3x - 6

Question 4

F(x) = x + 4 and g(x) = x + 6

Since, [tex](\frac{f}{g})(x)=\frac{f(x)}{g(x)}[/tex]

Therefore, [tex](\frac{f}{g})(x)=\frac{x+4}{x+6}[/tex]

Learn more,

https://brainly.com/question/7447002

Hannah but 3.4 pounds of apples she paid $.89 per pound how much did Hana pay for apples

Answers

Answer:

3.026 $

Step-by-step explanation:

3.4 × 0.89 = 3.026 $

Probability maths Please help

Answers

Answer:

it means maybe or either

a car drives 5km in 4 minutes. what is the speed of the car in kilometers per hour​

Answers

Answer:

810 km/h

I hope it's helps you

Hitler purchased a watch for Rs. 3500 and sold it to Alex at 5% loss. Find her loss amount and the price at which she sold the watch​

Answers

Answer:

Loss Amount: 175; Price: 3325

Step-by-step explanation:

You can multiply 3500 by 0.05 (which is 5% in decimal) to find how much is the loss. Then, you subtract the loss from the base price to find the new price.

Answer:

Loss =175, sold = 3325

Step-by-step explanation:

He bough at 3500

So 100 percent is 3500

And they said he had a 5% loss

So in other words, he sold it to Alex at 95% of the price he bought

So

3500 x 95%

3500 x 95/100

=3325

This is the price when Hitler sold it to alex

Now how much did Hitler lose?

3500 - 3325

=175

what is 9.58333333333 as a fraction?

Answers

Answer:

If you pacifically asking for the fraction 115/12

Step-by-step explanation:

I also looked on mathw it helps

please help, it's kind of easy.

Answers

Answer:

This ratio would be 12:1

Step-by-step explanation:

There's 12 gallons of water to 1 cup of cleaner.

Answer:

you would need 12 gallons of water.

Step-by-step explanation:

The ratio is 4 : 1/3. This means that for every 1/3 cups of cleaner, there is 4 gallons of water.

This in mind, 3 1/3 cups of cleaner would be 1/3 x 3.

Whatever you do to one side, you have to do to the other.

4 gallons x 3 = 12.

Hope this helps :)

(06.02 LC)
Simplify (4x - 6) + (5x + 1).
O9x + 5
O 9x - 5
Ox-5
O-x-5

Answers

Answer:

9x - 5 (second option)

Step-by-step explanation:

[tex](4x - 6) + (5x + 1)[/tex]

[tex]4x - 6 + (5x + 1) = 4x - 6 + 5x + 1[/tex]

[tex]4x + 5x = (4 + 5)x = 9x[/tex]

[tex]9x - 6 + 1 = 9x - 5[/tex]

[tex] = 9x - 5[/tex]

abc is a triangle in which ab=5cm, ca=13cm and bc=12 cm. calculate sina, cosc, tana, cotc, seea and cosec

Answers

SinA=12/13
CosC=12/13
TanA=12/5
CotC=1/5/12
SecA=1/5/13
CosecC=1/5/13

What is the product of (7/8 ) (-16) (-7) (-1/14)

A . -7
B . - 9/16
C . -1/7
D . 23/12

Answers

Answer:

I believe its A.

Step-by-step explanation:

(8.45* 10^6) – 1,200,000

please try to hurry!!!!!

Answers

Answer:

Ello mate, the answer to your problem is 7,250,000.

Step-by-step explanation:

Find the 7th term in the geometric sequence 3, 6, 12, ... Show your solution.​

Answers

a + (n-1) b

= 3 + (7-1) 3

= 3 + 6(3)

= 3 + 18

= 21

Answer:

192

Step-by-step explanation:

given the geometric sequence : 3, 6, 12, ...

T1 = 3

r = 6/3 = 2

T7 =?

T7 = T1. r^(7-1)

= 3 . 2^(7-1)

= 3. 2^6

= 3. 64

= 192


Tom drives at a steady speed covering 1 mile every minute. He comes to a
section of road where the speed limit is 50 mph.
Is he over the speed limit? Give a reason for your answer.

Answers

Answer:

Yes he is over the speed limit.

Step-by-step explanation:

1 mile per minute * 60 minutes (1 hour) = 60 miles per hour

60 > 50

what is the answer 2(5c + 8)?

Answers

Answer:

How to solve your problem

2 ( 5 + 8 )

Simplify

Step-by-step explanation:

Distribute

2 ( 5 + 8 )

1 0 + 1 6

solution:

1 0 + 1 6

there you go

hope this helps

Find the distance between the two points P(-7,-2) and Q(-1,6).
Round your answer to the nearest 10h if necessary.

Answers

Answer:

10

Step-by-step explanation:

√(x2 - x1)² + (y2 - y1)²

√[-1 - (-7)]² + [6 - (-2)]²

√(6)² + (8)²

√(36) + (64)

√100

= 10

Tell of the solution to the following equation. Explain your answer. 4(x + 3) - 4 = 8x + 10 - 4x​

Answers

I’m not sure what the answer is sorry

Answer the following question in brief

Answers

Answer:

14810 votes

Step-by-step explanation:

The canidate won, so that means that they were the 7 instead of the 5.

Then you divide 20734 by 7, to see how many votes were for each "1". That's 2962.

Now you know that every "1" is worth 2962. Since the other candidate got 5, you multiply 5 by 2962 which is 14810.

The other candidate got 14810 votes.

Hope that made sense

Answer:

The other opponent that lost got 14 810 votes.

Step-by-step explanation:

Hopefully the picture is clear and understandable

:)

I really need help with this math problem and please explain (-1) + (-2 2/5) =

Answers

Answer: -3 2/5

Step-by-step explanation:

When both integers are negative, you can treat them the same as positive numbers and add a negative sign to your final sum.

1+2 2/5 (or 2 4/10 or 2.4) is equal to 3 2/5. So (-1)+ (-2 2/5) is equal to -3 2/5, or -3.4.

solve the equation simultaneously:
y = 2-2x
y = -16 + 2(x-3)^2​

Answers

Answer:

y = -26

Step-by-step explanation:

[y = 2 - 2x] + [y = -16 + 2(x - 3)^2​]

y = -16 + 2x - 6^2

y = -16 + 2x - 6^2 + 2 - 2x

y = (+2x - 2x) - 16 - 6^2 + 2

y = -16 - 6^2 + 2

y = -16 - 12 + 2

y = - 28 + 2

y = -26

Find the perimeter. Simplify your answer.
4y-5
10y-4
7y+8
74-5

Answers

(10y - 4) + (7y + 8) + (7y - 5) + (4y - 5) =

= 10y - 4 + 7y + 8 + 7y - 5 + 4y - 5 =

= 10y + 7y + 7y + 4y - 4 + 8 - 5 - 5 = 28y - 6

The answers for the problem is 28y-6

Help me help me please

Answers

Answer:

The similar triangles are XYZ and MNP. Therefore, the answer is B.

I would say A because the size of the triangles are the same

48 points....which is equivalent?

Answers

Answer:

I think its b and c but I might be wrong let me check again

Step-by-step explanation:

Answer:

Option 2 and Option 3 is correct

Since u helped me it's the least i can do

Explanation:

I Promise this is the right answer

(Happy to Help)

(0.<)

A and Z are both between points M and N such that MZ=AN and A is between M and Z. Given: MA=5x AZ=3x-2 AN=6(2x-1) find MN

Answers

Answer:

MN = 11

Step-by-step explanation:

M___A___Z___N

MZ =MA+AZ

MZ = 5x + 3x -2 = 8x - 2

MZ = AN

8x - 2 = 6(2x-1)

8x - 2 = 12x - 6

12x - 8x = 6 -2

4x = 4

x =4/4

x =1

MA= 5x = 5(1) = 5

AZ = 3x-2 = 3(1) - 2 = 3 -2= 1

MZ = 8x -2 = 8(1)-2= 8-2=6

AN = 12x - 6 = 12(1)-6 = 12 - 6 = 6

MN = MA + AN = 5 + 6 = 11

I hope I helped you^_^

A store has a sale with 30% off every item. When you enter the store, you receive a coupon that states that you receive an additional 30% off. Is this equal to a
60% discount? Explain your answer.

Answers

Answer:

No, It is not equal to a 60% discount.

Step-by-step explanation:

Think of this. I go into a store and everything is 50% off and I have a coupon myself that is a 50% off discount for a specific item. It may seem like the item is now free, but it isn't. Imagine the item was $1 before any discount. Then the store took 50% off of the $1, leaving it at $0.50. So now with my discount of 50% off the item I will be taking this 50% off of $0.50 = my final discounted cost of $0.25.

Hope I helped you understand :)

Find X. I need help ASAP pls

Answers

Answer:

Step-by-step explanation:

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