Please help me! This is very important! Who every answers first and I think that answer is really good I will mark Brainly est!!!! Please help me! I need details! Please I really need this

Answer:

240g of 10% salt solution and 160g of 5% salt solution

Step-by-step explanation:

Simpler way:

Let X be the amount of 10% salt solution and Y be the amount of 5% salt solution.

Then X:Y = 3:2 as you need more 10% salt solution than 5% salt solution to create a 8% salt solution. The ratio 3:2 is given as 10 - 8 = 2 and 8-5 = 3.

If X:Y = 3:2 = 60:40, then 60% of the 400g of 8% salt solution must be the 10% solution and 40% of the 400g of 8% salt solution must be the 5% solution. Therefore, 240g of the 10% salt solution and 160g of the 5% salt solution is needed to create 400g of the 8% salt solution.

This is correct as the amount of salt in the solution is equal to (10% X 240g = 24g) + (5% of 160g = 8g). So the total amount (24+8) 32g should be equal to the amount of salt in the 400g of 8% salt solution.

8% of 400g = 32g which means our answer is correct.

More complex way:

A more complex way is to use algebra.

Let X be the amount of 10% salt solution and Y be the amount of 5% salt solution.

X + Y = 400g

and 10% of X + 5% of Y = 8% of 400

so 1/10 X + 1/20 Y = 32

2X + Y = 640 (multiply the previous equation by 20)

Now from the first line we know that X + Y = 400

So if we subtract (2X+Y) by (X+Y) we can get the value of X:

(2X+Y) - (X+Y) = 640 - 400

2X+Y - X - Y = 240

Therefore X = 240

And since X + Y = 400, Y = 160.

Answer: 18

Step-by-step explanation: -8,2 is 18 away from 10,2 because -8 is 18 away from 10

Answer:

P(blk sk AND gy shr)=P(blk sk)*P(gy shr)=7 /578

P(gy shr)=2/34

P(blk sk)=7/34

blk=Black

sk=Sock

gy=Grey

shr=Shirt

Answer:

Aunts = 6/24 => 3/12 => 1/4

Sisters = 2/24 => 1/12

hope that helps uh..☺

Answer:

1/2  is the answer

Answer:

(-1,1) (-2,3) (1,3) (1,1)

Step-by-step explanation:

Answer:

-6+3 because you can distribute the negative sign into the parenthesis and make it a positive.

Answer:

So the answer would be -6+3

Step-by-step explanation:

Here's why:

So think of this strategy when working with these problems

Draw the line connect the sign

This means to convert the -(- into a plus sign, which makes these problems way easier

So that's why the answer is -6+3

Answer = -3

Hope this helps!

Answer:

C. 3

Step-by-step explanation:

Order the numbers from least to greatest. Median is the middle number so you get two 3's but its the same number so its just gonna be 3.

its one of the maritime climates

Answer: Therefore,

1 + (-5/8)

Solve it,

= 1-(5/8)

= (8-5)/8

= 3/8

Step-by-step explanation:

Answer: 2 : 1

Step-by-step explanation:

24 and 12 both are divisible by 12 so

Divide 24 / 12 and 12 / 12

= 2 : 1

Hope it helps you !!

Step-by-step explanation:

you'll use the previous date t fine the difference ex. if yesterday was 80 degrees and today's is 84 the difference would be 4 degrees. hope this helps a bit ( I'm pretty sure this is correct also remember if you need ask teacher for help!!)

Answer:

Step-by-step explanation:

Basically you have to look at the forecast each day and find the lowest and highest tempreature that day and find the difference and subract the two numbers of the tempreature.

Answer:

Hope this helps

accoding to the web "He started out 25 meters below the edge of the volcano. It takes him 6.25 seconds to reach the edge."

Answer:

25 meters below the edge; 6.25 seconds  

Step-by-step explanation:

We can represent this with a linear function in slope-intercept form.  

We know the rate of change is 4 since he climbs up at 4 meters per second.  We do not know the value of b, the y-intercept.  

This gives us  

y = 4x + b  

We know that he is 13 meters below the edge after 3 seconds.  Using -13 for y and 3 for x,  

-13 = 4(3) + b  

-13 = 12 + b  

Subtract 12 from each side:  

-13-12 = 12+b-12  

-25 = b  

This gives us the equation  

y = 4x - 25  

He started out 25 meters below the edge of the volcano.  

To find how long it took him to reach the edge, substitute 0 in for y:  

0 = 4x - 25  

Add 25 to each side:  

0+25 = 4x-25+25  

25 = 4x  

Divide both sides by 4:  

25/4 = 4x/4  

6.25 = x  

It takes him 6.25 seconds to reach the edge.

Answer:

3 boxes

Step-by-step explanation:

divide 21 by 7

Answer:-19

Step-by-step explanation:

3x+5-(2x-3)=0

3x+5-2x+3=0

x+8=0

x=-8

substitute x into 3x+5 to find the length of MO

3x+5

3(-8)+5

-24+5

-19

Answer:

It's the 5th answer / E

Step-by-step explanation:

The correct equation that Jordan can use to solve the division problem 42 divided by 7 is:

? x 7 = 42

So, the correct equation is option 3) ? x 7 = 42.

Given that, Jordan has to solve this division problem: 42 divided by 7 = ?

In this case, Jordan needs to find the value of the missing factor, which represents how many times 7 can be multiplied to get 42.

Therefore, he can use the equation:

? x 7 = 42

This equation represents the inverse operation of division, which is multiplication.

When we know one factor (7) and the product (42), we can use multiplication to find the missing factor (the quotient).

By solving for the missing factor, he will find the correct answer to the division problem:

The missing factor = 42 / 7 = 6

So, the correct equation is option 3) ? x 7 = 42.

To learn more on division click:

brainly.com/question/21416852

#SPJ6

Answer:

51ab^2/20c

Step-by-step explanation:

[tex]\frac{17a^3b^2}{15b^3c^2} *\frac{18b^4c^3}{8a^2bc^2} \\\\\frac{17*18a^3b^6c^3}{15*8a^2b^4c^4} \\\\\frac{51ab^2}{20c}[/tex]

Step-by-step explanation:

in order of the chart they are in axis number:

3

3

2

2

4

1

4

3

Answer:

B: Irrational

Step-by-step explanation:

I did this test to i promise its right.

Answer:

Step-by-step explanation:

Given polynomial:

Convert this into standard form, order in descending powers:

The leading term, -2x⁹ is the one with the greatest power. Its coefficient, -2 is the leading coefficient.

[tex]\\ \rm\longmapsto 3x^6-2x^9+5x-12[/tex]

Write in standard form

[tex]\\ \rm\longmapsto -2x^9+3x^6+5x-12[/tex]

-2x has greatest degree hence leading coefficient is -2.

Answer: p=2

Step-by-step explanation:

4.05p+14.40=4.50p+13.50

4.50p-4.50p=13.50-14.40

-0.45p=-0.90

p=-90/-0.45

p=2

.'. 2 pounds are needed to trail milk

Answer:

The answer is 410 5/8

Answer:

3x10^-3

Step-by-step explanation:

Answer:

I dont know

Step-by-step explanation:

Answer:

Complete step-by-step answer:

Sum of 3 consecutive odd numbers is equal to 51.

Let the odd number be ‘x’. Then the next consecutive odd number becomes ‘x + 2’ and the next term becomes x + 2 + 2 = ‘x + 4’.

Now the sum of these three odd consecutive terms = x + x + 2 + x + 4 = 3x + 6.

According to the given, 3x + 6 = 51.

⟹3x = 51 – 6

⟹x =453=15.

Hence, the numbers are 15, 17 and 19.

Note: In order to solve this type of questions the key is to consider a variable to be odd and compute the sum of three consecutive odd numbers in terms of this variable. Then by solving for this variable we can determine the numbers. Any odd number added with 2 gives an odd number itself.

Step-by-step explanation:

Answer:

b is the correct answer

Step-by-step explanation:

(ii) A perfect cube does not end with two zeros. (iii) If square of a number ends with 5, then its cube ends with 25. (iv) There is no perfect cube which ends with 8.Cube roots of negative numbers are always negative.