Mathematics High School

When salt and water are combined, they form a salt or saline solution. How much ml of water must be added to 150 mL of an 80% saline solution to produce a 30% saline solution?

Answers

Answer 1
50%. Might be wrong but all I did was reduce 30% from 80%

Related Questions

Write an
equation of the line passing through the points (4,13) and (-1,- 12).

Answers

Answer:

Step-by-step explanation:

(-12 - 13)/(-1 - 4)= -25/-5 = 5

y - 13 = 5(x - 4)

y - 13 = 5x - 20

y = 5x - 7

Fraction
Decimal
Percent
2.5%

Answers

Answer:

Fraction-5/2

Decimal-.025

percent-2.5%

Step-by-step explanation:

Answer:

Fraction : 1/4

Decimal: 0.25

Percent: 2.5%

Explanation

What are the scale factor and center of dilation?

Answers

shreks poop that fell on the ground

Please help. its not hard

Answers

Answer:

Tbh Im not sure

Step-by-step explanation:

Answer:

I think the answer is 1/2 (x^2 + 11x + 30) but see the discussion below.

Step-by-step explanation:

I can hardly read the signs between the dimensions. This is my best guess.

Area Shaded = Area Rectangle - Area Triangle

Area Rectangle = (x + 5)(x + 6)

Area Triangle = 1/2 (x + 5 ) ( x + 6)

Area shaded = (x + 5)(x+6) - 1/2 (x + 5)(x + 6)

Area shaded = 1/2 (x + 5)(x + 6)

Area Shaded = 1/2 (x^2 + 11x + 30)

If the second factor (x + 6) is really x - 6 then the area of the shaded area is 1/2  (x+5)(x - 6)

Area Shaded = 1/2 * (x^2 - x - 30)

For what values of x is the expression below defined?
2x2 + 5x

Answers

Answer:

9

Step-by-step explanation:

What is 1.75 kilometres as a fraction of 700 metres?
Give your answer in its simplest form​

Answers

Answer:

5/2

Step-by-step explanation:

1000m = 1km

1.75km = 1750m

1750 / 700 = 5/2

Put these in descending order
-6/7,|8-9|,-|-6|

Answers

Answer:

-6/7,1,-6

1, -6/7, -6

Step-by-step explanation:

solve for x
(20 points)

Answers

Answer:

x=14

Step-by-step explanation:

the total surface area of this cuboid is 76cm^2 find the value of x (5cm = width, 4cm= length and x = height)

Answers

Answer:

Height x=2

Step-by-step explanation:

area of top & bottom:

(5)(4)(2)=40

area of 2 sides:

(x)(5)(2)=?

area of the other two sides:

(x)(4)(2)=?

total area=76

76=40+10x+8x

simplify:

36=18x

x=2

The perimeters of two similar triangles are 25 cm and 15 cm respectively. If one side of the first
triangle is 9 cm, find the corresponding side of the second triangle.
plz guys hrlp me if you solve i will make brainliest​

Answers

Answer:

5.4cm

Step-by-step explanation:

In similar triangles, the perimeter of the triangles will be in the ratio of their corresponding sides.

The ratio of their perimeter is  

perimeterofΔ2          15

---------------------   = -------------

perimeterofΔ1           25  

So, the side of triangle 2 will be  

  9  *  15                  15

----------------  =   --------------

​  sideofΔ2                25

=  

​⟹side of Δ2=           25  / 9∗15         =5.4.

Amelia's account balance is $16. If she uses her debit card to buy a $32
shirt from the mall, what will the balance of her account be?

Answers

Answer:

-$16

Step-by-step explanation:

16-32=-16

Five thousand two and five hundred twenty-three millionths in decimal form

Answers

Answer:

5,002.0523

Step-by-step explanation:

Hope this helps!

OK OK PLSSS HELPP PLSSS

Answers

Answer:

[tex]18in^{2}[/tex]

Step-by-step explanation:

[tex]A=2*2+7*2=18in^{2}[/tex]

please help(: ( 8th grade lesson)

Answers

Step-by-step explanation:

Since angle 1 is on a straight line and we know that angle 4 is 160, and a straight line has a sum of 180 degrees, simply subtract 160 from 180 to get angle 1.

Angle one would be 180-160 = 20

Since the sum of angles in a triangle is 180 and we already know 2 of them, angle 1 is 20 and angle 3 is 30, just add them together and then subtract that from 180. 20 + 30 = 50, and 180 - 50 = 130.

So in conclusion:

Angle 1 is: 20

Angle 2 is: 130

l

The function P(1) - 5,000(1.098)' models the value, in dollars, of a painting after t years. What is the initial value of the painting?

Answers

Answer:

the answer is $5,000

Step-by-step explanation:

the question is asking what the initial value of the painting is and in the equation, they are trying to find out how much the painting will cost after t years. the 1.098 is how much the painting decreases each year and it is being multiplied by &5000 so $5000 is the original value of the painting.

Martin charges $10 for every 5 bags of leaves he rakes. Last weekend, he raked 24 bags of leaves. How much money did he earn?

Answers

Answer:

Solution:

24 divided by 5 = 4.8

round 4.8 down to 4

10 times 4 = 40

Martin earned 40 dollars.

Step-by-step explanation:

Hope this helped!

Answer:

Martin earn $48

Step-by-step explanation:

24/5 = 4.8

4.8 x 10 = 48

So Martin earn $48


1
5
5.0,
71
1. -0.3, 4.33, -12, 10001, -12, -2017, 4
From the given numbers, list the numbers that are
(i) positive integers, (ii) negative integers,
(iii) positive numbers, (iv) negative numbers.​

Answers

Answer:

positive number

Step-by-step explanation:

because I got it right

For which value of x will the rational expression below be undefined? Check all that apply. (x-5)(x+2)/x+1 A. -5 B. -1 C. 1 D. 5 E. -2 F. 2

Answers

Answer:

B. -1

Step-by-step explanation:

Given expression:

(x-5)(x+2)/(x+1)

This is undefined when the denominator is zero:

x + 1 = 0x = -1

Correct choice is B

Answer:

Answer :-

[tex] \sf \: \dfrac{(x - 5)(x + 2)}{x + 1} [/tex]

Now,

Taking denominator as 0

x + 1 = 0

x = 0 - 1

x = -1

HELP ME PLLEEAASSEEE

Answers

Answer:

The relationship is that it might goes by 2

Find two positive numbers satisfying the given requirements.
The product is 152 and the sum is a minimum.

Answers

Answer:

8 and 19

Step-by-step explanation:

To some this, let's first list all the factors of 152. They are;

1, 2, 4, 8, 19, 38, 76, 152.

Now, let's arrange them to reflect being multiplied to get 152.

Thus;

1 × 152 = 152

2 × 76 = 152

4 × 38 = 152

8 × 19 = 152

Also, let's do the same for their sum;

1 + 152 = 153

2 + 76 = 78

4 + 38 = 42

8 + 19 = 27

Looking at the figures above, the ones that their product is 152 but have the least sum are 8 and 19

So I need 20 words but I don’t get why so here’s this useless sentence

Answers

14(10) + 2, 14x10 is 140 plus 2 = 142
2(7(10) + 1) 7x10 = 70 + 1 = 2(71) = 142

A stock fell 80 points on Monday and rose 65 points on Tuesday. By how
much has the value of the stock changed over the two-day period?

Answers

15 points .............

Solve for each variable X and Y.

Answers

Answer:

x=5 and y=7

Step-by-step explanation:

The opposite parallel sides of any rhombus are going to be equal.

a.) Knowing this you take (x+14) and make it equal to (5x-2). Then you subtract the x from (x+14), and add the 2 from (5x+2), making the new equation 16=4x. You divide 4 by x and by 16, getting the final simplified answer of x=4.

b.) Using the same method you take 3y-3 and set it equal to (2y+4). Then you subtract the 2y from (2y+4) and add the 3 from (3y-3) to bother sides. Now you have your new equation and answer being y=7.

a.) x+14 = 5x-2

b.) 3y-3 = 2y+4

Diego took a survey to find out how many students plan to go to a school band concert. There are more than 1,000 students in his school. He selected a sample by asking the first 50 students he met at band practice.

Answers

Answer: N/A

Step-by-step explanation: We need more info to solve this problem

Answer:

The one above is wrong

The actual answers are A and D

Identify the place value of digit 9 in each given number.
1.109 235 2.2 904 178 3.34 698.25

Tysm!<33​

Answers

Step-by-step explanation:

1) Thousands

2) 100 thousands

3) tens

In March there was 85 mm of rain. In April there was 68 mm. What is the percentage change?
A. 20% fall
B. 18% fall
C. 19% fall
D. 25% fall

Answers

18:) I hope that helped

A salesman earns $500 a month plus $20 per item sold . How much will he earn if he sells 15 items

Answers

20x+500
20(15)+500
300+500= 800

What is the slope (1,3) and (5,4)

Answers

Answer:

1/4

Step-by-step explanation:

y2-y1

--------

x2-x1

(x , y)

(1 , 3)

(5 , 4)

4-3=1

--------

5-1=4

you start at 5,4 and move 2 units left and 2 units down

Answers

Answer:

(3,2)

Step-by-step explanation:

Answer:
(3,2)

Explanation:
When you move the point up, add to the y-coordinate. When you move the point down, subtract from the y-coordinate.
When you move the point to the right, add to the x-coordinate. When you move the point to the left, subtract from the x-coordinate.

(5,4)
Because we move 2 units left, we subtract 2 from the x-coordinate.
(3,4)
Because we move 2 units down, we subtract 2 from the y-coordinate
(3,2)

I hope this helps!

(102-38) x 14+7+162=

Answers

Answer:

=64x^14+169

Step-by-step explanation:

happy to help ya :)

12,810 I think. Hope this helps
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