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Elena-2011 [213]
3 years ago
10

A 280 mL solution is 20% salt. How much water should be added to make the solution14% salt?​

Mathematics
1 answer:
QveST [7]3 years ago
3 0

Answer:

400

Step-by-step explanation:

20%/14% = 1.42857

1.42857 x 280 = 400.

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Please answer and show work.
andrew11 [14]
Simplifying
9 + -2x = 35

Solving
9 + -2x = 35

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-9' to each side of the equation.
9 + -9 + -2x = 35 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = 35 + -9
-2x = 35 + -9

Combine like terms: 35 + -9 = 26
-2x = 26

Divide each side by '-2'.
x = -13

Simplifying
x = -13
4 0
4 years ago
A car averaged 48 miles per hour traveling 672 miles from Washington to Orlando. How long was the trip?
lora16 [44]
14 hours
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4 0
3 years ago
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Jeff is 6 years older than Sam. In four years he will be twice as old as Sam was 5 years ago. Find both their ages now... can u
kompoz [17]
I think he will be 10 year old
6 0
3 years ago
What is the equation of the funcion that is graphed as line b?
dolphi86 [110]

Answer:

The equation for b would be y = 1/2x + 1

Step-by-step explanation:

In order to find this, start by finding two points on the line. We'll use (0,1) and (2, 2). From there we start by finding the slope.

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Now using that, we can plug it, along with a point into point-slope form to get the answer.

y - y1 = m(x - x1)

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8 0
3 years ago
Jada is standing 10 feet from the base of the tree and spots a nest sitting on a branch. the angle of elevation from the ground
kogti [31]

Answer:

h = (10 ft)(1.428) = 14.28 ft

Step-by-step explanation:

Represent the height of the nest by h.  This is the vertical side of a triangle.  The horizontal side is 10 ft.

The following relationship is true:

tan 55 degrees = (opposite side) / (adjacent side), and in this case,

tan 55 degrees = h / 10 ft, so that:

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h = (10 ft)(1.428) = 14.28 ft

8 0
4 years ago
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