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cricket20 [7]
3 years ago
6

Which properties of equality are used to solve the following (in no particular order)?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
3 0

All except combine like terms. Since you only have 1 variable.

Hope this helps.

r3t40

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A 20-gallon salt-water solution contains 15% pure salt. How much pure water should be added to it to produce a 10% solution?
Elanso [62]

15% of 20 gal = 0.15 * 20 gal = 3 gal, so the solution contains 3 gal of salt.

If we add <em>x</em> gal of water to the solution, we end up with (20 + <em>x</em>) gal of solution. We want the new mixture to have a concentration of 10%, or

10% of (20 + <em>x</em>) gal = 0.1 * (20 + <em>x</em>) gal = 2 + 0.1<em>x</em> gal

of salt.

The amount of salt in the tank hasn't changed. Solve for <em>x </em>:

2 + 0.1<em>x</em> = 3

0.1<em>x</em> = 1

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3 0
3 years ago
Pls help me or me fail
Mrac [35]

Answer:

Cumin has the least price per ounce

Step-by-step explanation:

1. Divide each spice price to the size

Cumin -> 4.80/1.5= 3.2  

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Nutmeg -> 6.30/ 1.8= 3.5  

Thyme -> 4.50/ 1.25= 3.6  

5 0
3 years ago
2. Which is the following equation rewritten in slope-intercept form: -8x = 2 - 2y
Anna007 [38]

Answer:

B, y = 4x + 1

Step-by-step explanation:

to get it into y- intercept form we need to write it in the form y = mx + b

-8x = 2 - 2y, move 2y to the other side and -8x to the other side they both become positive.

2y = 8x + 2, dividing each by 2

yields y = 4x + 1

Hope this helps

8 0
3 years ago
Geri ran in a marathon race. It took her 3 hours and 28 minutes to run 26 miles. How many minutes did it take her to run 1 mile
nadya68 [22]

1 hour = 60 minutes, so 3 hours = 3 * 60 = 180 minutes.

Her total time was 3 hours and 28 minutes, so 180 + 28 = 208 minutes.

Divide her total time by total miles run:

208 minutes / 26 miles = 8 minutes per mile.

5 0
3 years ago
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What is the volume, in cubic meters, of a cube with an edge length of 5 meters?
Lilit [14]
125 cubic meters
V=lwh
125= 5 • 5 • 5
8 0
3 years ago
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