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Rzqust [24]
3 years ago
8

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is

20% salt and
Solution B is 80% salt. She wants to obtain 180 ounces of a mixture that is 30% salt. How many ounces of each solution should she use?
​

Mathematics
1 answer:
navik [9.2K]3 years ago
5 0
The answer is 150 oz of solution a and 30oz of solution b. I’m adding in the work please ask if you have any questions

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Please someone help me if you can't that is okay but please try I am extremely desperate
Snowcat [4.5K]
A, you combine like terms
7 0
3 years ago
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Please help, please help
zmey [24]
Answers:
x=22
x+4=26
6x=132

Explanation:
We learned from the question that all of the angles in a triangle add up to 180 degrees.

180=angle+angle+angle

When we plug in the values that the question gives us for the angles, we get this equation:

180=x+6x+(x+4)

After solving this equation, we get 22 as the value of x (The process of solving that equation is in the picture attached).

To solve for (x+4), we plug in the value of x, which is 22 and add 4.

(x+4)
=(22+4)
=26

And finally, to solve for 6x, we plug in 22 again:

6x
=6*22
=132

Hope this helps!

7 0
3 years ago
NEED HELP ASAP!!!!!!!
Elan Coil [88]
I think the answer is C
3 0
3 years ago
Can you please help me with this i will give you a branlist
mote1985 [20]

Answer:

The answer is C

Step-by-step explanation: because it is reflecting and is backwards.

4 0
3 years ago
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The Earth completely rotates on its axis once every 24 hours.
strojnjashka [21]

Answer:

A)

62/3 = 20.67 hours

B)

60.00 hours

C)

2074.29 miles

Step-by-step explanation:

If we assume the earth is a perfect circle, then in a complete rotation the earth covers 360 degrees or 2π radians.

A)

In 24 hours the earth rotates through an angle of 360 degrees. We are required to determine the duration it takes to rotate through 310 degrees. Let x be the duration it takes the earth to rotate through 310 degrees, then the following proportions hold;

(24/360) = (x/310)

solving for x;

x = (24/360) * 310 = 62/3 = 20.67 hours

B)

In 24 hours the earth rotates through an angle of 2π radians. We are required to determine the duration it takes to rotate through 5π radians. Let x be the duration it takes the earth to rotate through 5π radians, then the following proportions hold;

(24/2π radians) = (x/5π radians)

Solving for x;

x = (24/2π radians)*5π radians = 60 hours

C)

If the diameter of the earth is 7920 miles, then in 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle we have;

circumference = 2*π*R = π*D

                         = 7920π miles

Therefore, the speed of the earth is approximately;

(7920π miles)/(24 hours) = 330π miles/hr

The distance covered by a point in 2 hours will thus be;

330π * 2 = 660π miles = 2074.29 miles

8 0
3 years ago
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