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ella [17]
3 years ago
9

Compare and contrast pounds and ounces

Mathematics
1 answer:
Brut [27]3 years ago
4 0

Out of the two units, ounce is smaller than pound and both have traditionally been used for different purposes. Whereas ounces are used to measure precious metals and spices as they are required in smaller quantities, pounds are used to measure fruits and vegetables, and interestingly, mass of people also.

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A chemist is mixing two solutions, solution A and solution B. Solution A is 15% water and solution Bis 20% water. She already ha
LiRa [457]

Answer:

15 ml

Step-by-step explanation:

We are told

Solution A = 15% of water

Solution B = 20% of water

Let's assume, the entire solution = 100ml

We are told that in the beaker we have 10 ml of Solution A already

Mathematically,

100 ml = 15%

10 ml = X

100ml × X = 15 × 10

X = 150/ 100

X = 1.5%

Hence in the beaker, we have 1.5% of water from Solution A

We are asked to find how many ml of solution B must be added to make the solution have 18% of water

Let y = number of ml of solution B

Hence

10 ml × 15%(0.15) = 1.5 ml of water - Equation 1

y ml × 20%( 0.20) = 0.20y ml of water ...... Equation 2

Add up the above equation

10ml + y ml ×18% (0.18) = 1.5 + 0.20y

(10 + y)(0.18) = 1.5 + 0.20y

1.8 + 0.18y = 1.5 + 0.20y

Collect like terms

1.8 - 1.5  = 0.20y - 0.18y

0.3 = 0.02y

y = 0.3/0.02

y = 15ml                              

Therefore,15mL of solution B must be added to the beaker in order to create a mixture that is 18% water

                     

4 0
3 years ago
Christian and Megan want to purchase a new car. The car has a base price of $16,700, options totaling $1,095, and a destination
Leni [432]

Answer:

it's B

Step-by-step explanation:

because I took the test

5 0
3 years ago
Question 2:
Mashutka [201]
He rode his bike for 45 min a day for 6 days that means he rode 270 min in total. And the total he worked out was 360 min that week.

360 - 270 = 90

Now you divide by 6 because of the days he worked out.

90 divided by 6 = 15.
3 0
3 years ago
Is -2.5 rational or irrational
kakasveta [241]

rational because it can be written as a fraction

If a number can not be written as a fraction it is irrational

5 0
3 years ago
Read 2 more answers
F(x)=5/x-1<br> g(x)=4-2x<br> Calculate fg(x)
Leno4ka [110]

Answer:

Step-by-step explanation:

define function fg(x) :

Fg(x)  = f(g(x))

         = \frac{5}{x} (4-2x)-1

         = \frac{20}{x} - \frac{10x}{x} - 1

         = 20 - 10x -1

         = 20 - 1 - 10x

         = 19 - 10x

5 0
1 year ago
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