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Tasya [4]
2 years ago
10

Make b the subject of this formula. a=9b

Mathematics
1 answer:
USPshnik [31]2 years ago
6 0

Answer:

a = 9b

divide each side by 9

\frac{a}{9} = b

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The quotient of 15 and a number is 1 over 3 written as an equation
Agata [3.3K]

Answer:

15/x=1/3

Step-by-step explanation:

The quotient of 15 and a number=15/x=1/3

15/x=1/3


6 0
1 year ago
How many ounces of pure nickel must be added to 150 ounces of alloy 70% pure to make an alloy which is 85% pure?
galben [10]

Answer:

150 oz.

Step-by-step explanation:

There are already 150 ounces of alloy of nickel.

Of this 150 oz, 70% is pure i.e. nickel content = 150(0.7) = 105 oz

Now available is

Nickel       Other metals

105                  45

Let x oz of pure nickel is added.

Then new alloy will have 105+x oz nickel in total of 150+x oz.

Percentage pure = \frac{105+x}{150+x} =85%

Simplify to get

\frac{105+x}{150+x} =\frac{85}{100} \\\\Cross multiply:\\85(150+x) =100(105+x)\\12750+85x =10500+100x\\100x-85x = 12750-10500\\15x = 2250\\x = 150

Hence answer is 150 oz should be added.

6 0
1 year ago
Some of the steps in the derivation of the quadratic formula are shown. Step 3: –c + StartFraction b squared Over 4 a EndFractio
icang [17]

Answer:

The square root of terms separated by addition and subtraction cannot be calculated individually.

Step-by-step explanation:

8 0
1 year ago
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While analyzing the landing procedures of airplanes, George noted one plane at an altitude of 5,000 feet descending at a rate of
Vikki [24]

Answer:

C

Step-by-step explanation:


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1 year ago
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Wendy opens a bank account with money she has saved. After this initial deposit, Wendy then deposits the same amount of money ea
Bess [88]

If the table is:


x | y

------

1 | 76

------

2 | 92

---------

3 | 108

-----------

4 | 124



-------------------------------------------------------------------------------------------------------------------


Find the change inbetween each amount per week


92 - 76 = 16

108 - 92 = 16


etc.


This means that her initial deposit should be subtracting 16 from her first deposit.


76 is the amount first deposited


76 - 16 = 60


A) $60 should be your answer


hope this helps

8 0
1 year ago
Read 2 more answers
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