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Debora [2.8K]
3 years ago
14

More than one unknown in a word problem can be represented in terms of the same variable assigned to first unknown. true of fals

e
Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
6 0
This is clearly false as it will just mess up the question.
Hitman42 [59]3 years ago
5 0

Answer:

True

Step-by-step explanation:

When you have a word problem with more than one unknown data, you can represent these unknowns in terms of the same variable assigned to the first unknown (it depends on the problem).

For example, if the word problem tells us that  Alex has 3 more years than Jennifer and that Ben has twice the age of Jennifer plus 4, you can represent all these unknowns (the three ages) in terms of the variable assigned to Jennifer's age. Let's see how this would be:

If you name x the age of Jennifer, then Alex's age would be x + 3 (3 more years than Jennifer), and Ben's age would be 2x + 4 (twice the age of Jennifer plus 4).

You can do this in some word problems to simplify the process of finding your unknowns because you'd be working with just one variable instead of many of them.

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Breanna works in the mall and her hours increase during busy shopping times of the year. Breanna has a plan to save $25 each wee
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The math I used is probably not the quickest way, but for me, the easiest.
25*5=125  25+20=45  45*7=315  125+315=440  25*4=100  440+100=540  5+7+4=16
B is your answer.
5 0
3 years ago
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PLEASE HELP!!!!!!!!!!!
vaieri [72.5K]

Answer and Step-by-step explanation:

If my calculations are correct,

A. 17b = w  

B. 867 = w

C. 3 bottles for 51 fluid ounces of water

For B and C, just plug in the values.

For A, it was 17 ounces for every bottle (b), so that's why it is multiplied together. This is then equal to w, the total volume of water in fluid ounces.

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2 years ago
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Wich expression is equivalent to 7/12<br><br>a. 12 ÷ 7<br>b. 7×12<br>c. 7÷12<br>d.12×7<br>​
Alla [95]
C. a fraction is the same as dividing
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3 years ago
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If the sales representative is able to get 20% of the prospective customers to subscribe, the maximum expected number of subscriptions per week is 34. If the sales representative earns $3 per subscription in addition to daily wages, the minimum expected value of the extra income per week is $94.20.

For the first answer, refer to the attached solution. Add the data each week, then multiply the sum by 20% to find out which has the maximum expected number of subscriptions.

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3 0
3 years ago
Determine the value of the variable in the product of powers.
aleksandrvk [35]

Answer:

  • <u><em>1. x = - 3</em></u>
  • <u><em>2. y = -9</em></u>
  • <u><em>3. n = 0</em></u>

<u><em></em></u>

Explanation:

The expressions are garbled. The correct expressions to determine the product of powers are:

1. What is the value of x in the product of powers  5^5\cdot 5^x=5^2 ?

  • x =

2. What is the value of y in the product of p^{-3}\cdot p^{-6}=p^y ?

  • y =

3. What is the value of n in th product of  9^2\cdot 9^{-7}\cdot 9^n=9^{-5} ?

  • n =

<h2>Solutions</h2>

<u />

<u>1. What is the value of x in the product of powers </u>5^5\cdot 5^x=5^2<u> ?</u>

Apply the rule of the <em>product of powers with the same base</em> to the left side of the equality.

The product of two powers with the same base is the base raised to the sum of the exponent:

       5^5\cdot5^x=5^{(5+x)}

Now the power on the left side has the same base as the power on the right side, so the exponents are the same:

  • 5 + x = 2
  • x = 2 - 5
  • x = - 3

<u />

<u>2. What is the value of y in the product of </u>p^{-3}\cdot p^{-6}=p^y<u> ?</u>

Again, the product of the two powers on the left side is equal to the common base raised to the sum of the exponents:

On the left side, you get:

         p^{-3}\cdot p^{-6}=p^{(-3-6)}=p^{-9}

Then,

          p^{-9}=p^y\\\\-9=y\\\\y=-9

3. What is the value of n in th product of  9^2\cdot 9^{-7}\cdot 9^n=9^{-5} ?

Same rule:

Left side:

         

       9^2\cdot 9^{-7}\cdot 9^n=9^{(2-7+n)}=9^{(-5+n)}

Left side equal to right side:

         9^{(-5+n)}=9^{-5}\\\\-5+n=-5\\\\n=-5+5\\\\n=0

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3 years ago
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