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miv72 [106K]
2 years ago
5

Need help on khan NOW! question is on picture. will report link and mark brainliest if right

Mathematics
1 answer:
Genrish500 [490]2 years ago
3 0
Answer: R= 1

Explanation: no matter how you do it you still get 1 bc its x divided by y which is 1
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Ann and Betty together have $60. Ann has $9 more than twice Betty's amount. How much money does each have?
Ymorist [56]
First and mainly keep that 9 one side,
There are 2 people involved Ann and Betty, Then divide the TOTAL AMOUNT BY THE NUMBER OF PEOPLE.
· Then it will look like $60÷2= $30 per person.
In this case everyone has equal amount of money, but the question say Ann has $9 more than Betty's. so, Ann≈ $30 +$9= $39.
                                                       Betty≈ $30-$9= $21
         Because loses money because Ann has more,                        
                                      TOTAL=Ann+Betty
                                       $60= $39+$21
7 0
3 years ago
53664 times 84 show work
zalisa [80]
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8 0
3 years ago
The function f(x)=70n -400 models the profit of the instructor of a guitar class per month, where n is the number of students en
suter [353]
Given:
f(x) = 70n - 400   : equation for monthly profit.
n = number of students enrolled in the guitar class.

70 refers to the amount charged per student.
400 is the fixed expense made by the instructor.

For the instructor to have a profit, the product of 70n must be more than 400.

400/70 = 5.7 or 6

There must be at least 6 students enrolled in class for the instructor to generate profit.

f(x) = 70(6) - 400 = 420 - 400 = 20

1000 = 70n - 400
1000 + 400 = 70n
1400 = 70n
1400/70 = n
20 = n

There must be 20 students enrolled in class for the instructor to earn 1000 in profit.

1000 = 70(20) - 400
1000 = 1400 - 400
1000 = 1000

3 0
3 years ago
How many terms will the following expression have once it is simplified?
MA_775_DIABLO [31]

Answer:

B


Step-by-step explanation:

<em>Let's multiply this out and combine like terms:</em>

3x(x+1)+x\\=3x^2+3x+x\\=3x^2+4x


So there are 2 terms.

Answer choice B is right.

5 0
3 years ago
Read 2 more answers
Total deviationequals​_______ deviationplus​_______ deviation choose the correct answer below.
Tom [10]
<span>The correct answer is (a) total deviation equals unexplained deviation plus explained deviation.

These deviations are commonly encountered or studied in statistics, and sometimes in regression analysis.</span>
7 0
3 years ago
Read 2 more answers
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