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Eva8 [605]
2 years ago
9

Damell had 27 coins in his pocket. He lost some. Write an expression that shows how many coins Darell lost.

Mathematics
1 answer:
Salsk061 [2.6K]2 years ago
3 0

Answer:

esl b comafio   qe vasu  slair beniaen

Step-by-step explanation:

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What are the zeros of the function?
cluponka [151]

The function is:

f ( x ) = x² - x - 72

This is a quatdratic function. So we can find the zeroes of the function with the formula:

x 1/2 = ( - b +/- √(b² - 4 ac) ) / ( 2a )

And we have: a = 1, b = - 1 and c = - 72

x 1/2 = ( 1 +/- √((-1)² - 4 · 1· ( - 72 )) ) / 2

x 1/2 = ( 1 +/- √( 1 + 288 ) ) / 2

x 1/2 = ( 1 +/- √289 ) / 2

x 1/2 = ( 1 +/- 17 ) / 2

x 1 = ( 1 - 17 ) 2 = - 16 / 2 = - 8

x 2 = ( 1 + 17 ) / 2 = 18 / 2 = 9

Answer: The zeroes are - 8 and 9.

7 0
3 years ago
1. If a = -1 , the value of3a + 1 is ​
erastovalidia [21]

Answer:

f(a) = 3a + 1 \\ Now,\: a =  - 1 \\ f( - 1) = 3( - 1) + 1 \\ f( - 1) =  - 3 + 1 \\ \boxed{ f( - 1) =  - 2}

  • Therefore, <em><u>-2</u></em> is the right answer.
6 0
2 years ago
K=2LM + 2LN. Solve for L
AlladinOne [14]
L = 0 bcause it cancels itself out
4 0
2 years ago
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Can someone help me out with these problems and show work please !!
AVprozaik [17]

Answer:

13. 10a^4b²

14. -5y³ + 35y² - 10y

Step-by-step explanation:

Question 13:

(5a³b) (2ab) =

=10a^4b²

Question 14:

5y (-y² + 7y - 2) =

= -5y³ + 35y² - 10y

Hope this helps!

5 0
1 year ago
Diana sold $150.00 worth of products and earns a commission of 3.5%. How much did she earn in commission?
ioda

Answer:

$5.25

Step-by-step explanation:

Take $150.00 times 3.5% to get $5.25

150(.035) = 5.25

4 0
3 years ago
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