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Elanso [62]
3 years ago
13

3x^2+ 12x+ 81= 15 complete the square

Mathematics
1 answer:
ioda3 years ago
8 0

Answer:

x=−2±3i√2

Step-by-step explanation:

Use the formula ( b/2 )^2 in order to create a new term. Solve for x by using this term to complete the square.

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The inequality question pls. my teacher hasn’t covered it in class yet but assigned this
xxMikexx [17]

Answer:

x>5

Step-by-step explanation:

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3 years ago
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Travka [436]

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3 years ago
Com o auxílio de uma calculadora, a porcentagem total se aplicados os aumentos sucessivos de 5% e 6% é de: * a) 11,3% b) 0,113%
zzz [600]

Answer:

A

Step-by-step explanation:

Deixe o valor inicial ser x.

Um aumento de 5% será x + 5/100 (x)

x + 0,05 (x) = x + 0,05x = x (1+ 0,05) = 1,05x

Um aumento de 6% para isso será

1,05x + 6/100 (1,05x)

1,05x + 0,06 (1,05x)

1,05x + 0,063x = 1.113x

Portanto, passamos de x para 1.113x

Isso é e aumento de; (1,113x-x) / x * 100% =

0,113x / x * 100% = 0,113 * 100% = 11,3%

8 0
3 years ago
Evaluate = 2/3 (n-6) p<br><br> when n=10 and p=1/2
garik1379 [7]

Answer:

1.33

Step-by-step explanation:

7 0
3 years ago
ON THE SAME STUDY GUIDE! PLEASE HELP
Lera25 [3.4K]

Answer:

x = 4 ; y = 8

Step-by-step explanation:

we can use a system of two equation

x+1 = y-3

y-5 = 2x-5

we can find x in the first equation

x = y -4

we can now substitute x with this value in the second equation

y-5 = 2(y-4)-5

y = 2y-8

y = 8

we can now find x

x = 8-4 = 4

verify

2(4)-5 = 3

8-5 = 3

8-3 = 5

4 + 1 = 5

3 0
3 years ago
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