3 years ago

Alex has had 15 spelling quizzes. He has scored 80, 85, 80, 75, 90, 95, 85, 90, 95,

1 answer:

Alina [70]3 years ago

7 0

The answer to this is the second box, I hope this helped you

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Ksenya-84 [330]

$\frac{4}{9}b^2 + 0.4bc + 0.09c^2 = \frac{4}{9}b^2 + \frac{4}{10}bc + \frac{9}{100}c^2 = (\frac{2}{3}b + \frac{3}{10}c)^2$

7 0

3 years ago

-BARSIC- [3]

Would be x^2-5-6 so the 0s would be (x-6)(x+1) so 6 and -1

7 0

2 years ago

natulia [17]

Answer:

4y²-1/4 is the required answer

Step-by-step explanation:

$(2y - \frac{1 }{2} )(2y + \frac{1}{2} ) \\ using \: formula \: {x}^{2} - y {}^{2} = (x - y)(x + y) \\ 4y {}^{2} - \frac{1}{4}$

4 0

1 year ago

12345 [234]

Answer:

Step-by-step explanation:

7 0

2 years ago

hichkok12 [17]

Answer:

x=3

Step-by-step explanation:

0=(x+2)^2-25

+25 +25

25=(x+2)^2

Square root both sides to get:

5=x+2

-2 -2

3=x

8 0

1 year ago