3 years ago

Does anyone know the answer to this??

Mathematics

1 answer:

Kipish [7]3 years ago

8 0

Answer:

very good

Step-by-step explanation:

very good

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Complete the square y=x^2+6x+8

andreyandreev [35.5K]

Answer:

y = (x+3)² - 1

Step-by-step explanation:

To complete the square take the middle term b and divide by 2. Then square the value.

Here b = 6.

So 6/2 = 3

3² = 9

Add 9 to both sides of the equation.

x² + 6x + 8 = 0

x² + 6x + 9 + 8 = 9

(x+3)² - 1 = y

8 0

3 years ago

What is the total value in cents of x quarters, y nickels, and z pennies?

lesya692 [45]

Answer:

25x + 5y + z cents

Step-by-step explanation:

1 quarter is worth 25 cents.

1 nickel is worth 5 cents.

1 penny is worth 1 cent.

Therefore, x quarters, y nickels and x pennies will be worth:

(x * 25) + (y * 5) + (z * 1)

= 25x + 5y + z cents

4 0

3 years ago

Help me please please

harina [27]

Answer:

$EH = \sqrt{HG^2+EG^2} = \sqrt{4^2+6^2} = \sqrt{16+36} = \sqrt{52} = 2\sqrt{13}$

EG² = GH*GF
EG² = 4*12
EG² = 48
EG = √48 = 4√3

3 0

3 years ago

15 · 20 = 12y ??<br> 180° = 74° + C ??

Vsevolod [243]

Answer:

answer is 90 degree I think so

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3 years ago

Find the quotient of 3/5 and 2/3

faltersainse [42]

Answer:

9/10

Step-by-step explanation:

Dividing by a fraction is the same as multiplying by that fraction's reciprocal (basically the fraction flipped).

$\frac{3}{5}$ ÷ $\frac{2}{3}$ = $\frac{3}{5} *\frac{3}{2} =\frac{3*3}{5*2} =\frac{9}{10}$

4 0

3 years ago

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