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jek_recluse [69]
3 years ago
14

Rozwiąż równanie kwadratowe: 3/4 y^2 +9=y/2+(y-3)^2

Mathematics
1 answer:
lutik1710 [3]3 years ago
5 0
Najpierw rozszerz po prawej strony równania.

\dfrac34y^2+9=\dfrac y2+(y-3)^2\implies\dfrac34y^2+9=\dfrac y2+y^2-6y+9

Przenieść wszystko na jedną stronę i uproszcz.

\dfrac{y^2}4-\dfrac{11y}2=0

Rozkładaj lewą stronę na czynniki.

\dfrac14y(y-22)=0

Są dwa rozwiązania,

y=0\text{ i }y=22
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What is 12 less than 18
Evgen [1.6K]

Answer:

6

Step-by-step explanation:

We are looking for a new number which is 12 less than 18.

We will get the new number by subtracting 12 from 18.

We write it down as:

18-12=6

4 0
3 years ago
Read 2 more answers
Find the surface area of the composite figure. 2 in. 4 in. 7 in. 10 in. 2 in. 4 in. SA = [?] in.² 4 in. 0.7 If you'd like you ca
Novosadov [1.4K]

The surface area of the composite figure is; SA = 224 in.²

<h3>How to find the area of a Composite Figure?</h3>

From the composite figure attached, we can find the surface area of each of the rectangular/square external face seen as;

SA= 2(10 * 2) + 2(4 * 7) + 2(4 * 4) + 2(4 * 2) + (4 * 7) + (10 * 4) + (3 * 4)

SA = 40 + 56 + 32 + 16 + 28 + 40 + 12

SA = 224 in.²

Thus, we can conclude that the  surface area of the composite figure is;

SA = 224 in.²

Read more about Composite figure area at; brainly.com/question/21135654

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7 0
2 years ago
The table shows the time it takes a carpenter to build various pieces of furniture.
makkiz [27]

time taken to make bed = 15.75 hours

time taken to make a coffee table = 6.375 hours

time taken to make a dresser = 9.5 hours

Total time =

2(15.75) + 6.375 + 3(9.5)

= 66.375

66 \frac{3}{8}

5 0
3 years ago
Help me please Solve for r <br> d=rt
Vika [28.1K]

Watch closely.    I'll try to go slow.
Stop me if I go too fast, or if I do anything that you don't understand.

Ready ?


You said                               d      =  r t

Divide each side by ' t ' :    d / t  =  r

5 0
3 years ago
Find the equation that is equivalent to the quadratic equation shown. Explain why
zysi [14]
C - (x-3)^2=36

If we expand (x-3)^2=36:

(x-3)(x-3)=36
x^2-3x-3x+9=36
x^2-6x+9=36

Then subtract 36

x^2-6x-27=0
7 0
3 years ago
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