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2 years ago

14

3x(x-2)-x^2+4=0 Help

1 answer:

antoniya [11.8K]2 years ago

3 0

Answer:

x=2,1 solving with quadratic formula

Step-by-step explanation:

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The Ratio of boys to girls in Martin Middle school is 3/2. what is the percent of the entire school is boys?

Llana [10]

3+2=5

5x=100%

x=20 (divide)

20*3=60

60% are boys, 40% are girls

6 0

2 years ago

Yea...we most def ain't learn this in class

larisa86 [58]

Answer:

F. 300,000

Step-by-step explanation:

logically, it is decreasing by 1.

7 0

2 years ago

-2 + 3n< 28 and 6n - 7 > 17

sveta [45]

Answer:

N< 10 and N>4

Step-by-step explanation:

-2+3n< 28. =. 3n < 30. =. N < 10

+2. +2 ÷3. ÷3

6n - 7 > 17. =. 6n > 24. =. N > 4

+7. +7. ÷ 6. ÷ 6

8 0

2 years ago

If you are solving y 2+2y=48 by completing the square, the next line would be

snow_tiger [21]

For this case we have the following equation:

$y ^ 2 + 2y = 48$

By completing squares we have:

Step 1:

Add $(\frac {b} {2}) ^ 2$ on both sides:

$y ^ 2 + 2y + 1 = 48 + 1$

Step 2:

We rewrite the equation:

$(y + 1) ^ 2 = 49$

Step 3:

We solve the equation:

$y = \pm \sqrt {49} -1\\y = \pm7-1$

Solutions:

$y = 6\\y = -8$

Answer:

the next line would be:

$y ^ 2 + 2y + 1 = 48 + 1$

6 0

2 years ago

Read 2 more answers

F(x)=-x^(2)+6 find(-1)

kap26 [50]

Answer:

Step-by-step explanation:

When,x= -1

Now,

f(-1)=-(-1)^2+6

=1+6

=7

Hope it helped you.

7 0

1 year ago