Ask question

Ask question

All categories

3 years ago

5

I need help, in 7-12. Please, someone??

1 answer:

ratelena [41]3 years ago

5 0

20/29
16/34
40/41
21/20
30/40
21/29

You might be interested in

Use the quadratic formula to solve the equation -3x2-x-3=0

Novosadov [1.4K]

Answer:

$x=\frac{1+\sqrt{35}i}{-6}\,\, and\,\, x=\frac{1-\sqrt{35}i}{-6}\\$

Step-by-step explanation:

the quadratic formula is:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

a= -2, b = -1 and c =-3

Putting values in the formula

$x=\frac{-(-1)\pm\sqrt{(-1)^2-4(-3)(-3)}}{2(-3)}\\x=\frac{1\pm\sqrt{-35}}{-6}\\x=\frac{1+\sqrt{-35}}{-6}\,\, and\,\, x=\frac{1-\sqrt{-35}}{-6}\\We\,\, know \,\,that \,\,\sqrt{-1} = i \\x=\frac{1+\sqrt{35}i}{-6}\,\, and\,\, x=\frac{1-\sqrt{35}i}{-6}\\$

So, $x=\frac{1+\sqrt{35}i}{-6}\,\, and\,\, x=\frac{1-\sqrt{35}i}{-6}\\$

5 0

3 years ago

Read 2 more answers

if the family has three pets, what is the theoretical probability that they have three dogs or three cats?

Rama09 [41]

I think that to answer this you need to calculate the total amount of probibilities divided by the number of pets which is 3

Hope this helped and have an amazing day :)

-yO mAmA

6 0

3 years ago

6. Myesha bought two and nine hundred five thousandths pounds of grapes at the store. How is this written in number form?

baherus [9]

Answer:

2.095

Step-by-step explanation:

ones. tenths hundredths thousandths

2 . 0 9 5

3 0

3 years ago

To find 12times 13 i double 13and halve 12and then multiply.

Sergio039 [100]

Or........
We already know 12 x 12 =144. So all you could do isis add 12 to 144 to get your complete answer. Which is:

12 x 13 = 156

6 0

3 years ago

PLEASE HELP <br> 3/4% of 120 equals

sammy [17]

Answer:

90

Step-by-step explanation:

so first do 120 divided by 4 is 30. Then multiply it by 3 to get 90.

7 0

3 years ago

Read 2 more answers