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alisha [4.7K]
2 years ago
5

Factor the trinomial completely 3x^2-5x-2

Mathematics
1 answer:
nignag [31]2 years ago
8 0

Answer:

(x − 2)×(3x+1)

Step-by-step explanation:

We can use this method:

\begin{aligned}3 x^{2}-5 x-2 &=3 x^{2}-5 x-x+x-2 \\\\&=3 x^{2}-6 x+x-2 \\\\&=3 x \cdot(x-2)+(x-2) \\\\&=(x-2)(3 x+1)\end{aligned}

All I did is Subtracting x then adding x which will not affect the result because  -x + x = 0

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One half times (four plus eight)
liraira [26]

Answer:

18

Step-by-step explanation:

one half times (four plus eight)

Writing mathematically

1½ ( 4+8)

Using BODMAS

we'll take the bracket first

1½ × 12

Change 1½ to improper fraction = 3/2

3/2 × 12 = 3×6

= 18

I hope this was helpful, please mark as brainliest

6 0
4 years ago
Read 2 more answers
1. A set of cards has 10 cards with stars, 10 cards with squares, and
Vesna [10]

Answer:

10 with squares it will give u the answer quicker in the area

5 0
3 years ago
A quadratic equation has exactly one real number solution. Which is the value of its discriminant? −1 0 1 2
lutik1710 [3]

<u>Answer:</u>

The correct answer option is 0.

<u>Step-by-step explanation:</u>

We know the quadratic formula that we use to find the roots of a quadratic equation:

\frac{-b+-\sqrt{b^2-4ac} } {2a}

The discriminant in this formula is the part underneath the square root symbol i.e. b^2-4ac.

For a quadratic equation to have exactly one real number solution, the discriminant must be zero.

As we can see the + and - sign appearing before the discriminant here so for one real number solution, these plus and minus signs need to be removed which can only happen if we have a value of zero.

3 0
3 years ago
Read 2 more answers
A bag has 5 green and 6 yellow tennis balls. If two are picked at random, find the probability that at least one of them is gree
Makovka662 [10]

Answer:

8/11.

Step-by-step explanation:

There are a total of 11 balls.

At least one of those picked is green means that 1 or 2 green balls are picked in the two trials.

Prob (First one picked is green)  = 5/11.

Prob( second one picked is green) = 4/10 = 2/5.

Therefore Prob ( Green then green) = 5/11 * 2/5 = 10/55 = 2/11.

The other possibilities  are Green then Yellow OR Yellow then Green.

The probabilities of these are worked out as above and come to

5/11 * 6/10 and 6/11 * 5/10

=  300/110 and  30/110

= 3/11 and 3/11.

Finally the Prob ( 2G OR G&Y OR Y&G) =  2/11 + 3/11 + 3/11

= 8/11.

I just realised there is an easier way to do this. Much less work.

The only other thing that can happen other than ' at least one green' is '2 yellows' so the required probability is

1 - prob(2 yellows)

= 1 - (6/11 * 5/10)

= 1 - 30 /110)

= 1 - 3/11

= 8/11.

But never mind. I hope the above is instructive  and helps you understand.

7 0
3 years ago
ANSWER FOR MARK AS BRAINLIEST!!! Please explain step by step on how to answer this math problem
Fiesta28 [93]
So you should divide 63 by 7 to get ten percent of the original price which would be 9. then multiply 9 by ten to get the full original price which would be ninety. 
hope this helps
sorry for spelling the numbers my zero key is broken

6 0
4 years ago
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