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Tanya [424]
3 years ago
10

Maathhhhh tingssssss

Mathematics
2 answers:
DIA [1.3K]3 years ago
7 0
Will you give me brainliest if I solve this?
matrenka [14]3 years ago
5 0

Answer:

not sure sorry

Step-by-step explanation:

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Please can someone help ?
skelet666 [1.2K]
Yes What do you need help with ?
7 0
3 years ago
What is the y value of the vertex of the function f(x)=-(x-3)(x+11)
AnnyKZ [126]

Answer:

49

Step-by-step explanation:

Because there is a minus sign infront of x-3, we can convert x-3 into the negative form:

- * x

- * -3

-x + 3

Which gives us:

(-x + 3)(x + 11)

Now expand the brackets with the formula:

(a + b)(c + d) = ac + ad + bc + bd

-x * x = -x²

-x * 11 = -11x

3 * x = 3x

3 * 11 = 33

-x² - 11x + 3x + 33

-x² - 8x + 33

The formula for finding the x coordinate of a vertex in a quadratic equation is:

x = \frac{-b}{2a}

Plug known variables in:

x = \frac{-(-8)}{2(-1)}

x = \frac{8}{-2}

x = -4

Now, to find the y coordinate, plug this variable back into the quadratic equation:

-x² - 8x + 33

y = -(-4^2) - (32) + 33\\y = -16 + 32 + 33\\\\

y = 49

So the y coordinate of the vertex is 49.

Hope this helps!

4 0
3 years ago
What is the probality of rolling a sum of 5 if two regular 6 -sides number cubes are rolled
Dmitry [639]

Each die has six numbers, the total number of possible combinations is 6 * 6 = 36


The combinations in which you can get a sum of 5 are:  1 &4, 2 & 3, 4 &1, 3 &2

There are 4 different combinations of getting a sum of 5.


The probability would be 4/36, which reduces to 1/9

8 0
3 years ago
Are these lines parallel explain?
nata0808 [166]

Answer: Yes

Step-by-step explanation: hope it helps

6 0
2 years ago
Read 2 more answers
What is the difference between (-5,-5)and (-9,2)
Alecsey [184]

Answer:

Well if you see the graph (-5, -5) is a total negative number that is in the 3 quadrant.

As for (-9,2) it goes to negative to positive.

Look at the graph and you will understand any questions ask me

hope this helps ☺

6 0
3 years ago
Read 2 more answers
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