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Zolol [24]
3 years ago
5

Smart ppl i rly rly rly need your help on this please ! i dont get it!

Mathematics
1 answer:
elixir [45]3 years ago
3 0

Answer:

The first one is -2x^2 - 21x + 4, the second one is -15 (I think, not 100% sure), the third one is 4xyz + 3yz + 5x - 4 (also not 100% on this one)

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HELP ME PLZ ASAPPPPPP
boyakko [2]

Answer:

(x,y) =(-4,-3) --- Vertex

x = -4 --- Axis of symmetry

Step-by-step explanation:

Given

y = -6(x + 4)^2 - 3

Solving (a): The vertex

For an equation written in

y = a(x - h)^2 + k

The vertex is:

(x,y) = (h,k)

By comparison:

y = a(x - h)^2 + k  and y = -6(x + 4)^2 - 3

-h =4       k = -3

h =-4         k = -3  

So, the vertex is:

(x,y) =(-4,-3)

Solving (b): The axis of symmetry

For an equation written in

y = a(x - h)^2 + k

The axis of symmetry is:

x = h

In (a):

h =-4

So:

x = -4

5 0
2 years ago
Solve for n.<br> 7 + 2n<br> ||<br> =<br> submit
Lunna [17]

Answer:

2

Step-by-step explanation:

7+2n = 11

2n = 11-7

2n = 4

n = 4/2

therefore n = 2

8 0
2 years ago
What is the sum of 21 and 5 times a number f is 61
sukhopar [10]

Answer:

Answer is below

Step-by-step explanation:

21 + 5f = 61       Turn the words into an equation

-21        - 21       Subtract 21 from both sides

5f = 40              Divide both sides by 5

f = 8

If this answer is correct, please make me Brainliest!

5 0
3 years ago
Read 2 more answers
What is the simplified form of the expression? 2√18-5√32
Sloan [31]
The answer would be -14<span>√2 or the decimal form is 19.79898987...</span>
7 0
3 years ago
HELPPPPP FASTTTTTTTTTT PLEAAAAASE
emmainna [20.7K]

Answer: Third option.

Step-by-step explanation:

To solve this exercise it is important to remember the following:

1) By definition, equivalent expression have the same value, but they look different.

2) The multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-

Then, given the following expression provided in the exercise:

=(8.4x+2.9)+(-3.7x+5)

You need to distribute the postive sign:

8.4x+2.9-3.7x+5

And finally, you must add the like terms:

=8.4x-3.7x+2.9+5=4.7x+7.9

As you can notice, the expression obtained matches with the expression shown in the third option.

6 0
3 years ago
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