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arlik [135]
3 years ago
12

Please helpppp:( Thanks

Mathematics
1 answer:
arlik [135]3 years ago
8 0
She can simplify the 12 and the 3. 
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ASAP!! NEED HELP WITH ONLY 21 AND 23 !!!
Lesechka [4]
The picture is all laggy

Can you upload it one more time
5 0
3 years ago
Please help if you can!
marin [14]

9514 1404 393

Answer:

  y = 1/2x^2 +x -15/2

Step-by-step explanation:

The vertex is the point where the graph reaches is extreme: (-1, -8). The y-intercept is (0, -7.5). The x-intercepts are (-5, 0) and (3, 0).

When the quadratic is written in the form ...

  y = x^2 +bx +c

the value of b is the opposite of the sum of the x-intercepts. The value of c is their product. These facts would give ...

  y = x^2 -(-5 +3)x +(-5)(3) = x^2 +2x -15

The constant in this equation is -15, which is the value y has when x=0. Our actual y-intercept is half that, so the graph we see is this equation scaled by a factor of 1/2:

  y = 1/2x^2 +x -15/2

_____

<em>Alternate solution</em>

You can start with the vertex form.

  y = a(x -h)^2 +k . . . . . . . vertical scale factor 'a' and vertex (h, k)

On the graph, the vertical scale factor is the vertical difference between the low point (vertex) and the point that is 1 unit right or left. Here, that is ...

  -7.5 - (-8) = 0.5 = a

We've already said the vertex is (h, k) = (-1, -8), so the vertex form equation is ...

  y = 0.5(x +1)^2 -8

We know the square of a binomial is (a+b)^2 = a^2 +2ab +b^2, so we have ...

  y = 0.5(x^2 +2x +1) -8

  y = 0.5x^2 +x +0.5 -8 . . . . . eliminate parentheses

  y = 0.5x^2 +x -7.5

6 0
3 years ago
I mark as brainliest ​
nydimaria [60]

Answer:

2 quarts

Step-by-step explanation:

2 pints = 1 quart

so then 4 quart = 1 gallon so there are 2 quarts left.

4 0
3 years ago
7.005 in word form please help
Simora [160]
7.005 in word form is seven and five thousandths.
3 0
3 years ago
Read 2 more answers
When (8668/25) + (4141/9) - (5533/25) is computed and written as a mixed number in simplest form, what is the fractional part of
podryga [215]
This is the answer when written in mixed form if that's what the question meant.
585 \ \frac{23}{45}
8 0
3 years ago
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