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Ipatiy [6.2K]
3 years ago
14

Express the product of x+1 and x+8 in standard quadratic form.

Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
8 0
(x+1)*(x+8) = x^2 + 9x + 8
bulgar [2K]3 years ago
7 0
(x + 1)(x + 8)

x(x + 8) + 1(x + 8)

x*x + 8*x + 1*x + 1*8

x² + 8x + x + 8

x² + 9x + 8

Hope this explains it.
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Which statement describes the effect on the parabola y = x2 - 1 when it is changed to y = x2 +6?
zlopas [31]

Initial:

y=x^2-1

Changed to:

y=x^2+6

As you can see the change is: from -1 to +6.

In a equation as follow:

y=x^2+k

The k is a transformation that moves up or down the graph of the function. If k is changed to a less value the graph moves down, If k is changed to a greather number the graph moves up.

In this case the graph moves up

To find the number of units the graph moves find the difference betwwen values of k:

6-(-1)=7

Then, the parabola y=x²-1 is moved 7 units up when it is changed to y=x²+6

4 0
1 year ago
What are the factors of 30 that have a sum of -11
Fed [463]

Answer:

Why is 42 the sum of all factors of 30, excluding 30? The factors of the number 30 are: 1, 2, 3, 5, 6, 10, 15, 30.

Step-by-step explanation:

8 0
3 years ago
A doctor told a patient to drink 1.6 liters of water everyday. About how many liters should the patient drink in 14 days?
inn [45]
He would have drank 22.4 litres of water in 14 days
7 0
3 years ago
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Given the parabola whose equation is , find the focus and determine if the parabola opens up or down.
ziro4ka [17]
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y = ax {}^{2}  + bx + c
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If a<0, then the parabola opens down.
The coordinates of focus are:
( -  \frac{b}{2a}  \:  \:   \frac{1 - b {}^{2}  + 4ac}{4a} )
4 0
3 years ago
Can someone help me I can't remember how to do ratios
omeli [17]

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35 divided by 5 = 7

7 casseroles feed 35 people

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5 0
3 years ago
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