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serg [7]
2 years ago
13

In macroeconomics, the economy can best be understood through the use of

Mathematics
1 answer:
oksano4ka [1.4K]2 years ago
6 0

Answer:

models

Step-by-step explanation:

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In f(x) = 2x2 − 8x − 10, the y-intercept is ? at ? and the x-intercepts are (-1, 0) and ? .
IgorLugansk [536]
<h2>1.  y-intercept</h2>

\boxed{(0,-10)}

The quadratic function f(x)=2x^22-8x-10 represents a parabola. In fact, the graph of a quadratic function is a special type of U-shaped curve called a parabola. To find the y intercept, we set x=0 as follows:

f(x)=2x^2-8x-10 \\ \\ If \ x=0 \rightarrow f(0)=-10 \\ \\ Then \ y-intercept: \\ \\ (0,-10)

<h2>2.  x-intercepts</h2>

\boxed{(-1,0) \ and \ (5,0)}

To find the other x-intercept, we must set y=0 as follows:

f(x)=2x^2-8x-10 \\ \\ If \ y=0 \rightarrow 2x^2-8x-10=0 \\ \\ Using \ the \ quadratic \ formula: \\ \\ x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ \therefore x=\frac{-(-8) \pm \sqrt{(-b)^2-4(2)(-10)}}{2(2)} \\ \\ \therefore x_{1}=-1 \ and \ x_{2}=5

Therefore, the other x-intercept is (5,0). You can see both the y-intercept and the x-intercepts in the figure below.

8 0
3 years ago
Five point six times four point eight
LenaWriter [7]

Answer:

26.88

Step-by-step explanation:start eight times four is 32

and than eight times six is 48 than add a zero and do four times six is 24

and four times five is twenty add it up and line up the decimal points

hope i helped !!

3 0
3 years ago
What is 2/10 + 5/100 =
Anestetic [448]
That would equal 1/4:)
hope i helped chu out
7 0
3 years ago
Read 2 more answers
Solve – 4y – 10 = 4(y - 3)
Snezhnost [94]

Answer:

y= 1/4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
I have 756 cards and i sell 153 what is the percent decrease?
valina [46]
-400.68 glad I could help!
6 0
2 years ago
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