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Elden [556K]
3 years ago
6

Find the zeros of f(x) = −x3 − 2x2 + 7x − 4. Then describe the behavior of the graph of f at each zero. A. 4, −1; As x → −∞, f →

−∞. When −1 < x < 4, f < 0. At x = 4, f is tangent to the x-axis, so when x > 1, f → ∞. B. −4, 1; As x → −∞, f → −∞. When −4 < x < 1, f > 0. At x = 1, f is tangent to the x-axis, so when x > 1, f → −∞. C. 4, −1; As x → −∞, f → ∞. When −1 < x < 4, f > 0. At x = 4, f is tangent to the x-axis, so when x > 1, f → ∞. D. −4, 1; As x → −∞, f → ∞. When −4 < x < 1, f < 0. At x = 1, f is tangent to the x-axis, so when x > 1, f → −∞.
Mathematics
1 answer:
dybincka [34]3 years ago
3 0
Wait what is this lol??.
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Please help asap! really important!!
Alexxandr [17]

Answer:

4th graph

6th graph

3rd graph

Step-by-step explanation:

Linear = y = x + 3

it is 4th graph

when you substitute x = 0 y is 3

and when y = 0 x is -3

Quadratic = y = 3x^2

It is 6th graph

for both positive and negative values of x, y is rapidly increasing

Exponential = y = 3^x

it is 3rd graph

for x = 0 y value is 1 because 3^0 = 1

for positive values of x, y is exponentially rising

for negative values of x it is nearly almost touches zero

6 0
2 years ago
Good afternoon, please help me with this question and if u get it correct ill give u the brainlest
Luden [163]

Answer:

3/5

Step-by-step explanation:

Hope that this helped :)

3 0
2 years ago
Two Social Security numbers (see Exercise 8.12) match zeros if a digit of one number is zero iff the corresponding digit of the
Roman55 [17]

Answer:

Proved

Step-by-step explanation:

From the given parameters, we have:

n = 9 i.e. the length of each security numbers

r = 2 i.e. 2 security numbers

Required

In 513 security numbers, 2 must have matching zeros

To do this, we make use of Pigeonhole principle.

First, we calculate the number of all security numbers not having matching zeros.

Each of the 9 digits can be selected in 2 ways.

2 ways implies that each digit is either 0 or not

So, total selection is:

Total = 2^9

Total = 512

Apply Pigeonhole principle

The principle states that: suppose there are n items in m containers, where n>m, then there is at least one container that contains more than 1 item.

This means that if there are 512 security number without matching zeros, then there is 1 (i.e. 512 + 1) with matching zeros.

512 + 1 = 513

8 0
3 years ago
Can someone help me pls!!
nordsb [41]

Answer:

a=1

Step-by-step explanation:

A parallelogram is a quadrilateral with two pairs of parallel sides. Opposite sides of a parallelogram are equal.

Therefore, set any two opposite sides equal to each other to solve for a:

a+3=2a+2,\\\\3=a+2,\\a=\boxed{1}

7 0
3 years ago
Read 2 more answers
Hurry please , number six says 2x^2+7x-8x^
lapo4ka [179]

Answer:

− 8 x ^5 + 2 x ^2 + 7 x

Step-by-step explanation:

I couldn't see the last number but I believe it was a 5

7 0
3 years ago
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