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yawa3891 [41]
3 years ago
7

Use the calculator to graph the function y = x3 – 4x. Approximately on which interval is the function decreasing?

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
4 0

Answer:

C) (–1.16, 1.16)

Step-by-step explanation:

I know because I took the test

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A line passes through the points (p, a) and (p, –a) where p and a are real numbers. If p=0, what is the y-intercept? Explain you
atroni [7]
A line passes through the points (p, a) and (p, –a) where p and a are real numbers. If p=0, what is the y-intercept? Explain your reasoning. 

<span>p - as "x" never changes with the value of "y", so no matter what y is, x is always "p", so when y is 0, x = p </span>

<span>slope of the line </span>
<span>change in y over the change in x </span>
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<span>equation of the line </span>
<span>y = p </span>
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6 0
3 years ago
Read 2 more answers
The rate at which people learn about a secret is directly proportional to the number of people who know the secret. If two peopl
fenix001 [56]

Answer:

between 222 and 223 days

Step-by-step explanation:

This relation includes the point (0, 2).

A proportional relation must include the point (0, 0).

This is not proportional, but it may be linear.

Points: (0, 2), (2, 20)

y = mx + b

20 = (20 - 2)/(2 - 0) × 2 + b

20 = 18/2 × 2 + b

b = 2

y = 18x + 2

When 4000 people know, y = 4000.

y = 18x + 2

4000 = 18x + 2

3998 = 18x

x = 3998/18

x = 222.111...

Answer: between 222 and 223 days

8 0
2 years ago
Which of the following statements must be true based on the diagram below?(Diagram is not to scale.)FDEO EF is a segment bisecto
8_murik_8 [283]

From the diagram given;

ABCD is a quadrilateral;

Line |EF| bisects the line |AD| and line |CD|,

Thus, from the given options;

LINE |EF| is a segment bisector is the only correct option.

6 0
1 year ago
How much greater was Maiami’s annual rainfall than Albany’s Albany 46.92 miami61.05
Ilia_Sergeevich [38]

Answer:

52.94

Step-by-step explanation:

61.06

-46.92

=52.94

<em>just</em><em> </em><em>subtract</em><em> </em><em>them</em><em> </em><em>like</em><em> </em><em>the</em><em> </em><em>.</em><em> </em><em>isn't</em><em> </em><em>even</em><em> </em><em>there</em><em>.</em>

5 0
3 years ago
What are the roots of the quadratic equation 2x2+7x+4=0? Select all that apply.
skad [1K]

Answer:

option A and B

x=\frac{-7+\sqrt{17}} {4}

and

x=\frac{-7-\sqrt{17}} {4}

Step-by-step explanation:

we have

2x^2+7x+4=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

2x^2+7x+4=0

so

a=2\\b=7\\c=4

substitute in the formula

x=\frac{-7\pm\sqrt{7^{2}-4(2)(4)}} {2(2)}

x=\frac{-7\pm\sqrt{17}} {4}

so

x=\frac{-7+\sqrt{17}} {4}

and

x=\frac{-7-\sqrt{17}} {4}

7 0
3 years ago
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