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stepladder [879]
3 years ago
5

Find the domain of the function f(x) = – 1x^2 – 2x – 1

Mathematics
1 answer:
navik [9.2K]3 years ago
7 0

Answer:

All real numbers.

Step-by-step explanation:

Since this is a quadratic function, that means the domain is all real numbers.

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MrRa [10]

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Step-by-step explanation:

4 0
1 year ago
Of 450 college students, 110 are enrolled in math, 205 are enrolled in English, and 50 are enrolled in both. If a student is sel
likoan [24]

Answer:

Step-by-step explanation:

Given that Of 450 college students, 110 are enrolled in math, 205 are enrolled in English, and 50 are enrolled in both. If a student is selected at random

the probability

(a) The student is enrolled in mathematics=\frac{110}{450} =0.244\\

(b) The student is enrolled in English.=\frac{205}{450} =0.456\\

(c) The student is enrolled in both.=\frac{50}{450} =0.111\\

(d) The student is enrolled in mathematics or English.=\frac{110+205-50}{450} =0.589\\

(e) The student is enrolled in English but not in mathematics.

=\frac{205-50}{450} =0.344\\

(f) The student is not enrolled in English or is enrolled in mathematics.

=\frac{450-205+110}{450} =0.7889\\

8 0
3 years ago
Simplify each of the expression (x-7)(x+3)
emmainna [20.7K]

Answer:

x² - 10x + 21

Step-by-step explanation:

yw

4 0
1 year ago
Who is farthest from the school
postnew [5]

Using the law of cosines:

The grocery store to the school:

Distance = √(7^2 + 10^2 - 2*7*10*cos(100)

Distance = 13.16 miles


The movie store to the school:

Distance = √(7^2 + 10^2 - 2*7*10*cos(120)

Distance = 14.80 miles


The friend is further away.

7 0
3 years ago
What is the value of the n in this equation n + 16 = 21​
Verdich [7]

Answer:

n = 5

Step-by-step explanation:

Given

n + 16 = 21 ( isolate n by subtracting 16 from both sides )

n = 5

7 0
2 years ago
Read 2 more answers
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