All categories

3 years ago

If f(x) = x2 + 2x – 1, find f(1). Answer:

Mathematics

2 answers:

Alina [70]3 years ago

7 0

Answer:

f(1)= (1)^2+ 2(1) -1

= 2

Naya [18.7K]3 years ago

3 0

Answer:

f (x) = 2

Step-by-step explanation:

f (x) =

${x}^{2} + 2x - 1$

now,

f(1) =

=》

$1 {}^{2} + (2 \times 1) - 1$

=》

$1 + 2 - 1$

=》

$2$

You might be interested in

Skyler goes to a school which has 100 students in it. She asks 40 random students whether they like the new 8.30 am start to the

dybincka [34]

Answer:

75 students

Step-by-step explanation:

first write a ratio of the students asked to students dislike

40:30, 40 to 30, or 40/30

now simplify the ratio

4/3

now she asked 40 students, so we have to find out the unit rate

so we have to flip the fraction to 3/4 and then divided the top and bottom by 4

0.75/1

now multiply the top and bottom by 100

75/100

75 students

8 0

2 years ago

Write the equation of the line for a line that passes through (4, 4) and (1, -2).

pshichka [43]

$(\stackrel{x_1}{4}~,~\stackrel{y_1}{4})\qquad (\stackrel{x_2}{1}~,~\stackrel{y_2}{-2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-2}-\stackrel{y1}{4}}}{\underset{run} {\underset{x_2}{1}-\underset{x_1}{4}}}\implies \cfrac{-6}{-3}\implies 2 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{4}=\stackrel{m}{2}(x-\stackrel{x_1}{4}) \\\\\\ y-4=2x-8\implies y=2x-4$

6 0

2 years ago

Read 2 more answers

Match the verbal expression (term) with its algebraic expression (definition).

UkoKoshka [18]

The matching of definitions and terms are done below.

Some number increased by two ⇒ b + 2
A variable decreased by two ⇒ x – 2
Product of an unknown value and two ⇒ 2z
Quotient of some number and two ⇒ a ÷ 2
An unknown value squared ⇒ y²

<h3>What is Algebra?</h3>

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

Match the verbal expression (term) with its algebraic expression (definition).

Some number increased by two ⇒ b + 2

A variable decreased by two ⇒ x – 2

Product of an unknown value and two ⇒ 2z

Quotient of some number and two ⇒ a ÷ 2

An unknown value squared ⇒ y²

More about the Algebra link is given below.

brainly.com/question/953809

#SPJ1

6 0

1 year ago

Each day you read 15 pages in your textbook. Use the drop-down menu to choose the correct equation that represents the total num

zysi [14]

Answer: C. y=15x

Step-by-step explanation:

i did the quiz !

GIVE ME A THANK YOU :)

5 0

2 years ago

Read 2 more answers

Factor completely, the expression: 2x^3-2x^2-12x

muminat

$2x^3-2x^2-12x=2x(x^2-x-6)=(*)\\\\------------------------------\\x^2-x-6\\\\a=1;\ b=-1;\ c=-6\\\\\Delta=(-1)^2-4\cdot1\cdot(-6)=1+24=25\\\\\sqrt\Delta=\sqrt{25}=5\\\\x_1=\frac{1-5}{2\cdot1}=\frac{-4}{2}=-2;\ x_2=\frac{1+5}{2\cdot1}=\frac{6}{2}=3\\\\x^2-x-6=(x+2)(x-3)\\\\------------------------------\\\\(*)=2x(x+2)(x-3)$

8 0

2 years ago