1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex
3 years ago
11

What is the value of f(−1) when f(x) = 2x + 2 f(−1)=

Mathematics
1 answer:
Elza [17]3 years ago
5 0
F(-1)=2*(-1)+2
f(-1)=2-2
f(-1)=0
You might be interested in
What are the first 5 multiples of 150
anzhelika [568]

Answer:

150, 300, 450, 600, 750

Step-by-step explanation:

3 0
3 years ago
B. Find the value of X. Show your work, I’m not sure how to do this
Eddi Din [679]

Answer:

63°

Step-by-step explanation:

The sum of all interior angles of a triangle = 180°

Therefore:

x + 96° + 21° = 180°

x + 117 = 180

Subtract 117 from each side

x = 180 - 117

x = 63°

5 0
3 years ago
The picture is incorrect but what is the correct value of x
Monica [59]
Start with -3x + 2 = -7
Subtract 2 from each side
-3x = -9
Divide each side by -3
x = 3
6 0
3 years ago
Which equation is true when the value of x is -12
Sophie [7]

Answer:

Which equation is true when the value of x is -12    HERE YOU GO!!

Step-by-step explanation:

tricky ... let's see ...

I notice that if we subtract xy from both sides we get

7x + xy - xy = xy - xy + 21

then

7x = 21

and

x = 21/7 = 3

so there is only one value of x that satisfies the equation

x = 3

Going back to the original equation we see that any value of y will satisfy the original equation

we can see this by rearranging things:

7x + xy - xy = 21

here, I have performed the subtraction of xy on the right side as above, but have left the left side undone

(so we don't lose the presence of y)

Note that the above can also be written as

7x + (x - x)y = 21

or

7x + 0y =21

now, since anything times zero equals zero,

y may be any number.

Let's summarize:

1) x = 3

2) y = anything

looking back at the original question;

1) the equation is true for all ordered pairs

FALSE (only one x works, not all x)

2) there are no x and y pairs for which the equation is true.

FALSE (x=3, y=anything) makes it true, i.e. (3,1)  

3) For each value of x, there is one and only one value of y that makes the equation true,

FALSE for each value of x, for the one value of x, x=3, y can be any number, which is an infinite number, not one

4) for each value of y, there is one and only on value of x that makes the equation true.

TRUE!! for all the infinite values of y you may pick, there is one and only one x you may pick, x = 3

ANSWER: STATEMENT 4 is CORRECT (TRUE)

3 0
3 years ago
Algebra 2 Math question Grade 11
Paha777 [63]

Answer:

\displaystyle y=\frac{4}{5}x+\frac{13}{5}

Step-by-step explanation:

The equation of the line in slope-intercept form is:

y=mx+b

Where m the slope of the line and b the y-intercept.

When two points are given, it's convenient to calculate the slope first.

Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

\displaystyle m=\frac{y_2-y_1}{x_2-x_1}

The points are (3,5) and (-2,1):

\displaystyle m=\frac{1-5}{-2-3}=\frac{4}{5}

The equation is now:

\displaystyle y=\frac{4}{5}x+b

To calculate b, we use any of the given points and solve for b. Use (3,5):

\displaystyle 5=\frac{4}{5}3+b

Operate:

\displaystyle 5=\frac{12}{5}+b

Solve:

\displaystyle b=5-\frac{12}{5}=\frac{13}{5}

The required equation of the line is:

\boxed{\displaystyle y=\frac{4}{5}x+\frac{13}{5}}

3 0
3 years ago
Other questions:
  • Could someone help me to find I in simple interest P=2,000 R=0.15 and T=2 in years could someone explain how to do simple intere
    6·1 answer
  • What is the ratio of melvin's weight to the total weight of the two boys?
    15·1 answer
  • How many 5-a-side football teams can you make from 31 children ?
    12·1 answer
  • Solve for x<br> 4x-17=23
    8·2 answers
  • Find the next four terms in the arithmetic sequence.
    13·2 answers
  • The very busy Freshman class is selling tickets for an upcoming field hockey game. The class sells 20 more student tickets than
    10·1 answer
  • Please explain in depth​
    7·1 answer
  • What is the slope and y-intercept of the function shown in the table? <br> X: 1,4,7 <br> Y:6,12,18
    7·1 answer
  • 8.
    5·1 answer
  • 4(d+2)-2(d+4) not sure why I keep getting it wrong
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!