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
lakkis [162]
3 years ago
5

If f(x) = 5x + 40, what is f(x) when x = -5?

Mathematics
1 answer:
Natasha2012 [34]3 years ago
4 0

f(x)=5 (-5)+40

f(x)= -25+40

f(x)= 15

You might be interested in
Please help me in this questions....​
Ivahew [28]

Part (i)

I'm going to use the notation T(n) instead of T_n

To find the first term, we plug in n = 1

T(n) = 2 - 3n

T(1) = 2 - 3(1)

T(1) = -1

The first term is -1

Repeat for n = 2 to find the second term

T(n) = 2 - 3n

T(2) = 2 - 3(2)

T(2) = -4

The second term is -4

<h3>Answers: -1, -4</h3>

==============================================

Part (ii)

Plug in T(n) = -61 and solve for n

T(n) = 2 - 3n

-61 = 2 - 3n

-61-2 = -3n

-63 = -3n

-3n = -63

n = -63/(-3)

n = 21

Note that plugging in n = 21 leads to T(21) = -61, similar to how we computed the items back in part (i).

<h3>Answer:  21st term</h3>

===============================================

Part (iii)

We're given that T(n) = 2 - 3n

Let's compute T(2n). We do so by replacing every copy of n with 2n like so

T(n) = 2 - 3n

T(2n) = 2 - 3(2n)

T(2n) = 2 - 6n

Now subtract T(2n) from T(n)

T(n) - T(2n) = (2-3n) - (2-6n)

T(n) - T(2n) = 2-3n - 2+6n

T(n) - T(2n) = 3n

Then set this equal to 24 and solve for n

T(n) - T(2n) = 24

3n = 24

n = 24/3

n = 8

This means 2n = 2*8 = 16. So subtracting T(8) - T(16) will get us 24.

<h3>Answer: 8</h3>
4 0
3 years ago
6. Select all values of x for which f(x) = g(x).<br> A.0<br> B. 1<br> C.-3<br> D.4
Sati [7]
The answer would be A
6 0
3 years ago
72.1 divided by 7<br> Estimate the quotient
Ulleksa [173]
Do 72 divided by 7 to get your answer
4 0
3 years ago
Read 2 more answers
What is the correct factorization of x² - 11x + 18?
boyakko [2]
C because I did the math on an app so it’s right
8 0
3 years ago
Wayne bought blueberries. He uses 3/8 of the blueberries to make blueberry​ bread, 1/6 of the blueberries to make​ pancakes, and
o-na [289]
Should be 72 ounces, as he used 23/24 of the blueberries and 69/72 = 23/24.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Please help asap. 50 pts
    12·1 answer
  • How do I compare and order the following numbers 5.2, -5.6 repeating, 3 9/10, and the square root of 21?
    14·1 answer
  • 9=1.5z how do you solve it I need to know
    6·2 answers
  • Find the equation of the line in slope-intercept form that passes through the following point with the given slope. Simplify you
    7·1 answer
  • Is this a function please help I’m failing
    6·1 answer
  • The point (-3, 8) is translated using the rule (x + 5, y - 7). The new point is (____).
    11·2 answers
  • A rectangle measures 54 feet by 72 feet. What is the length, in feet, of
    8·1 answer
  • In the equation below a is a number between 0 and 1 8 x a = b which statement about the value of b is always true
    5·1 answer
  • The area of a rhombus whose diagonals are of lengths 10 cm and 8.2 cm is ____
    14·1 answer
  • √6⋅√11⋅√5 <br> simplify to radical form
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!