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
lara [203]
3 years ago
8

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

Mathematics
1 answer:
sladkih [1.3K]3 years ago
3 0
f(x)=5x+40\\\\x=-5\\\\\text{substitute the value of x to the equation}\\\\f(-5)=5\cdot(-5)+40=-25+40=15
You might be interested in
The sum of two numbers is 51 and the difference is 11. what are the numbers?
stiv31 [10]

(51 - 11) : 2 = 20

20 + 11 = 31


20 and 31

6 0
3 years ago
When 142 is added to a number, the result is 64 more than 3 times the number. Find
dmitriy555 [2]
X+142 =3x+64

subtract x from each side

142 = 2x+64

subtract 64 from each side

142-64 = 2x

78=2x

divide by 2

78/2 = x

x=39

The number is 39
8 0
2 years ago
the angle of elevation from the tip of the shadow to the top of the tree is 36 degrees. find the distance from the top of the tr
Bas_tet [7]
In order to fully understand the problem, it is best to sketch it. Sketching the system, we will see that the system forms a triangle where the angle of elevation is 36 degrees. We are asked to find the hypotenuse. We can use a trigonometric function. It should be noted that one of the sides should also be given in order to calculate the hypotenuse. Trigonometric functions that can be used are:

sin(theta) = opposite / hypotenuse
cos(theta) = adjacent / hypotenuse
7 0
3 years ago
Read 2 more answers
Translate into an inequality:
qwelly [4]

Answer: x < 2/3

Step-by-step explanation:

8 0
3 years ago
D is none of the above , and yes
Pani-rosa [81]

Answer:

= 2 {}^{2}  - 3(2) =  - 2 \\ 3 {}^{2}  - 3(3) = 0 \\ 4 {}^{2}  - 3(4) = 4 \\ 5 {}^{2}  - 3(5) = 10

5 0
3 years ago
Other questions:
  • 20 boxes of apples have been delivered to a restaurant. The number of apples in each box is counted. Complete the table below an
    10·1 answer
  • Solving rational equations<br><br> solve for x: 3/x-4=7/x
    8·2 answers
  • A triangular pyramid is made of 4 equilateral triangles. The sides of the triangles measure 5 m, and the height of each triangle
    13·2 answers
  • 2-2x&gt;-20<br> A. x&gt; 12<br> B. x &lt;9<br> C. x &lt; 10<br> D. x &lt; 11
    11·2 answers
  • Question 1&amp;2 with explanation. Pls fast , no useless and nonsense answers pls
    11·1 answer
  • You can write ratio in three different ways​
    14·1 answer
  • Coleman graphed the relationship between the number of rotations of his front bike tire and the distance
    10·2 answers
  • What is the quadratic function f(x)= x^2 + 8x − 2 in vertex form?
    11·1 answer
  • Mention 3 places<br> where you can get<br> pre-approved for a<br> car loan
    11·1 answer
  • 16 more than craigs score is 62
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!