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
Usimov [2.4K]
3 years ago
12

9a + 18c. What is the value of the expression when a = −5 and c = −1?

Mathematics
1 answer:
saw5 [17]3 years ago
4 0
1. plug in the numbers for the variables, like this: 9(-5)+18(-1)

2. solve
Hopefully this helps! Let me know if you need more explanation.
You might be interested in
Find Sn for the given arithmetic series a1=-26 d=-9 n=24
ryzh [129]

Answer:

- 3108

Step-by-step explanation:

The sum to n terms of an arithmetic series is

S_{n} = \frac{n}{2} [ 2a_{1} + (n - 1)d ]

Substitute the given values into the formula

S_{24} = \frac{24}{2} [ (2 × - 26) + (23 × - 9) ]

                          = 12 ( - 52 - 207 )

                         = 12 × - 259 = - 3108

5 0
3 years ago
What is the perimeter of a square if it has an area of 36 square centimeters?
kirill115 [55]
Let x is the side of the square
so A = x * x or A = x^2 = 36
As you know 36 is a perfect square root = 6^2
Then  x = 6 cm

Perimeter = 4x = 4(6) = 24 cm
7 0
3 years ago
There are a total of 63 bikes at a sports shop. If 18 bikes are blue, what is the ratio of blue bikes to black bikes?
prohojiy [21]

Answer:

45 to 18 it's easy

Step-by-step explanation:

subtract 18 from 63 and there is your ratio

3 0
3 years ago
Which of the following is an element?
Blababa [14]
Milk, water and aluminum foil
8 0
3 years ago
For married couples living in a certain suburb, the probability that the husband willvote on a bond referendum is 0.21, the prob
jeyben [28]

Answer:

niglgapopfart

Step-by-step explanation:

12(5)6$78$???98

8 0
3 years ago
Other questions:
  • How do I solve this <br><img src="https://tex.z-dn.net/?f=%20%20-%207%20%5Csqrt%7B36%7D%20%20-%20%28%20-%202%29%28%20-%203%29" i
    6·1 answer
  • 4more then the difference of 2 and z​
    9·1 answer
  • I need the big brain help and maybe mark brainliest<br><br><br>:)
    15·2 answers
  • Why are all 4-digit Fredholl numbers composite?
    5·1 answer
  • PLEASE HELP PLEASE PLEASE
    6·1 answer
  • What is the solution 7tan^3x-21tanx=0
    10·1 answer
  • Which below is an expression 2+2=4 2+3=5 2x+5 2x=4 PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!
    8·1 answer
  • An angle measures 12°. Find its complement. Do not include units in your answer.
    6·2 answers
  • What is the value of f( 1 )?
    15·1 answer
  • Find a degree 3 polynomial that has zeros -2,3 and 6 and in which the coefficient of x^2 is -14. The polynomial is: _____
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!