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adoni [48]
3 years ago
15

Which of these is the algebraic expression for "nine less than some number?"

Mathematics
2 answers:
ddd [48]3 years ago
8 0
The answer is D. k-9

Since “some number” isn’t identified it is substituted for a variable (k) and then you just subtract 9
sineoko [7]3 years ago
3 0

Answer:

last one

Step-by-step explanation:

You might be interested in
−9x (5x+4 ) +10 (x+3) can someone please solve his for me thank u step by step please i really need to find out how to do it
Ivahew [28]

Answer:

-45x^{2}-26x+30

Step-by-step explanation:

So first you let's divide this equation into three parts.

Part one -9x(5x+4)

  1. Step one: you have to distribute the -9x to the numbers in the parentheses. That would leave us with a -9x*5x = -45x^{2} and -9x*4 = -36x
  2. Step two: Put the answers together. That would leave us with -45x^{2}-36x.

Part two 10(x+3)

  1. Step one: you have to distribute the 10 to the numbers in the parentheses. That would leave us with a 10*x = 10x and 10*3 = 30
  2. Step two: Put the answers together. That would leave us with 10x+30

Part three solve

  1. Step one: combine and put together what you have solved for. That would leave us with a -45x^{2}-36x+ 10x+30
  2. Step two: combine like terms. The like terms here are -36x and 10x. When you combine them you would get -26x.
  3. Step three: Write the equation in standard form. Therefore the answer is -45x^{2}-26x+30.

Let me know if anything is confusing!

5 0
3 years ago
The area of a square can be found using the equation A=s^2, where A is the area and s is the measure of one side of the square.
MaRussiya [10]
A = 81 square in.

s = sqrt(A)

s = sqrt(81)

s = 9 in.
8 0
3 years ago
Helpppppp meeeeeee plz ​
V125BC [204]

60 total fourth graders and 43 are girls. To find the number of boys, subtract.

60 - 43 = 17 boys

If 5 girls were absent, subtract.

43 - 5 = 38 girls present

If 4 boys were absent, subtract.

17 - 4 = 13 boys present

Therefore, there were 13 boys present.

Best of Luck!

6 0
3 years ago
Read 2 more answers
Case Study 2
ICE Princess25 [194]

Answer:

good for them i think

Step-by-step explanation:

this doesnt make any sense

4 0
3 years ago
If rectangle is 12 inches long and 8 inches wide, what is the ratio of its length to its width?help
Kamila [148]
12:8
or you can simplify it to
3:2
3 0
4 years ago
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