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goldfiish [28.3K]
3 years ago
11

Find the value of f(3) for the function. f(a)=5(a+4)- 9

Mathematics
1 answer:
Crazy boy [7]3 years ago
4 0

Answer:

f(3) = 26

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(a) = 5(a + 4) - 9

f(3) is x = 3

<u>Step 2: Evaluate</u>

  1. Substitute:                    f(3) = 5(3 + 4) - 9
  2. Add:                              f(3) = 5(7) - 9
  3. Multiply:                        f(3) = 35 - 9
  4. Subtract:                       f(3) = 26
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xz_007 [3.2K]
Uh oh speggego's im telling teacher lol
3 0
3 years ago
Ñ
Rainbow [258]

Answer:

20x+21y+14

Step-by-step explanation:

Combine like terms:

150x-80y+50-50x-25y+20=

100x-80y+50-25y+20=

100x-105y+50+20=

100x-105y+70

100x-105y+70 can be divided by 5 and get 20x+21y+14.

7 0
3 years ago
Which matrix is equal to P + Q?
Afina-wow [57]
Answer: 
\begin{bmatrix}-1.1 & 9.5\\-5.7 & 0.8\\6.1 & 0.7\end{bmatrix}

------------------------------------

Add up the corresponding elements

Row1,Column1: 6.1+(-7.2) = -1.1
Row1,Column2: 1.9+7.6 = 9.5
Row2,Column1: -7.5+1.8 = -5.7
Row2,Column2: 2.2+(-1.4) = 0.8
Row3,Column1: 3.8+2.3 = 6.1
Row3,Column2: -1.4+2.1 = 0.7

So that's why the answer is 
\begin{bmatrix}-1.1 & 9.5\\-5.7 & 0.8\\6.1 & 0.7\end{bmatrix}

3 0
4 years ago
The baker makes54 biscuits in the morning. Then he makes 26 more in the afternoon.
ololo11 [35]

Answer:

80 biscuits

Step-by-step explanation:

The question is not a whole question so I am just assuming that the question is how many biscuits were baked the whole day

Hope this helps :)

6 0
3 years ago
the sum of two numbers is 44. the smaller number is 20 less than the larger number. what are the numbers?
Troyanec [42]
Sum means add
x and y are the numbers
sum i 44
x+y=44

smaller s 20 les than larger
x=20+y
or
y=20+x
doesn't matter, just pick one
x=20+y

substue 20+y for x since they are equal
x+y=44
(20+y)+y=44
20+y+y=44
20+2y=44
subtract 20 from both sides
2y=24
divide by 2
y=12
subsitue
x=20+y
x=20+12
x=32

the numbers are 12 and 32
4 0
4 years ago
Read 2 more answers
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