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NeTakaya
3 years ago
8

Let f(x) = x^2 - 2x a. Find and simplify f(5) b. Find the value of x such that f(x)=3

Mathematics
1 answer:
likoan [24]3 years ago
5 0
A) f(5)= 5^2 -2•5= 25-10=15
b) x^2 -2x-3=0
(x-3)(x+1)=0 so
x=3 and x=-1 are the solutions
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How do I write the sum of two numbers as the product of their GCF and another sum
Delicious77 [7]
Let's assume we were given 2 numbers: 15 and 30. Their sum is:
15+30 = 45
We want to express it as the product of GCF and another sum.
15 is divisible by: 1, 3, 5, 15
30 is divisible by: 1, 2, 3, 5, 6, 10, 15, 30
The greatest number that appears in 2 series is 15.
\frac{15}{15} = 1
\frac{30}{15} = 2
In this case sum of two numbers can always be written as:
15+30 = (15\cdot 1) + (15\cdot 2) = 15\cdot (1+2) = 15\cdot 3 = 45

8 0
3 years ago
Read 2 more answers
What is the value of log256 4
Sauron [17]

Answer: 1/4 or 0.25

Step-by-step explanation: We will solve log256 4 in several steps to solve for x.

Step 1: Log256 4 = x

Step 2: 256x = 4                    ( Next, Use exponents )

Step 3: (2^8)x = 2^2

Step 4: 2^8x = 2^2

Step 5: 8x = 2  (Solve for x0

Step 6: 8x/8 = 2/8     = x = 1/4

Step 7 (The Answer) x, or log256 4 = 1/4 or 0.25

4 0
3 years ago
Can someone please explain this
S_A_V [24]
Oh. It's rounding. So, for example, depending what you were told to round to, the second problem would be 760-330=430
7 0
3 years ago
The cost of milk is expected to raise 106% over the next year
gulaghasi [49]

Answer: about $6.90


Step-by-step explanation: 106% of 3.35

100% of 3.35 is 3.35

6% of 3.35 is 0.201

Add them together and you get 3.551

When you round to the nearest cent, you get $3.55

After add 3.55 to 3.35 and you get $6.90


3 0
3 years ago
I’m not sure how to do this please help
Nikolay [14]

Answer:

B :step 2   she didnt collect all the like terms and calculate

Step-by-step explanation:

first rewrite  remove all (  )Parentheses

2nd   collect all like terms and calculate

a^4 + 7a -16 -12^a^3 + 5a -3

a^4 + 12a - 19 - 12a^3     ( Like terms are 7a +5a  and -16 +-3)

so she skipped the second step

3 0
2 years ago
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