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Nataly [62]
2 years ago
6

Write x^2-4x+7 in the form (x+a)^2+b where a and b are constants.

Mathematics
1 answer:
Novosadov [1.4K]2 years ago
8 0

Answer:

wiat

Step-by-step explanation:

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How many phone numbers are possible for one area code if the first four numbers are 202-1 , in that order , and the last three n
Mkey [24]

6 phone numbers are possible for one area code if the first four numbers are 202-1

<u>Solution:</u>

Given that, the first four numbers are 202-1, in that order, and the last three numbers are 1-7-8 in any order  

We have to find how many phone numbers are possible for one area code.

The number of way “n” objects can be arranged is given as n!

Then, we have three places which changes, so we can change these 3 places in 3! ways

n! = n \times (n - 1)!

Hence 3! is found as follows:

3! = 3 \times (3-1)!\\\\3! = 3 \times 2!\\\\3! = 3 \times 2 \times 1 = 6

So, we have 6 phone numbers possible for one area code.

3 0
3 years ago
For f(x)=1/x^2-3
igomit [66]

For f(x)=1/x^2-3

Find  

A) f(3)

B) f(2-h)

If f(x)=1/x^2-3, then f(3) = 1 / 3^2 - 3.  The exponentiation here must be carried out first:  f(3) = 1/9 - 3.  Then f(3) = 1/9 - 27/9 = -26/9

If f(x)=1/x^2-3, then f(2-h) = 1 / [2-h]^2 - 3.  This result may be left as is or expanded.  In expanded form, we have:

                     1

f(2-h) = ------------------ - 3

              4-4h +h^2

5 0
3 years ago
Solve the equation.
Rasek [7]

Answer:

x=1/2 would be correct

4 0
3 years ago
Read 2 more answers
Which function has the graph shown?
Alexeev081 [22]

Answer:

B

Step-by-step explanation:

The graph is a sine curve but multiplied by -1

7 0
3 years ago
A triangular prism is 18 centimeters long and has a triangular face with a base of 12 centimeters and a height of 8 centimeters.
levacccp [35]

Answer:

672 sq cm

Step-by-step explanation:

Each triangular base is 1/2 (12 * 8) or 48, making them = 96.

One of the sides is 12 x 18 = 216

The other 2 sides are 10 x 18 = 180 x 2 = 360

Add them all together to get 672 sq cm

8 0
2 years ago
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