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nalin [4]
3 years ago
10

Please help!!! I've been trying to figure this out all day!

Mathematics
1 answer:
MrRa [10]3 years ago
3 0

Answer:

.55(220-a) + .90(220-a)

Step-by-step explanation:

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If f(x) = 2х2 +1 and g(x) = х2 -7, find (f-g)(x).
Nookie1986 [14]

Option A

If  f(x) = 2x^2 + 1 and g(x) = x^2 - 7 then (f - g)(x) = x^2 + 8

<em><u>Solution:</u></em>

Given that f(x) = 2x^2 + 1 and g(x) = x^2 - 7

To find: (f - g)(x)

We know that,

(f – g)(x) = f (x) - g(x)

Let us substitute the given values of f(x) and g(x) in above formula,

(f - g)(x) = 2x^2 + 1 - (x^2 - 7)

For solving the brackets in above expression,

There are two simple rules to remember:

When you multiply a negative number by a positive number then the product is always negative.

When you multiply two negative numbers or two positive numbers then the product is always positive.

So the expression becomes,

(f - g)(x) = 2x^2 + 1 -x^2 + 7

Combining the like terms,

(f - g)(x) = 2x^2 - x^2 + 1 + 7\\\\(f - g)(x) = x^2 + 8

Thus option A is correct

8 0
3 years ago
Find the interquartile range (IQR) of the data in the dot plot below.
Gala2k [10]

Answer: According to the picture the IQR would be 3.5

Step-by-step explanation:

4 0
2 years ago
What is the value of one divided by zero?
Soloha48 [4]

Answer:

5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Given the circle with the diameter of 33 cm find the area of the circle
exis [7]

Answer:

51.81 cm^2

Step-by-step explanation:

Find The Half Of 33 which is 16.5

Use The Formula For Area

A= \pi x r^2

A= 3.14 x 16.5

A= 51.81 cm^2

3 0
2 years ago
I NEED HELP AGAIN PLEASE GIVE ANSWER AND EXPLANATION!!!<br><br> m + 4 &lt; - 3
creativ13 [48]
463 is the answer because-3 m + 4 would equal 463
4 0
3 years ago
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