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STatiana [176]
2 years ago
14

Iana started to evaluate the function f(x) = 2x2 – 3x + 7 for the input value 2.

Mathematics
2 answers:
Sati [7]2 years ago
5 0
The answer is nine because 2(4)=8   3(2)=6   7=7, os 8-6+7= 2+7 =9
DedPeter [7]2 years ago
3 0

Answer:

f(2) = 9.

Step-by-step explanation:

Given : f(x) = 2x² – 3x + 7.

To find : What is the value of the function when x = 2.

Solution : We have given that f(x) = 2x² – 3x + 7.

For, x = 2

f(2)  = 2(2)² – 3(2) + 7.

f(2) = 2 *4 -6 +7

f(2) = 8 - 6 +7.

f(2) = 2 +7

f(2) = 9.

Therefore, f(2) = 9.

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If f(x) = (x + 9 and g(x) = --6, which describes the range of (f + g)(x)?
S_A_V [24]

Given:

Consider the below figure attached with this question.

To find:

The value of (f+g)(x).

Solution:

The given functions are:

f(x)=|x|+9

g(x)=-6

Now,

(f+g)(x)=f(x)+g(x)

(f+g)(x)=|x|+9+(-6)

(f+g)(x)=|x|+9-6

(f+g)(x)=|x|+3

We know that,

|x|\geq 0

Adding 3 on both sides, we get

|x|+3\geq 0+3

(f+g)(x)\geq 3

So, (f+g)(x)\geq 3 for all values of x.

Hence, the correct option is A.

6 0
3 years ago
A model scale is 1 cm = 8m.<br> If the actual object is 40 meters, the model is<br> ____ cm long.
Dovator [93]

Answer:

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Step-by-step explanation:

MI no sabo amigo perdon

8 0
2 years ago
Read 2 more answers
Pls help i give brainliest
GalinKa [24]
10,000 in the answer
3 0
3 years ago
Order these numbers from least to greatest.
lara [203]
7 9/11 = 7.81 with a line over the 81 because it is repeating
15/720 = 0.020
7.58
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least to greatest : 15/720, 7.58 , 7.812 , 7 9/11
7 0
3 years ago
Read 2 more answers
A survey was done that asked people to indicate whether they preferred to swim in a pool or in an ocean. The results are shown i
posledela
Given:
                                 Pool swimming        Ocean swimming    Total
Age 30 and younger             228                         54                 282
Over 30 years old                142                        185                 327
total                                    370                        239                609

Frequencies:
                                Pool swimming        Ocean swimming    Total
Age 30 and younger     228/609 = 0.37         54/609 = 0.09       282/609 = 0.46
Over 30 years old        142/609 = 0.23       185/609 = 0.30       327/609 = 0.54
<span>total                           370/609 = 0.61       239/609 = 0.39       609/609 = 1.00</span>

<span>The relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean is 0.30</span>    
8 0
3 years ago
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