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STatiana [176]
3 years ago
14

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

Mathematics
2 answers:
Sati [7]3 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]3 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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A service club is selling raffle tickets for 2.50 each to raise money for a charity. Vanessa has 34.75 to spend on raffle ticket
posledela

Answer:

13 Raffle tickets

Step-by-step explanation:

Cost for one riffle ticket = 2.50

Total money of Vanessa budgeted for riffle ticket : 34.75

Greatest number of riffle ticket, venessa can with with 34.75

I'll like us to divide 34.75 by 2.5 to get the exact value.

Therefore,

34.75 / 2.5

= 13.9

It therefore implies that, Vanessa will buy a maximum of 13 riffle tickets and still have a change of 2.25

4 0
3 years ago
HURRY. NEED To be done by 10:30
Zepler [3.9K]

Answer:

B) $822

Step-by-step explanation:

The total amount of money she spent can be found by adding her expenses:

312 + 287 + 112 + 111

Once added you get the total amount of:

$822

7 0
3 years ago
Read 2 more answers
Does anyone get this?
stepladder [879]

Answer: B

Step-by-step explanation:

 In the systems of equation it already gives you the solution for x  which is -2 so all you have to do is substitute -2 into the first equation and solve for y.

y= 2/3x + 3    

x= -2

Substitute x for -2

y = \frac{2}{3}* \frac{-2}1}  + 3  

y= \frac{-4}{3} + \frac{3}{1}    

y = \frac{5}{3}  

so now you have the solution like this (-2,\frac{5}{3})

8 0
3 years ago
Let f(x) = x^2 − 5. Find f(-3)
Art [367]

Answer:

f(-3)=4

Step-by-step explanation:

Substitute x=-3 into the function

f(-3)=(-3)^2-5

f(-3)=9-5

f(-3)=4

5 0
2 years ago
Read 2 more answers
A come and a pyramid has equal heights and volumes.if the base area of the pyramid is 154cm2.find the radius of the cone.
Dmitry_Shevchenko [17]

Answer:

Radius = 8.575 cm

Step-by-step explanation:

Formula for volume of a pyramid is;

V_p = ½Ah

Where A is area of base and h is height

Also, formula for volume of cone is given as;

V_c = ⅓πr²h

Now, we are told that V_p = V_c and that h is the same for both shapes.

Thus ;

½Ah = ⅓πr²h

h will cancel out to give;

½A = ⅓πr²

Cross multiply to give;

3A/2π = r²

Base area of pyramid is given as 154 cm². Thus;

(3 × 154)/2π = r²

r = √((3 × 154)/2π

r = 8.575 cm

4 0
3 years ago
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