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slavikrds [6]
2 years ago
7

Liana started to evaluate the function f(x) = 2x2 – 3x 7 for the input value 2. f(x) = 2(2)2 – 3(2) 7 = 2(4) – 3(2) 7 what is th

e value of the function when x = 2? 9 10 16 17
Mathematics
1 answer:
aniked [119]2 years ago
8 0

The value of the function when x = 2 will be 9. The value is obtained by putting the value 2 in the place of x.

<h3 /><h3>What is a function?</h3>

A connection between independent variables and the dependent variable.is defined by the function. Functions help to represent graphs and equations.

The given function in the problem is;

\rm f(x) = 2x^2  - 3x + 7

On putting x =2 we get;

\rm f(2) = 2(2)^2  - 3(2) + 7 \\\\\ f(2) = 2(4)  - 3(2) + 7 \\\\ f(2) = 8  - 6 + 7 \\\\ f(2) = 9

Hence the value of the function when x = 2 will be 9.

To learn more about the function refer to the link;

brainly.com/question/12431044

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lutik1710 [3]

Answer:1/16

Step-by-step explanation:

So I plugged in -4 for x

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hope that helps

3 0
3 years ago
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Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) Find cos theta, where theta is the angle in degrees between u and w.
vodka [1.7K]

Answer: The value of cos theta is -0.352.

Step-by-step explanation:

Since we have given that

\vec{u}=1\hat{i}+2\hat{j}-2\hat{k}\and\\\\\vec{w}=\hat{j}+4\hat{k}

We need to find the cos theta between u and w.

As we know the formula for angle between two vectors.

\cos\ \theta=\dfrac{\vec{u}.\vec{w}}{\mid u\mid \mid w\mid}

So, it becomes,

\cos \theta=\dfrac{2-8}{\sqrt{1^2+2^2+(-2)^2}\sqrt{1^2+4^2}}\\\\\cos \theta=\dfrac{-6}{\sqrt{17}\sqrt{17}}=\dfrac{-6}{17}=-0.352\\\\\theta=\cos^{-1}(\dfrac{-6}{17})=110.66^\circ

Hence, the value of cos theta is -0.352.

8 0
3 years ago
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viva [34]
The addition property of equality tells us that adding the same number to each side of an equation gives us an equivalent equation

Hope this helps!
5 0
3 years ago
To the nearest hundreth, what is the circumference of a circle with a radius of 7 units?​
Nataly_w [17]

Answer:153.94

Step-by-step explanation:circumference is πr^2

π × 49 = 153.93804

Nearest hundredth count two digits after the decimal(to make an hundredth), then round off with the third number

6 0
3 years ago
steven wants to buy a 565 bicycle. steven had no money saved,but will be able to deposit $30 into a savings account when he rece
goldenfox [79]

Answer:

21 weeks

Step-by-step explanation:

565+65=630/30=21

8 0
3 years ago
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