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V125BC [204]
3 years ago
15

HELPP ME!!! What is f(3)?

Mathematics
2 answers:
wlad13 [49]3 years ago
7 0

Answer:

\huge\boxed{\sf f(3)=20}

Step-by-step explanation:

<u>Given function is:</u>

f(x) =3x^2-4x+5

Put x = 3

f(3) =3(3)^2-4(3)+5\\\\f(3)=3(9)-12+5\\\\f(3)=27-12+5\\\\f(3)=15+5\\\\f(3)=20\\\\\rule[225]{225}{2}

mina [271]3 years ago
6 0

Answer:

3(3)^2- 4(3) + 5 = 20

Step-by-step explanation:

f(x) just means function so you plug in the value of x in the equation and solve.

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, 80 POINTS Find k so that P(k,0) is equidistant from points A(1,2) and B(2,5).
blagie [28]

Answer:

P(1.5, 3.5)

Step-by-step explanation:

We need to find the average of the x and y coordinates. We do this by adding the two values, then dividing by two:

P(x1 + x2/ 2, y1 + y2/2) = P(1 + 2/ 2, 2 + 5/ 2) = P(3/2, 7/2) = P(1.5, 3.5)

These are our coordinates!

8 0
3 years ago
Solve the Inequality: m+16&gt;8m+2​
Setler [38]

Answer:

m<2

Step-by-step explanation:

To get to this, you first need to move the variable to one side, so you could subtract m from both sides to make the equation 16>7m+2. Next, you subtract 2 from both sides to make the equation into 14>7m. Finally, you would divide 7 from both sides to get 2>m, or m<2.

Hope this helps!

5 0
3 years ago
Which of the following could be the ratio between the lengths of the two legs
JulijaS [17]

Answer:

E

Step-by-step explanation:

Its simple

8 0
3 years ago
If you answered 17 out of 25 questions correct on a quiz, what would your grade be as a percent?​
k0ka [10]

Answer:

68%

Explanation:

17/25 = 0.68

5 0
3 years ago
The figure below shows the design of a truss to support the weight of a roof. In this truss design, ∠A⩭∠D and ĀF⩭DF.
bearhunter [10]

Answer:

m\angle A= 30^{\circ}

Step-by-step explanation:

In the question, we're given \angle A\cong \angle D. Therefore, the measure of these two angles must be equal.

To find the value of x, set these two angles equal to each other:

4x-26=x+16

Add 26 and subtract x from both sides:

3x=42

Divide both sides by 3:

x=\frac{42}{3}=14

Since \angle A was labelled as 4x-26, substitute x=14 to find its measure:

\angle A=4(14)-26,\\\angle A=56-26,\\\angle A=\boxed{30^{\circ}}

You can also substitute x=14 into the label of angle D as angle A is congruent to angle D for easier calculations (14+16=\boxed{30^{\circ}}).

5 0
3 years ago
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