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PSYCHO15rus [73]
3 years ago
5

Evaluate f(9) given the function f(x)=3x2 – 11x - 21*

Mathematics
1 answer:
Blizzard [7]3 years ago
3 0

Answer:

123

Step-by-step explanation:

The given function is :

f(x)=3x^2 - 11x - 21

We need to find the value of f(9). It can be done by putting x = 9 in the above function as follows :

f(9)=3(9)^2 - 11(9) - 21\\\\=243-99-21\\\\=123

So, the value of f(9) is 123.

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I can't figure out this question. Can anyone help?
Jet001 [13]

Answer:

Z= 20

Y= 16

X= 12

Step-by-step explanation:

6 0
3 years ago
Consider the proof.
PolarNik [594]

Answer:

B

Step-by-step explanation:

did it on edge

4 0
3 years ago
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Three consecutive even integers have a sum of 24. Find the integers
strojnjashka [21]
Even integers have the form 2k so three consecutive even integers will be 2k,2(k+1),2(k+2)
so there sum will be
2k+2(k+1)+2(k+2)=24
simplifying
2k+2k+2+2k+4=24
adding like terms
6k+6=24
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5 0
3 years ago
Which conditional and its converse form a true biconditional?
zloy xaker [14]
The answer is
<span>D) If x=19, then 2x-3=35
proof
</span>
If x=19,  2(19)-3=38-3=35  so <span> If x=19, then 2x-3=35 is verified
</span>if <span>2x-3=35, so </span><span>2x=35 + 3, </span><span><span>2x=38 implies x = 19, so x =19 is verified

</span> </span>
<span>If x=19 if and only if  2x-3=35 </span>
7 0
4 years ago
Read 2 more answers
Solve the literal equation for the given variable<br> n =4/5(m+7); m
Step2247 [10]

Answer:

<h2>m =  \frac{5n}{4}  - 7</h2>

Step-by-step explanation:

<h2>n =  \frac{4}{5} (m + 7)</h2>

First of all multiply both sides by 5

That's

<h3>5n = 5 \times  \frac{4}{5} (m + 7) \\ 5n = 4(m + 7)</h3>

<u>Next divide both sides by 4</u>

That's

m + 7 =  \frac{5n}{4}

Subtract 7 from both sides to make m stand alone

We have

<h3>m + 7 - 7 =  \frac{5n}{4}  - 7</h3>

We have the final answer as

<h3>m =  \frac{5n}{4}  - 7</h3>

Hope this helps you

7 0
3 years ago
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