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2 years ago

Given the function f(x) = −5x2 − x + 20, find f(3).

Mathematics

1 answer:

SIZIF [17.4K]2 years ago

5 0

The answer is -28 I got you if you need more answers

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What is the simplified form of the following expression? 2√27+√12-3√3-2√12

LiRa [457]

Answer:

√3

Step-by-step explanation:

The given expression to be simplified is

$2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}$

but

$2 \sqrt{27}=2\sqrt{9 \times 3}=2 \times \sqrt{9}\times \sqrt{3}=2 \times 3 \times\sqrt{3}=6 \sqrt{3}$

$\sqrt{12}=\sqrt{4\times3}= \sqrt{4}\times \sqrt{3}=2\sqrt{3}$

Since √12=2√3,this implies that,

$2\sqrt{12}=2\times2\sqrt{3}=4 \sqrt{3}$

Therefore,

$2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}=6\sqrt{3}+2\sqrt{3}-3 \sqrt{3} -4\sqrt{3}$

$=(6+2-3-4)\sqrt{3}$

$=\sqrt{3}$

The simplified form of ,

$2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}$ is √3

8 0

3 years ago

Someone plz help me lol

riadik2000 [5.3K]

Answer:

the correct anwser is b b cause they both are positive y intercepts

7 0

3 years ago

Hard question help!!!!

mixas84 [53]

Answer:

Step-by-step explanation:

You can do 22/4 and that will give you 5.5. Since A gives the multiply chart for 5.5 to 4, the answer is A

5 0

2 years ago

Lerok [7]

3. Here we use the formula

$A = P ( 1 + \frac{r}{n} )^ {nt}$

And we have the following values given

$P = $23400, r = 3%=0.03,n =2, t=10 years$

So we will get

$A = 23400(1+ \frac{0.03}{2} )^{2*10}
\\
A = 23400( \frac{2.03}{2} )^{20} = $31516.52$

Question 4.

In this question , we have

$P = $2310, R = 3.5% = 0.035 ,
\\
Number \ of \ days \ from \ april \12 to July \ 5 = 30+31+23 = 84 days$

$A = 2310(1+ \frac{0.035}{365})^{84} = $2328.68$

Interest is the difference of amount and principal, that is

$I = 2328.68-2310 = $18.68$

5 0

3 years ago

So what is the tea on life ??? !!!!!!!!!<br> ANY chisme

GalinKa [24]

Answer:

I aint never seen two pretty best friends, its always one of em gotta be ugly

Step-by-step explanation:

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3 years ago