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sergij07 [2.7K]
3 years ago
12

Find the zeros of the function. f(x) = 3x2 – 8x – 16

Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0

Answer:

amusing you mean 3x^2-8x-16 the answer is when x is equal to -4/3 and 4

Step-by-step explanation:

3x^2-8x-16 ------> (3x+4)(x-4)

3x+4=0 ----> 3x=-4 ----> x=-4/3

x-4=0 ----> x=4

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How do I solve this equation? If 3t-7=5t then 6t=a 21b-7c-21d-42
Ugo [173]
3t-7=5t \ \ \ \ \ |\hbox{subtract 3t} \\
-7=2t \ \ \ \ \ \ \ \ |\hbox{multiply by 3} \\
-21=6t \\ \\
\boxed{6t=-21} \\
\hbox{answer C}
5 0
4 years ago
Distribute and simplify these radicals. 12 x(-1+ √5)
Serga [27]
Hello there!

Here is the answer worked out for you!
12x[-1+sqrt(5)]
-12x+12xsqrt(5)

Remember that you can only add like terms so you can't add -12x to 12xsqrt(5). The radical makes it an unlike term.

I hope this helped and best wishes!

5 0
3 years ago
Read 2 more answers
Please answer this correct answer now fast
lutik1710 [3]

Answer:

WX = 8 mm

Step-by-step explanation:

To be able to solve for WX, we need to first find the size of angle \angle z.

We use the law of sines in the blue triangle to do such:

\frac{sin(z)}{11} =\frac{sin(133)}{20} \\sin(z)=\frac{11\,sin(133)}{20} \\sin(z)=0.4022

Now we can use this value in the larger right angle triangle where WX is the opposite side to angle  \angle z, and the 20 mm side is the hypotenuse:

sin(z)=\frac{opposite}{hypotenuse} \\sin(z)=\frac{WX}{20}\\0.4022=\frac{WX}{20}\\WX=20\,(0.4022)\\WX=8.044\,\,mm

which rounded to the nearest integer gives

WX = 8 mm

3 0
3 years ago
What is the solution to this system of equations?
Rashid [163]
X=45
y=-8
check if this work
4 0
3 years ago
Which of the following is an arithmetic sequence?
madreJ [45]

Answer:

A

Step-by-step explanation:

A is an arithmetic sequence with first term -2 and common difference 5.  Each new term is found by adding 5 to the previous term.

B is a geometric sequence with first term 1 and common ratio 1/2.

C is neither an arithmetic nor a geometric sequence.

D is neither.  We might call it an "alternating sequence."

8 0
3 years ago
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