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Pavlova-9 [17]
3 years ago
8

Solve:

Mathematics
2 answers:
STatiana [176]3 years ago
8 0

The solutions to the equation 3-k=\sqrt{3k+1} are k = 1 and 8

The given equation is:

3-k=\sqrt{3k+1}

Square both sides of the equation

(3-k)^2=3k+1

Expand the left side of the equation above

(3-k)^2=3k+1\\\\(3-k)(3-k)=3k+1\\\\3^2-3k-3k+k^2=3k+1\\\\9-6k+k^2=3k+1

Write the quadratic equation in standard form

k^2-6k-3k+9-1=0\\\\k^2-9k+8=0\\\\

Factor the quadratic equation

(k-8)(k-1)=0

Use the zero product property

k - 8 = 0

k = 8

k - 1 = 0

k = 1

The solutions to the equation 3-k=\sqrt{3k+1} are k = 1 and 8

Learn more here: brainly.com/question/25840704

IgorC [24]3 years ago
7 0

answer

first one: 8 and 1

second one: is 1

Step-by-step explanation:

slay

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Write a recursive rule for the sequence. Assume it starts with the 1st term. 10, 14, 18, 21...
Papessa [141]

Option D is correct. The correct option for the recursive formula is f(0) =6;f(n)=f(n - 1)+4

Given the sequence 10, 14, 18...

The first term is 10, hence

a1 = 10

The previous terms will be a_{n-1}

From the sequence, we can see that <em>4 is being added to the previous term to get the next term</em>. Hence the nth term will be expressed as:

a_n = a_{n-1} + 4

Get the term before the first term a_0

If n = 1

a_1 = a_{1-1} + 4\\a_1 = a_{0} + 4\\a_0=a_1-4\\a_0=10-4\\a_0=6

Hence the correct option for the recursive formula is f(0) =6;f(n)=f(n - 1)+4

Learn more here: brainly.com/question/18233843

3 0
3 years ago
What is the sum of the degrees of the interior angles of a 19-gon?
algol [13]
<span>Sum of Interior Angles = (Number of Sides -2) • 180 degrees
Sum = (19 -2) * 180
</span><span>Sum = 17 * 180
Sum of Degrees = 3,060

Source
http://www.1728.org/polygon.htm
</span>

8 0
3 years ago
Easy question. 10 points
kati45 [8]

Answer:

B 100%

Step-by-step explanation:

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vichka [17]
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5 0
4 years ago
NEED MORE HELP DUE TOMMOROW ONLY HAVE 15 POINTS SO ITS GOTTA BE 10 CUZ I GOT OTHER QUESTIONS THAT NEED ANSWERING
stealth61 [152]

Answer:

a: 00:45

b: 7:30 PM

Step-by-step explanation:

Hope this is right

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