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Tomtit [17]
3 years ago
6

Solve the equation for x:

Mathematics
1 answer:
laiz [17]3 years ago
7 0

Answer:

D

Step-by-step explanation:

-9x-9=18

plus 9 on both sides

-9x=-9

divide both sides by -9

x=1

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Woo-Jin and Kiran were asked to find an explicit formula for the sequence 64\,,\,16\,,\,4\,,\,1,...64,16,4,1,...64, comma, 16, c
olya-2409 [2.1K]

Answer:

f(n)=64(\frac{1}{4})^{n-1}

Step-by-step explanation:

The given sequence is

64, 16, 4, 1

r_1=\dfrac{a_2}{a_1}=\dfrac{16}{64}=\dfrac{1}{4}

r_2=\dfrac{a_3}{a_2}=\dfrac{4}{16}=\dfrac{1}{4}

r_3=\dfrac{a_4}{a_3}=\dfrac{1}{4}

It is a geometric series because it has a common ratio r_1=r_2=r_3=\dfrac{1}{4}.

First term is 64.

The explicit formula of a geometric series is

f(n)=ar^{n-1}

where, a is first term and r is common ratio.

Substitute a=64 and r=1/4 in the above function.

f(n)=64(\frac{1}{4})^{n-1}

Therefore, the required explicit formula is f(n)=64(\frac{1}{4})^{n-1}.

5 0
3 years ago
Read 2 more answers
Solve for x.<br> 10<br> 15+ 2x<br> K.<br> L<br> M<br> x+19<br> (A) 2<br> B) -4<br> D<br> 3
aksik [14]

Answer:

C

Step-by-step explanation:

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8 0
3 years ago
Answer with A B C D. Correct answer gets brainlest.
pav-90 [236]

Answer:

That would be 4.

Step-by-step explanation:

I have had this exact question..I got it right with 4. =-=

7 0
3 years ago
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Solve for the x intercept of y=mx+b
IrinaVladis [17]
\frac{y-b}{m} =x

Hope I helped :)
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3 years ago
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gladu [14]
First one :
We divide it into two rectangles (the top one has dimensions 2in*4in)

The area of the top rectangle is 2*4=8 in^2

The second rectangle has dimensions 3*(5-3)=6 in^2
Hence the total area is 8+6=14 square inches

Second one :

We divide it into a rectangle (dimensions 11*17) and a triangle on the top.

The area of the rectangle is 11*17=187 m^2
The rectangle has dimensions 17 (base's length) and 23-11 (height) hence its area is 17*(23-11)/2=102 m^2

Hence the total area is 102+187=289 square meters

6 0
3 years ago
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