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2 years ago

Someone please give me an explanation for this

Mathematics

1 answer:

andreev551 [17]2 years ago

3 0

if u can calculate the slope try refreshing...then divide

..I'm a beta student in 7th grade but I tried my method

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Show work and explain with formulas.

Juli2301 [7.4K]

20 Answer: a₁ = 4

Step-by-step explanation:

$a_n=324,\ r=3,\ n=5\\\\a_n=a_1 \cdot r^{n-1}\\\\324=a_1\cdot 3^{5-1}\\\\\dfrac{324}{3^4}=a_1\\\\\dfrac{324}{81}=a_1\\\\\large\boxed{4}=a_1$

21 Answer: n = 13

Step-by-step explanation:

$a_n=\dfrac{1}{64},\ a_1=64,\ r=\dfrac{1}{2}\\\\a_n=a_1 \cdot r^{n-1}\\\\\dfrac{1}{64}=64\cdot \bigg(\dfrac{1}{2}\bigg)^{n-1}\\\\\dfrac{1}{64\cdot 64}=\bigg(\dfrac{1}{2}\bigg)^{n-1}\\\\\dfrac{1}{2^6\cdot 2^6}=\dfrac{1}{2^{n-1}}\\\\6+6=n-1\\\\\large\boxed{13}=n$

22 Answer: n = 5

Step-by-step explanation:

$a_n=48,\ a_1=1875\ r=\dfrac{2}{5}\\\\a_n=a_1 \cdot r^{n-1}\\\\48=1875\cdot \bigg(\dfrac{2}{5}\bigg)^{n-1}\\\\\dfrac{48}{1875}=\bigg(\dfrac{2}{5}\bigg)^{n-1}\\\\\dfrac{16}{625}=\bigg(\dfrac{2}{5}\bigg)^{n-1}}\\\\\bigg(\dfrac{2}{5}\bigg)^4=\bigg(\dfrac{2}{5}\bigg)^{n-1}}\\\\4=n-1\\\\\large\boxed{5}=n$

6 0

2 years ago

Read 2 more answers

Kai is buying boxes of cookies at a bakery. Each box of cookies costs \$4$4dollar sign, 4. He wrote this equation to find how ma

IRISSAK [1]

Answer:

WHAT COLLIG U GO 2 :3

Step-by-step explanation:

CRISSY WAKE UP I DONT LIKE THIS CRISSY WAKE UP HEY HELLO TIME TO WAKE UP TIME TO WAKE UP CAN YOU HEAR ME WAKE UP CRISSY I DONT LIKE THIS CRISSY WAKE UP AHHH DIDNT MEAN TO SCARE YOUY YOU OKAY JUST GIVE ME THE WORD AND ILL JUST WALK AWAY DO YOU EVER FELL LIKE YOUR LOSING OYUR MINE ON A DAILY BASIS ALL THE THIME YOU KNOW YOUR NOT WHAT I THOUGHT YOUD BE EDDUE DID YOU FIND ANYTHING PECSIUL BLISS JUST MOMENTS AWAY CRISSY CRISSY CRISSY CRISY SWAKE UO I DONT OIKE THIS

8 0

1 year ago

Which of the following is an equation of the line that passes through the point (2, 2) and is parallel to the graph of the equat

pickupchik [31]

Answer:

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x - 1 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes, thus

y = 3x + c ← is the partial equation of the parallel line

To find c substitute (2, 2) into the partial equation

2 = 6 + c ⇒ c = 2 - 6 = - 4

y = 3x - 4 → B

4 0

3 years ago

Read 2 more answers

On-the-Go Phone Company has two monthly plans for their customers. The EZ Pay Plan costs $0.15

ddd [48]

Answer:

a. 0.15x

b. 40+0.05x

c. 0.15x=40+0.05x

15x=4000+5x

x=400 min

6 0

2 years ago

Rewrite the function in intercept form y=x^2+8x+15

gavmur [86]

To do that, you need to set it all to zero and factor: x^2+8x+15 = 0 (x+5)(x+3) = 0 then put both those in parentheses chunks in their own equations x + 5 = 0 x + 3 = 0 and then simplify x = -5 x = -3 So the two points where the parabola crosses the x-axis are -5 and -3.

3 0

2 years ago