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2 years ago

Write an equation in Point-Slope Form that passes through the points (2,-3) & (4,7)

Mathematics

1 answer:

PIT_PIT [208]2 years ago

3 0

Answer:

$y=5x-13$

Step-by-step explanation:

Using the graph starting at -13 and going up 5 and over right 1 continuously, it tends to pass 2,-3 and 4,7.

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The circle passes through the point

elena55 [62]

It might be D in my opinion? But I probably did my work wrong.. sorry!

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3 years ago

Determine the sum of the first 9 terms in the geometric series where r= -0.25 and a1= 256.

Damm [24]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ r=-0.25\\ a_1=256\\ n=9 \end{cases}$

$\bf S_9=256\left(\cfrac{1-(-0.25)^9}{1-(-0.25)} \right)\implies S_9=256\left( \cfrac{1+0.25^9}{1+0.25} \right) \\\\\\ S_9=256\left( \cfrac{52429}{65536}\right)\implies S_9=\cfrac{52429}{256}\implies S_9=204.80078125$

4 0

2 years ago

Read 2 more answers

Write an inequality, in slope-intercept form, for the graph below. If necessary,

d1i1m1o1n [39]

Answer:not 100 % sure but I can write a slope intercept form equation, but not an inequality. I would need a picture of the graph to write an inequality.

First find slope: (y2 - y1)/(x2 - x1) Slope is 3

Choose a point then use point slope form y - y1 = m(x - x1) It is y - 1 = 3(x - 1)

Now simplify:

y - 1 = 3(x - 1)

y - 1 = 3x - 3

y = 3x - 2

Step-by-step explanation:

8 0

2 years ago

HELP! This needs to be answered ASAP!

andriy [413]

Answer:

it will take 4 hours( I'm not so sure)

Step-by-step explanation:

$25x $15

------- = ------------- + 75

1h. 1h

25x = 100

x =100/25

x = 4

8 0

2 years ago

How many solutions will there be to the following equation?

Akimi4 [234]

Answer:

C. 1 solution

Step-by-step explanation:

I calculated logically

7 0

2 years ago