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2 years ago

Graph f (x) = -.25x + 4

Mathematics

1 answer:

Charra [1.4K]2 years ago

8 0

Answer:

what is the question.

I am not understand.

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What is S7 for 6 – 24 + 96 – 384 + ... ?

Dmitry [639]

6 - 34 + 96 - 384 +...
a 1 = 6 , a 2 = a 1 * ( - 4 ) , a 3 = a 2 * ( - 4 ), a 4 = a 3 * ( - 4)...
a 5 = - 384 * ( - 4 ) = 1,536
a 6 = 1536 * ( - 4 ) = - 6,144
a 7 = - 6,144 * ( - 4 ) = 24,576
This is a sum of a geometric sequence:
S 7 = 6 - 24 + 96 - 384 + 1,536 - 6,144 + 24,576 = 19,662
Another way to solve this:
S 7 = a 1 * ( r^n - 1) / ( r - 1 ) = 6 * (( - 4) ^7 - 1 )/ (- 4 - 1)=
= 6 * (-16,385) / (-5 ) = 19,662

8 0

2 years ago

Read 2 more answers

I need to to how to do this

gtnhenbr [62]

Cotangent is one over tangent
1/(4/7)
Answer 7/4

4 0

2 years ago

Find the area of A cylinder has a volume of 175 cubic units and a height of 7 units. The diameter of the cylinder is

damaskus [11]

To find the area of the cylinder we need to find its volume first. Remember that the formula for the volume of a cylinder is $V= \pi r^{2} h$
where:
$V$ is the volume
$r$ is the radius
$h$ is the height
From the question we know that $A=175$ and $h=7$ . Lets replace those values in our volume formula:
$175= \pi r^{2} 7$
Now we can solve for $r$ to find our radius:
$r^{2} = \frac{175}{7 \pi }$
$r^{2} = \frac{25}{ \pi }$
$r= \sqrt{ \frac{25}{ \pi } }$
$r= \frac{5}{ \sqrt{ \pi } }$

Now that we know the radius, we can use the formula for the area of a cylinder $A=2 \pi rh+2 \pi r^{2}$
where:
$A$ is the area
$r$ is the radius
$h$ is the height
We know now that $r= \frac{5}{ \sqrt{ \pi } }$ and $h=7$ , so lets replace those values in our area formula:
$A=2 \pi ( \frac{5}{ \sqrt{ \pi } } )(7)+2 \pi ( \frac{5}{ \sqrt{ \pi } })^{2}$
$A= \frac{70 \pi }{ \sqrt{ \pi } } +50$
$A=174.07$

We can conclude that the area of a cylinder that has a volume of 175 cubic units and a height of 7 units is 174.07 square units.

5 0

3 years ago

What is the value of x? Enter your answer in the box.

Andrews [41]

Answer:

$\displaystyle 7 = x$

Step-by-step explanation:

Five is one-eighth of forty, so relatively proportional to that, one-eighth of twenty-four is three, so you do this:

24 = 2x + 10

- 10 - 10

__________

$\displaystyle \frac{14}{2} = \frac{2x}{2} \\ \\ 7 = x$

I am joyous to assist you anytime.

5 0

2 years ago

Which function is the best represented by the graph?

Elena-2011 [213]

Answer:

Step-by-step explanation:

3 0

3 years ago