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arsen [322]
3 years ago
13

I need help with this question

Mathematics
1 answer:
Archy [21]3 years ago
3 0

Answer:

Step-by-step explanation:

r = 3.5 / 0.5 = 7

t3 = 0.5 * 7^2

t3 = 0.5 * 49

t3 = 24.5

tn = t1 * 7^(n - 1)

t8 = 0.5 * 7*(8 -1)

t8 = 0.5 * 823543

t8 = 411771.5

This problem is a geometric progression. That means that each term is multiplied by a constant and the term before it to get the current term.

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I need help with #8. I need to use the quadratic formula. I have a calculator that is programmed for the quadratic formula so al
GuDViN [60]

Answer:

  x = 14

Step-by-step explanation:

Extend line AB so that it intersects ray CE at point G. Then angles BGC and BAD are "alternate interior angles", hence congruent.

The angle at B is exterior to triangle BCG, and is equal to the sum of the interior angles at C and G:

  138 = (376 -23x) +(x^2 -8x)

Subtracting 138 and collecting terms we have ...

  x^2 -31x +238 = 0

For your calculator, a=1, b=-31, c=238.

__

<em>Additional comment</em>

You will find that the solutions to this are x = {14, 17}. You will also find that angle BCE will have corresponding values of 54° and -15°. That is, the solution x=17 is "extraneous." It is a solution to the equation, but not to the problem.

For x=14, the marked angles are A = 84°, C = 54°.

8 0
4 years ago
Evaluate the expression 9z – 4 for z = 3.
Juli2301 [7.4K]
9(3)-4
27-4
3 your answer is 3
7 0
3 years ago
Read 2 more answers
Can somebody help me out? I don’t get slope
Shalnov [3]

Answer: the slope of the line is 2/1

Step-by-step explanation:

Find a point on the graph and the go up twice until you see another point on the graph. So go to the right once. So you have found the slope of the line which is 2/1.

Hope this helps ☝️☝☝

5 0
3 years ago
An angle measures 12 degrees less than three times its supplement. Find the measure of the angle.
Nimfa-mama [501]

Supplementary angles must add up to 180 degrees.

3x-12=180

x=64 degrees


7 0
3 years ago
How can you write an equation of a line when you are given the slope and the y-intercept of the line? Explain
tester [92]

Answer:

The linear equation that represents each function is y=mx+b. While The m represent the slop so instead of writing you write the slope provided. Then multiply by the X + b which is your Y-intercept.

Here is an example,

The slope is 2/3 and the y intercept is 6, write a linear equation for this sequence.

y= (2/3). X +6

HOPE THIS HELPS!

6 0
3 years ago
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