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Alla [95]
3 years ago
8

Part B is easy I just need part A

Mathematics
1 answer:
lions [1.4K]3 years ago
3 0

Answer:

80 feet

Step-by-step explanation:

According to the tangent-secant theorem, the square of the tangent length is equal to the product of the secant segment and the external portion.

In other words:

30² = (10 + x) (10)

900 = 100 + 10x

800 = 10x

x = 80

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The perimeter of a stop sign has a perimeter of 16x2 - 80x. What is the length of one side?
uranmaximum [27]
Since a stop sign is an octagon it has eight sides.  So the perimeter will be:

p=8x,  p=perimeter and x=side length.  We are told that the perimeter is equal to:

16x^2-80x so we can say:

16x^2-80x=8x subtract 8x from both sides

16x^2-88x=0  factor out 8x

8x(2x-11), since we know x>0

x=11/2

x=5.5 units
7 0
2 years ago
Dharma and Jorge are looking at cell phone plans. A
riadik2000 [5.3K]

Answer:

Dharma and Jorge should purchase a group plan.

They could save $9.55

Step-by-step explanation:

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An individual plan will cost an average of $72.75 per month.

Two individual plans will cost an average of

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Since $145.50 > $135.95,  Dharma and Jorge should purchase a group plan.

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4 0
3 years ago
Please help me thank you
Katen [24]

Answer: y=-0.5x+4.5

Step-by-step explanation: y=mx+b, m is the slope = -1/2 or -0.5, and b is the y-int, which is 4.5

3 0
2 years ago
Challenge A movie theater sends out a coupon for 35% off the price of a ticket. Write an equation
Greeley [361]

Answer:

The equation is y= 0,65 x

If x is the price of the ticket without the coupon, and the theater offers a discount if you have a coupon, then having a coupon means that the price a person ultimately  pays (y) is  the original price (x) minus a 35% of this price: y= x -0.35 x . By association: y= (1-0.35) x and then y= 0.65 x.

The line should be in the first quadrant because the first quadrant allows you to represent a situation in which the dependent variable (y) and the independent variable (x) are both positive. This is the case in this exercise, because both prices, the one without discount (x) and the one with discount (y) are necessary positive (you can not pay a negative price!).

Step-by-step explanation:

  • The price without discount (or without the coupon) is x.
  • The price with discount (or with coupon) is y.
  • y and x are both related: y is a percentage of x, specifically, y is 35% smaller than x. This means that y =0.65 x.

3 0
3 years ago
In the following expression, both A and B are variables that can take positive values.
krok68 [10]

I think the answer is A and C!

7 0
2 years ago
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