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ValentinkaMS [17]
3 years ago
11

1. Link took out a $160,000, 10-year term policy at age 45. The premium per $1,000 is $4.18. He will be 55 years old next year w

hen the premium per $1,000 will be $6.47. What is the amount of the increase?
Mathematics
1 answer:
vodka [1.7K]3 years ago
6 0
Hi there! To find the percent of change, you do change/original = x/100, because we are looking for the percent of change. The change is the amount between the two numbers and the original is the previous amount. 6.47 - 4.18 is 2.29. Plug in the values to get 2.29/4.18 = x/100. Cross multiply the values in order to get 229 = 4.18x. Now, divide each side by 4.18 to isolate the variable. When you do, you get 54.784689 or 54.8% when rounded to the nearest tenth. The amount of decrease is approx. 54.8%.
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Write and solve an equation of ratios:


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This is appropriate because h is greater than 9 ft.


cross-multiplying, we get 

9(99) ft^2 = 22*h*ft


Then h =40.5 ft (which is the height of the building)


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A square pyramid has a base length of 4 inches. The height of each triangular face is 12 inches. What is the surface area of the
Wittaler [7]

Answer:

The surface area of the given pyramid is 112 inches^{2}.

Step-by-step explanation:

Base length of the pyramid = 4 inches

Area of the base = length^{2}

                            = 4^{2}

                            = 16

Area of its base = 16 inches^{2}

Area of one of its triangular surface = \frac{1}{2} x base x height

                                 = \frac{1}{2} x 4 x 12

                                 = 2 x 12

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Area of all its four triangular surfaces = 4 x 24

                                                       = 96 inches^{2}

surface area of the pyramid = sum of areas of all its surfaces

                                               = 16 + 96

                                       = 112 inches^{2}

The surface area of the given pyramid is 112 inches^{2}.

8 0
3 years ago
How do you solve 90% of 20?
Marizza181 [45]
All you would do is multiply .9 by 20
.9*20=18

90% of 20 is 18
3 0
3 years ago
Utilizing the following graph, give the quadrant of point A.
tiny-mole [99]

Answer:

Quadrant 2

Step-by-step explanation:

The top right corner is Quadrant 1, the top left corner is Quadrant 2, the bottom left corner is Quadrant 3, and the bottom right corner is Quadrant 4.

The point A is in the top left corner, meaning that it's in Quadrant 2.

Hope this helps!

4 0
3 years ago
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