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3 years ago

6

Twenty percent of the town's population is over the age of 65. If there are 320 residents over the age of 65, what is the town's

total population?

2 answers:

alekssr [168]3 years ago

5 0

Answer:

65

Step-by-step explanation:

I think. hope this hepls

padilas [110]3 years ago

5 0

Answer:

There are 1600 residents.

Step-by-step explanation:

0.2 times x = 320 divide by 0.2

x = 1600

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The original value of a car is $18,000, and it depreciates (loses value) by 15% each year. What is the value of the car after th

Sliva [168]

A reduction of 15% per year means 100-15=85% reducing factor.
1st year: 0.85×18000=$15300.
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So after 3 years the value of the car is $11054.25 or $11054 to the nearest dollar.

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3 years ago

Charlie has $3.15 in his bank which contains only nickels and dimes. There are 9 more nickels than dimes. Find the number he has

Brrunno [24]

Charlie has $3.15 in his bank which contains only nickels and dimes. There are 9 more nickels than dimes. Then Number of dimes =18

and Number of nickels =27

<h3>What is basic algebra ?</h3>

Mathematical expressions can be used to depict situations or issues, and algebra is the field of mathematics that does this. For a mathematical expression to have meaning, it needs to include variables like x, y, and z as well as mathematical operations like addition, subtraction, multiplication, and division. Algebra is used in every area of mathematics, including coordinate geometry, calculus, and trigonometry. A straightforward algebraic expression is 2x + 4 = 8.

Given that : Charlie has $3.15 in his bank which contains only nickels and dimes. There are 9 more nickels than dimes

Let d be the number of dimes

d + 9 = Number of nickels

A dime = 0.1

nickle is = 0.05

0.1d + 0.05d + 0.45 = 3.15

0.15d = 2.7

d = 18

Number of dimes =18

Number of nickels = 18 + 9

=27

To learn more about basic algebra visit :

brainly.com/question/15167098

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2 years ago

Find the surface area of the right triangular prism (above) using its net (below).

a_sh-v [17]

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Answer:

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Step-by-step explanation:

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3 years ago

What is the center of the circle that has a diameter whose endpoints are (9, 7) and (-3, -5)?

emmasim [6.3K]

Answer: OPTION B.

Step-by-step explanation:

Given the endpoints of the diameter of the circle, we need to find the midpoint, which is the center of the circle.

The following formula is used to calculate the Midpoint:

$M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Given the endpoints of the diameter of the circle:

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We can identify that:

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Then, we can substitute these values into the formula:

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Therefore, the center of the circle is: $(3,1)$

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3 years ago