3 years ago

AthXL for School:

Mathematics

1 answer:

Arlecino [84]3 years ago

8 0

Answer:

$28.5

Step-by-step explanation:

14-6.5=7.5

7.5x$3.8=28.5

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There are 2.54cm in an inch, 12 inches in a foot, and 5,280 feet in a mile.which expression gives the number of centimeters in a

geniusboy [140]

Answer:

(2.54×12) ×5280

Step-by-step explanation:

Since there are 2.54cm in an inch, multiply 2.54 by 12 to find out how many cm there are in a foot. Then you multiply that by 5280

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3 years ago

In 1985, there were 285 cell phone subscribers in Arlington. The number of subscribers increased by 75% per year since 1985. Fin

ANTONII [103]

Answer:

The number of subscribers in 2008 is 110,845,988

Step-by-step explanation:

The number of cell phone subscribers in Arlington, in t years after 1985, can be modeled by the following equation.

$N(t) = N(0)(1+r)^{t}$

And which N(0) is the number of subscribers in 1985 and r is the rate it increases per year, as a decimal.

In 1985, there were 285 cell phone subscribers in Arlington.

This means that $N(0) = 285$

The number of subscribers increased by 75% per year since 1985.

This means that $r = 0.75$

$N(t) = 285(1.75)^{t}$

Find the number of subscribers in 2008.

2008 is 2008-1985 = 23 years after 1985. So we have to find N(23).

$N(23) = 285(1.75)^{23} = 110,845,988$

The number of subscribers in 2008 is 110,845,988

8 0

3 years ago

Jessie borrowed $1800 from the bank at a rate of 7.5% simple interest per year. Over the course of 4 years, how much interest di

cluponka [151]

$540
Explanation:
7.5% of 1800 is 135
135 • 4 = 540

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3 years ago

Solve 4(10x - 2) = 192

MAXImum [283]

Answer:

Step-by-step explanation:

4*10x=40x

4*2=8

40x-8=192

40x=192+8

=200

X= 200/40

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4 years ago

How many congruent sides does an equilateral triangle have?

RideAnS [48]

Answer:

3 congruent sides

4 0

3 years ago

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