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3 years ago

12

A square measures 8 inches on each side. What is its area rounded off to the nearest square centimeter? (

1 answer:

Troyanec [42]3 years ago

5 0

The area of any rectangle is (length) x (width).
Your square is a rectangle, with length=width.

Using 1 inch = 2.54 centimeters, the square's area is

(8 x 2.54 cm) x (8 x 2.54 cm)

= (20.32 cm) x (20.32 cm) = 412.90⁺ cm²

Rounded to the nearest cm², it's 413 cm² .

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Fill this graph out , I don't understand how to convert a decimal into a percentage or fraction

kow [346]

In the first column the decimal is .26 and the percent is 26%. In the second column the fraction is 31/50 and the percent is 62%. In the last column the fraction is 9/20 and the decimal is .45. Hope this helps! ;)

6 0

3 years ago

Read 2 more answers

What “r” is equal to

ExtremeBDS [4]

2080 = π x r^2

2080/π = r^2

root of 2080/π = r

r is approximately 25.7

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3 years ago

1.) Some banks charge a fee on savings accounts that are left inactive for an extended period of time. The equation y = 5000 * (

oee [108]

Answer:

a. The initial amount of money that was left in this savings account was of 5000.

b. Decrease of 2% each year.

Step-by-step explanation:

Exponential function:

An exponential function, with an initial value of A(0), and a decay rate of r, as a decimal, is given by:

$A(t) = A(0)(1-r)^t$

In this question, we have:

$y = 5000*(0.98)^x$

a. What was the initial amount of money that was left in this savings account?

This is y(0) = 5000

The initial amount of money that was left in this savings account was of 5000.

b. What is the percent of change each year in this savings account?

First as a decimal.

1 - r = 0.98

r = 1 - 0.98

r = 0.02

So a decrease of 2% each year.

7 0

3 years ago

Caroline resting heart is 52 beats per minute (bpm). When she starts running her heart rate increases 1.25% each second until it

horsena [70]

Answer:74.55 beat per minute

Step-by-step explanation:

Given

Heart beat is 52 beat per minute

i.e. $B=\frac{52}{60}$ beat per sec

If heart rate is increases 1.25 % each sec

suppose B is the heart beat at first second therefore heat beat at 2 nd second

$B_2=B+1.25 \% B$

$B_2=B(1+1.25 \% )$

For 3 rd sec

$B_3=B(1+1.25\%)+1.25\%B(1+1.25\%)$

$B_3=B(1+1.25\%)^2$

similarly for 3 sec

$B_{30}=B(1+1.25\%)^{29}$

$B_{30}=1.433B$

$B_{30}=1.242\ \text{beat per second }$

$B_{30}=74.55\ \text{beat per minute}$

4 0

3 years ago

Simplify the expression -2( p + 4) 2 - 3 + 5p

solmaris [256]

Answer:

p - 19

Step-by-step explanation:

multiply the bracket by -2*2(-4) , -4p - 16 - 3 +5p , 5p - 4p= p & -3 - 16=-19

so exp is p - 19

8 0

3 years ago