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3 years ago

11

You increase the size of a page by 30%30%. Then you decrease it by 30%30%. What is the size of the page now?

1 answer:

Orlov [11]3 years ago

8 0

Lets use 1 to solve this problem because it is easiest to show.

Multiply 1 by 1.3 for a 30% increase (1*1.3=1.3).

Then multiply 1.3 by .7 for a 30% decrease. (1.3*.7=.91)

Therefore the page had a 9% reduction from its original size or is 91% of its original size.

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The endpoints of a diameter of a circle are (4,-2) and (3,6). Find the area of the circle in terms of pi

Vinil7 [7]

The endpoints of a diameter of a circle are (4,-2) and (3,6). The area of the circle in terms of pi is 65pi
First, is to get the length of the diameter by getting the distance of the two points: (4, -2) and (3, 6)

dis = sqrt( (x2-x1)^2 + (y2-y1)^2)
dis = sqrt( (3-4)^2 + (6--2)^2 )
dis = sqrt( 1 + 64 )
dis = sqrt(65)

Next, is to find the area of the circle:
A = pi * r^2
A = pi * (sqrt(65))^2
A = 204.20 square units

4 0

3 years ago

Select the correct answer. log(2x-100) = 3<br> What is the solution to this equation?

Vinil7 [7]

Answer:

550

Step-by-step explanation:

Rewrite in exponential form:

10^3=2x-100

Solve for x:

1000= 2x-100

2x=1100

x=550

3 0

3 years ago

Read 2 more answers

Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes o

zavuch27 [327]

Answer:

The number of days are independent and the total number of minutes are dependent.

The required model for the situation is $m=25d$

The table is shown below:

Step-by-step explanation:

Consider the provided information.

Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes of reading.

We need to determine which variable is independent and which is dependent.

Here, the number of days are independent and the total number of minutes are dependent.

If he spends 25 minutes each day. So the total number of minutes in d days are:

$m=25d$

The required model for the situation is $m=25d$

Now make the table which showing the number of minutes spent reading over 7 days.

Substitute the value of d from 1 to 7 in $m=25d$

Number of days(D) Minutes(M)

1 25

2 50

3 75

4 100

5 125

6 150

7 175

3 0

3 years ago

Archy [21]

The answer to this is letter A.

8 0

4 years ago

Work out, giving your answer in its simplest form:

ratelena [41]

Answer:

7 $\frac{3}{4}$

Step-by-step explanation:

2 $\frac{1}{4}$ + 5 $\frac{1}{2}$ = 2+5=7, $\frac{1}{4}$ + $\frac{1}{2}$ = $\frac{3}{4}$

= 7 $\frac{3}{4}$

7 0

3 years ago

Read 2 more answers