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4 years ago

Find the percent change as an increase or decrease to 8 inches to 24 inches

2 answers:

7 0

New value=24
Original value=8

Change in value= New value-original value
Change in value=24-8
Change in value=16
%increased=change in value/original value x100%
%increased= 16/8x100
%increased=200%

Doss [256]4 years ago

4 0

Think of the number 8 as 100%.

What multiplies 8 to 24?

3.

100% x 3 = 300% increase

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Which value must be added to the expression x^2+x to make it a perfect-square trinomial? A.1/4 B.1/2 C.1 D.4

barxatty [35]

Hello from MrBillDoesMath!

Answer:

Choice A, 1/4

Discussion:

Consider the perfect square

(x + a)^2 = x^2 + (2a)x + a^2

The constant term (a^2) equals 1/2 the coefficient of x (i.e. 2a), squared.

Let's apply this idea to x^2 + x

x^2 + x = => as 2 * 1/2 = 1

x^2 + ( 2 * 1/2)x =

( x^2 + (2* 1/2)x + ( 1/2) ^2 ) - (1/2) ^2 =

as constant term to add is 1/2 coefficient of x (that is, 1/2) and

(1/2)^2 - (1/2)^2 = 0

(x + 1/2) ^ 2 - (1/2)^2

In other words add the constant (1/2)^2 = 1/4, which is Choice A.

Thank you,

MrB

7 0

3 years ago

jada walks up to a tank of water that can hold up to 10 gallons. When it is active, a drain empties water from the tank at a con

alexdok [17]

Answer:-2/3 gallon per minute

-2/3 gallon per minute

Step-by-step explanation:

6 0

3 years ago

Plzz help meeee 1+1=?

BabaBlast [244]

2 is the answer to 1+1

4 0

4 years ago

Read 2 more answers

Find the sum of the exterior angles of a 41-gon.<br> *

zheka24 [161]

The answer should be 14

5 0

3 years ago

Find angle ADB of the equation

Aloiza [94]

Answer:

$m\angle ADB = 59\°$ .

Step-by-step explanation:

Given:

$\angle BDC = 31\°$

We need to find $\angle ADB$ .

Solution:

Now we can see that given figure is a rectangle with diagonals drawn in it.

So by properties of rectangle which states that;

"All angles of a rectangle are 90°."

So we can say that;

$\angle A = \angle B = \angle C = \angle D = 90\°$

But

$\angle D = \angle BDC + \angle ADB$

Substituting the values we get;

$31\°+\angle ADB = 90\°$

Subtracting both side by by 31 we get;

$31\°+\angle ADB -31\°= 90\°-31\°\\\\m\angle ADB = 59\°$

Hence $m\angle ADB = 59\°$ .

8 0

4 years ago