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3 years ago

Is the constant rate increasing or deceasing

Mathematics

2 answers:

DedPeter [7]3 years ago

4 0

Increasing i’m pretty sure

nadezda [96]3 years ago

3 0

Increasing most likely

You might be interested in

How do you find the square root of a negative number? Explain the process

IrinaK [193]

Answer:

A. $\sqrt{-64}$ = 8i

B. 8i + 5i = 13i

C. 8i - 5i = 3i

D. 8i x 5i = -40

Step-by-step explanation:

A. The square root of any negative number would lead to a complex number. Complex numbers are number which consist a complex part denoted by i.

-1 = $i^{2}$

$\sqrt{-1}$ = $\sqrt{i^{2} }$ = i

Example: 1. What is the square root of -64?

square root of -64 = $\sqrt{-64}$

= $\sqrt{-1 *64}$

= $\sqrt{-1}$ x $\sqrt{64}$

= i x 8

= 8i

$\sqrt{-64}$ = 8i

2. find the square root of -25.

$\sqrt{-25}$ = $\sqrt{-1*25}$

= 5i

B. To add two complex numbers, they are considered as algebraic expressions.

Example, the sum of 8i and 5i can be determined as;

8i + 5i = 13i

C. To add two complex numbers, they are considered as algebraic expressions.

Example, the subtraction of 8i and 5i can be determined as;

8i - 5i = 3i

D. To multiply two complex numbers, the complex part is considered.

Example, determine the product of 8i and 5i.

8i x 5i = 8 x 5 x i x i

= 40 $i^{2}$

= -40 (∵ $i^{2}$ = -1)

8i x 5i = -40

6 0

4 years ago

Which value for y makes the sentence true? 8 - y = 6 - 1 A. 4 B. 5 C. 1 D. 3

Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

3 0

3 years ago

PLEASE HELP!!!!

wel

Answer:

Mike is not right

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its surface areas is equal to the scale factor squared

Let

z----> the scale factor

x----> surface area of the enlarged rectangular prism

y-----> surface area of the original rectangular prism

$z^{2}=\frac{x}{y}$

In this problem we have

$z=2$

substitute

$2^{2}=\frac{x}{y}$

$4=\frac{x}{y}$

$x=4y$

The surface area of the enlarged rectangular prism is 4 times the surface area of the original rectangular prism

therefore

Mike is not right

<em>Verify with an example</em>

we have a rectangular prism

$L=5\ m$

$W=2\ m$

$H=3\ m$

The surface area of the prism is equal to

$SA=2(LW)+(2L+2W)H$

substitute the values

$SA=2*(5*2)+(2*5+2*2)*3=62\ m^{2}$

If he doubles each dimension of any rectangular prism

then

the new dimensions will be

$L=5*2=10\ m$

$W=2*2=4\ m$

$H=3*2=6\ m$

The new surface area will be

$SA=2*(10*4)+(2*10+2*4)*6=248\ m^{2}$

$248/62=4$

therefore

The surface area of the enlarged rectangular prism is 4 times the surface area of the original rectangular prism

8 0

3 years ago

Plz help me toofree your my only hope

grandymaker [24]

Area of a circle = πr²

Area of a circle = 3.14 x 11² = 379.94 in²

Area painted in blue = 379.94 ÷ 2 = 189.97 in²

Area painted in purple = 189.97 in²

--------------------------
Answer: 189.97 in²
--------------------------

4 0

3 years ago

What is the area, in square centimeters, of a circle that is 8 centimeters

Shalnov [3]

Answer: 8=201.06

4=50.27

Step-by-step explanation: What I mean by this is that if the radius (the distance from the center of the circle to the edge of the circle ) is 8 then the area of the circle is 201.06 and if the radius of the circle is 4 then the area of the circle is 50.27

5 0

3 years ago