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3 years ago

Is going from $8 to $10 a percent increase or a percent decrease?

Mathematics

2 answers:

Ilia_Sergeevich [38]3 years ago

8 0

Answer:

Percent Increase

Step-by-step explanation:

adelina 88 [10]3 years ago

6 0

Answer:

Increase by 25%

Step-by-step explanation:

the number 8 is increasing to 10

You might be interested in

What is the answer for 12 and 13

Rzqust [24]

Answer for #12 Is Length = 630FT & Width 335 FT
Answer for #13 is 4600 Items & 7800 Items. I have this workbook with the same problems :) Hope this helped :)

6 0

3 years ago

ritu can row downstream 20km in 2 hrs and upstream 4km in 2 hrs. find the speed of rowing in still water and the speed of the cu

Marina CMI [18]

Answer:

Speed of boat in still water is 6km/h

Speed of current is 4km/h

Step-by-step explanation:

We know speed = distance / time

Let the speed of boat in still water be x

Let the speed of current be y

Hence the speed of boat, down stream = $x+y$

Distance downstream = 20km

Time taken = 2 hours

We have

$x+y=\frac{20}{2}$

$x+y=10$ ......(1)

Speed of boat upstream = $x-y$

Distance upstream = 4

Time taken = 2

We have

$x-y=\frac{4}{2}$

$x-y=2$ ...(2)

Adding (1) & (2)

$2x=12$

$x=6$

Substituting in (1) we get

$y=4$

7 0

3 years ago

Describe what pie is and explain how it Is used in finding the circumference of a circle

irakobra [83]

Answer:

Step-by-step explanation:

Pi is the ratio of a circle's circumference to its diameter.

The circumference = π * the diameter of the circle (Pi multiplied by the diameter of the circle)

Hope this helps!

3 0

2 years ago

BRAINLIEST VOLUME OF A SPHERE

Rina8888 [55]

Answer:

$\displaystyle V = 972 \pi \ ft^3$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Volume of a Sphere Formula: $\displaystyle V = \frac{4}{3} \pi r^3$

V is volume
r is radius

Step-by-step explanation:

Step 1: Define

Radius r = 9 ft

Step 2: Solve for V

Substitute in r [Volume of a Sphere Formula]: $\displaystyle V = \frac{4}{3} \pi (9 \ ft)^3$
[Volume] Evaluate exponents: $\displaystyle V = \frac{4}{3} \pi (729 \ ft^3)$
[Volume] Multiply: $\displaystyle V = 972 \pi \ ft^3$

4 0

2 years ago

In 2000, a company had 1147 stores nationwide. By 2002, this total had grown to 1542. If the number of stores continues to gro

mr_godi [17]

12226 stores will be there in 2016

Solution:

The growth function is given as:

$y = a(1+r)^t$

Where,

y is the future value

a is the initial value

r is the growth rate

t is the number of years

From given,

In 2000, a company had 1147 stores nationwide

By 2002, this total had grown to 1542

Therefore,

y = 1542

a = 1147

t = 2000 to 2002 = 2 years

r = ?

Substituting we get,

$1542 = 1147(1+r)^2\\\\(1+r)^2 = \frac{1542}{1147}\\\\(1+r)^2 = 1.34437$

Taking square root of both sides

$1+ r = 1.1594\\\\r = 1.1594 - 1\\\\r = 0.1594$

If the number of stores continues to grow exponentially at the same rate, how many stores will there be in 2016?

Therefore,

y = ?

a = 1147

r = 0.1594

t = 2000 to 2016 = 16 years

Substituting we get,

$y = 1147(1 + 0.1594)^{16}\\\\y = 1147(1.1594)^{16}\\\\y = 1147 \times 10.6593\\\\y = 12226.3311 \approx 12226$

Thus 12226 stores will be there in 2016

4 0

3 years ago