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AysviL [449]
3 years ago
5

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

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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<br> VOLUME OF A SPHERE
Rina8888 [55]

Answer:

\displaystyle V = 972 \pi \ ft^3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Geometry</u>

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

  • V is volume
  • r is radius

Step-by-step explanation:

<u>Step 1: Define</u>

Radius <em>r</em> = 9 ft

<u>Step 2: Solve for V</u>

  1. Substitute in <em>r</em> [Volume of a Sphere Formula]:                                               \displaystyle V = \frac{4}{3} \pi (9 \ ft)^3
  2. [Volume] Evaluate exponents:                                                                         \displaystyle V = \frac{4}{3} \pi (729 \ ft^3)
  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

<em><u>Solution:</u></em>

<em><u>The growth function is given as:</u></em>

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 = ?

<em><u>Substituting we get,</u></em>

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

<em><u>If the number of stores continues to grow exponentially at the same​ rate, how many stores will there be in​ 2016?</u></em>

Therefore,

y = ?

a = 1147

r = 0.1594

t = 2000 to 2016 = 16 years

<em><u>Substituting we get,</u></em>

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
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