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faust18 [17]
3 years ago
8

Arnold takes 12 minutes to swim 10 lengths of a pool whose length is 50 meters. If he swims at a constant speed, how long does i

t take Arnold to swim 1 kilometer?
Mathematics
1 answer:
Phoenix [80]3 years ago
5 0
It will take him 240 min and if u convert that it will take him 4 hours
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Calculate the number of 1/2 Kg there are in 6 Kg​
Semmy [17]

Answer:

12, 1/2 Kg in 6 Kg

Step-by-step explanation:

6 divided by 1/2= 12

3 0
3 years ago
In a softball league, the male to female ratio is 5:6. If there are 165 members in the league, how many females are in the leagu
Sonja [21]

Answer:

197.1

Step-by-step explanation:

5 0
3 years ago
The annual interest on a $14,000 investment exceeds the interest earned on a $7000 investment by $595 . The $14,000 is invested
Stella [2.4K]

Answer:

x= 8.00 Interest rate on $14000

y= 7.50 Interest rate on $7000

Step-by-step explanation:

Let interest rate of $14000 be x%

and Interest rate for $7000 be y %

According to the first condition

14000 * x% - 7000 * y% = 595

multiply by 100

14000x-7000y = 59500

/700

20x-10y=85.................(1)

II condition

x%=y%+0.5%

x=y+0.5

x-y=0.5..................................(2)

solve (1) & (2)

20 x -10 y = 85 .............1

Total value

1 x -1 y = 0.50 .............2

Eliminate y

multiply (1)by 1

Multiply (2) by -10

20.00 x -10.00 y = 85.00

-10.00 x + 10.00 y = -5.00

Add the two equations

10.00 x = 80.00

/ 10.00

x = 8.00

plug value of x in (1)

20.00 x -10.00 y = 85.00

160.00 -10.00 y = 85.00

-10.00 y = 85.00 -160.00

-10.00 y = -75.00

y = 7.50

x= 8.00 Interest rate on $14000

y= 7.50 Interest rate on $7000

7 0
4 years ago
How long is 9/10 inches
stellarik [79]

-- It's exactly 10% shorter than 1 inch, and 92.5% shorter than 1 foot.

-- It's also approximately 0.01343 smoot (rounded). 

-- It's also approximately 2.286 centimeters, or 22.86 millimeters,
or 0.0000142 mile.

-- It's also approximately 0.000 000 000 000 000 002 418 light-year.

You see, "9/10 inch" is known and understood precisely wherever inches are
used in the world (everywhere throughout Liberia, Burma, and the USA) exactly
because "inch" is a unit that's exactly defined and agreed on in all those places. 
But when you come along and say "I don't know what an inch is, describe it to me
in terms of something else", then you throw people for a loop.

If you can tell us what other unit you want to measure with ... like a flower,
a finger, an animal, or something else that we're also familiar with, then
we'll compare "9/10 inch" to that item for you.  But that won't be exact,
because all of those things come in different sizes, and none of them has
a standard size that everybody agrees on.

8 0
3 years ago
(6x2 - 10x +9)+(-5x2 + 9x-5)=
arsen [322]

Answer:

x² - x + 4

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>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

(6x² - 10x + 9) + (-5x² + 9x - 5)

<u>Step 2: Simplify</u>

  1. Combine like terms (x²):                                                                                x² - 10x + 9 + 9x - 5
  2. Combine like terms (x):                                                                                  x² - x + 9 - 5
  3. Combine like terms (Z):                                                                                     x² - x + 4
6 0
3 years ago
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