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Svetllana [295]
3 years ago
12

I need help. If you can explain it, show me!!

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
3 0
In every case the larger number is rounded up to 2E13.
Divide this by 3E8:

2E13 = 200000E8
--------   --------------- is approx equal to 70000 (dollars).
 3E8         3E8
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Salma purchased a prepaid phone card for $15 Long distance calls cost 6 cents a minute using this card. Salma used her card only
Fiesta28 [93]

Answer:

m=17

Step-by-step explanation:

$15 minus $0.14(# minutes) = $12.62

 

15 - .14m = 12.62

 

.14m = 15 - 12.62

 

.14m = 2.38

 

m = 2.38/.14

 

m = 17 minutes

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3 years ago
So,
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2 years ago
What is 3/5 equivalent to
REY [17]
Multiply both the numerator and the denominator by the same number and you'll get an equivalent fraction. For example, 3/5 times 2/2 equals 6/10, which is an equivalent fraction to 3/5. Multiply both by 8, and you have 24/40, which is also equivalent to 3/5. I hope this helped you tremendously! <span />
7 0
3 years ago
Which percent is represented by the diagram below? 2 area models with 100 squares. In the first model, 100 squares are shaded. I
olga_2 [115]

Answer:

125%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Pls help i am on a timer
stich3 [128]

Answer:

x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Step-by-step explanation:

Given;

x² - 2x - 1 = 0

Solve by completing the square method;

⇒ take the constant to the right hand side of the equation.

x² - 2x = 1

⇒ take half of coefficient of x = ¹/₂ x -2 = -1

⇒ square half of coefficient of x and add it to the both sides of the equation

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

(x-1)^2 = 1 + 1\\\\(x-1)^2 = 2\\\\

⇒ take the square root of both sides;

x-1 = +/- \ \ \sqrt{2} \\\\x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Therefore, option B is the right solution.

3 0
2 years ago
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