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klio [65]
3 years ago
15

There is approximately 3.3 x 10*8 people in the United States of America in 2018. The average person consumed about 3.4 x 10*2 m

illigrams of sodium each day. Approximately how much sodium was consumed in the USA in one day in 2018?
Mathematics
1 answer:
ELEN [110]3 years ago
3 0
(3.3 x 10^8) x (3.4 x 10^2) = 1.22 x 10^11
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What two numbers add to 15 and multiply to negative 312?
natima [27]
X + y = 15
xy = -312

     x + y = 15
x - x + y = -x + 15
           y = -x + 15

                                           xy = -312
                               x(-x + 15) = -312
                           x(-x) + x(15) = -312
                                 -x² + 15x = -312
                       -x² + 15x + 312 = 0
           -1(x²) - 1(-15x) - 1(312) = 0
                    -1(x² - 15x + 312) = 0
                                  -1              -1
                          x² - 15x + 312 = 0
                          x = -(-15) ± √((-15)² - 4(1)(312))
                                                  2(1)
                          x = 15 ± √(225 - 1248)
                                               2
                          x = 15 ± √(-1023)
                                         2
                          x = 15 ± 31.984i
                                         2
                          x = 7.5 ± 15.992
                          x = 7.5 + 15.992    or    x = 7.5 - 15.992
                          x = 23.492        or         x = -8.492

              x + y = 15
     23.492 + y = 15
   - 23.492        - 23.492
                    y = -8.492
              (x, y) = (23.492, -8.492)

                      or

              x + y = 15
     -8.492 + y = 15
   + 8.492         + 8.492
                   y = 23.492
             (x, y) = (-8.492, 23.492)

The two numbers that add up to 15 and mutliply to -312 are -8.492 and 23.492.
6 0
3 years ago
-5x^2=-500 what is the answer
omeli [17]

Answer:

x = ± 10

Step-by-step explanation:

- 5x² = - 500 ( divide both sides by - 5 )

x² = 100 ( take square root of both sides )

x = ± \sqrt{100} = ± 10

That is x = - 10 or x = 10

3 0
2 years ago
A beach volleyball court is 9 meters wide and 18 meters long. The rope used
HACTEHA [7]

Answer:

14.22

Step-by-step explanation: 1.58x9 meters=14.22 meters

7 0
2 years ago
Read 2 more answers
Cómo se escribe cinco millones novecientos veinticinco en número alguien me ayuda plis
Akimi4 [234]

Answer:

5,000,925

Step-by-step explanation:

1 million has 6 zeros after it.

7 0
2 years ago
If ab = c - d, which of the following is an expression for d in terms of a, b, and c?
horsena [70]
ANSWER

d =  - ab + c


EXPLANATION


The given expression is

ab = c - d

To find an expression for d in terms of a, b, and c, means we want to make d the subject of the relation.


This means that, we need to isolate d on one side of the equation while all other terms are on the other side.



We subtract from both sides of the equation to obtain,


ab - c = - d



We now divide through by -1, to get,



- ab  +  c = d


Or


d = - ab  +  c


The topic is change of subject
3 0
3 years ago
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