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jeka57 [31]
4 years ago
13

Scientific notation help!!20 points

Mathematics
2 answers:
Assoli18 [71]4 years ago
8 0

Answer:

5×10 to the tenth power

Step-by-step explanation:

(9×10^10)-(4×10^10)

remove the parenthesis

9×10^10-4×10^10

then you need to collect like terms so you subtract 9-4

and get 5×10^10

final answer:5×10 to the tenth power

vodka [1.7K]4 years ago
5 0

Answer:

5 * 10^10

Step-by-step explanation:

(9 * 10^10) - (4 * 10^10)

If the * 10^x are both the same then just take the numbers away.

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What is the value of x for the following equation? 1/4x-1=3/4x-5
blsea [12.9K]

Answer:

c. x = 8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
HELP PLEASE THANK YOU SO MUCH ALSO IF YOU DON'T MIND EXPLAINING! ONCE AGAIN THANK YOU SO MUCH!!
bija089 [108]

I think the greatest possible starting number would be 1,214,449. If it was any higher, like 1,214,450, then the number would round up to 1,214,500, and you don't want that.

Hopefully this helps! Let me know if you have any more questions.

8 0
3 years ago
The width of a rectangle is (x+1) and the length is (x-6). What is the length and width of the rectangle if the area is 30 squar
jolli1 [7]

Answer:

The length of the rectangle (l) = 3 feet

The width of the rectangle (W) =  10 feet

Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given that the width of the rectangle  = (x+1) feet</em>

<em>Given that the length of the rectangle = ( x-6) feet</em>

<em>The area of the rectangle = 30 square feet</em>

<u><em>Step(ii):-</em></u>

We know that the area of the rectangle

                = length ×width

    30   = ( x+1)(x-6)

    30   = x² - 6x + x -6

⇒ x² - 5 x - 6 = 30

⇒ x² - 5 x - 6 - 30 =0

⇒ x² - 5 x - 36 =0

 x² - 9 x +4x - 36 =0

   x (x-9) +4 ( x-9) =0

   ( x+4 ) ( x-9) =0

     ( x+4 ) =0 and  ( x-9) =0

     x =-4 and x =9

<u><em>Step(iii):-</em></u>

we have to choose x =9

     The length of the rectangle (l) =  x-6 = 9-6 =3

      The width of the rectangle (W) =  x+1 =  9 +1 = 10

<u><em>Final answer:-</em></u>

The length of the rectangle (l) = 3 feet

The width of the rectangle (W) =  10 feet

5 0
3 years ago
Select the quadratic function with a graph that has the following features. x-intercept at (8,0) y-intercept at (0,-32) maximum
Basile [38]

Answer:

The correct option is C.

Step-by-step explanation:

The function has axis of symmetry at x=6, it represents that the parabola is along the x-axis and the standard form of parabola is

y=a(x-h)^2+k

Where, a is scale factor and (h,k) is vertex.

The maximum or minimum value of a quadratic function is the vertex of parabola. So, vertex of parabola is (6,4).

y=a(x-6)^2+4

The y-intercept of the function is (0,-32)

-32=a(0-6)^2+4

-32-4=36a

-36=36a

a=-1

Therefore required equation of parabola is

y=-(x-6)^2+4

y=-(x^2-12x+36)+4

y=-x^2+12x-36+4

y=-x^2+12x-32

Therefore option C is correct.

4 0
3 years ago
49x^2 -7=93<br> Show me step by step please?
Galina-37 [17]

Answer:

<u>Exact form:</u> 10/7 , 10/7

<u>Mixed number form:</u> 1 3/7, -1 3/7

Step-by-step explanation:

5 0
3 years ago
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