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3 years ago

What is the missing part of the solution?

Mathematics

2 answers:

hoa [83]3 years ago

4 0

9514 1404 393

Answer:

6.64

Step-by-step explanation:

Perhaps you have ...

$3.4\times10^{-20}+5.4\times10^{-19}+9\times10^{-20}=\underline{\ \ \ \ }\times10^{-19}\\\\=(0.34+5.40+0.90)\times10^{-19}=\boxed{6.64}\times10^{-19}$

_____

Here, it is convenient to factor out 10^-19. If you like, a calculator or spreadsheet can figure this for you.

dangina [55]3 years ago

3 0

Answer:

Answer:

6.64

Step-by-step explanation:

Perhaps you have ...

3.4 x 10 20 -19 +5.4 x 101 +9 x 101 -20 = x 1

= (0.34 +5.40 + 0.90) x 107 -19

6.64 x 10

Here, it is convenient to factor out 10^-19. If you like, a calculator or spreadsheet can figure this for you.

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If the areas of the given pairs of shapes are equal, find the value of x.

den301095 [7]

Answer:

$x = 8cm$

Step-by-step explanation:

we are given a square and rectangle.we want to figure out x which is the width of the rectangle. we are also given a condition i.e

the area of the square equal to the area of the rectangle

therefore,

$\displaystyle \rm A _{square } = A _{rect}$

recall the formula of the area of square and rectangle so,

$\displaystyle {s}^{2} = lw$

now assign variables

$s \implies16cm$
$l \implies32cm$
$w \implies x$

thus substitute:

$\displaystyle 32cmx = {16cm}^{2}$

simplify square:

$\displaystyle 32cmx = 256cm^2$

divide both sides by 32:

$\displaystyle \boxed{x = 8cm}$

and we're done!

3 0

3 years ago

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How do I do this <br> X+y=-4<br> 3x-6y=15

avanturin [10]

Answer:

x=-1, y=-3. (-1, -3).

Step-by-step explanation:

x+y=-4

3x-6y=15

---------------

x=-4-y

3(-4-y)-6y=15

-12-3y-6y=15

-12-9y=15

9y=-12-15

9y=-27

y=-27/9

y=-3

x+(-3)=-4

x-3=-4

x=-4+3

x=-1

8 0

3 years ago

The equation of a line is x + 5y = 12.

Svet_ta [14]

Answer: C: 12/5

Step-by-step explanation:

y intercept is where x is 0, so set x equal to 0

0+5y=12

y=12/5

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3 years ago

Farmer John can plant 3/8 of row of crops in 1/8 of his regular work day. If Farmer John works for 8 hours a day. How many days

slava [35]

The answer is 4 days

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3 years ago

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FrozenT [24]

I believe the answer is C.

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4 years ago

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