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2 years ago

Scientific Notation 7.28 x 10^10

Mathematics

2 answers:

Vsevolod [243]2 years ago

7 0

Answer:

72800000000

Step-by-step explanation:

7.28 * 10^10 = 72800000000

Marrrta [24]2 years ago

3 0

Answer:

7.28 × 10^10 = 72800000000..

If this answer helps you plz mark as brainlist..

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57.63 is the Regular price. The discount is 10%. What;s the sales price.

Kipish [7]

57.63×0.9=51.867($51.87)

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2 years ago

Simplify: 39w^5 - 13w^5

Alenkinab [10]

Answer:

hello :

Step-by-step explanation:

39w^5 - 13w^5 = 13w^5 (3 - 1) = 26w^5

5 0

2 years ago

Find the f^-1(x) and it’s domain

borishaifa [10]

Answer:

$f^{-1}(x) = (x + 8)^2$

$x \ge -8$

Step-by-step explanation:

Given

$f(x) = \sqrt x - 8$

Solving (a): $f^{-1}(x)$

We have:

$f(x) = \sqrt x - 8$

Express f(x) as y

$y = \sqrt x - 8$

Swap x and y

$x = \sqrt y - 8$

Add 8 to $both\ sides$

$x + 8 = \sqrt y - 8 + 8$

$x + 8 = \sqrt y$

Square both sides

$(x + 8)^2 = y$

Rewrite as:

$y = (x + 8)^2$

Express y as: $f^{-1}(x)$

$f^{-1}(x) = (x + 8)^2$

To determine the domain, we have:

The original function is $f(x) = \sqrt x - 8$

The range of this is: $f(x) \ge -8$

The $domain$ of the $inverse$ function is the $range$ of the $original$ function.

<em>Hence, the domain is:</em>

$x \ge -8$

3 0

2 years ago

Please help me figure out this problem

tiny-mole [99]

Answer:

$f(g(x))=f\left(-\dfrac{3x+21}{5}\right)=x\\\\g(f(x))=g\left(-\dfrac{5}{3}x-7\right)=x$

Step-by-step explanation:

Fill in the given expressions and simplify.

$f(g(x))=f\left(-\dfrac{3x+21}{5}\right)=-\dfrac{5}{3}\left(-\dfrac{3x+21}{5}\right)-7\\\\=\left(-\dfrac{5}{3}\right)\left(-\dfrac{3x}{5}\right)-\left(\dfrac{5}{3}\right)\left(-\dfrac{21}{5}\right)-7\\\\=\dfrac{15x}{15}+\dfrac{5\cdot 21}{3\cdot 5}-7=x+7-7=x$

Going the other way, we have ...

$g(f(x))=\displaystyle -\frac{3\left(-\frac{5}{3}x-7\right)+21}{5}=-\frac{-5x-21+21}{5}=x$

5 0

2 years ago

Is (3,5) a solution of y>x-3?

Advocard [28]

Answer:

no it's not

Step-by-step explanation:

4 0

2 years ago