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2 years ago

What is the product of 2.5 × 10−15 and 3.9 × 1026?

Mathematics

1 answer:

miskamm [114]2 years ago

6 0

Answer:

40014

Step-by-step explanation:

2.5 × 10=25 3.9 × 1026=

25-15= 4001.4

4001.4 × 10= 40014

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Im so confused. :/ Anyone?

ArbitrLikvidat [17]

First one = 9x3=27

Second one 12x9=108

3rd one = 3x4=12

Idk what that last one is

7 0

3 years ago

Find the inverse of the following function. Then prove they are inverses of one another.

solmaris [256]

Answer: $\dfrac{x^2+1}{2}$

Step-by-step explanation:

Given

$f(x)=\sqrt{2x-1}$

We can write it as

$\Rightarrow y=\sqrt{2x-1}$

Express x in terms of y

$\Rightarrow y^2=2x-1\\\\\Rightarrow x=\dfrac{y^2+1}{2}$

Replace y be x to get the inverse

$\Rightarrow f^{-1}(x)=\dfrac{x^2+1}{2}$

To prove, it is inverse of f(x). $f(f^{-1}(x))=x$

$\Rightarrow f(f^{-1}(x))=\sqrt{2\times \dfrac{x^2+1}{2}-1}\\\\\Rightarrow f(f^{-1}(x))=\sqrt{x^2+1-1}\\\\\Rightarrow f(f^{-1}(x))=x$

So, they are inverse of each other.

8 0

2 years ago

Write an equation of the line that passes through (5,9) and is perpendicular to the line y=-1/3x+1

777dan777 [17]

Perpendicular = opposite sign and reciprocal slope
Slope would be 3
Y = 3x + b, plug in point
9 = 3(5) + b, b = -6
Solution: y = 3x - 6

7 0

2 years ago

Please help me asap

Darya [45]

L = rc
= 26.9 * 9*3.14 / 5
= 152.04 to nearest 1/100

8 0

2 years ago

Find the point-slope form of the equation of the line that passes through the given point and has the indicated slope. Point: (-

zzz [600]

Answer:

slope : 3

y + 3 = 3(x + 5)

y + 3 = 3x + 15

y = 3x + 12

5 0

2 years ago