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2 years ago

How do you write an algebraic expression for 42 decreased by twice some number

Mathematics

1 answer:

Shalnov [3]2 years ago

8 0

42 decreased by (-) twice (2 x ?) some number (n)

42 - 2n

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Hannah and her three brothers equally split the cost of a $379 gift for their parents. How much did each sibling pay?

-Dominant- [34]

Answer:

$126.33

Step-by-step explanation:

$379/3 = $126.33

5 0

2 years ago

What is the value of i^20+1?

ICE Princess25 [194]

You know

$i^2=-1$

Squaring both sides gives

$(i^2)^2=(-1)^2\implies i^4=1$

Then raising both sides to any integer power $n$ gives

$(i^4)^n=1^n\implies i^{4n}=1$

That is, any power of $i$ where the power is a multiple of 4 will always be equal to 1.

$i^{20}+1=1+1=2$

But perhaps you mean to write 20+1 as the exponent, in which case

$i^{20+1}=i^{20}i=i$

8 0

3 years ago

"What is Limit of h (x) as x approaches 10 plus?"

Zepler [3.9K]

As <em>x</em> → 10 from above, <em>h(x)</em> is steadily approaching 18.5.

8 0

2 years ago

Quick I need help 23 and 24 easy seventh grade math

Alekssandra [29.7K]

Answer:-14, -26

Step-by-step explanation:

13-4=9

4-9=-5

From here you can see that the pattern is -9

-5-9=-14

23. is -14

16-2=14

2-14=-12

From here you can see that the pattern is -14

-12-14=-26

24. is -14

6 0

3 years ago

What is the distance between (4,2) and (-1,-3)

Sati [7]

<h2>Solving for the Distance between two Points</h2><h3>Answer:</h3>

$5 \sqrt{2}$ or $7.071$

<h3>Step-by-step explanation:</h3>

<em>Please refer to my answer from this Question to know more about distances between two points: <u>brainly.com/question/24629826</u></em>

Given:

$(4,2)$

$(-1,-3)$

Solving for the Distance:

$\sqrt{(4-(-1))^2 +(2 -(-3))^2} \\ \sqrt{(4 +1)^2 +(2 +3)^2} \\ \sqrt{5^2 +5^2} \\ \sqrt{25 +25} \\ \sqrt{50} \\ \sqrt{25 \cdot 2} \\ 5 \sqrt{2}$

<u>Note:</u>

$5 \sqrt{2} \approx 7.071$

4 0

3 years ago