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2 years ago

Scientific notation is written in the form a*10^n. What must be true about the a value?

Mathematics

2 answers:

Rama09 [41]2 years ago

8 0

Answer:

It has to be a single digit between 1 and 10

-Dominant- [34]2 years ago

4 0

It has to be a single digit between 1 and 10

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He floor of a moving van is 3 feet off of the ground. The ramp into the van makes a 12° angle with the ground. About how long is

soldier1979 [14.2K]

Given :

Hight of the van from the ground, h = 3 feet.

The ramp into the van makes a 12° angle with the ground.

To Find :

How long is the ramp.

Solution :

Let, length of ramp is l .

So, height of ramp in terms of length is given by :

$h = l \times sin\ 12^o\\\\l = \dfrac{h}{sin \ 12^o}\\\\l = \dfrac{3}{sin \ 12^o}\\\\l = 14.429 \ feet$

Hence, this is the required solution.

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2 years ago

To get the echo of a positive integer, we write it twice in a row without a space. For example, the echo of 2022 is 20222022. Is

Lynna [10]

The echo number 20222022202220222022 is the perfect square of 4496890281.

<h3>What echo number is a perfect square</h3>

An echo number has a perfect square if its square root is also a natural number. After some iterations we found that echo number 20222022202220222022 is a perfect square:

$\sqrt{20222022202220222022} = 4496890281$

The echo number 20222022202220222022 is the perfect square of 4496890281. $\blacksquare$

To learn more on natural numbers, we kindly invite to check this verified question: brainly.com/question/17429689

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2 years ago

What are the solutions to the equation 3(X -4)(X +5) =0

cestrela7 [59]

Answer should be: X = 4, -5

4 0

2 years ago

Let a and b be non-zero integers. Which of the following is always true about the ratio ?

mezya [45]

C. It is always a rational number. You cannot determine its sign without knowing the values of a and b.

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3 years ago

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4/8 < x < 65% what value of x makes the inqulity true?

9966 [12]

Answer:

D) √0.302

Step-by-step explanation:

1. The inequality 4/8 < x < 65% means that that the value of x is more than 0.5 but less than 0.65. Let's go through each answer choice.

$\frac{2}{5}$
$0.4$
A) can't be the answer because 2/5 (or 0.4) is less than 0.5

$0.017$
B) can't be the answer because 0.017 is less than 0.5

$1.062$
C) can't be the answer because 1.062 is more than 0.65

$\sqrt{0.302}$
$\sqrt{0.302}$ ≈ $0.55$
D) is the answer because the square root of 0.302 (or approximately 0.55) is more than 0.5 but less than 0.65.

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2 years ago

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