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Phoenix [80]
2 years ago
15

What is the product of 4.5 × 10-5 and 2.4 × 10-2?

Mathematics
2 answers:
nikitadnepr [17]2 years ago
4 0
4.5 • 10-5 = 40

2.4 • 10-2 = 22
MissTica2 years ago
4 0
Answer is foty n twentytwo
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Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC =16 and DC=5 what is the length of BC in the simplest ra
Nana76 [90]

The length of BC is 4 \sqrt{5}.

Solution:

Given ABC is a right triangle.

AC is the hypotenuse and BD is the altitude.

AB and BC are legs of the triangle ABC.

AC = 16 and DC = 5

<u>Leg rule of geometric mean theorem:</u>

$\frac{\text { hypotenuse }}{\text { leg }}=\frac{\text { leg }}{\text { part }}$

$\Rightarrow \frac{AC}{BC}=\frac{BC}{DC}$

$\Rightarrow \frac{16}{x}=\frac{x}{5}$

Do cross multiplication.

\Rightarrow  16\times 5 = x\times x

\Rightarrow  80= x^2

\Rightarrow  16\times 5= x^2

Taking square root on both sides.

\Rightarrow  \sqrt{16\times 5} = \sqrt{x^2}

\Rightarrow  \sqrt{4^2\times 5} = \sqrt{x^2}

square and square roots get canceled, we get

\Rightarrow  4\sqrt{ 5} = x

The length of BC is 4 \sqrt{5}.

7 0
3 years ago
In integers how to know if minus (-) 1 upon 2 is greater or minus (-) 1 is greater???​
kogti [31]

Answer:

1/2 is 0.5 so -1/2=-0.5

-0.5 is greater than -1

use a number line

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
2/3g + 1/2g = 14 multi step equations, i need help knowing the steps
MaRussiya [10]
Find the common denominator

It is 6

Multiply everything by 6

2/3*(6)= 4g

1/2 *(6)= 3g

14*(6)= 84

4g +3g = 84

7g= 84


g= 12
8 0
2 years ago
Alguém sabe como faz essas duas questões ?
joja [24]

Minha resposta: não.

7 0
3 years ago
Rewrite the expression as a single logarithm: <br> log 5 - log 7
Lady bird [3.3K]

Answer:

-0.146

Step-by-step explanation:

log 5 = 0.699

log 7 = 0.845

5 0
2 years ago
Read 2 more answers
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