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3 years ago

What is the first step when applying properties of operations to divide 73.85 by 4.1?

Mathematics

1 answer:

Alchen [17]3 years ago

5 0

Answer:

B. Multiply the divisor and dividend by 100.

Step-by-step explanation:

Multiply by 100 to get rid of the decimal

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85.38 divided by 4 <br> pls tell me how to do it in long divison pls I need help really!!!

Mariana [72]

Answer:

4269

———— = 21.34500

200

Step-by-step explanation:

Step 1 :

4269

Simplify ————

Equation at the end of step 1 :

4269

———— ÷ 4

Step 2 :

4269

Divide ———— by 4

Final result :

4269

———— = 21.34500

200

Processing ends successfully

plz mark me as brainliest :)

8 0

3 years ago

Read 2 more answers

If tanA+sinA=m and tanA-sinA=n.prove that m^2-n^2=4√mn

mash [69]

Let $a=\tan A$ and $b=\sin A$ . Then

$m^2-n^2=(a+b)^2-(a-b)^2=(a^2+2ab+b^2)-(a^2-2ab+b^2)=4ab$

$\implies m^2-n^2=4\tan A\sin A$

and

$mn=(a+b)(a-b)=a^2-b^2$

$\implies4\sqrt{mn}=4\sqrt{\tan^2A-\sin^2A}$

The expression under the square root can be rewritten as

$\tan^2A-\sin^2A=\dfrac{\sin^2A}{\cos^2A}-\sin^2A=\sin^2A\left(\dfrac1{\cos^2A}-1\right)=\sin^2A(\sec^2A-1)$

Recall that

$\sin^2A+\cos^2A=1\implies\tan^2A+1=\sec^2A$

so that

$\tan^2A-\sin^2A=\sin^2A\tan^2A$

and assuming $\sin A>0$ and $\tan A>0$ , we end up with

$4\sqrt{\tan^2A-\sin^2A}=4\tan A\sin A$

so that

$m^2-n^2=4\sqrt{mn}$

as required.

5 0

3 years ago

What is the correct factorization of<br> 5(x + 2) – 3x(x + 2)?

ryzh [129]

(5x + 10) - (3x^2 + 6x)

5 0

3 years ago

Wiat number should be added to both sides of the equation to complete the square? X^2+x=11

Ivahew [28]

Answer:

add 1/4 to each side

Step-by-step explanation:

x^2+x=11

We take the coefficient of the x term

Then divide it by 2

1/2

Then square it

(1/2) ^2 = 1/4

Add this to both sides of the equation

x^2 + x + 1/4 = 11+1/4

(x+1/2)^2 = 11 1/4

7 0

3 years ago

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2. The direct distance between city A and city B is 200 miles. The direct distance

Misha Larkins [42]

Answer:

Step-by-step explanation:

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3 years ago