What is the reason for each step in the solution of the equation?

Mathematics

2 answers:

eimsori [14]4 years ago

5 0

Answer:

i took the test the answer below is right hope i helped

given, addition ,division

Step-by-step explanation:

weeeeeb [17]4 years ago

3 0

Answer:

Given; Addition Property of Equality; Division Property of Equality

Step-by-step explanation:

The first blank restates the equation we are given. This is why the justification for it is "Given."

To get the second blank from the first one, we must add two to each side. The property that allows this is the addition property of equality.

To get the third blank from the second one, we must divide both sides by 3. The property that allows this is the division property of equality.

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katen-ka-za [31]

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3 years ago

Is three pounds bigger than 50 ounces

Elanso [62]

If you would like to know if 3 pounds is bigger than 50 ounces, you can calculate this using the following steps:

1 pound = <span>16 ounces</span>
3 pounds = 48 ounces < 50 ounces

The correct result would be: No, 3 pounds is less than 50 ounces.

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3 years ago

Solve for x:<br> (x2−2x)2−8 = 7(x2−2x)

Marrrta [24]

Answer:

x1= -2

x2= 1

x3= 4

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Consider the function on the interval (0, 2π). f(x) = 7 sin2(x) + 7 sin(x) (a) Find the open interval(s) on which the function i

-BARSIC- [3]

Answer with Step-by-step explanation:

Given

$f(x)=7sin(2x)+7sin(x)$

Differentiating both sides by 'x' we get

$14cos(2x)+7cos(x)=f'(x)$

Now we know that for an increasing function we have

$f'(x)>0\\\\14cos(2x)+7cos(x)>0\\\\2cos(2x)+cos(x)>0\\\\2(2cos^{2}(x)-1)+cos(x)>0\\\\4cos^{2}(x)+cos(x)-2>0\\\\(2cos(x)+\frac{1}{2})^2-2-\frac{1}{4}>0\\\\(2cos(x)+\frac{1}{2})^2>\frac{9}{4}\\\\2cos(x)>\frac{3}{2}-\frac{1}{2}\\\\\therefore cos(x)>\frac{1}{4}\\\\\therefore x=[0,cos^{-1}(1/4)]\cup [2\pi-cos^{-1}(1/4),2\pi ]$