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1 year ago

Additive inverse of -0.5

Mathematics

1 answer:

Veseljchak [2.6K]1 year ago

4 0

Answer:

0.5

Step-by-step explanation:

If you add 0.5 to -0.5, it will equal 0.

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The radius of a circle is 7 yards. What is the circle's area?

never [62]

Answer: 153.86

Step-by-step explanation:

a=nr^2

A= 3.14 * 49

A= 153.86

8 0

2 years ago

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A gold coin appreciated in value from $200.00 to $475.00 in 6 years. Find the yearly rate of appreciation. Show or explain all w

Travka [436]

Answer:

16%

Step-by-step explanation:

To solve this we are using the standard growth equation:

$y=a(1+b)^x$

Were

$y$ is the final value after $x$ years

$a$ is the initial value

$b$ is the growth factor (yearly rate of appreciation in our case) in decimal form

$x$ is the time in years

We know from our problem that gold coin appreciated in value from $200.00 to $475.00 in 6 years, so $y=475$ , $a=200$ , and $x=6$ .

Let's replace the values in our equation and solve for $b$ :

$y=a(1+b)^x$

$475=200(1+b)^6$

$\frac{475}{200} =(1+b)^6$

$2.375=(1+b)^6$

$\sqrt[6]{2.375} =\sqrt[6]{(1+b)^6}$

$1+b=\sqrt[6]{2.375}$

$b=\sqrt[6]{2.375}-1$

$b=0.155$

which rounds to

$b=0.16$

Since our appreciation rate is in decimal form, we need to multiply it by 100% to express it as percentage:

0.16*100% = 16%

We can conclude that the yearly appreciation rate of our gold coin is approximately 16%

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2 years ago

Can someone please help me?

professor190 [17]

Answer:

The first one is D, and the second one is also D

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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2 years ago

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Is -8x + 10 = 2(5-4x) one solution

Basile [38]

The answer to this is true

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2 years ago