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3 years ago

A number and its additive inverse, or opposite are considered what

2 answers:

7 0

Additive inverse. and additive inverse of a number “a” is the number that, when added to “a”, yields 0. this number is also known as the opposite (number), sign change, and negation. For a real number, it reverses its sign: the opposite to a positive number is negative, and the opposite to a negative number is positive. got it off quizlet LOL hope it helped b !!

zheka24 [161]3 years ago

4 0

Integers I think that’s what it is

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The circumference of a circle is 6.28 yards. What is the circles area

Nuetrik [128]

Answer:

Step-by-step explanation:

circumference=2πr=6.28

r=6.28/2π=3.14/π=3.14/3.14=1

area=πr^2=π×1²=π=3.14 units²

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4 years ago

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Rectangle H and J are similar. If the area of rectangle H is 176, What is the area of rectangle J?

Tanzania [10]

ratio will be same

$\\ \rm\Rrightarrow \dfrac{22}{176}=\dfrac{8.8}{J}$

$\\ \rm\Rrightarrow \dfrac{1}{7}=\dfrac{8.8}{J}$

$\\ \rm\Rrightarrow J=8.8(7)$

$\\ \rm\Rrightarrow J=61.6$

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3 years ago

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An open box is made from a 20 cm x 3 cm piece of tin by cutting a square from each corner and folding up the edges. The area of

Marta_Voda [28]

Answer:

Length of the final sides: 6 cm and 16 cm

Step-by-step explanation:

The lengths of the sides of the original box are

$L=20 cm\\W=10 cm$

Later, a piece of tin is cut out from each corner; the piece cut out has the shape of the square: we can call the length of its generic side x. Therefore, the dimensions of the box will now be:

$L'=L-2x\\W'=W-2x$

We also know that the area is

$A=96 cm^2$

And the area can be written as product of length and width, therefore:

$A=L'W'$

So we find:

$A=(L-2x)(W-2x)\\96=(20-2x)(10-2x)$

Solving for x,

$96=200-20x-40x+4x^2\\4x^2-60x+104=0\\\\x^2-15x-26=0$

Which has two solutions:

x = 13 cm (this is larger than the initial length of the width, therefore we discard it)

x = 2 cm

So, the length of the new sides are

$L=20-2x=20-2(2)=16 cm\\W=10-2x=10-2(2)=6 cm$

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3 years ago

What is the solution to equation? <br><br> 4x+5=2x-3

Masteriza [31]

4x - 2x = - 3 - 5
2x = - 8
x = - 4

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4 years ago

How can you use mental math to determine that 28,000 divided by 70 equals 400?

Ann [662]

Hello! First I would just look at the numbers without the zeros. So 28/7. This equals 4. Next cross out the same number of zeros on each side of the equation. In this instance, the 7 has one zero and the 28 has three so you can cross out one zero on each side. This leaves you with two zeros left over to add to the end of the 4. So you end up with 400.

I hope this helps!

5 0

3 years ago