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Maru [420]
3 years ago
9

A triangle has side lengths of 4 cm, 7 cm, and 8 cm. Is it a right triangle?

Mathematics
1 answer:
Effectus [21]3 years ago
8 0

Answer:

No

Step-by-step explanation:

The triangle is actually an Acute Scalene. No angles in the triangle are 90 degrees.

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A piece of paper is 0.00075 inches thick. How many sheets of paper will be in a stack that is 2.25 inches high
mario62 [17]
2.25/0/00075 = 3000
There will be 3000 sheets of paper
the total height of the stack is 2.25
7 0
3 years ago
Is due today Help!!! Algebra ll
guapka [62]

-7x-9y=-8

5x+6y=4

-35x-45y=-40

35x+42y=28

-3y=-12

y=4

5x+6(4)=4

5x+24=4

5x=-20

x=-4

(-4,4)

Hope this helps.

頑張って!

7 0
3 years ago
Solve the system of equations -x+ 2y = –11 and 5x – 8y = 39 by<br> combining the equations.
Alchen [17]

Answer:

x=-5, y=-8. (-5, -8).

Step-by-step explanation:

-x+2y=-11

5x-8y=39

---------------

5(-x+2y)=5(-11)

5x-8y=39

---------------------

-5x+10y=-55

5x-8y=39

--------------------

2y=-16

y=-16/2

y=-8

-x+2(-8)=-11

-x-16=-11

-x=-11+16

-x=5

x=-5

3 0
2 years ago
10. When you add the same number to both sides of an inequality, is the inequality still true? Explain how you know your stateme
avanturin [10]

The inequality is still true! If you add a number, say 5 to both sides of the following inequality, does anything change?

3 < 6

3 + 5 < 6 + 5

8 < 11

The inequality is still true. We know the statement holds for subtracting the same number because, in a way, addition and subtraction are pretty much the same operation. If I subtract 5 from both sides, I can think of it like "I add negative 5 to both sides" or something along those lines. It's kind of backwards thinking.

6 0
3 years ago
X^3+3x^2y+3xy^2+y^3<br> ————————————<br> X^3+y^3
Hoochie [10]
To factor this fraction, you have be be aware of two special factoring formula:
a^3<span> + </span>b^3<span> = (</span>a<span> + </span>b)(a^2<span> – </span>ab<span> + </span>b^2<span>)

</span><span>(a+b)³ = a³ + 3a²b + 3ab² + b³

You can see the top part in this case is (x+y)^3, and the bottom (denominator) can be factor into (x+y)(x^2-xy+y^2)
we can cancel (x+y), so what we have left is (x+y)^2/(x^2-xy+y^2)
or (x^2+2xy+y^2)/(x^2-xy+y^2)
</span>
7 0
3 years ago
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