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Delicious77 [7]

3 years ago

10

What is the product 4.6(-5.2)

1 answer:

vladimir1956 [14]3 years ago

8 0

Multiply 4.6 and -5.2 to get -23.92

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If you guys can show me how the question -2x-6<-2 equals 8, I'll give you 30 points. Show work please

sweet [91]

Can I still post my answer here?

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2 years ago

Polynomial are closed under multiplication. What does that mean?

Y_Kistochka [10]

Answer:

look this link up

https://mathbitsnotebook.com/Algebra1

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3 years ago

6² / (6+3) + 18 / 3 - 3²<br><br><br> /- divided by

Nataliya [291]

All you have to do is go in the order of operations, and your answer is simple:
<span>6² / (6+3) + 18 / 3 - 3²
= 36 / (9) + 6 - 9
= 4 + 3
= 1</span>

6 0

2 years ago

The whole numbers a and b are divisible by c. Is a+b divisible by c? Is b−a divisible by c? Explain your reasoning.

gizmo_the_mogwai [7]

Answer:

$a+b$ is divisible by $c$ since $d$ and $e$ are also whole numbers.

$b-a$ is divisible by $c$ since $d$ and $e$ are also whole numbers.

Step-by-step explanation:

Let $a$ , $b$ whole number that are divisible by $c$ . Then, we have that $d = \frac{a}{c}$ and $e = \frac{b}{c}$ , which are also whole numbers. We proceed to prove that $a + b$ is divisible by $c$ :

1) $d = \frac{a}{c}$ , $e = \frac{b}{c}$ , $a$ , $b$ , $c$ , $d$ , $e$ $\in \mathbb{Z}$ Given

2) $d + e = \frac{a}{c}+\frac{b}{c}$ Compatibility with addition

3) $d+e = a\cdot c^{-1}+b\cdot c^{-1}$ Definition of division

4) $d + e = c^{-1}\cdot (a+b)$ Commutative and distributive properties

5) $d+e = (a+b) \cdot c^{-1}$ Commutative properties

6) $d+e = \frac{a+b}{c}$ Definition of division/Result

Therefore, $a+b$ is divisible by $c$ since $d$ and $e$ are also whole numbers.

We proceed to prove that $b-a$ is divisible by $c$ :

1) $d = \frac{a}{c}$ , $e = \frac{b}{c}$ , $a$ , $b$ , $c$ , $d$ , $e$ $\in \mathbb{Z}$ Given

2) $d\cdot (-1) = \frac{a}{c}\cdot (-1)$ Compatibility with multiplication

3) $e + d\cdot (-1) = \frac{b}{c}+\frac{a}{c}\cdot (-1)$ Compatibility with addition

4) $e + d\cdot (-1) = b\cdot c^{-1}+(a\cdot c^{-1})\cdot (-1)$ Definition of division

5) $e + d\cdot (-1) = b\cdot c^{-1} + [a\cdot (-1)]\cdot c^{-1}$ Associative and commutative properties

6) $e + d\cdot (-1) = c^{-1}\cdot [b+a\cdot (-1)]$ Commutative and distributive properties.

7) $e+d\cdot (-1) = [b+a\cdot (-1)]\cdot c^{-1}$ Commutative properties.

8) $e + d\cdot (-1) = \frac{b+a\cdot (-1)}{c}$ Definition of division

9) $e-d = \frac{b-a}{c}$ $(-1)\cdot a = -a$ /Definition of subtraction

Therefore, $b-a$ is divisible by $c$ since $d$ and $e$ are also whole numbers.

7 0

3 years ago

E=mc2<br> Anybody know?

KatRina [158]

We need more than that lol

8 0

2 years ago

Read 2 more answers