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3 years ago

IS ANYBODY IN CONNECTIONS ACADEMY????? I NEED HELPPPPPPPPP FASSSSSSSTTTTTTTT

Mathematics

1 answer:

Kobotan [32]3 years ago

4 0

Answer:

no but if i see the problem i can help

Step-by-step explanation:

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I’m having trouble finding the answer

Viefleur [7K]

Could never be me lol

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3 years ago

Marcus bought a phone on sale that was discounted 1/6 the

Flura [38]

Answer:

2700 I believe

Step-by-step explanation:

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3 years ago

At a high school, 14% of all students play a sport and 9% of all students play a

olga2289 [7]

Answer:

0.643

Step-by-step explanation:

Let, s = play a sport

c = participate in a club

P(s) = 0.14

P(s n c) = 0.09

probability that a student participates in

a club given that they also play a sport = P(c | s)

P(c | s) = P(c n s) / P(s)

P(c | s) = 0.09 / 0.14

P(c | s) = 0.64285

= 0.643

7 0

3 years ago

Joslyn wants to buy 4 packs of pens for 12$ each and a pack of pencils for 6$ how much money does she need

Tcecarenko [31]

Just multiply 4*12 and add 6.
answer =54

6 0

3 years ago

How do you rationalize the numerator in this problem?

maw [93]

To solve this problem, you have to know these two special factorizations:

$x^3-y^3=(x-y)(x^2+xy+y^2)\\ x^3+y^3=(x+y)(x^2-xy+y^2)$

Knowing these tells us that if we want to rationalize the numerator. we want to use the top equation to our advantage. Let:

$\sqrt[3]{x+h}=x\\ \sqrt[3]{x}=y$

That tells us that we have:

$\frac{x-y}{h}$

So, since we have one part of the special factorization, we need to multiply the top and the bottom by the other part, so:

$\frac{x-y}{h}*\frac{x^2+xy+y^2}{x^2+xy+y^2}=\frac{x^3-y^3}{h*(x^2+xy+y^2)}$

So, we have:

$\frac{x+h-h}{h(\sqrt[3]{(x+h)^2}+\sqrt[3]{(x+h)(x)}+\sqrt[3]{x^2})}=\\ \frac{x}{\sqrt[3]{(x+h)^2}+\sqrt[3]{(x+h)(x)}+\sqrt[3]{x^2}}$

That is our rational expression with a rationalized numerator.

Also, you could just mutiply by:

$\frac{1}{\sqrt[3]{x_h}-\sqrt[3]{x}} \text{ to get}\\ \frac{1}{h\sqrt[3]{x+h}-h\sqrt[3]{h}}$

Either way, our expression is rationalized.

7 0

4 years ago