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3 years ago

REALLY REALLY FASTTTT AND I NEED THE RIGHT ANSWERRRRR, Who ever gives me the right answer i will give them 20 points for free.

Mathematics

2 answers:

Pepsi [2]3 years ago

6 0

Answer:

B. She should randomly select campers from the entire camp.

Step-by-step explanation:

We are given that,

Dee wants to estimate the percentage of campers at the camp who ride a bike at least once a week.

So, according to the options, we have,

A. She should select all of the campers in her bike club.

This would not provide correct estimate as there may be other people who ride their bike at least a week.

C. She should select campers that she sees riding their bikes on the weekend.

This would not provide correct estimate as there may be people who ride their bikes on week days.

D. She should randomly select some of the campers that she sees riding their bikes to school.

This would not provide correct estimate as there may be people who do not ride the bike to school but to some other places.

So, she have to select the bikers randomly to get the correct estimate.

Thus, option B is correct.

disa [49]3 years ago

5 0

She should randomly select campers period, because she wants to estimate the percentage of "campers that ride once a week" and not for example what percentage of campers who ride that ride once a week...

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algol [13]

The correct answer is: [B]: " $\frac{(-3)(4)}{(6)}$ " .
__________________________________________________________
Consider choice [A]: $\frac{(3)(4)}{(6)}$ ;
= $\frac{12}{6}$ ;
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [A]" .
__________________________________________________________
Consider choice [B]: $\frac{(-3)(4)}{(6)}$ ;
= $\frac{-12}{6}$ ;
= "-2" ; Yes!
→ Let us proceed with the final answer choice ;
__________________________________________________________
Consider choice [C]: $\frac{(-3)(-4)}{(6)}$ ;
= $\frac{12}{6}$ ;
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [C]" .
__________________________________________________________
The correct answer is: [B]: " $\frac{(-3)(4)}{(6)}$ " .
__________________________________________________________

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3 years ago

Convert to the product of multiplication a^2-b^2-4b-4

kirill [66]

$a^2-b^2-4b-4$ in form of multiplication is $(a-b)(a+b)-4(b+1)$ .

Step-by-step explanation:

We know that factors are the numbers that are being multiplied together . As 6532*7 = 45724 .Here 6532 & 7 are the factors and 45724 is product of the factors .

Here , we need to convert to the product of multiplication

a^2-b^2-4b-4 or , $a^2-b^2-4b-4$ :

⇒ $a^2-b^2-4b-4$

We know by identity that , $p^2-q^2 = (p-q)(p+q)$

⇒ $(a-b)(a+b)-4b-4$

Taking common term out as -4 :

⇒ $(a-b)(a+b)-4(b+1)$

Therefore , $a^2-b^2-4b-4$ in form of multiplication is $(a-b)(a+b)-4(b+1)$ .

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