2 years ago

Which is the value of 3b 2 - b when b=5 ??

1 answer:

8 0

It should be 30 because the problem would teun into 3(5)2. 3(5)=15. (15)2=30

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choli [55]

Its either centimeters or inches.
I prefer centimeters

7 0

3 years ago

horsena [70]

See the picture for the answer.

8 0

3 years ago

mixer [17]

Answer:x^2 + 9x + 20

Step-by-step explanation:

You could just multiply (x+4)(x+5) and get x^2 + 9x + 20, but judging from the picture, it looks like they want you to split it into 4 rectangles

x^2 +4x+ 5x + 20 =x^2 +9x + 20, just like (x+4)(x+5)

8 0

3 years ago

sp2606 [1]

The expression can be solved by expanding the bracket and multiplying out the terms

$(p^4-q^4)(p^4+q^4)$ $\begin{gathered} =p^4(p^4+q^4)-q^4(p^4+q^4) \\ =p^8+p^4q^4-p^4q^4-q^8 \\ =p^8-q^8 \end{gathered}$

Therefore, the expression can be simplified as;

$p^8-q^8$

Alternatively, using the theorem of difference of two squares, which is

$a^2-b^2=(a-b)(a+b)$

Hence,

$p^8-q^8=(p^4)^2-(q^4)^2$

7 0

1 year ago

Kay [80]

There are 900 outcomes.

7 0

2 years ago