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Shtirlitz [24]
3 years ago
13

The table above shows the relationship between the number of blue blocks (b) and the total number of blocks (t) in a stack. Whic

h of the following equations best represents the relationship in the table? A,t = b − 4 B.t = b + 6 C.t = b × 2 D.t = b + 4

Mathematics
1 answer:
katen-ka-za [31]3 years ago
7 0
The answer is a because each number in the "total number of blocks" column is 4 more than each number in the "stacks of blue blocks" column.
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Evan typed 72 pages of notes one day. He typed 1 2 of the pages in the morning and 1 3 of the pages in the afternoon. He typed t
Korolek [52]

Answer:

60 pages

Step-by-step explanation:

Evan types a total of 72 pages a day.

In the morning he typed 1/2 pages or 72/2 = 36 pages.

In the afternoon he typed 1/3 pages or 72/3 = 24 pages.

Together, he typed 36 + 24 = 60 pages in the morning and afternoon.

7 0
3 years ago
Dy/dx of ln(x/x^²+1)
exis [7]

\dfrac{dy}{dx}\ \ln\left(\dfrac{x}{x^2+1}\right)=\dfrac{1}{\frac{x}{x^2+1}}\cdot\dfrac{x'(x^2+1)-x(x^2+1)'}{(x^2+1)^2}\\\\=\dfrac{x^2+1}{x}\cdot\dfrac{1(x^2+1)-x(2x)}{(x^2+1)^2}=\dfrac{1}{x}\cdot\dfrac{x^2+1-2x^2}{x^2+1}=\dfrac{1-x^2}{x^3+x}\\\\Used:\\\\(\ln(x))'=\dfrac{1}{x}\\\\\left[f(g(x))\right]'=f'(g(x))\cdot g'(x)\\\\\left(\dfrac{f(x)}{g(x)}\right)'=\dfrac{f'(x)g(x)-f(x)g'(x)}{[g(x)]^2}

5 0
3 years ago
Solve the equation.<br> 4x - 3/5 = 2/5<br><br> A. 1/5<br> B. 5/5<br> C. 1/2<br> D. 1/4
barxatty [35]
The answer is D. you add the 3/5 to the other side to get 1. and then you divide one and 4x to get 1/4.
8 0
3 years ago
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