3 years ago

How many squares are in the 20th case

Mathematics

1 answer:

pentagon [3]3 years ago

3 0

Answer:

total 20 squares in matrix of size 4×3

Step-by-step explanation:

in square of size 1×1

six squares of size 2×2

2 squares of size 3×3

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Jeff uses the expression 2(3b + 1) to determine how many books (b) he needs to order for his store. If b = 12, how many books sh

DENIUS [597]

3 x 12 would equal 36, +1 would make it 37. Since there is no space in between 2 and the (, you multiply it. 37 x 3 = 111
So, Jeff should order 111 books

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3 years ago

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2 years ago

4. (10 points) From the given triangle:

katrin2010 [14]

Answer:

sinθ = y/r sinθ = $\frac{-6}{10} = \frac{-3}{5}$

cosθ = x/r cosθ = $\frac{8}{10} = \frac{4}{5}$

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explanation:

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2 years ago

Find the quotient and simplify

soldi70 [24.7K]

Answer:

$\large\boxed{\dfrac{n^2}{4}}$

Step-by-step explanation:

$\dfrac{n^2+2n}{4}\div\dfrac{n+2}{n}=\dfrac{n(n+2)}{4}\cdot\dfrac{n}{n+2}\\\\\text{cancel}\ (n+2)\\\\=\dfrac{n}{4}\cdot\dfrac{n}{1}=\dfrac{n^2}{4}$

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3 years ago