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3 years ago

How do I regroup this for associative property 5 + 6) + (4 + 7) + 3

Mathematics

2 answers:

Bumek [7]3 years ago

3 0

Answer:

5+6)+(4+7)+3

11+11)+3

22+3

Sidana [21]3 years ago

3 0

9514 1404 393

Answer:

5 +(6 +4) +(7 +3)

Step-by-step explanation:

"Regroup" in this context means relocate pairs of parentheses any way you like. There are many different correct answers.

Here, pairs of terms are grouped. You can group more, or different pairs. Some possibilities are ...

(5 +6) +((4 +7) +3)

5 +(6 +4 +7) +3

5 +(6 +4) +(7 +3) . . . . . groups "tens" together

(5 +6) +4 +(7 +3)

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one third of a land is on maize, a fifth of the remainder is on potatoes and the rest which is 0.5 ha is on beans. how much of t

disa [49]

Answer: $1250\ m^2$

Step-by-step explanation:

Let x= Total land.

Then for Maize = $\dfrac{x}{3}$

For Potatoes = $\dfrac15(x-\dfrac {x}{3})=\dfrac15(\dfrac{2x}{3})=\dfrac{2}{15}x$

For beans = $x- (\dfrac{x}{3}+\dfrac{2}{15}x)=0.5 \ ha$

$\Rightarrow\ x- (\dfrac{5x+2x}{15})=0.5 \ ha\\\\\Rightarrow\ x- (\dfrac{7x}{15})=0.5 \ ha\\\\\Rightarrow\ \dfrac{15x-7x}{15}=0.5 \ ha\\\\\Rightarrow\ \dfrac{8x}{15}=0.5 \ ha\\\\\Rightarrow\ x=0.5\times\dfrac{15}{8} \ ha\\\\\Rightarrow\ x=0.9375 \ ha$

1 ha = 10000.00 m²

0.9375 ha = 9375 m²

Land for potatoes = $\dfrac{2}{15}(9375) =1250\ m^2$

Hence, $1250\ m^2$ of the land is on potatoes.

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3 years ago

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castortr0y [4]

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Suppose the length of each side of the cube is x, so the volume must be:

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