3 years ago

542 using base ten blocks

Mathematics

2 answers:

zhuklara [117]3 years ago

7 0

5 big cubes 4 longs and 2 small cubes

nika2105 [10]3 years ago

4 0

5 hundred blocks for 500, 4 ten blocks for 40, and 2 one blocks for 2

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12 square units

Step-by-step explanation:

A = 1/2·h(sum of bases)

A = 1/2(4)(2+4)

A = 2(6) which is 12 square units

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3 years ago

Select all the expressions that show a way to decompose 512. A. 3 1/2+2 1/2 B. 3/6+2/6 C. 1 1/2+2 1/2+2 1/2 D. 1 1/2+1 1/2+3 1/2

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Step-by-step explanation:

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2 years ago

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A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len

Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

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$L=3W - 12$

Required

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$Area = L * W$

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$135= (3W - 12) * W$

$135= 3W^2 - 12W$

Reorder:

$3W^2 - 12W - 135= 0$

Divide through by 3

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Expand:

$W^2 - 9W + 5W - 45 = 0$

$W(W - 9) + 5(W - 9) = 0$

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$W + 5 = 0$ or $W - 9 = 0$

$W = -5$ or $W = 9$

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<em>Hence, the length 15 yards</em>

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3 years ago

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2 years ago

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Answer:

Step-by-step explanation:

5x-22+4x+4 = 90

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x=12

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3 years ago

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