Check my answers please?? (multiple choice with pictures)

Mathematics

1 answer:

mariarad [96]3 years ago

5 0

A = bh
A = (22)(18)
A = 396 m²

A = ¹/₂h(b₁ + b₂)
A = ¹/₂(8)(16 + 12)
A = ¹/₂(8)(28)
A = ¹/₂(224)
A = 112 cm²

P = 2l + 2w
20 = 2l + 2(4)
20 = 2l + 8
- 8 - 8
12 = 2l
2 2
6 = l

C = 2πr
C = 2(3.14)(8)
C = 2(25.12)
C = 50.24 in

A = πr²
A = (3.14)(3)²
A = (3.14)(9)
A = 28.26 m²

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Three friends collected aluminum cans from the neighborhood to recycle in total they receive 300 cans many collected 90 Jim coll

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Given

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Jim =100

Bob=110

Now their percentage

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$\begin{gathered} manny=\frac{90}{300}\times100\text{ \%} \\ \\ Manny\text{ percentage=}\frac{90}{3}\text{ \%} \\ \\ Manny\text{ percentage =30 \%} \end{gathered}$

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$\begin{gathered} Jim=\frac{100}{300}\times100\text{ \%} \\ Jim\text{ percentage=}\frac{1}{3}\times100\text{ \%} \\ Jim\text{ percentage=33.333\%} \end{gathered}$

Bob percentage