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3 years ago

2) A number of adults visiting Zoo Negara is 70 to the nearest 10. The number of children attending

Mathematics

1 answer:

lora16 [44]3 years ago

8 0

Answer:

Puedes mandarma la foto

Step-by-step explanation:

Porfa

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The yearbook club had a meeting. The meeting had 20 people, which is four-fifths of the club. How many people are in the club?

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There are 32 people in the yearbook club

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3 years ago

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Beth’s music playlist contains songs she bought and songs her mother bought. The ratio of her songs to her mother’s songs is 3:2

denpristay [2]

Answer:

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Step-by-step explanation:

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4 years ago

A business man invested 10,500 in a company and the value increases 3.5% each year. How much will be the investment after 12 yea

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441,000 dollars after 12 years

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2 years ago

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Each Cube inside the rectangle Prisma has a edge length of 3/4 inches which is the value of the Prisma

Sphinxa [80]

Answer:

Step-by-step explanation:

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3 years ago

The object on the right is made from a square-based pyramid joined to a cuboid.

spayn [35]

Answer:

Density of steel = 80.73 gm/ $cm^3$

Step-by-step explanation:

The figure is made up of cuboid and square pyramid.

Height of cuboid, h = 9 cm

Length of cuboid, l = 6 cm

Width of cuboid, w = 6 cm

Volume of cuboid is given by the formula:

$V_{Cuboid} = l \times w \times h$

$V_{Cuboid} = 6 \times 6 \times 9\\\Rightarrow V_{Cuboid} = 324\ cm^3$

Density of Wood , $D_{Cuboid}$ = 0.68g/ $cm^3$

We know that formula of Density is:

$Density = \dfrac{Weight}{Volume}$

$D_{Cuboid} = \dfrac{W_{Cuboid}}{V_{Cuboid}}\\\Rightarrow W_{Cuboid} = V_{Cuboid} \times D_{Cuboid}$

Putting the values:

$W_{Cuboid} = 324 \times 0.68 = 220.32\ gm$

Total weight = $W_{Cuboid} + W_{Pyramid}$

970 = 220.32 $+ W_{Pyramid}$

$W_{Pyramid}$ = 749.68 gm

Volume of pyramid is given as:

$V_{Pyramid}= \dfrac{1}{3} \times \text{Area of Base} \times \text{Vertical Height}$

Base is a square with side 6 cm

$V_{Pyramid}= \dfrac{1}{3} \times 6 \times 6 \times (17 -9)\\V_{Pyramid}= 96\ cm^3$

Density of Steel/Pyramid:

$D_{Pyramid} = \dfrac{W_{Pyramid}}{V_{Pyramid}}\\\Rightarrow D_{Pyramid} = \dfrac{749.68}{96}\\\Rightarrow D_{Pyramid} = 80.73\ gm/cm^3$

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4 years ago