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3 years ago

Can you take a pic of your work nd attach it? This is urgent.

Mathematics

2 answers:

AlekseyPX3 years ago

7 0

Answer:

Step-by-step explanation:

mixas84 [53]3 years ago

7 0

Answer:

j = 9

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5 /3 j=15

Step 2: Multiply both sides by 3/5.

( 3 /5 )*( 5 /3 j)=( 3 /5 )*(15)

j = 9

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Gnoma [55]

Answer:

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Step-by-step explanation:

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3 years ago

How fast was a driver going if the car left skid marks that were 48 feet long on dry concrete? (The coefficient of friction is 1

Savatey [412]

Answer:

B) 38 mph

Step-by-step explanation:

s = √(30df)

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3 years ago

Find the product. 2 4/10 =

AleksAgata [21]

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Step-by-step explanation:

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3 0

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:

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

5 0

4 years ago