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3 years ago

Can somebody plz help answer these questions correctly thanks! (Grade7math) btw :)

Mathematics

1 answer:

Monica [59]3 years ago

7 0

Answer:

1. both boxes 3

2. both boxes 7

3. both boxes 5

4. both boxes 2

5. top box 12 bottom 18

6. top box 9 bottom box 11

7. top box 42 bottom box 60

8. top box 4 bottom box 5

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10 mm 4 mm u What is the volume of the cone to the nearest whole number?

BaLLatris [955]

Answer:

V=167.5 cubic mm

Step-by-step explanation:

Volume of the Cone is given with the formula

$V=\frac{1}{3} \pi r^2h$

though we are not specified what is radius and which one is the height , we are assuming that ,

Height = 10 mm

Radius = 4 mm

Substituting these values in the formula we get

$V=\frac{1}{3} \pi 4^2 \times 10$

$V=\frac{1}{3} \pi 160$

$V=\frac{160 \times 3.14}{3}$

$V=\frac{502.40}{3}$

$V=167.5$

3 0

3 years ago

A castle entrance has walls that can be modeled by the equation x^2/10^2 - y^2/30^2 = 1 with units in feet. How wide is the entr

My name is Ann [436]

Answer:

The entrance is30 ft wide

8 0

3 years ago

Read 2 more answers

WILL GIVE BRAINIEST TO WHOEVER GETS IT RIGHT. PLSHELP THX.

ASHA 777 [7]

Answer:

we get rectangular coordinates,

x= $\frac{3}{2}$

y = $\frac{-3√3}{2}$

Step-by-step explanation:

We have given,

Polar coordinates ,P = (r , θ) = (3 , $\frac{-pi}{3}$ )

We nee to find rectangular coordinates:

Since , x =rcosθ and y = rsinθ

i.e x = 3cos(frac{-pi}{3}[/tex]) = 3× $\frac{1}{2}$ = $\frac{3}{2}$

And y = 3sin(frac{-pi}{3}[/tex]) = 3× $\frac{-√3}{2}$ = $\frac{-3√3}{2}$

Hence we get rectangular coordinates,

x= $\frac{3}{2}$

y = $\frac{-3√3}{2}$

7 0

3 years ago

Please help extra points

gavmur [86]

The answer is a) -20 you can go and rule out d.e,f

7 0

3 years ago

Accomplished silver workers in india can pound silver into incredibly thin sheets, as thin as 3.00 10-7 m (about one-hundredth o

Vlad1618 [11]

The density of silver is 10,500 kg/m^3, therefore the volume of a 2.90 kg silver is:

V = 2.90 kg / (10,500 kg/m^3)

V = 0.000276 m^3

We know that volume is simply area times height:

Volume = Area * height

SO the area is:

Area = 0.000276 m^3 / 3.00 x 10-7 m

Area = 920.63 m^2

7 0

3 years ago