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2 years ago

Please help, this is a proportion

Mathematics

1 answer:

Verdich [7]2 years ago

3 0

2.5/400=×/720 0.00625=x/720 0.00625(720)=x 4.5=x It will take 4.5 hrs

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2. A large aquarium in the shape of a rectangular prism has the follo

timurjin [86]

Answer: 38568 3/4

Step-by-step explanation:

Volume(V) = lwh

Where l=length;w=width;h=height

V = 50 * 25 1/2 * 30 1/4

V = 38,568 3/4 or 38,568.75

7 0

2 years ago

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Please help me find the area of shaded region and step by step

Bumek [7]

Answer:

Part 1) $A=60\ ft^2$

Part 2) $A=80\ cm^2$

Part 3) $A=96\ m^2$

Part 4) $A=144\ cm^2$

Part 5) $A=9\ m^2$

Part 6) $A=(49\pi -33)\ in^2$

Step-by-step explanation:

Part 1) we know that

The shaded region is equal to the area of the complete rectangle minus the area of the interior rectangle

The area of rectangle is equal to

$A=bh$

where

b is the base of rectangle

h is the height of rectangle

$A=(12)(7)-(8)(3)$

$A=84-24$

$A=60\ ft^2$

Part 2) we know that

The shaded region is equal to the area of the complete rectangle minus the area of the interior square

The area of square is equal to

$A=b^2$

where

b is the length side of the square

$A=(12)(8)-(4^2)$

$A=96-16$

$A=80\ cm^2$

Part 3) we know that

The area of the shaded region is equal to the area of four rectangles plus the area of one square

$A=4(4)(5)+(4^2)$

$A=80+16$

$A=96\ m^2$

Part 4) we know that

The shaded region is equal to the area of the complete square minus the area of the interior square

$A=(15^2)-(9^2)$

$A=225-81$

$A=144\ cm^2$

Part 5) we know that

The area of the shaded region is equal to the area of triangle minus the area of rectangle

The area of triangle is equal to

$A=\frac{1}{2}(b)(h)$

where

b is the base of triangle

h is the height of triangle

$A=\frac{1}{2}(6)(7)-(6)(2)$

$A=21-12$

$A=9\ m^2$

Part 6) we know that

The area of the shaded region is equal to the area of the circle minus the area of rectangle

The area of the circle is equal to

$A=\pi r^{2}$

where

r is the radius of the circle

$A=\pi (7^2)-(3)(11)$

$A=(49\pi -33)\ in^2$

7 0

3 years ago

I need help with number 8 ASAP

WARRIOR [948]

Answer:

C. 24,429 is the answer

Step-by-step explanation:

formula for volume of a sphere is V=4/3*π*r^3

r=18

r^3=5832

I used 3.14 for pie and just multiplied all that together

hope this helps

comment for more

5 0

2 years ago

Read 2 more answers

Help me will give brain

Marat540 [252]

Answer:

Umm sure what you want..

3 0

2 years ago

PLEASE HELP!! 40 PTS

sasho [114]

Answer:

y ≤ −2x + 3

y ≤ x + 3

Step-by-step explanation:

they both share the slope of 3.

line a has a slope of -2

line b has a slope of 1

the sign ≤ means that the inequalities have a solid line and there below the line.

please mark brainliest :)

4 0

2 years ago

Read 2 more answers