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3 years ago

What is 2/3+3/4+5/8 please help

Mathematics

1 answer:

torisob [31]3 years ago

5 0

Answer:

2 1/24

Step-by-step explanation:

2/3 = 16/24

3/4= 18/24

5/8= 15/24

16+18+15=49

49-24= 25-24=1

2 1/24

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6) Split the following into a given ratio:

Butoxors [25]

(a)

Given:

72 to be split into 1:3:5

Solution:

First divide the amount with the sum of the ratio given

72 / 1 + 3 + 5 = 72 / 9 = 8

Now multiply the answer with each value:-

8 × 1 = 8

8 × 3 = 24

8 × 5 = 40

∴ The ratio will be 8:24:40

{To check your answer add to get the exact value: 8 + 24 + 40 = 72}

(b)

Given:

150 to be split into 2:3

Solution:

First divide the amount with the sum of the ratio given

150 / 2 + 3 = 150 / 5 = 30

Now multiply the answer with each value:-

30 × 2 = 60

30 × 3 = 90

∴ The ratio will be 60:90

{Now check your answer in the same way above: 60 + 90 = 150}

8 0

3 years ago

Hello! Please help!! I really need this.

IrinaVladis [17]

its a i did this a while ago

4 0

3 years ago

Read 2 more answers

How do you do 0.4x + 1.3= 1.5 ?

qaws [65]

0.4X=1.5-1.3

0.4X=0.2

X=1/2=0.5

8 0

3 years ago

Read 2 more answers

Help with this please

ASHA 777 [7]

Answer:B

Step-by-step explanation:

4 0

3 years ago

Coffee is sold in two different sized canisters. The smaller canister has a diameter of 9 cm and a height of 12 cm. The larger c

Mademuasel [1]

Answer:

Volume of smaller canister = 763.02 $cm^3$

Surface area of smaller canister = 466.29 $cm^2$

Volume of larger canister = 6104.16 $cm^3$

Surface area of larger canister = 1865.16 $cm^2$

Volume becomes 8 times by doubling the size and surface area becomes 4 times by doubling the size.

Step-by-step explanation:

Given that :

Diameter of Smaller canister = 9 cm

Height of Smaller canister = 12 cm

Larger canister is double the size of smaller one i.e. height and diameter are doubled.

To find:

Volume and surface area of each canister and their comparison.

Solution:

First of all, let us have a look at the formula of volume and surface area of a cylinder.

Volume, $V=\pi r^2h$

Surface Area, $A=2\pi r^2+ 2\pi rh$

where r and h are the radius and height of the cylinder respectively.

Radius is half of diameter.

Radius of smaller canister is given by:

$r_1 = \dfrac{9}{2} = 4.5\ cm$

Height, $h_1 =12\ cm$

Volume, $V_1=\pi (4.5)^2 \times 12 = 763.02\ cm^3$

Surface Area, $A_1 = 2 \pi \times 4.5 ^2 + 2\pi\times 4.5 \times 12 = 466.29 \ cm^2$

Now, Diameter / Radius and height of larger canister are doubled of smaller one.

Radius of larger canister is given by:

$r_2 = \dfrac{9}{2} \times 2 = 9 cm$

Height, $h_2 =12\times 2 = 24\ cm$

Volume, $V_2=\pi (9)^2 \times 24 = 6104.16\ cm^3$

Surface Area, $A_2 = 2 \pi \times 9 ^2 + 2\pi\times 9\times 24= 1865.16 \ cm^2$

Comparing the results, we can easily see that:

$V_2 = 8 \times V_1\\A_2 = 4 \times A_1$

i.e. Volume becomes 8 times by doubling the size and surface area becomes 4 times by doubling the size.

5 0

4 years ago