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3 years ago

Subtracting mixed numbers with like denominators 9 1/3 - 2 2/3=

Mathematics

2 answers:

olya-2409 [2.1K]3 years ago

8 0

Answer:

6 2/3

Step-by-step explanation:

28/3 - 8/3 = 20/3 = 6 2/3

nata0808 [166]3 years ago

6 0

Answer:

6 2/3

Step-by-step explanation:

Turn the mixed fraction into an improper fraction by multiplying the denominator by the constant (9x3) then add the numerator (27+1) your new improper fraction would be 28/3. For the second mixed fraction do the same. You should get 8/3. Then subtract the numerators. Dont forget to convert the answer back into a mixed fraction!!

Hope this helps! :)

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Step-by-step explanation:

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Answer:

See solutions for detail.

Step-by-step explanation:

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3 years ago

Carissa also has a sink that is shaped like a half sphere. The sink has a volume of 4000/ 3 * π in 3. One day, her sink clogged.

givi [52]

Answer:

Part a) 119 cups

Part b) 30 cups

Step-by-step explanation:

Part a)

step 1

Find the volume of the conical cup with a diameter of 4 in. and a height of 8 in

The volume of the cone (cup) is equal to

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

we have

$r=4/2=2\ in$ ----> the radius is half the diameter

$h=8\ in$

assume

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substitute

$V=\frac{1}{3}(3.14)(2^{2})8=33.49\ in^3$

step 2

Find out how many cups of water must Carissa scoop out of the sink

Divide the volume of the sink by the volume of the cup

$\frac{4,000}{33.49}= 119\ cups$

Part b)

step 1

Find the volume of the conical cup with a diameter of 8 in. and a height of 8 in

The volume of the cone (cup) is equal to

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

we have

$r=8/2=4\ in$ ----> the radius is half the diameter

$h=8\ in$

assume

$\pi =3.14$

substitute

$V=\frac{1}{3}(3.14)(4^{2})8=133.97\ in^3$

step 2

Find out how many cups of water must Carissa scoop out of the sink

Divide the volume of the sink by the volume of the cup

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wlad13 [49]

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