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2 years ago

Someone pls help me with this question!!!!!!!

Mathematics

1 answer:

Llana [10]2 years ago

5 0

Answer: The answer is 96

Step-by-step explanation: your have to measure the length by width(6x12) then subtract 12 from 20 which is 8 then divide by 2 and you get 4 so when you have 6x4=24÷2(because its a triangle)=12 since theres 2 triangles multiply by 2 so add 12+12+72 and you get 96

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What is the simplest form of 4a + 8b/12<br> Step by step pls

shutvik [7]

Answer:

4a + 2b/3

Step-by-step explanation:

focus on 8b/12 first:

factor 8b/12 by 4 ---> 8b/12 = 4(2)b/4(3) ----> cancel 4 in the denominator and the nominator ---> 8b/12 = 4(2)b/4(3) = 2b/3

then, go back to 4a:

4a is in its simplest form, it can't be factor

therefore, plus 4a and 2b/3 = 4a + 2b/3

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3 years ago

Yuri read 17 books.

Aleks [24]

Answer:

Yuri read 12 more books than Hiro.

Step-by-step explanation:

17-5=12

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3 years ago

( 2 – 3x – 10 ) ÷ ( x – 5 )

PtichkaEL [24]

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Step-by-step explanation:

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2 years ago

2. Jamie bought a computer for $856.35 including tex He received an interest-free loan for the exact poor of the computer. If Ja

Ksju [112]

Answer:

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856.35/15. total amount divided by number of payments

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3 years ago

Which of the following expressions is equivalent to a3 + b3?

lubasha [3.4K]

ANSWER
${a}^{3} + {b}^{3} = (a + b)( {a}^{2 } - ab + {b}^{2} )$

EXPLANATION

To find the expression that is equivalent to
${a}^{3} + {b}^{3}$
we must first expand
${(a + b)}^{3}$
Then we rearrange to find the required expression.

So let's get started.

${(a + b)}^{3} = (a + b) {(a + b)}^{2}$

We expand the parenthesis on the right hand side to get,

${(a + b)}^{3} = (a + b) ( {a}^{2} + 2ab + {b}^{2} )$

We expand again to obtain,

${(a + b)}^{3} = {a}^{3} + 3 {a}^{2}b + 3a {b}^{2} + {b}^{3}$

Let us group the cubed terms on the right hand side to get,

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3 {a}^{2}b + 3a {b}^{2}$

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab (a+ b)$

We make the cubed terms the subject,

${(a + b)}^{3} - 3ab (a+ b) = {a}^{3} + {b}^{3}$

We factor to get,

$(a + b)({(a + b)}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We expand the bracket on the left hand side to get,

$(a + b)( {a}^{2} + 2ab + {b}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We finally simplify to get,

$(a + b)( {a}^{2} - ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

5 0

2 years ago

Read 2 more answers